Thought I'd share my first volt mod experience with you guys.

Seeing all the great volt moded 8800 GT OC results on xtremesystems forum, I finally decided to jump into the hard volt mod train. I went to Jalan Ara Saturday, bought an hakko solder iron, DMM, all the hardware needed for the Vmod. I also went to modernopc to buy HR 03-GT to replace the stock cooler.

Everything wasn't smooth but at the end I finally managed to get it working.


Although it's not AT stable, I can run 10 loops Crysis GPU benchmark and 2 loops 3dmark06 at 799/1998/975 @ 1.2V idle (still testing)

After testing max stable OC at 1.2V idle, I'll go up to 1.3V idle. So far my best 3dmark06 run is 13025. Not bad for a dual core

The HR-03 GT is pricey, but it is an awesome cooler. I've never reached higher than 54*C at 799/1998 and it was without A/C, after 1 hour of GPU testing almost non stop 

Turns out pretty good for a 1st volt mod and considering that I had never soldered anything before.

ooo... high risk high return... wats ur SM2.0/SM3.0 score for 3dmark06 whn u get 13k score..... post up the score and let us see its better...

I'm at work right now so I'll post my score tonight. I didn't post because I thought I'll wait once found max OC at 1.3V 

Whats the best bios for OC atm?... im using latest msi bios ....

Here is my 3dmark06 score at 792/1944/993 @ 1.2V idle



I've actually pass 3dmark06 at 799/1998 @ 1.2V but I saw afterwards that I left the memory at 950MHz so my score was slightly lower than this one. 

I'll see tonight if I can continue to increase the clock at the same voltage but i think I'm reaching already the max for 1.2V
I've tried several bioses from different brands before the volt mod and all gave me the same results. Now I'm using my stock bios modified with 1.1V setting and fan increasing with the core temp ... which is now useless since I have done the vmod and change the stock heatsink

bro is ur oc stable??
did u try to stress the card using atitool artifact scanner??
my card can go further @ 1.2v but the max stable is 1890 for sp..

It is not not AT stable at this speed, but I did could run 10 loops of Crysis GPU benchmark followed by 2 loops of 3dmark06 without crashing/artefacting.

AT is fully stable (20 min) only at 783/1890.

I personally don't really care to be AT stable as long as I am stable in games. So my next step will be to game (mainly Crysis as it stresses the card like nothing else ) and if I can play 1-2 hours without a crash, I call it a day. Later I will also try other games. I think I will probably have to back up a bit from 799/1998 since I generally found that Crysis was stable more or less at the same speed as AT, but I don't really base my OC on AT.

My approach for the CPU is different, There I want to be 100% stable orthos, OCCT, ...

hurm i seem to be trusting the atitool more than crysis..
but in the end it's up to the personal preferences..
btw, bro when will u try 1.3v??
wanna see la how high the sp can go..
because right now, gigabyte utility only support vcore overvoltage up to 1.2v only 

bro ur score higher than mine but why my score is better than urs... in terms of SM2.0/SM3.0

Probably because of your CPU being clock higher than mine. I want to try later to OC my CPU higher for bench and see what kind of increase in score i can get.

bro ur score higher than mine but why my score is better than urs... in terms of SM2.0/SM3.0

hey bro pls bench again with 1280 x 1024 res
ur using 1152 x 864 only

hey bro pls bench again with 1280 x 1024 res
ur using 1152 x 864 only

Oh yeah, good find ...

I was starting to wonder how come my score was so low compared to him.

I just tried a run with my CPU at 3.33GHz and GPU at 842/2106/993  to see if it was making a big difference but was still under his score 



@ben_panced: I tried 1.3V and seems to be AT stable around 828/1998 ... +.1V doesn't make a huge difference. But I will continue my own stability testing and see how far I can go in game ...

ok i found that my 3dmark06 resolution setting cant be set to 1280x1024 in XP(no options of it)... but in vista ultimate i found out it have 1280x1024... why ah?...
so i decide to bench at 1440x900.. here is what i get.. with 740/1838/2136 & 3.0ghz Q6600 at TOP edition default voltage...