psu PSU for overclocking a 7700k

[MrVint]

What Psu should i take for well overclocking a 7700k ?  

[manikyath]

what else would you have in said system? i'm guessing you're not *only* gonna have a 7700k, and the power supply needs to power the rest of it too

[MrVint]

1 minute ago, manikyath said:

what else would you have in said system? i'm guessing you're not *only* gonna have a 7700k, and the power supply needs to power the rest of it too

aorus gaming 5, rx 580, one SSD, one HDD, DVD reader/writer , 4 fans

[ARikozuM]

550W is good if you only have one GPU in the system that will be overclocked as well.

 

I could recommend something like a 550W G2/G3, Seasonic G-series, or Rosewill Capstones.

[manikyath]

Just now, MrVint said:

aorus gaming 5, rx 580, one SSD, one HDD, DVD reader/writer , 4 fans

now punch that list into pcpartpicker, look at what it recommends, add about 200 watts on top of that (round to the nearest avalable wattage) and buy something seasonic, corsair RMx or better (RMi, AX, AXi, HX, HXi), or evga G2/P2/G3/P3

[MrVint]

Just now, manikyath said:

now punch that list into pcpartpicker, look at what it recommends, add about 200 watts on top of that (round to the nearest avalable wattage) and buy something seasonic, corsair RMx or better (RMi, AX, AXi, HX, HXi), or evga G2/P2/G3/P3

thks dude

[Hunter259]

A 550 would work but you would be on the edge most of it's life. I'd go 650-750w IMO. 

[MrVint]

9 minutes ago, manikyath said:

now punch that list into pcpartpicker, look at what it recommends, add about 200 watts on top of that (round to the nearest avalable wattage) and buy something seasonic, corsair RMx or better (RMi, AX, AXi, HX, HXi), or evga G2/P2/G3/P3

Be Quiet ! Straight Power 10 CM, 700W this one looks fine !

[manikyath]

Just now, MrVint said:

Be Quiet ! Straight Power 10 CM, 700W this one looks fine !

should be all good.

 

if @STRMfrmXMN is alive today he could hop in for his blessing

[MrVint]

Just now, manikyath said:

should be all good.

 

if @STRMfrmXMN is alive today he could hop in for his blessing

why ?  

[manikyath]

Just now, MrVint said:

why ?  

because i use his PSU whitelist to remember what to and what not to recommend to people

[MrVint]

Just now, manikyath said:

because i use his PSU whitelist to remember what to and what not to recommend to people

Ahaha  

[Marinatall_Ironside]

Yeah I'd recommend a Seasonic (X-series, PRIME Gold), EVGA (G2/G3, P2), or a Corsair power supply (RMi, RMx, HX, HXi, or AXi). Just make sure that a) there's enough wattage for the whole system (up to ~760 should be good for your setup), and b) the 12V rails have sufficient amperage headroom (at least 50 amps) to properly power the components. This is just as important as the wattage rating. The 5V and 3.3V rails should be good enough for the subsystems in all the components that need it, but the 5V and 3.3V rails won't be hit as hard as the 12V rails.

 

I'll be using the Corsair AX760i as an example to show you what you should be looking for. For reviews, I recommend HardOCP (these guys follow a pass/fail and no compromises basis as far as I've seen in their reviews), Hardware Secrets, and JohnnyGURU (as good as his reviews are, I feel that he's a little too lax on scoring), as they have the necessary equipment and background to review the units to both a) validate ratings according to the labels, b) validate the quality of the unit in question, and c) test for any safeties in the unit to protect any connected components in the event of brown-outs, short-circuits, overloads, etc.

Quote

AC Input: 100-240V

AC Current: 10-5A

Frequency: 50 Hz to 60 Hz

 

DC Output: +3.3V, +5V, +12V, -12V, -5vsb (standby)

Max amp/wattage load (+3.3V and +5V): 125W @ 25A

Max amp/wattage load (+12V): 759.6W @ 63.3A (this number is important, as your CPU and GPU are going to be the most power-hungry components.)

Max amp/wattage load (-12V): 9.6W @ 0.8A

Max amp/wattage load (-5vsb): 15W @ 3A

Total power: 760 watts

 

[STRMfrmXMN]

39 minutes ago, Hunter259 said:

A 550 would work but you would be on the edge most of it's life. I'd go 650-750w IMO. 

