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PSU recommendation for 8700k and 2080 [OC]

Hello,

I'm building my first pc, this is what I have (I' ll overclock):

-MSI z370 gaming pro carbon
-Intel I7 8700k (delid)
-Asus RTX 2080 Dual OC

And I'll get:
-2x8GB DDR4 3000/3200
-500GB 970 evo/pro
-2x3TB HDD

What PSU would you recommend me?

I was thinking 650W/750W, I'm leaning toward the Corsair RM850x (it costs the same as the 650 amd 750 at 120€), what do you think?

 

Thanks!

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2 minutes ago, Crunchy Dragon said:

RM850x is a pretty good unit, a little bit overkill for your uses, but a good choice nonetheless.

Yeah I know it's overkilled, what would you recommend at 650/750W that may be cheaper?

 

Thanks

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2 minutes ago, leyo96 said:

Yeah I know it's overkilled, what would you recommend at 650/750W that may be cheaper?

 

Thanks

A 650W unit would be perfectly fine. You could alternatively look at the EVGA G2 and SeaSonic Focus Plus Gold units, any of those 3 options is a solid and reliable PSU.

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1 minute ago, leyo96 said:

Yeah I know it's overkilled, what would you recommend at 650/750W that may be cheaper?

 

Thanks

RM750x?

 

RMx units are Tier 1. Lower wattage units are usually cheaper than their higher output brethren, and 750W is a solid wattage.

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Bitfenix formula gold 550/650 is a good option.

I WILL find your ITX build thread, and I WILL recommend the SIlverstone Sugo SG13B

 

Primary PC:

i7 8086k - EVGA Z370 Classified K - G.Skill Trident Z RGB - WD SN750 - Jedi Order Titan Xp - Hyper 212 Black (with RGB Riing flair) - EVGA G3 650W - dual booting Windows 10 and Linux - Black and green theme, Razer brainwashed me.

Draws 400 watts under max load, for reference.

 

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3 minutes ago, Crunchy Dragon said:

RM750x?

 

RMx units are Tier 1. Lower wattage units are usually cheaper than their higher output brethren, and 750W is a solid wattage.

Unfortunately 650, 750 and 850 RM x all cost 120€ in Italy

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Just now, leyo96 said:

Unfortunately 650, 750 and 850 RM x all cost 120€ in Italy

If they're all the same price, why not get the 850W?

Quote or tag me( @Crunchy Dragon) if you want me to see your reply

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6 minutes ago, JM21 said:

A 650W unit would be perfectly fine. You could alternatively look at the EVGA G2 and SeaSonic Focus Plus Gold units, any of those 3 options is a solid and reliable PSU.

They all 3 cost the same. At this point the RM850x looks like the better deal

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4 minutes ago, fasauceome said:

Bitfenix formula gold 550/650 is a good option.

I think I prefer a modular PSU for cable management.

3 minutes ago, Crunchy Dragon said:

If they're all the same price, why not get the 850W?

Probably the one I'm going to pick

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8 minutes ago, leyo96 said:

They all 3 cost the same. At this point the RM850x looks like the better deal

How is it possible that the RM1000x costs only 8€ more than the 650x?

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30 minutes ago, leyo96 said:

What PSU would you recommend me?

I was thinking 650W/750W, I'm leaning toward the Corsair RM850x (it costs the same as the 650 amd 750 at 120€), what do you think?

As already mentioned by others, 850W is unnecessary for your system.
If it helps, for your system with an 8700K + RTX 2080, even with overclocking (5GHz on CPU) you would still be under 500W, probably closer to the low-mid 400W end of the scale. Less if you're not overclocking the CPU. So based on that I'd aim for a good quality 550W PSU, such as the RM550x since you're already looking at the RMx units. Not sure which European country you're in, but the RM550x (2018) can be had for around 90 Euro. https://de.pcpartpicker.com/product/bqVD4D/corsair-rmx-2018-550w-80-gold-certified-fully-modular-atx-power-supply-cp-9020177-na


If you're in Europe then the Be Quiet Straight Power 11 550W is a good choice at around 95 Euro.
The Bitfenix Whisper M 550W is around 90 Euro and would also be a good pick.

 

15 minutes ago, Crunchy Dragon said:

If they're all the same price, why not get the 850W?

