Psu for 570 sli OC

[raif89]

so i was wondering if a seasonic 850x gold would be enough for a pc with a 2600k OC to 4.9ghz with 2 570's oc to 850/1700/2200MHz @1.025V along with an ssd and hdd

 

[17seconds]

"GeForce GTX 570 in 2-way SLI
A second card requires you to add another ~225 Watts. You need a 750+ Watt power supply unit if you use it in a high-end system (800+ to a KiloWatt is recommended if you plan on any overclocking)."

"Our test system is based on a power hungry Core i7 965 / X58 system. This setup is overclocked to 3.75 GHz. Next to that we have energy saving functions disabled for this motherboard and processor (to ensure consistent benchmark results). On average we are using roughly 50 to 100 Watts more than a standard PC due to higher CPU clock settings, water-cooling, additional cold cathode lights etc."
http://www.guru3d.com/article/geforce-gtx-570-sli-review/13

 

[goatsword]

Google SLI Zone for specifics on this. Also, Antec has a great calculator for overall system wattage.

 

[raif89]

ive already done both, however no one seems to be able to tell me if a 850 watt will be enough when BOTH cards are oc'ed as well as the ram and cpu

 

[Snipergod87]

I think the amount of wattage the OC will pull is dependant on the voltage being applied to the CPU, not all CPU's OC the same, some will require more power at higher speeds some do not.

Personally I think your 850x will be good, but I cannot gurantee it. Typically not every component is not stressed to the max all at the same time during standard operation. If you taxed everything to 100% then some stability issues might occur.

No gurantee you will hit 4.9Ghz and be able to OC those cards to those setting either. I dont think anyone will have an actual answer for you as well the power draw of those system specs havent been tried out yet.

 

[17seconds]

Your 850 watts is good. The info I gave said 800+ watts for a heavily overclocked and abused system.

 

[raif89]

Best answer selected by raif89.

 

[raif89]

ah ok well then i guess ill be ok with my psu, though i could get a bigger one to be on the safe side....

 

[JackNaylorPE]

The ones in Bold or perhaps (haven't seen the reviews yet), one of the new AX series from Corsair or the HCP / HCG series from Antec

For comparison purposes , the list below contains performance ratings (10 scale) at jonnyguru.com / prices as per newegg on 12/31/2010 and ones w/ double asterisks (**) made it onto silentpcreview.com's Editor's Choice List meaning they excelled at both electronic and acoustic performance:


Antec SG-850 - 10.0 ($250) **
Antec CP-850 - 10.0 ($120) **
XFX 850W Black Edition 10.0 ($110)
Corsair HX850 850W - 10.0 ($170)

Antec TruePower Quattro (TPQ-850) - 9.5 ($150)
Corsair TX850 - 9.5 ($130)
Seasonic M12D 850W - 9.5 (NLA) **
NorthQ Giant Connector 850W - 9.5 (NFS)
Etasis ET850 - 9.5 (NLA)
Silverstone Zeus ST85ZF - 9.5 (NLA)

Enermax Revolution 85+ 850W - 9.0 (OOS)

Thrmaltake Toughpower XT 850W - 8.5 (NLA)
OCZ Z Series 850W - 8.5 ($165)

NorthQ Black Magic Flex 850W - 8.0 (NFS)
Coolmax CTG-850 - 8.0 (NFS)

SilverStone Decathlon DA850 - 7.5 (NLA)
Enermax Galaxy DXX 850W EGX850EWL - 7.5 (NFS)

SilverStone Strider ST85F - 7.0

Silverstone Element ST85EF 850W - 6.0


OOS - Out of Stock / NFS - Not For Sale / NLA = No Longer Available

 

[raif89]

interesting to see that my seasonic gold x 850w list on that list..... hmm i wonder if i should switch it to the corsair hx850? but isn't it the same unit? doesn't seasonic make the psu's that corsair uses for their gold series?

 

[17seconds]

Seasonic makes good PSU's, and I think that Corsair does use Seasonic rebranded units.

 

[Mousemonkey]

This topic has been closed by Mousemonkey