Not even slightly. A 580 and 7700K wouldn't even push 300W if you tried.

 

39 minutes ago, MrVint said:

Be Quiet ! Straight Power 10 CM, 700W this one looks fine !

Eh, you can do better. Check the PSU tier list in my signature and see if anything tier 2 is available to you. 500W is plenty for your system.

[Hunter259]

9 hours ago, STRMfrmXMN said:

Not even slightly. A 580 and 7700K wouldn't even push 300W if you tried.

 

Eh, you can do better. Check the PSU tier list in my signature and see if anything tier 2 is available to you. 500W is plenty for your system.

Wtf are you smoking? 

http://www.guru3d.com/articles_pages/msi_radeon_rx_580_gaming_x_review,5.html

http://www.anandtech.com/show/10968/the-intel-core-i7-7700k-91w-review-the-new-stock-performance-champion/11

 

Easily 300w together with an OC'ed 7700k and a stock 580. Overclock the 580 and now you are getting into 350w+ by themselves. Everything else would get you into 400w+ range which load the PSU around 80% for the entirety of it's life assuming he doesn't get a more power hungry card. Would a 550 work? Yeah. Is it something I recommend given the small price increase for another 100w? No. Not at all.

[STRMfrmXMN]

8 minutes ago, Hunter259 said:

Wtf are you smoking? 

http://www.guru3d.com/articles_pages/msi_radeon_rx_580_gaming_x_review,5.html

http://www.anandtech.com/show/10968/the-intel-core-i7-7700k-91w-review-the-new-stock-performance-champion/11

 

Easily 300w together with an OC'ed 7700k and a stock 580. Overclock the 580 and now you are getting into 350w+ by themselves. Everything else would get you into 400w+ range which load the PSU around 80% for the entirety of it's life assuming he doesn't get a more power hungry card. Would a 550 work? Yeah. Is it something I recommend given the small price increase for another 100w? No. Not at all.

I'm not smoking anything. From both your articles, a 7700K at stock used 90W, an RX 580 that came pre-overclocked demanded 191W, that totals 280W, you're not gonna demand much more power from OCing a quad-core CPU to 1.35V (maybe 10-15W) and the RX 580 isn't a good overclocking GPU so even if you maxed the voltage sliders out, the GPU is still drawing 75W PCIe power and 150W 8-pin PCIe max.

 

You can't even add math up to get to 350W AC power draw with that hardware.

 

A 550W would not be choked by that hardware in the slightest.

[MrVint]

8 hours ago, STRMfrmXMN said:

I'm not smoking anything. From both your articles, a 7700K at stock used 90W, an RX 580 that came pre-overclocked demanded 191W, that totals 280W, you're not gonna demand much more power from OCing a quad-core CPU to 1.35V (maybe 10-15W) and the RX 580 isn't a good overclocking GPU so even if you maxed the voltage sliders out, the GPU is still drawing 75W PCIe power and 150W 8-pin PCIe max.

 

You can't even add math up to get to 350W AC power draw with that hardware.

 

A 550W would not be choked by that hardware in the slightest.

My bequiet 600 w 80 bronze + is enough / safe for oc my 7700K ?

[Princess Luna]

43 minutes ago, MrVint said:

My bequiet 600 w 80 bronze + is enough / safe for oc my 7700K ?

Yup it is.

 

Even this one would be: https://pcpartpicker.com/product/TgW9TW/seasonic-power-supply-m12ii520bronze

[Hunter259]

8 hours ago, STRMfrmXMN said:

I'm not smoking anything. From both your articles, a 7700K at stock used 90W, an RX 580 that came pre-overclocked demanded 191W, that totals 280W, you're not gonna demand much more power from OCing a quad-core CPU to 1.35V (maybe 10-15W) and the RX 580 isn't a good overclocking GPU so even if you maxed the voltage sliders out, the GPU is still drawing 75W PCIe power and 150W 8-pin PCIe max.

 

You can't even add math up to get to 350W AC power draw with that hardware.