One problem is that the RMx units use a single rail design so with a higher wattage unit if something goes wrong, it can go very wrong before OPP trips to shut down (compared to a 'safer' multi rail system with OCP on each rail which will shut down sooner/at lower values). Though, whether or not this is a real concern you should be worried about... ¯\_(ツ)_/¯  (I run a RM750x and I'm not concerned)

Another thing to consider is that on *some* higher wattage PSUs, the fan will run at a higher RPM and be louder. Though, that really depends on the individual units in question, and AFAIK all of the RMx series of PSUs are very quiet anyway.

Though the benefit is you do get the extra PCIe & EPS connectors/cables with the RM750x and higher wattage. Which is nice.

Edited by Spotty

CPU: Intel i7 6700k  | Motherboard: Gigabyte Z170x Gaming 5 | RAM: 2x16GB 3000MHz Corsair Vengeance LPX | GPU: Gigabyte Aorus GTX 1080ti | PSU: Corsair RM750x (2018) | Case: BeQuiet SilentBase 800 | Cooler: Arctic Freezer 34 eSports | SSD: Samsung 970 Evo 500GB + Samsung 840 500GB + Crucial MX500 2TB | Monitor: Acer Predator XB271HU + Samsung BX2450

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1 minute ago, leyo96 said:

How is it possible that the RM1000x costs only 8€ more than the 650x?

Store selling them probably bought a heap of them during the mining craze when everyone wanted high wattage PSUs, and now after the bitcoin crash has a bunch of high wattage units that no-one wants to buy, so is dropping prices to clear them out?
Manufacturer rebates [provided to the seller]?
Discounts & specials?
There's also two versions of the RMx series of PSUs. The RMx and the RMx (2018). So pricing may vary slightly between the two different series.

¯\_(ツ)_/¯

 

What country are you buying in? Do you have a link to the store(s) you're looking at?

CPU: Intel i7 6700k  | Motherboard: Gigabyte Z170x Gaming 5 | RAM: 2x16GB 3000MHz Corsair Vengeance LPX | GPU: Gigabyte Aorus GTX 1080ti | PSU: Corsair RM750x (2018) | Case: BeQuiet SilentBase 800 | Cooler: Arctic Freezer 34 eSports | SSD: Samsung 970 Evo 500GB + Samsung 840 500GB + Crucial MX500 2TB | Monitor: Acer Predator XB271HU + Samsung BX2450

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6 minutes ago, Spotty said:

If it helps, for your system with an 8700K + RTX 2080, even with overclocking (5GHz on CPU) you would still be under 500W, probably closer to the low-mid 400W end of the scale

Using Coolermaster psu calculator it says my load wattage it's 569W with OC on the cpu and gpu

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5 minutes ago, Spotty said:

What country are you buying in? Do you have a link to the store(s) you're looking at?

Italy, Amazon Italy

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Just now, leyo96 said:

Using Coolermaster psu calculator it says my load wattage it's 569W with OC on the cpu and gpu

So it's really ~450W then.
Coolermaster PSU calculator (Outervision) is not accurate and will overestimate by at least 100W. It makes money by recommending PSUs and providing affiliate links to go buy the PSUs it recommends. Higher wattage PSUs have higher profit margins, so it will tell you that you need a higher wattage PSU just so they can make more money from you.

I just put in an i3 8100 - No other parts listed - and it gave me 173W for just the CPU alone.
Pentium G4560 by itself? 165W according to Cooler Master PSU calculator.

 

They just add 100W on top of what the CPU actually draws in order to convince you to buy a more expensive, higher wattage PSU.
 

1 minute ago, leyo96 said:

Italy, Amazon Italy

Hmm, okay seems prices in Italy are a little bit higher than Germany (where I was taking my prices from earlier).
Looks like the RMx units you were looking at are the older, longer RMx units, but that doesn't really matter as both the RMx and RMx (2018) are good units. Might explain why pricing between the different units is a bit inconsistent though.
Looking at prices, the Bitfenix Whisper M 550W and the Straight Power 11 550W are showing as 120 Euro on Amazon Italy. So the RM550x for 103 euro would be my pick of the bunch. Though if you did still want the RM750x/RM850x instead for whatever reason then it doesn't really hurt having more wattage than you need and you're still getting a good quality PSU. You do get extra PCIe and EPS cables with the RM850x if that's important to you.

