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[OFFICIAL] GTX 670 Overclocking - Page 93

post #921 of 1562
Quote:
Originally Posted by Bosniac View Post

High vram can hurt you. Check 3DMark under detailed benchmarks for framerates, especially your CPU and combined score. I lost 10fps at one time going to 600 instead of staying at +450.
I don't have 3D Mark installed, but i did test the effect of higher Vram in Unigine:

Ive got two data sets which seem to indicate the higher Vram is operating efficiently and helping to achieve a higher fps/score in Unigine with all settings maxed at 1920x1080.

With the boost core fixed at 1290 MHz i got the following results
Vram @ 6998 MHz = Fps 50.4 & Score 1269
Vram @ 7204 MHz = Fps 51.3 & Score 1292

With the boost core fixed at 1316 MHz i got the following results
Vram @ 7204 MHz = Fps 51.9 & Score 1307
Vram @ 7406 MHz = Fps 52.6 & Score 1326

You think the results will be higher if i scale the Vram back to +450 (around 6600 MHz effective)? If so, i will test tonight when i get home.
Edited by DrBoss - 7/12/12 at 7:55am
post #922 of 1562
Quote:
Originally Posted by IronDoq View Post

:O while that certainly makes me feel better about mine I must say I am sorry you got such a chip. So I managed to get a max OC of 1185Mhz on the Core and 3702 (+700) on the memory. The Gigabyte card is extremely quiet and cool, and although mine doesn't have the highest ever clock speed it does what I need it to do.thumb.gif

but think about it: at least the clocks aren't the reference clocks tongue.gif
post #923 of 1562
Quote:
Originally Posted by IronDoq View Post

I'll give afterburner a go, just passed +300 on the memory and I'm working it up.
EDIT: Still stuck at max 1185Mhz on the core, but managed to get +700 on the memory without problems. Quickly looking through this thread, that seems high. It is high? tongue.gif

That's a rather low max core clock, yeah, but +700MHz extra on vram is awesome. Also, KB is always a multiple of 13 so it's actually probably 39 (or possibly 52), not 41. Not a big deal, just pointing it out smile.gif

Contrary to what someone else mentioned above, there's really no downside to cranking your memory as high as it'll go as long as it's stable. You should check though to make sure you aren't pushing it to a point where your FPS actually goes down, which can happen due to error correction kicking in and keeping the card running w/o it actually 'working 100% right' ... iow there's often a very narrow range of memory clock at the very top end of stability (a 'band' that's about 10-20MHz wide) where you get error correction/lower FPS instead of actual crashing. Usually it's accompanied by subtle artifacts but it doesn't have to be, so ... you can discover this phenomenon through benching. Heaven and 3dMark11 work pretty good for it.
Edited by brettjv - 7/12/12 at 7:45am
    
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post #924 of 1562
Quote:
Originally Posted by brettjv View Post

That's a rather low max core clock, yeah, but +700MHz extra on vram is awesome. Also, KB is always a multiple of 13 so it's actually 39, not 41. Not a big deal, just pointing it out smile.gif
Contrary to what someone else mentioned above, there's really no downside to cranking your memory as high as it'll go as long as it's stable. You should check though to make sure you aren't pushing it to a point where your FPS actually goes down, which can happen due to error correction kicking in and keeping the card running w/o it actually 'working 100% right' ... iow there's often a very narrow range of memory clock at the very top end of stability (a 'band' that's about 10-20MHz wide) where you get error correction/lower FPS instead of actual crashing. Usually it's accompanied by subtle artifacts but it doesn't have to be, so ... you can discover this phenomenon through benching. Heaven and 3dMark11 work pretty good for it.

His max core clock's about the same as mine too. I guess I got a pretty crap card frown.gif. I wish I could at least touch 1200 MHz.
post #925 of 1562
Quote:
Originally Posted by brettjv View Post

That's a rather low max core clock, yeah, but +700MHz extra on vram is awesome. Also, KB is always a multiple of 13 so it's actually probably 39 (or possibly 52), not 41. Not a big deal, just pointing it out smile.gif
Contrary to what someone else mentioned above, there's really no downside to cranking your memory as high as it'll go as long as it's stable. You should check though to make sure you aren't pushing it to a point where your FPS actually goes down, which can happen due to error correction kicking in and keeping the card running w/o it actually 'working 100% right' ... iow there's often a very narrow range of memory clock at the very top end of stability (a 'band' that's about 10-20MHz wide) where you get error correction/lower FPS instead of actual crashing. Usually it's accompanied by subtle artifacts but it doesn't have to be, so ... you can discover this phenomenon through benching. Heaven and 3dMark11 work pretty good for it.

As I ran the tests in Unigen I saved the scores with something like 00-500, 00-600, and so on, and I noticed that the scores did in fact increase each time the vram clock was increased. I actually haven't tried +800 as +700 wasn't showing any stability issues, but it was late last night and I wanted to go to bed. Maybe I just have a super vram card as opposed to core haha.
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post #926 of 1562
Quote:
Originally Posted by IronDoq View Post

As I ran the tests in Unigen I saved the scores with something like 00-500, 00-600, and so on, and I noticed that the scores did in fact increase each time the vram clock was increased. I actually haven't tried +800 as +700 wasn't showing any stability issues, but it was late last night and I wanted to go to bed. Maybe I just have a super vram card as opposed to core haha.

you may get better scores if you incorporate the high vram clock with the sub 1200MHz core clock but it is a shame that you can't get it over 1200 but it's a lottery when it comes to these things and i guess i got luck to where i got a card that'll do 1215.
post #927 of 1562
Sooooooo I've actually been trying to disable vsync in BF3 in order to see how my FPS fluctuates. I have disabled it in-game, in the Global Settings of the Nvidea Control Panel I've set it to application controlled, although I've also just tried setting it to off. In Precision X there is no frame rate target, and I have unchecked the SYNC box. I am using fraps which, when I do record, is set to record at 60fps. Throughout this whole escapade I haven't recorded at all, so I don't think it's that. No matter what I try, the FPS in BF3 stays at 60FPS. Now I don't exactly have a problem with this, the card is awesome, but I want it disabled!! Any tips on disabling Vsync?
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post #928 of 1562
OK, my 670 has decided not to downclock to a 2D clock of 680MHz but is stuck at 980MHz....it's original base clock.
post #929 of 1562
Quote:
Originally Posted by thegh0sts View Post

OK, my 670 has decided not to downclock to a 2D clock of 680MHz but is stuck at 980MHz....it's original base clock.

So you're saying you can't overclock it at all?
post #930 of 1562
Quote:
Originally Posted by Admiral Mudkipz View Post

So you're saying you can't overclock it at all?

No, I think he means his cards original base clock is the 2D clock that it is using.
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