 

A 550W would not be choked by that hardware in the slightest.

http://www.tomshardware.com/reviews/amd-radeon-rx-580-review,5020-6.html

That card has near 0 head room that Sapphire hasn't used. And generally yeah you will suck more power.

https://rog.asus.com/articles/guides/the-kaby-lake-overclocking-guide/

Even used your 1.35v arguement and they got 131W by itself. 

131+224=355W

Add another 50 due to everything else that also needs power, really its more in the 30's but I enjoy head room, and we are now at 405W which is at around 77% power consumption from the PSU. 

 

So. Hows that math going?

[STRMfrmXMN]

2 hours ago, Hunter259 said:

http://www.tomshardware.com/reviews/amd-radeon-rx-580-review,5020-6.html

That card has near 0 head room that Sapphire hasn't used. And generally yeah you will suck more power.

https://rog.asus.com/articles/guides/the-kaby-lake-overclocking-guide/

Even used your 1.35v arguement and they got 131W by itself. 

131+224=355W

Add another 50 due to everything else that also needs power, really its more in the 30's but I enjoy head room, and we are now at 405W which is at around 77% power consumption from the PSU. 

 

So. Hows that math going?

My point still stands, even the highest end pre-OC'd card hits 220W under peak load. The i7 hitting 131W equates to 355W. Keep in mind these are all overclocked to voltages that most people will never touch. Less than 300W demanded from the PSU is what the average user can realistically expect unless they do plan to OC their CPU on water to 1.35V and their GPU to get to 80C if they're cozy with that. And my point still stands. 350W of OC'd hardware is still not stressing a 550W unit. 

 

The math still dictates that there's no reason to spend more money on something you don't need. Heck, if you were in a pinch and just so happened to have an OC'd 7700K and SLI GTX 1080s you could run on a 550W PSU without issues http://www.guru3d.com/articles-pages/geforce-gtx-1080-2-way-sli-review,4.html 

 

Here's an older OC3D TV video where his system uses a 4670K and a 780 Ti comfortably on a 450W PSU, demanding 420W from the wall. Factory in napkin math for efficiency of the RM450 used in that video (80 PLUS Gold, roughly 87% efficient at that load, could vary anywhere from 87-90%) and he's demanding about 365W from the PSU itself. With a super power hungry 780 Ti which uses more power than a 580, even at factory voltage, I'd say OP is comfortable on a 550W unit with headroom to spare.

 

[STRMfrmXMN]

2 hours ago, MrVint said:

My bequiet 600 w 80 bronze + is enough / safe for oc my 7700K ?

If it's the Straight Power 10 you mentioned earlier then yes, you're more than fine and have room to spare.

[Princess Luna]

@STRMfrmXMN Are drivers and other stuff power consumption simply negligible? say he has 4 HDD + 1 SSD, some fans connected through molex and what not?

[FirstOfHisName]

21 hours ago, ARikozuM said:

550W is good if you only have one GPU in the system that will be overclocked as well.

 

I could recommend something like a 550W G2/G3, Seasonic G-series, or Rosewill Capstones.

or a CXM

[Hunter259]

20 minutes ago, STRMfrmXMN said:

My point still stands, even the highest end pre-OC'd card hits 220W under peak load. The i7 hitting 131W equates to 355W. Keep in mind these are all overclocked to voltages that most people will never touch. Less than 300W demanded from the PSU is what the average user can realistically expect unless they do plan to OC their CPU on water to 1.35V and their GPU to get to 80C if they're cozy with that. And my point still stands. 350W of OC'd hardware is still not stressing a 550W unit. 

 

The math still dictates that there's no reason to spend more money on something you don't need. Heck, if you were in a pinch and just so happened to have an OC'd 7700K and SLI GTX 1080s you could run on a 550W PSU without issues http://www.guru3d.com/articles-pages/geforce-gtx-1080-2-way-sli-review,4.html 

 

Here's an older OC3D TV video where his system uses a 4670K and a 780 Ti comfortably on a 450W PSU, demanding 420W from the wall. Factory in napkin math for efficiency of the RM450 used in that video (80 PLUS Gold, roughly 87% efficient at that load, could vary anywhere from 87-90%) and he's demanding about 365W from the PSU itself. With a super power hungry 780 Ti which uses more power than a 580, even at factory voltage, I'd say OP is comfortable on a 550W unit with headroom to spare.

