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JayzTwoCents told me to NEVER buy a Gigabyte power supply, what do I get instead?

Skeledom

Hi all.

 

I recently watched a video from JayzTwoCents where he fixed a broken computer and in it he said that he wished the guy who owned said computer had told him he had a Gigabyte made power supply because he would've told him to stay far away from any Gigabyte power supplies because they don't know how to make a half-way decent power supply. After doing some light research he appears to be mostly correct after I've found post after tweet after video of people basically saying the same thing. That I should stay the hell away from power supplies made by Gigabyte.

 

I quickly requested a refund from Amazon and will get it when I return the Gigabyte 750w power supply (which I will do as soon as it arrives), but the question then becomes what brand power supply do I look for?

I'm looking for a 750w one and am building my first ever PC, primarily for video editing but also for gaming and streaming.
I assume from how often Linus uses a Corsair power supply in builds that the Corsair RM750 would be a good choice?
Let me know if you have any suggestions/tips on what other brands to avoid and if you have any recommendations please bear in mind I am a tad budget constricted so I wouldn't like to spend over £120/$170USD.

Cheers!

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Get one of these:

be quiet! Straight Power 11 750 W 80+ Gold

Corsair RM (2019) 750 W 80+ Gold

EVGA G3 750 W 80+ Gold

Get whichever one you like the most, they are all great. I would personally get the Be Quiet or Corsair since they have long warranty.

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Jay usually speaks a lot of BS.

like on that video. Gigabyte has terrible psus yes but they have some decent ones liek their Aorus lineup.

QUOTE ME  FOR ANSWER.

 

Main PC:

Spoiler

|Ryzen 7 3700x, OC to 4.2ghz @1.3V, 67C, or 4.4ghz @1.456V, 87C || Asus strix 5700 XT, +50 core, +50 memory, +50 power (not a great overclocker) || Asus Strix b550-A || G.skill trident Z Neo rgb 32gb 3600mhz cl16-19-19-19-39, oc to 3733mhz with the same timings || Cooler Master ml360 RGB AIO || Phanteks P500A Digital || Thermaltake ToughPower grand RGB750w 80+gold || Samsung 850 250gb and Adata SX 6000 Lite 500gb || Toshiba 5400rpm 1tb || Asus Rog Theta 7.1 || Asus Rog claymore || Asus Gladius 2 origin gaming mouse || Monitor 1 Asus 1080p 144hz || Monitor 2 AOC 1080p 75hz || 

Test Rig.

Spoiler

Ryzen 5 3400G || Gigabyte b450 S2H || Hyper X fury 2x4gb 2666mhz cl 16 ||Stock cooler || Antec NX100 || Silverstone essential 400w || Transgend SSD 220s 480gb ||

Just Sold

Spoiler

| i3 9100F || Msi Gaming X gtx 1050 TI || MSI Z390 A-Pro || Kingston 1x16gb 2400mhz cl17 || Stock cooler || Kolink Horizon RGB || Corsair CV 550w || Pny CS900 120gb ||

 

Tier lists for building a PC.

 

Motherboard tier list. Tier A for overclocking 5950x. Tier B for overclocking 5900x, Tier C for overclocking 5800X. Tier D for overclocking 5600X. Tier F for 4/6 core Cpus at stock. Tier E avoid.

(Also case airflow matter or if you are using Downcraft air cooler)

Spoiler

 

Gpu tier list. Rtx 3000 and RX 6000 not included since not so many reviews. Tier S for Water cooling. Tier A and B for overcloking. Tier C stock and Tier D avoid.

( You can overclock Tier C just fine, but it can get very loud, that is why it is not recommended for overclocking, same with tier D)

Spoiler

 

Psu tier List. Tier A for Rtx 3000, Vega and RX 6000. Tier B For anything else. Tier C cheap/IGPU. Tier D and E avoid.

(RTX 3000/ RX 6000 Might run just fine with higher wattage tier B unit, Rtx 3070 runs fine with tier B units)

Spoiler

 

Cpu cooler tier list. Tier 1&2 for power hungry Cpus with Overclock. Tier 3&4 for overclocking Ryzen 3,5,7 or lower power Intel Cpus. Tier 5 for overclocking low end Cpus or 4/6 core Ryzen. Tier 6&7 for stock. Tier 8&9 Ryzen stock cooler performance. Do not waste your money!

