Sli gtx 580 ps?

[asayrix]

Hello guys I am new to this forum and PC so please forgive me if my question has been asked before also forgive my English since it is not my primary language. Now My question is I made a gaming rig 4 weeks ago my specs are;

MOBO: ASUS P8-Z68 DELUXE
CPU: INTEL I7 2600K OC TO 4.4 GHZ
RAM:G-SKILL RIPJAWS 2X 4GB =8GB 1600 MHZ
GPU: MSI GTX 580 TWIN FROZR II
SSD: CORSAIR FORCE 2 60 GB
HDD: SEAGATE 500 GB 7200 RPM
CASE: COOLER MASTER HAF X
FANS:4X 120 MM LED FANS 2 X ON TOP 1X ON SIDE AND 1 X ON FRONT AND 1X 140 MM ON BACK
POWER SUP: 800 W 80 C CORSAIR GS800

I am thinking to get another gtx 580 for SLI would you think my power sup can handle it? I am not going to OC my GPU's

Thank you for reading and for your time.

 

[boxleitnerb]

Simply: Yes.

 

[notty22]

You should be 'ok'.
Here is under gaming just the gpu's.
http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_580_SLI/23.html

Here is a complete rig consumption during Crysis :
http://www.anandtech.com/show/4008/nvidias-geforce-gtx-580/17

 

[Annisman*]

A good way to find out is to buy a simple wattage reader, and test when you have the cards installed. If it is coming anywhere near your 800W limit, which it probably won't, then upgrade to a better power supply.

 

[toyota]

that power supply would be ok for stock cards. it would be pushed VERY hard if you ever planned on overclocking the gtx580 cards.

 

[asayrix]

ok guys thank you for your answer, by they way I have never used wattage reader before so If I buy one how would I use it sorry for the noob question but I am very new to this kind of stuff and I dont wanna screw it up.

 

[ZipSpeed]

Try a Kill-a-watt. I believe Newegg sells them.

 

[asayrix]

ok guys thx alot so basically what I understand from your comments is that my gaming rig with 800 w 80 C PS can handle SLI gtx 580 without any OC on the GPU but small OC on my CPU while playing games while all the settings are cranked up but It should be under control of watt reader just to be sure.

 

[Arkadrel]

That Aandtech power during cysis load @ 620watts is not with a 2600k@4.4ghz.

My guess is if your useing 2 x 580s SLI with your setup, and CPU@4.4ghz, your probably around the 700+ watts used. You also have more HDD's/Fan's than the pc build used in the list.

Your PSU should be able to pull that though.


1) DONT load up furmark or the like, and turn off those features that limit power use.
That would probably overload you and kill hardware.

 

[lehtv]

+1 on using a kill-a-watt to find out for yourself how much power is used. Remember to convert wall watts (AC) back to PSU output watts (DC). I.e. multiply by 0.85 in the case of GS800. I'd expect it to be just fine though. Hardwaresecrets overloaded the PSU and found it maxed out their 1000 watt tester, despite being nominally an 800 watt unit!

 

[asayrix]

which futures are you talking about mate? I am not a benchmark guy I dont really care my only concern is to play new and next gen games at ultra settings with a decent fps and visuals without ruining my pc

 

[ArchAngel777]

It is difficult to fully load the GPUs + CPU at the same time, unless you are running synthetic benchmarks. When I run BF3 @ Ultra with TRAA Set to 8X, my heavily overclocked Core i7 920 and 460 GTX SLI only pulls 450 watts from the wall. At 85% efficiency, that is 382 watts of DC power. I have a Corsair TX650 that provides 624W on the 12v rails.

Now, I also use vsync and don't do any folding. So obviously, it would be possible to increase power consumption. However, when I ran Prime 95 on all cores and ran ATI Tool's Artifact tester (loaded GPUs up 100%) it pulled 560 watts from the wall, which, when converting for around 85% efficiency is 476 watts. Still plenty of 'breathing' room. Additionally, a quality power supply should be able to handle a spike that exceeds the load rating without causing problems.

