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~~The GTX 670 Overclocking Master-Guide~~ - Page 300

post #2991 of 3357
Quote:
Originally Posted by chiknnwatrmln View Post

If you're running extreme res's then the 2gb VRAM will act as a bottleneck. If you have the 4gb cards then you're all set.

Honestly I wouldn't bother with tri 670's, dual 670's has plenty of power until you get new card(s).

Also, just thought of this. You have a 2700k, which supports 16 lanes of PCI-e 2.0.

Not only will the three cards not scale well, but you'd run into either (depending on how oc'ed your CPU is) CPU or bandwidth bottlenecking.

Good point. The lanes issue is the deal breaker. I'd really have to go 3770k, which at that point may as well be talking all new GPU's too. Think I'm gonna sit tight til I go 6 cores and new GPU's no hurry on that as this rig will easily handle any game out there right now. Higher res monitor makes more sense right now than anything else.
     
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post #2992 of 3357
Quote:
Originally Posted by battleaxe View Post

Good point. The lanes issue is the deal breaker. I'd really have to go 3770k, which at that point may as well be talking all new GPU's too. Think I'm gonna sit tight til I go 6 cores and new GPU's no hurry on that as this rig will easily handle any game out there right now. Higher res monitor makes more sense right now than anything else.
3770k is always a great choice, just make sure that your mobo supports PCI-e Gen 3.

3770k is also only 16 lanes, but at Gen 3 it's twice the speed of Gen 2.

I agree, two oc'ed 670's will outperform any single GPU card. I'm waiting for a 290 right now, and even if it unlocks to a 290x and oc's well at 4800x900 I'm not gonna have 60 FPS in demanding games without lowering settings.
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post #2993 of 3357
Quote:
Originally Posted by chiknnwatrmln View Post

3770k is always a great choice, just make sure that your mobo supports PCI-e Gen 3.

.

It does, I've got a Asus P8Z77 - V Pro, so all good there.

What I have seems good enough though. I see 120-150fps on ultra in bf3, so I shouldn't complain.
     
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post #2994 of 3357
Would a 2500K OC'd to 4.6GHz handle two GTX 670's well?
post #2995 of 3357
Quote:
Originally Posted by kevindd992002 View Post

Would a 2500K OC'd to 4.6GHz handle two GTX 670's well?

From what I can tell I get a very slight bottleneck on my 670SLI rig. My 3dMark11 scores should be just a bit higher than they actually are. I score just over 19k and by my clocks it seems I should be getting just above 20k, so if my math is correct that's about a 5% bottleneck. Not really worth worrying about at all. Seems a 2500k at 4.6 should yield similar results, but it kinda depends on what game. BF3 is not real CPU heavy, so it probably won't matter much on that title. On BF4 that could impact things more and cause more bottleneck. My opinion though having played both on a 2700k is that it won't be a noticeable factor. If you are benching, then yes you will likely notice as its hard to get the score your GPU would otherwise be capable of.

That's my general understanding so far since researching into this.

But I could be wrong, I'm still researching this myself. So maybe someone with more experience could chime in...
Edited by battleaxe - 11/19/13 at 2:18pm
     
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post #2996 of 3357
no kevin, 670 sli is fine at 4.5ghz so youre good. how are prices on the 670 there? here it is less than $250 after rebate thumb.gif

battleaxe, putting a 3rd 670 in your system would be a huge waste of money and power. 2x 670 sli is more than enough to run anything @1080p
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post #2997 of 3357
Quote:
Originally Posted by pc-illiterate View Post

no kevin, 670 sli is fine at 4.5ghz so youre good. how are prices on the 670 there? here it is less than $250 after rebate thumb.gif

battleaxe, putting a 3rd 670 in your system would be a huge waste of money and power. 2x 670 sli is more than enough to run anything @1080p

Thanks man! I'm not so sure of the prices here because I bought my Gigabyte GTX 670's from the USA smile.gif That card isn't even available here. I just bought my 2nd 670 from the marketplace here at $220 and currently am waiting for it to arrive.
post #2998 of 3357
Gigabyte Windforce3 GTX670 OC 2GB
Boost Clock: 1059
Kepler Boost: 65
Max Boost: 1124
Memory Default 1502
Power Target for testing 112%
Testing with Unigine DX11 4.0


Edit:
Had an issue but apparently Unigine 4.0 didn't actually utilise the added MHz provided by the GPU offset as set in Precision X....
I switched to 3.0 and it worked ok....odd
Edited by Gero2013 - 11/20/13 at 2:40pm
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post #2999 of 3357
Hey, has anyone lapped their stock cooler and think it's worth it?

I've remounted one of my coolers with nt-h1 and barely noticed a difference in temps. The Asus cooler has a pretty rough surface so I was thinking of giving it a go.
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post #3000 of 3357
I just got done mounting an h80 water cooler to each of my GTX670's in SLI. The idle temps are ambient room temp. On load the temps never exceed 42c. Most of the time they are around 38 to 39c. The other thing is that on 3dMark 11 my score went up pretty dramatically without touching the overclock.

this normal? I'm pretty excited with the results and can't believe how well this worked out.
     
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