Spoiler

 

Storage tier List. Tier A for Moving files/  OS. Tier B for OS/Games. Tier C for games. Tier D budget Pcs. Tier E if on sale not the worst but not good.

(With a grain of salt, I use tier C for OS myself)

Spoiler

 

Case Tier List. Work In Progress. Most Phanteks airflow series cases already done!

Ask me anything :)

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7 minutes ago, Pixelfie said:

Corsair RM (2019) 750 W 80+ Gold

I'll second that; bought one a while ago (but still not using it).

I frequently edit any posts you may quote; please check for anything I 'may' have added.

 

Did you test boot it, before you built in into the case?

WHY NOT...?!

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5 minutes ago, ToboRobot said:

seasonic.

Wow a whole brand. Taht will help a lot. especially when Seasonic Focus v1 psus are crap with high transient gpus.

8 minutes ago, Pixelfie said:

EVGA G3 750 W 80+ Gold

not really a good psu.

 

 

Corsair RM is decent  

 

 

other decenbt choices:

https://uk.pcpartpicker.com/product/Tsbkcf/bitfenix-formula-gold-750w-80-gold-certified-atx-power-supply-bp-fm750ulag-7r

https://uk.pcpartpicker.com/product/JfBrxr/corsair-txm-gold-750w-80-gold-certified-semi-modular-atx-power-supply-cp-9020131-na

https://uk.pcpartpicker.com/product/79tQzy/corsair-rmx-2018-750w-80-gold-certified-fully-modular-atx-power-supply-cp-9020179-na

https://uk.pcpartpicker.com/product/v3VG3C/msi-mpg-a-gf-750-w-80-gold-certified-fully-modular-atx-power-supply-mpg-a750gf

https://uk.pcpartpicker.com/product/fdXYcf/fractal-design-ion-760-w-80-platinum-certified-fully-modular-at-power-supply-fd-psu-ionp-760p-bk

https://uk.pcpartpicker.com/product/9htQzy/be-quiet-straight-power-11-750w-80-gold-certified-fully-modular-atx-power-supply-bn283

 

 

the best ones: 

https://uk.pcpartpicker.com/product/DvCFf7/enermax-revolution-df-750-w-80-gold-certified-fully-modular-atx-power-supply-erf750ewt

https://uk.pcpartpicker.com/product/v3VG3C/msi-mpg-a-gf-750-w-80-gold-certified-fully-modular-atx-power-supply-mpg-a750gf

https://uk.pcpartpicker.com/product/Tsbkcf/bitfenix-formula-gold-750w-80-gold-certified-atx-power-supply-bp-fm750ulag-7r

https://uk.pcpartpicker.com/product/9htQzy/be-quiet-straight-power-11-750w-80-gold-certified-fully-modular-atx-power-supply-bn283

QUOTE ME  FOR ANSWER.

 

Main PC:

Spoiler

|Ryzen 7 3700x, OC to 4.2ghz @1.3V, 67C, or 4.4ghz @1.456V, 87C || Asus strix 5700 XT, +50 core, +50 memory, +50 power (not a great overclocker) || Asus Strix b550-A || G.skill trident Z Neo rgb 32gb 3600mhz cl16-19-19-19-39, oc to 3733mhz with the same timings || Cooler Master ml360 RGB AIO || Phanteks P500A Digital || Thermaltake ToughPower grand RGB750w 80+gold || Samsung 850 250gb and Adata SX 6000 Lite 500gb || Toshiba 5400rpm 1tb || Asus Rog Theta 7.1 || Asus Rog claymore || Asus Gladius 2 origin gaming mouse || Monitor 1 Asus 1080p 144hz || Monitor 2 AOC 1080p 75hz || 

Test Rig.

Spoiler

Ryzen 5 3400G || Gigabyte b450 S2H || Hyper X fury 2x4gb 2666mhz cl 16 ||Stock cooler || Antec NX100 || Silverstone essential 400w || Transgend SSD 220s 480gb ||

Just Sold

Spoiler

| i3 9100F || Msi Gaming X gtx 1050 TI || MSI Z390 A-Pro || Kingston 1x16gb 2400mhz cl17 || Stock cooler || Kolink Horizon RGB || Corsair CV 550w || Pny CS900 120gb ||

 

Tier lists for building a PC.

