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NVIDIA GTX 750Ti / 750 (Maxwell) Owner's club - Page 23

post #221 of 3171
I had my GB at 1380 with just soft OC. but I hate relying on those. will try a bios mod if I can get this USB to boot )
post #222 of 3171
Argggg, so annoyed, turns out only the EVGA card I have sat here has a displayport and hence can be used for g-sync which I'd planned toget a compatible monitor for later frown.gif

But it's air flow makes sooo much noise withthe fans at 43% constant.

Sticking with the RMA and hoping there's a decent card released soon frown.gif
post #223 of 3171
Quote:
Originally Posted by Yakumo View Post

Argggg, so annoyed, turns out only the EVGA card I have sat here has a displayport and hence can be used for g-sync which I'd planned toget a compatible monitor for later frown.gif

But it's air flow makes sooo much noise withthe fans at 43% constant.

Sticking with the RMA and hoping there's a decent card released soon frown.gif
Why not just lower the fan speed?
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post #224 of 3171
Quote:
Originally Posted by Yakumo View Post

Argggg, so annoyed, turns out only the EVGA card I have sat here has a displayport and hence can be used for g-sync which I'd planned toget a compatible monitor for later frown.gif

But it's air flow makes sooo much noise withthe fans at 43% constant.

Sticking with the RMA and hoping there's a decent card released soon frown.gif

You have the FTW model right? I have this one EVGA Part Number: 02G-P4-3753-KR, it has g-sync and display port, but it does not have a separate 6-pin power connector. Compared to my old Palit 460 when it was wound up, its like its not even there. Running at 99% utilization in BOINC I have not seen the fan over 49% or the temp over 58C, you can hear it if you listen but hardly annoying unless you are expecting absolute silence.
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post #225 of 3171
Quote:
Originally Posted by bfromcolo View Post

You have the FTW model right? I have this one EVGA Part Number: 02G-P4-3753-KR, it has g-sync and display port, but it does not have a separate 6-pin power connector. Compared to my old Palit 460 when it was wound up, its like its not even there. Running at 99% utilization in BOINC I have not seen the fan over 49% or the temp over 58C, you can hear it if you listen but hardly annoying unless you are expecting absolute silence.

I have the SC version, too, and I find it way too noisy compared to my old GTX660 TFIII. It's locked at min. 40% fan speed, which is enough to keep it under 60 degrees under load. Sounds like the fan's spinning somewhere around 1500-2000rpm so... Want silent operation? Avoid EVGA.
Other than that, it's a pretty great card.
   
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post #226 of 3171
Quote:
Originally Posted by Smanci View Post

I have the SC version, too, and I find it way too noisy compared to my old GTX660 TFIII. It's locked at min. 40% fan speed, which sounds like the fan's spinning somewhere around 1500-2000rpm. Want silent operation? Avoid EVGA.
Other than that, it's a pretty great card.
Edit the bios to lower the minimum fan speed.
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post #227 of 3171
Quote:
Originally Posted by jason387 View Post

Edit the bios to lower the minimum fan speed.

No.
   
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post #228 of 3171
Quote:
Originally Posted by cowie View Post

I messed around more with my bios today now 1.265v and i can bench 1490+ on the stock freaking cooler lol:D


This thing is alot of fun thumb.gif


Could you share that bios?
post #229 of 3171
Today, I proved that poor memory overclocking on the dual-fan Asus is because of overheating memory.

On the dual-fan Asus card, the vram chips are very close to the gpu heatsink. By my estimation, only 1-2 mm separation.
Asus put black tape on the heatsink. Not sure why. possibly to avoid electrical short, or perhaps to thermally insulate heatsink from vram. Whatever the reason for the tape is ..... the memory cooling on the Asus dual fan card is very poor.

At stock, my asus card can only do +200-250 memory OC in cudaminer, depending on ambient temperature.

Attempting to fix this, I twice applied TIM to the vram.
First time, I only applied a little TIM. result was +380 memory stable in cudaminer. +400 not stable.
Second time, I applied much more TIM. see photo.



After the second TIM application .... +400 mem is now stable in cudaminer. Have not tested higher.
There is a consequence. My gpu temperature increased by 3C, partly due to higher performance in cudaminer, but perhaps also due to added memory heat.

Before attempting further memory overclocking, I will be switching the case to my other PC which has a large side fan and more interior space. Since the vram is now thermally connected to the gpu heatsink, the main focus now is to decrease gpu and heatsink temperature, in order to cool the vram even more.

For gaming, a high memory overclock may not be needed. But, for cudaminer, a high memory overclock gives a measurable performance boost.

TIM is Arctic MX-4. no electrical conductivity.
     
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post #230 of 3171
Quote:
Originally Posted by Partol View Post

Today, I proved that poor memory overclocking on the dual-fan Asus is because of overheating memory.

On the dual-fan Asus card, the vram chips are very close to the gpu heatsink. By my estimation, only 1-2 mm separation.
Asus put black tape on the heatsink. Not sure why. possibly to avoid electrical short, or perhaps to thermally insulate heatsink from vram. Whatever the reason for the tape is ..... the memory cooling on the Asus dual fan card is very poor.

At stock, my asus card can only do +200-250 memory OC in cudaminer, depending on ambient temperature.

Attempting to fix this, I twice applied TIM to the vram.
First time, I only applied a little TIM. result was +380 memory stable in cudaminer. +400 not stable.
Second time, I applied much more TIM. see photo.



After the second TIM application .... +400 mem is now stable in cudaminer. Have not tested higher.
There is a consequence. My gpu temperature increased by 3C, partly due to higher performance in cudaminer, but perhaps also due to added memory heat.

Before attempting further memory overclocking, I will be switching the case to my other PC which has a large side fan and more interior space. Since the vram is now thermally connected to the gpu heatsink, the main focus now is to decrease gpu and heatsink temperature, in order to cool the vram even more.

For gaming, a high memory overclock may not be needed. But, for cudaminer, a high memory overclock gives a measurable performance boost.

TIM is Arctic MX-4. no electrical conductivity.

Does TIM on the memory chips actually help the memory overclock further. Even my heatsink is quite close to the vram chips. This is my gpu- https://www.zotacusa.com/geforce-gtx-650-ti-zt-61101-10m.html

This is my TIM- http://www.coolermaster.com/cooling/thermal-compound/ic-value-v1/

Will the TIM burn out anything?
Jay
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Jay
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