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Do memory clocks have a limit?

post #1 of 14
Thread Starter 
I always reach a well when oc'ing the core of a gpu, but it seems like there's no limit to the mem clock. On my gtx 560 ti i had it at 950/1900/2400 and having the mem clock so high didn't seem to phase it. Is this dangeorus?
post #2 of 14
I guess if your temps are fine and your not getting any artifacts then yea, it's ok!
    
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post #3 of 14
it shouldn't be dangerous unless the temps are too high.
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post #4 of 14
Thread Starter 
Could it be GPU/company specific? I was told my specific gtx 560 ti, the palit version doesn't have proper cooling on it's vrms so i shouldn't go too high on mem clock even if it is stable.
post #5 of 14
The Palit 560s don't have cooling on the memory, so... maybe.

AFAIK there's no way to monitor VRAM temps so if they do overheat, you probably won't know until there's a problem. Then again TF2 cards don't have memory cooling either and I haven't heard about people burning up their VRAM. IMO you'll probably be fine.
post #6 of 14
It all depends on the GPU and cooling design, Palit 560s don't have cooling on the memory but, everything should be fine. I haven't heard of anyone blowing their vrms on 560s.
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post #7 of 14
Overclocking vram too high might actually decrease performance as the card will automatically scale down the clocks anyway (or something to that effect, I don't quite remember the details) if they are too high. Test performance in a 3d benchmark each time you increase the clocks to make sure you are actually getting a performance gain.
Edited by aldfig0 - 6/18/11 at 8:21pm
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post #8 of 14
Quote:
Originally Posted by Booty Warrior View Post
The Palit 560s don't have cooling on the memory, so... maybe.

AFAIK there's no way to monitor VRAM temps so if they do overheat, you probably won't know until there's a problem. Then again TF2 cards don't have memory cooling either and I haven't heard about people burning up their VRAM. IMO you'll probably be fine.
He was talking about VRMs not VRAM.
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post #9 of 14
Quote:
Originally Posted by xFyre View Post
He was talking about VRMs not VRAM.
I was responding to the OP, which is all about VRAM...

Palit's heatsink doesn't directly cool the VRMs either though.
post #10 of 14
There was a report of someone with a GTX 570 destroying his card by clocking the memory to 2300 and running it for like a month.

Also overclocking the memory shows little to no in game/FPS increase and to be honest it's not worth it for anything over say 100-200MHz over stock. I personally have yet to see much of a difference between stock memory on my 580 and +100MHz. And if it were anything like core clock increases the performance increase would show with intervals of as little as 25MHz.

Do as you please though. I'm just trying to save your card.

Just as the 570 owner said. There were no indications of a bad memory OC until one day it went from 0 artifacts to a whole ton and from then on he couldn't even run artifact free at stock clocks.
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