 

Motherboard tier list. Tier A for overclocking 5950x. Tier B for overclocking 5900x, Tier C for overclocking 5800X. Tier D for overclocking 5600X. Tier F for 4/6 core Cpus at stock. Tier E avoid.

(Also case airflow matter or if you are using Downcraft air cooler)

Spoiler

 

Gpu tier list. Rtx 3000 and RX 6000 not included since not so many reviews. Tier S for Water cooling. Tier A and B for overcloking. Tier C stock and Tier D avoid.

( You can overclock Tier C just fine, but it can get very loud, that is why it is not recommended for overclocking, same with tier D)

Spoiler

 

Psu tier List. Tier A for Rtx 3000, Vega and RX 6000. Tier B For anything else. Tier C cheap/IGPU. Tier D and E avoid.

(RTX 3000/ RX 6000 Might run just fine with higher wattage tier B unit, Rtx 3070 runs fine with tier B units)

Spoiler

 

Cpu cooler tier list. Tier 1&2 for power hungry Cpus with Overclock. Tier 3&4 for overclocking Ryzen 3,5,7 or lower power Intel Cpus. Tier 5 for overclocking low end Cpus or 4/6 core Ryzen. Tier 6&7 for stock. Tier 8&9 Ryzen stock cooler performance. Do not waste your money!

Spoiler

 

Storage tier List. Tier A for Moving files/  OS. Tier B for OS/Games. Tier C for games. Tier D budget Pcs. Tier E if on sale not the worst but not good.

(With a grain of salt, I use tier C for OS myself)

Spoiler

 

Case Tier List. Work In Progress. Most Phanteks airflow series cases already done!

Ask me anything :)

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9 minutes ago, SavageNeo said:

Jay usually speaks a lot of BS.

like on that video. Gigabyte has terrible psus yes but they have some decent ones liek their Aorus lineup.

Nice to see that bias isn't an issue...

I frequently edit any posts you may quote; please check for anything I 'may' have added.

 

Did you test boot it, before you built in into the case?

WHY NOT...?!

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12 minutes ago, Sealion said:

I recently watched a video from JayzTwoCents where he fixed a broken computer and in it he said that he wished the guy who owned said computer had told him he had a Gigabyte made power supply because he would've told him to stay far away from any Gigabyte power supplies because they don't know how to make a half-way decent power supply.

  1. dont listen to Jayz when it comes to powersupplies. 
  2. Gigabyte doesnt make any powersupplies, they ask OEMs to do so. tho not an important distinction.
  3. currently Gigabyte has one catastrophically bad Powersupply. the P GM. however their Auros P GM is ok. Judge on a per unit basis, not on a brand basis. 
9 minutes ago, Pixelfie said:

EVGA G3 750 W 80+ Gold

Get whichever one you like the most, they are all great.

well the G3 is kinda "eh" with its OPP related issue. 

 

7 minutes ago, ToboRobot said:

seasonic.

just dont point to brands, everyone has good and bad powersupplies, just judge on a per unit basis. 

 

16 minutes ago, Sealion said:

Let me know if you have any suggestions/tips on what other brands to avoid and if you have any recommendations please bear in mind I am a tad budget constricted so I wouldn't like to spend over £120/$170USD.

MSI MPG A-GF 750 W 80+ Gold Certified Fully Modular ATX Power Supply (MPG A750GF) - PCPartPicker
Corsair RMx (2018) 750 W 80+ Gold Certified Fully Modular ATX Power Supply (CP-9020179-NA) - PCPartPicker

these just about the best options in that budget range. Id probably pick up the A GF for multirail, tho id understand saving a bit on the RMx. Not like Multirail is a dealbreaker at 750w. 

 

BitFenix Formula Gold 750 W 80+ Gold Certified ATX Power Supply (BP-FM750ULAG-7R) - PCPartPicker
something cheaper and still very good. 

 

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I like how people are replying to this all like "lol Don't listen to Jay, he's talkin bullshit, lmao imagine taking him seriously despite the fact he's been building PCs since he was a kid, yeah Gigabyte have made terrible GPUs but they've also made decent ones" and then NONE of the recommended PSUs in the replies are made by Gigabyte.

 

I get if people don't like a specific creator for whatever reason but writing him off wholesale without explaining why not only doesn't help people new to building PCs, like me, but also makes you look like an asshole.

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Seems like the expected form is to only worship the ground LGS himself walks on and that those with control over free-will & free-thought are not welcome here...??

