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GTX 570 SLI (EVGA & NV Reference) + Antec EA650 PSU - Testing...

post #1 of 15
Thread Starter 
So i evaluated an NVIDIA reference GTX 570 as well as an EVGA 570 SC; compared them with a GTX 580 in a relatively simple, 6 game/3 synthetic benchmark performance review... I get done with it and publish it; and then I took one of the 570s out an plug the 580 back in.

... And I'm sitting there looking at these two nice GPUs. Then I look at my PSU. Antec Earthwatts 650 (EA650). Now, I know that's a darn good PSU; I've had it for a while and it's powered everything from an A8V Deluxe 939 rig to a litany of AM2+/AM3 setups. I've kept it clean and dust-free on the inside, and I inspect the caps every few months. The lines/rails are pretty good on it, but not as steady as today's $100-$150 PSUs. In other words, it's likely a good PSU for something like a single HD 5830/5850/5870 or GTX 470/480/570/580... On the SLI side it would seem it could put up with maybe dual GTX 465s.

I thought "heck, I'll try these two 570s... they're supposed to be more power efficient; maybe this PSU can handle them". So I plug them in and look at the first SLI setup I've ever seen in person (though I've been a staffer/reviewer since 2003; I don't know anyone in my area that's a PC gamer; maybe I should drive up to Rochester once in a while and hang out at FrozenCPU).

Before I plugged them in, however, I de-overclocked. I figured there would be no way these cards would run in this rig with the x6 overclocked to 3.96ghz @ ~1.47 vcore.

... Smooth startup, good idle temps (42)... so I figured it's time to benchmark a bit and compare my single card results (albeit with CPU @ 3.96) with some SLI figures.


AVP Benchmark went fine:

Single card (with CPU @ 3.96 ghz):




SLI with x6 @ stock 2.8 with turbo mode on:

Resolution: 1920 x 1080
Texture Quality: 3
Shadow Quality: 3
Anisotropic Filtering: 16
SSAO: ON
Vertical Sync: OFF
DX11 Tessellation: ON
DX11 Advanced Shadows: ON
DX11 MSAA Samples: 4


Benchmark Summary:

Number of frames: 7816
Average Frame Time: 13.4ms
Average FPS: 74.5



hm, ok, it works. So then I tried Stone Giant:


Single card (with CPU @ 3.96):




SLI (CPU @ 2.8):

Min: 85
Avg: 136.0
Max: 176


... 90% scaling; nice...



So I was convinced at that point to play a game for an extended period of time. I think amongst all of my games (not really that many), Bad Company 2 seems to be the best all-around system-stresser.

So I played for 2 hours on the new Harvest map... full server, 19x10, all settings highest, HBAO on, and played with all the AA modes. It ran great; no issues all the way through.



It's reasonable to say that I have two GTX 570s running @ EVGA SC speeds, in SLI mode using my x6 system with a good (now I'd call it great) 650W PSU.


I wish I had a Kill-a-Watt. Come next review I'll have one though; I've waited too long to get one.

I'm willing to bet that I'm right at the threshold. Well, I think I'll enjoy this for a while... and then I'll get a better PSU as insurance.
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post #2 of 15
you sure do know how to create some tension, i was reggie for "and then the system started smoking". that's great though, +rep as I'm sure there are many who need this kinda info.
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post #3 of 15
Hi Ragejg,
Nice scores, i was going to wait for those to come out but gave in and bought 2 x MSI GTX460's Cyclone 768Mb instead.

I'm suprised the scores are not higher for you, maybe cards not getting enough power ?
I managed to score 81 FPS with AVP Benchmark @ max settings with an overclock of 850/1700/2100.

Have a look here >>> http://forums.ebuyer.com/showthread....n-thread/page3 Bottom of the page, i posted some results & screenies for my SLi'd setup to compare against.

I already want to upgrade lol got the xmas bug again.

Nice purchase m8
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post #4 of 15
Good info that's for sure, here's an SLI Review for comparison purposes
http://www.guru3d.com/article/geforc...y-sli-review/1

They definitely recommend a Kilowatt PSU, I was waiting for the.... "and then my PSU blew up, both my cards died"

Looks like if you leave the cards and CPU at stock, you'll be fine.

you really are pushing it though
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post #5 of 15
Thread Starter 
Quote:
Originally Posted by ewan View Post
Hi Ragejg,
Nice scores, i was going to wait for those to come out but gave in and bought 2 x MSI GTX460's Cyclone 768Mb instead.

I'm suprised the scores are not higher for you, maybe cards not getting enough power ?
I managed to score 81 FPS with AVP Benchmark @ max settings with an overclock of 850/1700/2100.

Have a look here >>> http://forums.ebuyer.com/showthread....n-thread/page3 Bottom of the page, i posted some results & screenies for my SLi'd setup to compare against.

I already want to upgrade lol got the xmas bug again.