CPU: Intel i7 6700k  | Motherboard: Gigabyte Z170x Gaming 5 | RAM: 2x16GB 3000MHz Corsair Vengeance LPX | GPU: Gigabyte Aorus GTX 1080ti | PSU: Corsair RM750x (2018) | Case: BeQuiet SilentBase 800 | Cooler: Arctic Freezer 34 eSports | SSD: Samsung 970 Evo 500GB + Samsung 840 500GB + Crucial MX500 2TB | Monitor: Acer Predator XB271HU + Samsung BX2450

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12 hours ago, Spotty said:

So it's really ~450W then.

Yeah MSI psu calculator gives me 470W.

The thing is: are you sure I'm gonna be fine with 550W? I don't want to have the psu alway running close to 100% to save 20€.

 

What about corsair TXM series? They are significantly cheaper, what do you think about them?

 

Thanks

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2 hours ago, leyo96 said:

Yeah MSI psu calculator gives me 470W.

The thing is: are you sure I'm gonna be fine with 550W? I don't want to have the psu alway running close to 100% to save 20€.

 

What about corsair TM series? They are significantly cheaper, what do you think about them?

 

Thanks

The Corsair TXM ? If so then that is also fine.

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32 minutes ago, lee32uk said:

The Corsair TXM ? If so then that is also fine.

Yes that one, the TX650M it's at 89€ compared to 120€ of RM850x and 127€ of RM1000x (I know it's wayyyy overkilled, but for the same price I'd rather get something that most of the times runs fanless and at the best efficiency and that I won't never change if I'd ever need more power in the future).

 

What changes between the TXM and the RMx other than one is fully modular and the other semi?
Do you think being fully modular it's worth the extra 30/37€? (I've never built a pc so I don't know how much the semi modular impacts cable management)

 

Thanks

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3 hours ago, leyo96 said:

Yeah MSI psu calculator gives me 470W.

The thing is: are you sure I'm gonna be fine with 550W? I don't want to have the psu alway running close to 100% to save 20€.

 

What about corsair TXM series? They are significantly cheaper, what do you think about them?

 

Thanks

Too loud.

What about Bitfenix Whisper M? 650W model would give you more PCIe and EPS cables, so even that unit makes sense, unlike some other 650W PSUs on the market

Ex-EX build: Liquidfy C+... R.I.P.

Ex-build:

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be Quiet! Straight Power 11 750w – sold

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6 minutes ago, Quadriplegic said:

Too loud.

What about Bitfenix Whisper M? 650W model would give you more PCIe and EPS cables, so even that unit makes sense, unlike some other 650W PSUs on the market

It's 96€ in Italy. Would you pick this compared to the others? (Check my comment above yours to see the prices)

 

Thanks

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9 minutes ago, leyo96 said:

It's 96€ in Italy. Would you pick this compared to the others? (Check my comment above yours to see the prices)

 

Thanks

Would 140% pick it over TXm, especially given €7 difference.

Would I pick it over RMx? Hard to say. Whisper would be more than enough for your unit and you would still have headroom for 2080 Ti.

Ex-EX build: Liquidfy C+... R.I.P.

Ex-build:

Meshify C – sold

Ryzen 5 1600x @4.0 GHz/1.4V – sold

Gigabyte X370 Aorus Gaming K7 – sold

Corsair Vengeance LPX 2x8 GB @3200 Mhz – sold

Alpenfoehn Brocken 3 Black Edition – it's somewhere

Sapphire Vega 56 Pulse – ded

Intel SSD 660p 1TB – sold

be Quiet! Straight Power 11 750w – sold

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23 minutes ago, leyo96 said:

It's 96€ in Italy. Would you pick this compared to the others? (Check my comment above yours to see the prices)

 

Thanks

If the Bitfenix Whisper is only 7 euros more then go with that. As mentioned by Quad it is quieter overall. Only thing I don't like on it is the bulky 24 pin cable but not really a major issue.

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4 minutes ago, Quadriplegic said:

Would 140% pick it over TXm, especially given €7 difference.

Would I pick it over RMx? Hard to say. Whisper would be more than enough for your unit and you would still have headroom for 2080 Ti.

 

Just now, lee32uk said:

If the Bitfenix Whisper is only 7 euros more then go with that. As mentioned by Quad it is quieter overall. Only thing I don't like on it is the bulky 24 pin cable but not really a major issue.

If 650W it's more than enough for a i8700k OC and a rtx 2080 OC and all the rest (and I'm 99% sure it is), I'd definetely get the whisper and save 31€. I don't need 850w, neither 1000w (other than running most of the time fanless), so I see no point in spending more where I can get the same thing for 31€ less.

Am I right?

 

btw thank you guys for the support!

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Yep 650W is enough ?

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