 

Such hostility is hardly surprising, given the general state of Internet social behaviour in this day & age.

I frequently edit any posts you may quote; please check for anything I 'may' have added.

 

Did you test boot it, before you built in into the case?

WHY NOT...?!

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5 minutes ago, Sealion said:

I like how people are replying to this all like "lol Don't listen to Jay, he's talkin bullshit, lmao imagine taking him seriously despite the fact he's been building PCs since he was a kid, yeah Gigabyte have made terrible GPUs but they've also made decent ones" and then NONE of the recommended PSUs in the replies are made by Gigabyte.

 

I get if people don't like a specific creator for whatever reason but writing him off wholesale without explaining why not only doesn't help people new to building PCs, like me, but also makes you look like an asshole.

What parts are you powering with this setup? It's possible you could go lower wattage, you might be fine with a 750w, or you might need even more power for additional headroom moving forward depending on what you upgrade to down the line. If you're powering a high end GPU  (and managed to get one) and CPU combo then 850w or 1000w could be needed for power spikes and whatnot depending on the quality of the unit itself and how it handles those.

Current Network Layout:

Current Build Log/PC:

Prior Build Log/PC:

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1 hour ago, Lurick said:

What parts are you powering with this setup? It's possible you could go lower wattage, you might be fine with a 750w, or you might need even more power for additional headroom moving forward depending on what you upgrade to down the line. If you're powering a high end GPU  (and managed to get one) and CPU combo then 850w or 1000w could be needed for power spikes and whatnot depending on the quality of the unit itself and how it handles those.

Here's a list of all the other parts. Everything has been purchased though some parts are yet to be delivered. (I deleted the Gigabyte power supply from the list)
Also bear in mind I'm gonna be doing intensive video editing and was recommended a 750w by friends who build PCs to give me some overhead.
https://uk.pcpartpicker.com/user/SuperSealion/saved/XH9QP6

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24 minutes ago, Sealion said:

Here's a list of all the other parts. Everything has been purchased though some parts are yet to be delivered. (I deleted the Gigabyte power supply from the list)
Also bear in mind I'm gonna be doing intensive video editing and was recommended a 750w by friends who build PCs to give me some overhead.
https://uk.pcpartpicker.com/user/SuperSealion/saved/XH9QP6

Yah 700 to 800 would be plenty with some room for a future 3060 or 3070 (maybe 3080 I think) 🙂

Something like a beQuiet Straight Power 11 should do nicely.

https://uk.pcpartpicker.com/product/9htQzy/be-quiet-straight-power-11-750w-80-gold-certified-fully-modular-atx-power-supply-bn283

 

Current Network Layout:

Current Build Log/PC:

Prior Build Log/PC:

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52 minutes ago, Sealion said:

writing him off wholesale without explaining why not only doesn't help people new to building PCs

the TL;DR: with Jayz and powersupplies is the following:

  1. he subscribes to the "buy 80+ gold mindset", which sadly isnt a good mindset when it comes to powersupplies. in fact using 80+ for anything other than an efficiency indicator is silly. And there is more to powersupplies than efficiency. 
  2. Spoiler

     

    then there is this where he starts off poorly by getting the first "fact" about powersupplies wrong. 

now i dont blame him for not knowing powersupplies, most dont. But making a factual video which has missconceptions and missunderstanding about powersupplies isnt exactly great. And if you dont know about PSUs, in general at least read a piece or two by Aris before making a video. 

 

When it comes to powersupplies specifically, you can write off Jayz. He is an entertainment channel in the same range as LTT. 

 

 

if you want informative pieces on subjects like motherboards, Powersupplies etc etc. You need to look elsewhere compared to LTT and Jayz. For similar reasons, dont use Bitwit for powersupply guidance either.

 

hopefully this offered some insight. Hopefully this didnt come off as me just bashing tech youtubers. Its just that some really dont give good advice on powersupplies. 

 

37 minutes ago, Sealion said:

MSI MPG A-GF 750 W 80+ Gold Certified Fully Modular ATX Power Supply (MPG A750GF) - PCPartPicker
Corsair RMx (2018) 750 W 80+ Gold Certified Fully Modular ATX Power Supply (CP-9020179-NA) - PCPartPicker

 

like pointed to earlier, either of these would be plenty fine, even if you were feeling fancy to add something like a 3080 or 3090 into it. They are for the time being very compelling offers. They are excessive wattage wise, but they dont cost notably more over similar quality 650w units (tho honestly 550w is also plenty fine for that build). 

