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HD6970 vs GTX570 in terms of OCing

post #1 of 14
Thread Starter 
I heard reference 570s had terrible 4-phase VRMs that severely limit the ability to overvolt. On that note I'm probably going to go for something like a MSI Lightning whether I get the HD 6970 or the GTX570.

On that note which one OCs better? On stock, and then watercooled (Which I am considering)
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post #2 of 14
The cards throw blows at each other one game the 570 is better, one game the 6970 is better so i mean its all weather you want ATI vs NVIDIA on the OC'ing part it depends if you get a good card or a bad card.
post #3 of 14
Get a non reference GTX 570 (ASUS/MSI) and you'll be fine. If you plan on overclocking avoid reference. The same brands on the 6970 would be neat too but the GTX 570 seems to be cheaper so get that.
    
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post #4 of 14
I had the same questions. I chose the lightning simply for the power phases and excellent cooling. Cards a monster size wise and you need two 8 pin pci power cables. Comes O/C'ed and has room to grow. I think the next generation of ATI drivers will really start to show the true power of this card.

Good luck in your choices.
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post #5 of 14
Thread Starter 
Seems like with the latest drivers the 6970 is already a little ways stronger than the 570. But how do they compare when OC'd? It seems some 570s can reach 900 core and 6970s around 950. That said, it doesn't seem like the 6970 OCs as much but which has better performance overall?
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post #6 of 14
Well I have just changed to a 6970 and oc'ed it to 950 easily too. I don't think you would be unhappy with either cards.

I bought a 6970 instead of a GTX 570 because it has 2gb of vram (useful for games like gta4) too compared to the gtx 570's 1.25 GB. I also feel that 2gb gives it a little more futureproofing.
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post #7 of 14
GTX 570 have better performance per clock.
You can see that at 732 MHz on GTX 570 can beat HD 6970 in several games although Radeon HD 6970 clocked at 880 MHz although it depends on the resolution as well.
In Most case :
< 1080p = GTX 570
1080p = Tie
> 1080p = HD 6970

If you consider overclocking with extra volts, Radeon HD 6970 can hit 1000 MHz (120 MHz overclock) but I don't think it'll beat GTX 570 clocked at 900 MHz (163 MHz overclock).
If you only running single monitor, GTX 570 is a better choice. 1.25 GB VRAM doesn't limit you on single monitor. But if you plan to go Multi Monitor Gaming, Radeon HD 6970 is the way to go. Not only because of higher VRAM, single HD 6970 can drive 3-5 monitors itself while GTX 570 cannot.
    
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post #8 of 14
Quote:
Originally Posted by geoxile View Post
On that note which one OCs better? On stock, and then watercooled (Which I am considering)
In that case you want a reference 6970, and you want the revised card which has better vrm control. Either revision has waterblock support so that's a non-issue.

I dunno about the 570, but the lightning has no waterblock support as far as fullcovers are concerned.
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post #9 of 14
Thread Starter 
Quote:
Originally Posted by Bima Sylirian View Post
GTX 570 have better performance per clock.
You can see that at 732 MHz on GTX 570 can beat HD 6970 in several games although Radeon HD 6970 clocked at 880 MHz although it depends on the resolution as well.
In Most case :
< 1080p = GTX 570
1080p = Tie
> 1080p = HD 6970

If you consider overclocking with extra volts, Radeon HD 6970 can hit 1000 MHz (120 MHz overclock) but I don't think it'll beat GTX 570 clocked at 900 MHz (163 MHz overclock).
If you only running single monitor, GTX 570 is a better choice. 1.25 GB VRAM doesn't limit you on single monitor. But if you plan to go Multi Monitor Gaming, Radeon HD 6970 is the way to go. Not only because of higher VRAM, single HD 6970 can drive 3-5 monitors itself while GTX 570 cannot.
Looking at more current reviews like with the 6990 and new non-ref 6970s the 6970 seems to win in most games by a good margin, except a few that just turned out weird like Bad Company 2. It seems like the 6970 offers better performance at stock but has less overhead for OCing. Question is

Some people claim a GTX 570 at 900 is about GTX 580 levels of performance. Can the 6970 compare?
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post #10 of 14
Thread Starter 
Quote:
Originally Posted by tsm106 View Post
In that case you want a reference 6970, and you want the revised card which has better vrm control. Either revision has waterblock support so that's a non-issue.

I dunno about the 570, but the lightning has no waterblock support as far as fullcovers are concerned.
So the 570 will be limited by the 4-phase reference VRM? Is Nvidia planning to revise it?
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