7900GT Overclocking and Cooling

RichBa5tard · 13th June 2006, 09:05

How high can you get your GT? Mine purs fine in a HTPC case (silent/passive cooling) at 540 / 900. : )

Combined with a Amd Turion 1.6Ghz it makes a great choice for a gaming HTPC.

jmke · 13th June 2006, 09:24

don't know by heart, you'll find out in the review

jmke · 13th June 2006, 11:50

did you see this: http://www.evga.com/community/messag...TOPIC_ID=14558

apparantly the voltage regulators on the 7900GT can overheat quickly (80°C+) and cause problems

RichBa5tard · 14th June 2006, 09:40

Don't get me worried. : )

I've got a zalman VF700 which blows a bit of air on the pcb, in contrary to the default (noisy) cooler. Hope that helps.

jmke · 14th June 2006, 10:00

it's on the REAR side of the card... your VF700 doesn't help one bit and what's more; that VF700 might actually perform WORSE than stock cooling as that product is meant for MIDRANGE video cards, VF900 is for high end

jmke · 14th June 2006, 10:22

memory on Club3D I got up to 900Mhz (660mhz default) and core up to 570mhz (450Mhz default); not bad at all, better than Sparkle 7900GT which I got to 550Mhz on Core and ~820 on memory. but end result in games/benchies between those two overclocks is not very big

got eVGA now in for testing, stock clocks 580Mhz(!) on core and 700+ on memory

RichBa5tard · 14th June 2006, 13:38

Quote:

Originally posted by jmke
it's on the REAR side of the card... your VF700 doesn't help one bit and what's more; that VF700 might actually perform WORSE than stock cooling as that product is meant for MIDRANGE video cards, VF900 is for high end

VF700 is suited for 7900GT according to zalman.

I believe them as it keeps the gpu core cooler than the stock fan.

jmke · 14th June 2006, 13:39

what brand do you have? on 7800GT the VF700 performed worse in a low airflow case

split of this discussion to seperate thread

the cooling of the Sparkle 7900GT Caliber kicks serious ***, silent and high performance, also covers the memory chips;

RichBa5tard · 14th June 2006, 13:54

XXX 7900GT Extreme Edition or sth, 520 / 750 stock.

It used the noisy reference cooler, i didn't know there were already brands out there that used a custom cooler.

I know the VF700 is suitable for seriously overclocking a 7900GT, but with the fan running at 5V, it keeps the temperature of the core a little bit lower than the stock cooler... so you can can't call it 'unsuitable'.

PS: i have a very low airflow aircase, no intakes, 2*80mm at 5V out.

jmke · 14th June 2006, 14:19

cooler on Sparkle Caliber

even at 25% fan speed core remains chilly and it's at least as loud/noiseless as VF700@5v

compared to that XFX cooler, it's a monster

http://www.overclock3d.net/reviews.p...3&id=53&page=3

13th June 2006, 09:05	#1
RichBa5tard [M] Reviewer/HWBot ***** Join Date: May 2002 Posts: 3,344	How high can you get your GT? Mine purs fine in a HTPC case (silent/passive cooling) at 540 / 900. : ) Combined with a Amd Turion 1.6Ghz it makes a great choice for a gaming HTPC. __________________ HTPC (mac osx): Mac Mini \| Core Duo 1.6Ghz \| 2GB DDR2 \| 26\" TFT Development (mac osx): Macbook \| Core 2 2.0Ghz \| 4GB DDR2 \| 250GB HD Games (win xp): E2160 @ 2.4Ghz \| HD3850 OC \| Asrock 4coredual-vsta \| 2GB DDR2

13th June 2006, 09:24	#2
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	don't know by heart, you'll find out in the review __________________

13th June 2006, 11:50	#3
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	did you see this: http://www.evga.com/community/messag...TOPIC_ID=14558 apparantly the voltage regulators on the 7900GT can overheat quickly (80°C+) and cause problems __________________

14th June 2006, 09:40	#4
RichBa5tard [M] Reviewer/HWBot ***** Join Date: May 2002 Posts: 3,344	Don't get me worried. : ) I've got a zalman VF700 which blows a bit of air on the pcb, in contrary to the default (noisy) cooler. Hope that helps. __________________ HTPC (mac osx): Mac Mini \| Core Duo 1.6Ghz \| 2GB DDR2 \| 26\" TFT Development (mac osx): Macbook \| Core 2 2.0Ghz \| 4GB DDR2 \| 250GB HD Games (win xp): E2160 @ 2.4Ghz \| HD3850 OC \| Asrock 4coredual-vsta \| 2GB DDR2

14th June 2006, 10:00	#5
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	it's on the REAR side of the card... your VF700 doesn't help one bit and what's more; that VF700 might actually perform WORSE than stock cooling as that product is meant for MIDRANGE video cards, VF900 is for high end __________________

14th June 2006, 10:22	#6
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	memory on Club3D I got up to 900Mhz (660mhz default) and core up to 570mhz (450Mhz default); not bad at all, better than Sparkle 7900GT which I got to 550Mhz on Core and ~820 on memory. but end result in games/benchies between those two overclocks is not very big got eVGA now in for testing, stock clocks 580Mhz(!) on core and 700+ on memory __________________

14th June 2006, 13:39	#8
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	what brand do you have? on 7800GT the VF700 performed worse in a low airflow case split of this discussion to seperate thread the cooling of the Sparkle 7900GT Caliber kicks serious ***, silent and high performance, also covers the memory chips; __________________

14th June 2006, 13:54	#9
RichBa5tard [M] Reviewer/HWBot ***** Join Date: May 2002 Posts: 3,344	XXX 7900GT Extreme Edition or sth, 520 / 750 stock. It used the noisy reference cooler, i didn't know there were already brands out there that used a custom cooler. I know the VF700 is suitable for seriously overclocking a 7900GT, but with the fan running at 5V, it keeps the temperature of the core a little bit lower than the stock cooler... so you can can't call it 'unsuitable'. PS: i have a very low airflow aircase, no intakes, 280mm at 5V out. __________________ HTPC (mac osx): Mac Mini \| Core Duo 1.6Ghz \| 2GB DDR2 \| 26\" TFT Development (mac osx): Macbook \| Core 2 2.0Ghz \| 4GB DDR2 \| 250GB HD Games (win xp)*: E2160 @ 2.4Ghz \| HD3850 OC \| Asrock 4coredual-vsta \| 2GB DDR2

14th June 2006, 14:19	#10
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,021	cooler on Sparkle Caliber even at 25% fan speed core remains chilly and it's at least as loud/noiseless as VF700@5v compared to that XFX cooler, it's a monster http://www.overclock3d.net/reviews.p...3&id=53&page=3 __________________

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