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1 hour ago, GoldenLag said:

the TL;DR: with Jayz and powersupplies is the following:

  1. he subscribes to the "buy 80+ gold mindset", which sadly isnt a good mindset when it comes to powersupplies. in fact using 80+ for anything other than an efficiency indicator is silly. And there is more to powersupplies than efficiency. 
  2.   Hide contents

     

    then there is this where he starts off poorly by getting the first "fact" about powersupplies wrong. 

now i dont blame him for not knowing powersupplies, most dont. But making a factual video which has missconceptions and missunderstanding about powersupplies isnt exactly great. And if you dont know, in general at least read a piece or two by Aris before making a video. 

 

When it comes to powersupplies specifically, you can write off Jayz. He is an entertainment channel in the same range as LTT. 

 

 

if you want informative pieces on subjects like motherboards, Powersupplies etc etc. You need to look elsewhere compared to LTT and Jayz. For similar reasons, dont use Bitwit for powersupply guidance either.

 

hopefully this offered some insight. Hopefully this didnt come off as me just bashing tech youtubers. Its just that some really dont give good advice on powersupplies. 

 

MSI MPG A-GF 750 W 80+ Gold Certified Fully Modular ATX Power Supply (MPG A750GF) - PCPartPicker
Corsair RMx (2018) 750 W 80+ Gold Certified Fully Modular ATX Power Supply (CP-9020179-NA) - PCPartPicker

 

like pointed to earlier, either of these would be plenty fine, even if you were feeling fancy to add something like a 3080 or 3090 into it. They are for the time being very compelling offers. They are excessive wattage wise, but they dont cost notably more over similar quality 650w units (tho honestly 550w is also plenty fine for that build). 

Thank you for giving me reasons, now it's much more understandable why people had the reactions they had, this genuinely helped!
Pretty sure with how many times it's been recommended it, I'll probably pick up the Corsair the next time I get paid.

Cheers!

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2 hours ago, Sealion said:

yeah Gigabyte have made terrible GPUs but they've also made decent ones" and then NONE of the recommended PSUs in the replies are made by Gigabyte.

Well, as was already pointed out, they have one relatively okay series, Aorus AP-GM. Same OEM as the infamous bomb of (non-Aorus) P-GM but yeah, it doesn't blow up at least, and otherwise looks okay. It never was very popular tho, or cheap, and i personally didn't see it on US market at all, thus it wasn't recommended here.

But that's not the point. See, the 'don't buy X brand PSUs' sentiment is dangerously close to 'just buy Y brand PSUs instead', like you know, Seasonic, EVGA, or even Corsair ... That's wrong way of choosing a product, any product, not only a PSU. All these brands have examples of meh to bad PSUs in their lineups, some more, some less. So in the end, you should look at each specific PSU, not a brand as a whole.

Tag or quote me so i see your reply

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5 hours ago, ToboRobot said:

seasonic.

It's kinda crazy to think so many give this blanket "advice"

I have no idea why or how Seasonic got this god tier status but it's spread worldwide, same deal here in France and all over the Internet really

"Need a PSU? Buy a Seasonic"  who cares about the model or your personal needs, they're all perfect in each and every way

 

I've been hearing this "advice" for more than a decade and it's still going as strong as ever...

 

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9 hours ago, jazz9 said:

I have no idea why or how Seasonic got this god tier status but it's spread worldwide

they do a lot of sponsorships, so likely have a lot of mindshare in the techtuber sphere. Also hearsay is very powerful. 

9 hours ago, jazz9 said:

"Need a PSU? Buy a Seasonic"  who cares about the model or your personal needs, they're all perfect in each and every way

 

I've been hearing this "advice" for more than a decade and it's still going as strong as ever...

its funny, because they dont even make the best powersupplies. Like not even in the top 10 of consumer available PSUs. And arguably one of their better PSUs arent even sold by themselves (NZXT E-series). For some reason they just dont do Multirail PSUs. 

 

and their lineup is likey every other companies PSU lineup. There is good stuff and bad stuff. Currently the S12iii being a borderline unit. 

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On 5/22/2021 at 1:46 PM, Sealion said:

Hi all.

