Leadtek Geforce GT 220 Extreme Overclocking Experiment

jmke · 10th November 2009, 22:03

We pour some -180°C LN2 over NVIDIA's 40nm GPU to see how high it will scale. With the help of some voltage modifications we are ready to breach some world records at the low end of the video card scale.

http://www.madshrimps.be/gotoartik.php?articID=968

Massman · 10th November 2009, 22:18

John, could you attach both PDF's to this thread? People who are no OCTB-member can't seen the voltmod thread.

jmke · 10th November 2009, 22:27

Massman · 10th November 2009, 22:32

Thanks.

I'm actually tempted in buying another GT220 to check for overclockability :-)

16th November 2009, 17:15

Interesting read.

Since the memory chip temperatures are obviously holding the core/shader speeds back, wouldn't it not be very hard to jury-rig an inverted peltier block, hot side on the chips? Wouldn't take very much, adjust the peltier voltage as needed to keep them just above zero centigrade... perhaps with a pot that allowed extra spacing. Or direct heating the other side of the PCB directly underneath the memory solder points, sort of like an inverse waterblock for the memory if it could be insulated from shorting.

10th November 2009, 22:03	#1
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,022	Leadtek Geforce GT 220 Extreme Overclocking Experiment We pour some -180°C LN2 over NVIDIA's 40nm GPU to see how high it will scale. With the help of some voltage modifications we are ready to breach some world records at the low end of the video card scale. http://www.madshrimps.be/gotoartik.php?articID=968 __________________ Last edited by jmke : 10th November 2009 at 22:27.

10th November 2009, 22:18	#2
Massman [M] Reviewer Join Date: Nov 2004 Location: Waregem Posts: 6,466	John, could you attach both PDF's to this thread? People who are no OCTB-member can't seen the voltmod thread. __________________

10th November 2009, 22:27	#3
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 79,022	done __________________

10th November 2009, 22:32	#4
Massman [M] Reviewer Join Date: Nov 2004 Location: Waregem Posts: 6,466	Thanks. I'm actually tempted in buying another GT220 to check for overclockability :-) __________________

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16th November 2009, 17:15	#5
Kougar Posts: n/a	Interesting read. Since the memory chip temperatures are obviously holding the core/shader speeds back, wouldn't it not be very hard to jury-rig an inverted peltier block, hot side on the chips? Wouldn't take very much, adjust the peltier voltage as needed to keep them just above zero centigrade... perhaps with a pot that allowed extra spacing. Or direct heating the other side of the PCB directly underneath the memory solder points, sort of like an inverse waterblock for the memory if it could be insulated from shorting.