Nice purchase m8
My results with those settings line right up wit NVIDIA's reference results (which use an i7 @ 3.2) .... I'm thinking there's a setting or two that are different from mine; I used a custom config file with enhanced IQ.
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King Crimson
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post #6 of 15
Quote:
Originally Posted by 2010rig View Post
Good info that's for sure, here's an SLI Review for comparison purposes
http://www.guru3d.com/article/geforc...y-sli-review/1

They definitely recommend a Kilowatt PSU, I was waiting for the.... "and then my PSU blew up, both my cards died"

Looks like if you leave the cards and CPU at stock, you'll be fine.

you really are pushing it though
Where do they recommend a kilowatt PSU? 3 480s reach 1000W, also it isn't specific whether it is from the wall (then you would need to apply a factor or .8 to .9).

Two cards seems to take about 550W and three about 800W.
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post #7 of 15
Quote:
Originally Posted by ragejg View Post
So i evaluated an NVIDIA reference GTX 570 as well as an EVGA 570 SC; compared them with a GTX 580 in a relatively simple, 6 game/3 synthetic benchmark performance review... I get done with it and publish it; and then I took one of the 570s out an plug the 580 back in.

... And I'm sitting there looking at these two nice GPUs. Then I look at my PSU. Antec Earthwatts 650 (EA650). Now, I know that's a darn good PSU; I've had it for a while and it's powered everything from an A8V Deluxe 939 rig to a litany of AM2+/AM3 setups. I've kept it clean and dust-free on the inside, and I inspect the caps every few months. The lines/rails are pretty good on it, but not as steady as today's $100-$150 PSUs. In other words, it's likely a good PSU for something like a single HD 5830/5850/5870 or GTX 470/480/570/580... On the SLI side it would seem it could put up with maybe dual GTX 465s.

I thought "heck, I'll try these two 570s... they're supposed to be more power efficient; maybe this PSU can handle them". So I plug them in and look at the first SLI setup I've ever seen in person (though I've been a staffer/reviewer since 2003; I don't know anyone in my area that's a PC gamer; maybe I should drive up to Rochester once in a while and hang out at FrozenCPU).

Before I plugged them in, however, I de-overclocked. I figured there would be no way these cards would run in this rig with the x6 overclocked to 3.96ghz @ ~1.47 vcore.

... Smooth startup, good idle temps (42)... so I figured it's time to benchmark a bit and compare my single card results (albeit with CPU @ 3.96) with some SLI figures.


AVP Benchmark went fine:

Single card (with CPU @ 3.96 ghz):




SLI with x6 @ stock 2.8 with turbo mode on:

Resolution: 1920 x 1080
Texture Quality: 3
Shadow Quality: 3
Anisotropic Filtering: 16
SSAO: ON
Vertical Sync: OFF
DX11 Tessellation: ON
DX11 Advanced Shadows: ON
DX11 MSAA Samples: 4


Benchmark Summary:

Number of frames: 7816
Average Frame Time: 13.4ms
Average FPS: 74.5



hm, ok, it works. So then I tried Stone Giant:


Single card (with CPU @ 3.96):




SLI (CPU @ 2.8):

Min: 85
Avg: 136.0
Max: 176


... 90% scaling; nice...



So I was convinced at that point to play a game for an extended period of time. I think amongst all of my games (not really that many), Bad Company 2 seems to be the best all-around system-stresser.

So I played for 2 hours on the new Harvest map... full server, 19x10, all settings highest, HBAO on, and played with all the AA modes. It ran great; no issues all the way through.



It's reasonable to say that I have two GTX 570s running @ EVGA SC speeds, in SLI mode using my x6 system with a good (now I'd call it great) 650W PSU.


I wish I had a Kill-a-Watt. Come next review I'll have one though; I've waited too long to get one.

I'm willing to bet that I'm right at the threshold. Well, I think I'll enjoy this for a while... and then I'll get a better PSU as insurance.
hi ragejg i just bought gtx470 but i have the psu antec ea650w, u think the psu can hadle this card flawlessly? thanks
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post #8 of 15
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post #9 of 15
Thread Starter 
Quote:
Originally Posted by teichu View Post
hi ragejg i just bought gtx470 but i have the psu antec ea650w, u think the psu can hadle this card flawlessly? thanks
For sure. I've tortured mine with long term tests of:

2 modestly/highly overclocked Socket 939 motherboards
2 modestly/highly overclocked AM2+ motherboards
1 modestly/highly overclocked AM3 motherboard

GPUs:

2 AGP HD 3850s (very power hungry IIRC)
HD 4850
HD 4870
HD 5830
GTX 460 768 mb
GTX 465
GTX 570 reference
GTX 570 EVGA SC @ 1.125v
GTX 580 reference @ 1.138v

Obviously if you have a good EA650 (which I'd suppose 99% are) it can handle a pretty good range of power profiles.

So yeah, GTX 470 = sure thing IMO.
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King Crimson
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post #10 of 15
hi but i have i7 920 and one 500gb hdd and one 80gb ssd , and also 6gb corsair 1600mhz , so my antec ea650 will be handle it? if i put gtx470 thanks
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