 

I recently watched a video from JayzTwoCents where he fixed a broken computer and in it he said that he wished the guy who owned said computer had told him he had a Gigabyte made power supply because he would've told him to stay far away from any Gigabyte power supplies because they don't know how to make a half-way decent power supply. After doing some light research he appears to be mostly correct after I've found post after tweet after video of people basically saying the same thing. That I should stay the hell away from power supplies made by Gigabyte.

 

I quickly requested a refund from Amazon and will get it when I return the Gigabyte 750w power supply (which I will do as soon as it arrives), but the question then becomes what brand power supply do I look for?

I'm looking for a 750w one and am building my first ever PC, primarily for video editing but also for gaming and streaming.
I assume from how often Linus uses a Corsair power supply in builds that the Corsair RM750 would be a good choice?
Let me know if you have any suggestions/tips on what other brands to avoid and if you have any recommendations please bear in mind I am a tad budget constricted so I wouldn't like to spend over £120/$170USD.

Cheers!

AX and RM series from Corsair are good. AX series has been rock solid servicing me well for years. If I was getting a new PSU right now, it would probably be either one of these series at 1000W (with "i" termination for voltage management)

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19 minutes ago, HumdrumPenguin said:

If I was getting a new PSU right now, it would probably be either one of these series at 1000W (with "i" termination for voltage management)

just fyi:

AX and AXi are not very comparable. 

 

AX is a singlerail Seasonic Prime PSU. The AXi is pretty much the best consumer available PSU on the market, being a unit made by Flextronics.

 

the "i" reffers to iCUE integration for monitoring. But in this case, unlike the HX and HXi (which are pretty much the same), AX and AXi are very different units. 

 

AX is pretty dissapointing for the typical retail price. Especially since HX and HXi are both better than it, but its a good singlerail unit. 

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2 minutes ago, GoldenLag said:

just fyi:

AX and AXi are not very comparable. 

 

AX is a singlerail Seasonic Prime PSU. The AXi is pretty much the best consumer available PSU on the market, being a unit made by Flextronics.

 

the "i" reffers to iCUE integration for monitoring. But in this case, unlike the HX and HXi (which are pretty much the same), AX and AXi are very different units. 

 

AX is pretty dissapointing for the typical retail price. Especially since HX and HXi are both better than it, but its a good singlerail unit. 

I had no idea. Thank you for the information. I knew the "i" referred to the integration it has with iCUE, but I thought there was no difference beyond that. I guess the next in line for me will be an AXi then.

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On 5/23/2021 at 10:29 AM, GoldenLag said:

For some reason they just don't do Multirail PSUs.

I've seen this term used a fair bit in relation to PSU's; when & why (what level of build) does it become a critical factor - or deal-breaker, as I saw as a reference above, too - in considering a (new) PSU?

I frequently edit any posts you may quote; please check for anything I 'may' have added.

 

Did you test boot it, before you built in into the case?

WHY NOT...?!

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1 minute ago, Eighjan said:

when & why (what level of build) does it become a critical factor - or deal-breaker, as I saw as a reference above, too - in considering a (new) PSU?

TL;DR:
Multirail OCP acts as an extra protection when a single OCP (+OPP) would be too lenient when it actually comes to protecting the system. 

 

Like drawing 850w through a single PCIe cable (70a, keep in mind voltage drops from short circutis etc would play a role). Ideally you want the protections to kick in before this. (Melted cables etc etc), its a relativly minor protection addition. 

 

Since it only becomes relevant when a OCP is too large, its only really relevant at 750w or higher. Since at 650w or below if you cant combine 2 rails to power GPUs, OCP could trip on some high current GPUs (depends on the PSU, a lot of PSUs allow you to combine 2 rails), it becomes somewhat of an annoyance, and wouldnt offer any meaningful protection. 

 

 

when it comes to high quality and high wattage PSUs for high end builds, you really should just get a multirail unit.

 

hopefully this cleared up some things. 

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@GoldenLag so; most typically with higher power GPU's of the likes of 2080ti, Titan or 30-series...?

Even multi cable EPS...?

 

What current load is a typical PCI-e cable rated for?  850w on a single 12v rail (~70A, as you said) does seem a lot to ask.

I frequently edit any posts you may quote; please check for anything I 'may' have added.

 

Did you test boot it, before you built in into the case?

WHY NOT...?!

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