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NVIDIA GTX 750Ti / 750 (Maxwell) Owner's club - Page 24

post #231 of 3171
Quote:
Originally Posted by jason387 View Post

Does TIM on the memory chips actually help the memory overclock further.

It does on my Asus card. Don't know what will happen on your Zotac.
I would only do it if your Zotac has very poor memory cooling and if you don't care about warranty.
If the heatsink is currently warmer than the vram, then vram may be warmed which is bad.
I was lucky. Apparently, my vram runs hotter than the heatsink. Therefore, heatsink cools vram.
I am running 7 hours stable already in cudaminer at +400 mem. Previously, +400 mem would crash in 1-10 minutes.
I am confident that my vram is being cooled by my heatsink.
Quote:
Originally Posted by jason387 View Post

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

Will the TIM burn out anything?

That site states "Electrically Non-Conductive" but don't blame me if something bad happens.
Edited by Partol - 3/17/14 at 11:35am
     
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post #232 of 3171
Quote:
Originally Posted by Partol View Post

It does on my Asus card. Don't know what will happen on your Zotac.
I would only do it if your Zotac has very poor memory cooling and if you don't care about warranty.
If the heatsink is currently warmer than the vram, then vram may be warmed which is bad.
I was lucky. Apparently, my vram runs hotter than the heatsink. Therefore, heatsink cools vram.
I am running 7 hours stable already in cudaminer at +400 mem. Previously, +400 mem would crash in 1-10 minutes.
I am confident that my vram is being cooled by my heatsink.
That site states "Electrically Non-Conductive" but don't blame me if something bad happens.

Mine runs at 1600Mhz(Memory), yours is now running at?
Jay
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post #233 of 3171
Quote:
Originally Posted by jason387 View Post

Mine runs at 1600Mhz(Memory), yours is now running at?

On my Asus, +400 mem = 1550Mhz
     
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post #234 of 3171
Quote:
Originally Posted by Partol View Post

On my Asus, +400 mem = 1550Mhz

Oh. I've tried 17000Mhz for benching.
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post #235 of 3171
Quote:
Originally Posted by jason387 View Post

Why not just lower the fan speed?

You can't.
It was bios locked at 43% minimum.

Evga released a new bios that reports as 42% minimum , they say with it it's actually running lower than a 1% drop would indicate because it's volt depenent, it's not a PWM fan.

Hexus tested this and found a whopping one decibel drop in the noise level over the old bios.

There are no reports I've seen of people trying to mess with the bios themselves having any joy,

Some people have been discussing modding it with a resistor on the power supply, but the fan type used is expected to stop dead instead, and I'm not prepared to void warranty like that anyway, so it's already gone back to the supplier.

It's a sad but massive failure on EVGA's part on what would have otherwise been an excellent card.

The MSI and palit cards use PWM, but no displayport :/

Hoping some new competing models come out soon.
Edited by Yakumo - 3/17/14 at 1:10pm
post #236 of 3171
Quote:
Originally Posted by Quilem View Post

Could you share that bios?
Hey i am all for sharing BUT use it wisely ok? guys looking for less power please don't use
for evga FTW 750ti
and if someone can improve it please do...also REMEMBER this card boosts at 1450 stock right now ok? so it may just crash in 3d for most wink.gif maybe best to lower clocks -30 before you try for first time

http://www29.zippyshare.com/v/22617439/file.html
Edited by cowie - 3/17/14 at 2:43pm
post #237 of 3171
Quote:
Originally Posted by Yakumo View Post

You can't.
It was bios locked at 43% minimum.

Evga released a new bios that reports as 42% minimum , they say with it it's actually running lower than a 1% drop would indicate because it's volt depenent, it's not a PWM fan.

Hexus tested this and found a whopping one decibel drop in the noise level over the old bios.

There are no reports I've seen of people trying to mess with the bios themselves having any joy,

Some people have been discussing modding it with a resistor on the power supply, but the fan type used is expected to stop dead instead, and I'm not prepared to void warranty like that anyway, so it's already gone back to the supplier.

It's a sad but massive failure on EVGA's part on what would have otherwise been an excellent card.

The MSI and palit cards use PWM, but no displayport :/

Hoping some new competing models come out soon.

Use Kepler Bios Tweaker to change the minimum speed. Its been done.
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post #238 of 3171
Quote:
Originally Posted by jason387 View Post

Use Kepler Bios Tweaker to change the minimum speed. Its been done.
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.

Yes it was the evga 750ti FTW with the double fan ACX Cooler.

Like I said, it was noticeably louder than an Asus GTX 460 that ran a lot hotter, I couldn't see myself sitting there working without getting a headache.
That was not acceptable having paid a £40 premium for that card due to claims of it being "silent", and also buying a new £100 fanless PSU to try move to wards a silent system (still hasn't been delivered, but obviously the card would have been a pain over that)
Quote:
Originally Posted by jason387 View Post

Use Kepler Bios Tweaker to change the minimum speed. Its been done.

I've seen lots of threads where people suggest to try that, and not one post so far confirming that it worked. The lack of that, and the threads discussing putting a resistor on the power line (and expecting it might fail due to the type of fan used) also led me to think that it was not going to be possible.

If I can find something compelling then I may re-order the card, but till then, hoping someone releases something better with a displayport, passive cooling maybe but I can't have anything 3 slot as the 2 slot card obliterates one of my small pci-e slots, and the other one only just lets me get my X-Fi plugged in.
post #239 of 3171
After some cooling improvements, now able to run memory stable at +600 (1650MHz) in cudaminer.

Installed an old Thermalright HR-11 backside cooler and 92mm fan and some thermal pad.



HR-11 + 92mm fan = 3C gpu temp decrease.
thermal pad = 1C gpu temp decrease.
220mm side fan = 1-2C gpu temp decrease

Can not overclock memory much higher than +600 because windows starts to become unstable.
Probably need more memory voltage to reach higher memory overclock.
Even with all these mods, my Asus gpu still runs hotter than my MSI gpu. Asus 58C and MSI 50C
Will be adding TIM to the memory on my MSI card too.
     
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post #240 of 3171
Thats looks crazy thumb.gif and 1650Mhz GPU is crazy smile.gif

Do you know what the current voltage setting on your card for memory is? I couldnt figure out which of the voltages controls memory voltage.
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