Also, keep in mind the PSU is rated at a certain constant wattage output. It should be able to keep its load 24/7 for the warranty period. Sure, some die and some don't just like any other component.

Bottom line: People way, way, way over estimate power supply requirements. Not sure when this started happening, but it is absurd to see people advising others that they need 1K wattage over 12v rails for 580 SLI setup. For three, yes, but not two.

 

[toyota]

um a 1000 watt psu is VERY good idea for system with two overclocked gtx580 cards and overclocked cpu. if they are highly overclocked with additional voltage then any 800 watt psu would be within 10% of its limit during full load.

for a system with three overclocked gtx580, a 1000 watt would NOT be enough unless you want to push the psu really hard an overclocked gtx580 can easily pull over 300 watts so three of them would be over 900 watts right there.

 

[ArchAngel777]

um a 1000 watt psu is VERY good idea for system with two overclocked gtx580 cards and overclocked cpu. if they are highly overclocked with additional voltage then any 800 watt psu would be within 10% of its limit during full load.

for a system with three overclocked gtx580, a 1000 watt would NOT be enough unless you want to push the psu really hard an overclocked gtx580 can easily pull over 300 watts so three of them would be over 900 watts right there.

I guess you also missed the part where he is not going to overclock his GPUs? Also where he has a 2600K @ 4.4Ghz, which in no way uses as much power as a i7 @ 4Ghz. No way does that system even need anything close to a 1000 Watter. His 800 should be just fine. But hey, go ahead and tell him it is not and have him spend $200 more on another PSU. After all, it isn't your money, is it?

 

[toyota]

I guess you also missed the part where he is not going to overclock his GPUs? Also where he has a 2600K @ 4.4Ghz, which in no way uses as much power as a i7 @ 4Ghz. No way does that system even need anything close to a 1000 Watter. His 800 should be just fine. But hey, go ahead and tell him it is not and have him spend $200 more on another PSU. After all, it isn't your money, is it?

um if you look at my earlier comment, I said he would be fine with stock cards.

many people that get a gtx580 sli setup will oc though so that why we typically recommend a psu with plenty of wiggle room.

 

[OILFIELDTRASH]

Are power supplies rated at AC or dc watts?

 

[ArchAngel777]

Are power supplies rated at AC or dc watts?

DC

 

[ArchAngel777]

um if you look at my earlier comment, I said he would be fine with stock cards.

many people that get a gtx580 sli setup will oc though so that why we typically recommend a psu with plenty of wiggle room.

Fair enough, I didn't see your post and after reading it, I agree.

 

[ArchAngel777]

Try a Kill-a-watt. I believe Newegg sells them.

Local hardware stores have them too, at least in the US.

 

[OILFIELDTRASH]

I have a 2600k @ 4.3ghz 1.29 volts and an overvolted and overclocked gtx 480. At the wall I was pulling 400ish watts when running the heaven benchmark. Im sure under extreme load like BF3 Id probably be at around 500 from the wall. So if power supplies are rated at dc then I'm pulling high 300's from my power supply using heaven. Wow. Yeah if all that is correct, someone correct me if I'm wrong, then no way in heck does he need a 1000w ps.

 

[tweakboy]

Wow over 300watts of power on full load on GPU. boy oh boy... thats a lot I didnt know....

You have a nice setup my friend. Why dont you enjoy it a bit before going SLI. Do you really need SLI ? If your gaming @ 1080p want 8xAA 16xAF ultra high details.. it will barely drop to 55fps then shoot back up. You dont need SLI, unless you wanna play on multiple monitors at a high high resolution. thx gl

 

[OILFIELDTRASH]

Wow over 300watts of power on full load on GPU. boy oh boy... thats a lot I didnt know....

You have a nice setup my friend. Why dont you enjoy it a bit before going SLI. Do you really need SLI ? If your gaming @ 1080p want 8xAA 16xAF ultra high details.. it will barely drop to 55fps then shoot back up. You dont need SLI, unless you wanna play on multiple monitors at a high high resolution. thx gl

That's full system. It's not me it's OP that wants to go sli. I'm fine with my 480 til the new Ati comes out