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GTX 470 Overclocking - Page 4

post #31 of 46

I would keep the black part of the stock cooler attached to the PCB.. it contacts the VRM's and exposes the inductors for cooling. And no.. there is no way to unlock shader from core 

 

**Heres a few pics of mine..

 

P1070722.JPG

P1070721.JPG

post #32 of 46
Quote:
Originally Posted by White Fire View Post

Raises the speed of the memory, but you've got a 1000MHz overclock on there, That is WAY too high. Lower it to about 1500MHz and try raising the core.

A lot of 470s have good memory chips, memory OC is drastic on Fermi, as core OC is.

OP, if you can stay @ 800, stay there. It's a good spot to be at. My 470 doesn't like above 800 either. I'll occasionally bench it @ 830 but that's it.

I run my vRam @ 1950 and can bench @ 2000.

If your stuck at 800 core, try and work the memory more. You'll need to do good hi-res gaming to really see if it's stable or not. Furmark and the like don't stress the vRam much.

I don't know why they are telling you to lower your memory clock but if your chips are stable and cool, keep pushing. If your core is at a ceiling of 800, lowering your vRam significantly isn't going to magically remove that ceiling.

What are your temps like? If they're okay and VRM temps are ideal, you can flash the bios for 1.11+v(i wouldn't reccomend more without water), you might squeeze 830 out of the core. I don't think it's worth that negligible difference though for possible degradation
Edited by Dmac73 - 1/29/12 at 3:36pm
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post #33 of 46
Thread Starter 
Quote:
Originally Posted by CL3P20 View Post

I would keep the black part of the stock cooler attached to the PCB.. it contacts the VRM's and exposes the inductors for cooling. And no.. there is no way to unlock shader from core 

**Heres a few pics of mine..

600x450px-LL-11389c53_P1070722.jpeg
600x450px-LL-439bf85f_P1070721.jpeg

I see that the 4 chips are under the blue heatsinks, so instead of covering all the tine black ones, I focus on the 4 grey ones? Then I can mess with the memory clock more I presume?
post #34 of 46

no.. GTX470 have very weak IMC's.. which is why mem clocks will always suck... always.

 

 If you keep inductors cool.. you can run higher core speeds and remain stable, without OCP tripping and causing black screen. To hit +900mhz core though.. you will need low load temps.. like below 50c and boosted voltage. Adding voltage to make heat.. does little to nothing. For best results, remove more heat to take advantage of voltage increases.

post #35 of 46
Quote:
Originally Posted by CL3P20 View Post

no.. GTX470 have very weak IMC's.. which is why mem clocks will always suck... always.

 If you keep inductors cool.. you can run higher core speeds and remain stable, without OCP tripping and causing black screen. To hit +900mhz core though.. you will need low load temps.. like below 50c and boosted voltage. Adding voltage to make heat.. does little to nothing. For best results, remove more heat to take advantage of voltage increases.

Yeah on the large scale, but if his particular memory chips can do more, then why not? I've seen significant performance increases from memory OC alone.
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post #36 of 46

memory IC's on GTX470 mean nothing.

 

 Its the Quality of the internal IMC's on the GPU core that make or break mem OC's for these cards. Consider, quite a few other GPU's have the same memory IC's on them and clock much better.

post #37 of 46
Thread Starter 
So I did some research, and I saw that putting the small heatsinks on the vrm's might not be effective at all, but putting 4 heatsinks on the grey (I believe the ram its called) is much better

hows these? http://www.newegg.com/Product/Product.aspx?Item=N82E16835708008
post #38 of 46
I'm not going to try and argue with whoever is telling you different, but without a doubt you want cooling on the VRMs the 15 black squares I highlighted for you. I'm not going to debate with people that think they know best but just consider or even ask them this: Every high power card worth a damn has heatsinks and active cooling on the VRMs, ask them to show you ANY card that has cooling better than incidental airflow for the chokes or caps or whatever other crap people are telling you to cool... You won't find one.
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post #39 of 46
Thread Starter 
Alright, well I just purchased 2 of the Enzotech MOS-C10 C1100 Forged Copper Heatsinks, going to use them on all of the black & gray squares, hopefully it does what I need it to thumb.gif !
post #40 of 46
Quote:
Originally Posted by juano View Post

I'm not going to try and argue with whoever is telling you different, but without a doubt you want cooling on the VRMs the 15 black squares I highlighted for you. I'm not going to debate with people that think they know best but just consider or even ask them this: Every high power card worth a damn has heatsinks and active cooling on the VRMs, ask them to show you ANY card that has cooling better than incidental airflow for the chokes or caps or whatever other crap people are telling you to cool... You won't find one.


 

nobody is questioning the fact that mosfets produce heat and need to be cooled.... that much is painfully obvious. 

 

**Cooling inductors on the other hand is useful for pushing for higher clocks and keeping OCP away. wink.gif

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