7900GT Voltmod-2

[ziddey]

you can do that method, but it'd be a lot easier, especially if you're only using solder to use the method I linked to. And in the bios, you can program for 2d vs 3d clocks, so while in 2d mode, it'll bring down the freq.

[Per Hansson]

The second Mosfet to be replaced is directly under the damaged one, and is called "4410". This one is a Mosfet with slightly less specs than the 4420, better to use the same Mosfet for both.

Thank you very much for keeping this thread up to date t024484, all the work you have put into it is truly appreciated!

I managed to destroy my SI4410 N-Channel MOSFET, was going to remove the heatsink I had put over it and the other IC's there but unfortunately the 4410 cracked in two
Anyway, with the info you posted I take it that it would be better to replace the SI4410 with a SI4420?
Anyway, I have placed an order at www.elfa.se for both of them, so just tell me which one would be the best fit please... (My still intact MOSFET is a SI4420)

The reason I was removing the heatsink was to get access to the resistor for increasing vmem, I was actually going to replace it with a 1kohm pot and then try both increasing and decreasing the voltage, Crysis has given me reason to try to get better performance out of the old trusty 7900GT, that, and that nVidia has a shortage of 8800GT cards so I don't know when I'll get mine?

Here are some overclocking results with the vcore mod;

1.200v;   1.250v;   1.300v;   1.350v;   1.400v;   1.450v;   1.500v;   1.550v;
550/880   580/880   600/880   630/880   650/880   670/880   710/880   720/880

[Per Hansson]

I replaced the SI4410 with a SI4420

Card is working great again... And there is no difference in the maximum overclock of the memory it seems...
Mainboard have decided to give up however so have not had very much time to test it...

[ziddey]

holy cow i got the craziest reply to thread email =o