 

I never said it wouldn't work it's just not what I would buy given the budget which could spend all of $10-15 more for a little more power which will push the unit less and be more efficient while doing so.

 

1.35v is really not that crazy of a voltage to run and is pretty common. 1.4 is where you get most people needing water or just not wanting to push that far.

 

GPU won't go to 80c if they buy a card with a good cooler

http://www.guru3d.com/articles-pages/msi-radeon-rx-580-gaming-x-review,37.html

http://www.guru3d.com/articles_pages/asus_radeon_rx_580_strix_review,37.html (Holy fucking shit that card is cool)

 

I am very much someone who doesn't want to push a PSU at 80+% of it's rating for it's life span. It's, IMO, just another way to cheap out on a PSU. A solid 80+ Gold 650W will cost ~$65 and a 80+ Bronze 750/850W is about the same. I just don't get the point in saving $10-15 and running a PSU harder.

[STRMfrmXMN]

32 minutes ago, Princess Cadence said:

@STRMfrmXMN Are drivers and other stuff power consumption simply negligible? say he has 4 HDD + 1 SSD, some fans connected through molex and what not?

Desktop hard drives are about the only thing I would say that isn't GPU or CPU hardware that I'd consider to be non-negligible. 4 HDDs can use a pretty serious amount of power, especially at boot when they all have to spin up. SSDs, laptop HDDs, LEDs, USB peripherals, RAM, etc, are negligible. 

 

22 minutes ago, Hunter259 said:

I never said it wouldn't work it's just not what I would buy given the budget which could spend all of $10-15 more for a little more power which will push the unit less and be more efficient while doing so.

 

1.35v is really not that crazy of a voltage to run and is pretty common. 1.4 is where you get most people needing water or just not wanting to push that far.

 

GPU won't go to 80c if they buy a card with a good cooler

http://www.guru3d.com/articles-pages/msi-radeon-rx-580-gaming-x-review,37.html

http://www.guru3d.com/articles_pages/asus_radeon_rx_580_strix_review,37.html (Holy fucking shit that card is cool)

 

I am very much someone who doesn't want to push a PSU at 80+% of it's rating for it's life span. It's, IMO, just another way to cheap out on a PSU. A solid 80+ Gold 650W will cost ~$65 and a 80+ Bronze 750/850W is about the same. I just don't get the point in saving $10-15 and running a PSU harder.

But if the PSU would work fine and then some (a 550W G2 with a 7-10 year warranty depending on when you bought yours) and costs less, why spend more money? Any PSU worth its salt won't struggle at the occasional 80% load for the span of its warranty and OP's PSU should outlast its warranty pretty comfortably. Efficiency is also a non-issue. The only definitives with regards to efficiency are the ones at 20%, 50%, and 100% load. For all we know a 550G2 at 80% load is more efficient than a 650G2 at 67% load. And even then, the savings on your power bill are unnoticeable. 

 

I guess I'm not one to OC my system to 1.35V since my old 4670K died before I got a chance to test it on a board that would run at voltage that high, but that's what your manufacturer recommends not going above. Once you get to 1.4V there's silicon degradation over time that's fairly noticeable on the likes of a 7700K and that's a very irritating thing because it takes some troubleshooting to figure out why your OC of 3 years has been stable and now your system's apps are crashing occasionally.

 

Sure, a good cooler won't let the card get super hot but running a 580 at voltage that high without really, really good airflow in a non- test-bench system is likely to yield temperatures that high. My 970 consumes a similar amount of power to the 580 and if I push the voltage as high as my fairly solid OCing card will go in my NZXT S340 with 2 front fans and an exhaust fan (2 very pricey Noctua fans, mind you) it will hit 80C with the GPU fans at 50% which is about where my noise tolerance ends for EVGA's ACX cooler. 

 

The question is - why not? You're not running your PSU at that load constantly, I highly doubt your room is hitting 50C, and the PSU, if it's decent, has tolerances it achieves in a hot room under max load that don't even begin to touch what the average person playing video games on their PC will be demanding, which is much less stressful. Would you not trust an EVGA 1000P2 with three GTX 980sin SLI with a 6850K? It'll shut off if it begins to be too much and 1000W is enough for that hardware, hitting around 900W under some hefty OC. EVGA offers a 10 year warranty on said PSU.