Volt Modding the 7900GT

**simple_inhibition** · April 19th, 2006

hey i was browsing the web a bit ago and i came across THIS. its a simple volt mod that will change the voltage from the stock 1.2v to 1.4 (the same voltage of a 7900gtx) speads upwards of 600mhz on the core have been hit with this. basically you'll get a 256mb version of the 7900GTX. all it requires is some conductive paint and, a toothpick or needle and a steady hand. also theres a 1.3 and a 1.5 voltmod. just take a look at the1st and 20th posts in the thread.

Redleg · July 7th, 2006

I've got the 7900GT CO, and am wondering, how safe is this? I'm tempted to try, but don't have the extra cash on hand in case it fries the card. Any ideas?
Thanks,
Redleg

**One4yu2c** · July 7th, 2006

Quote:

Originally Posted by Redleg

I've got the 7900GT CO, and am wondering, how safe is this? I'm tempted to try, but don't have the extra cash on hand in case it fries the card. Any ideas?
Thanks,
Redleg

I haven't done it myself so I'll let someone else field the safety question, but I will say that whenever you're not in a position to replace the part should something go wrong, I highly advise leaving well enough alone. I'd save the mod either for when that situation changes, or the 7900GT starts to become long in the tooth.

**Hitman** · July 7th, 2006

I have the same card as you RedLeg, and it suits me just fine the way it is. It plays the 2 games I play the most in full detail so I am not worried. My only plans to buy another 7900gt is for SLI not replacement.

July 7th, 2006

i have a small rig with 2 x 7900gt's in them, there both vmoded for 1.55vgpu and they run fairly cool on water, for most people the vmod wont be worth anything...

Redleg · July 7th, 2006

I'm not planning on going water cooling, and have been looking at going the SLI route. I must have one of the few good cards also, cause I have no complaints with it. I've mostly played Morrowind and starting to play Oblivion, with no problems either, so I guess I'll leave well enough alone.
Thanks guys, I appreciate the information.
Redleg

**Capper** · July 7th, 2006

I recommend against modding video cards.....sometimes it works, most often it shortens the life of or kills the cards.
Having said that, HardOCP ran an article about a month ago hilighting the problems many companies were having with their "O/Ced out of the box" offerings

July 7th, 2006

I agree...my card's do not show any problem's not to say they wont..but my vmod is a little better then most guy's..i added the missing componet's that the SS card's have...so mine isent really a vmod it's just upgrading the card to what the SS is...

**gvblake22** · July 8th, 2006

I went all out and made an elaborate custom cooling solution for my 6800GT and it ended up taking a poop and dying on me randomly one day :(

So like every mod, do it at your own risk. And just like gambling, don't mod anything you can't afford to lose!!

sbohdan · July 13th, 2006

hey guys! I just wanted to add my 2 cents. modding is good as long as you know what you doing. make sure the cooling is sufficient, especially if you voltmod which will significantly raise the temps. the 6800LE that I modded still works great at the extra +118% speed and runs cooler then before the mod. since then I saw my friends card (a vanilla 6800), which he didnt want to mod but was running allways too hot with the crappy original cooler and guess what? it died on him 1,5 months after purchase.

April 19th, 2006	#1
simple_inhibition socket 939 junkie Join Date: Mar 2006 Location: In front of my pc in Ft Bragg XD Posts: 1,437 Blog Entries: 1	Volt Modding the 7900GT hey i was browsing the web a bit ago and i came across THIS. its a simple volt mod that will change the voltage from the stock 1.2v to 1.4 (the same voltage of a 7900gtx) speads upwards of 600mhz on the core have been hit with this. basically you'll get a 256mb version of the 7900GTX. all it requires is some conductive paint and, a toothpick or needle and a steady hand. also theres a 1.3 and a 1.5 voltmod. just take a look at the1st and 20th posts in the thread. Q6600 @ 3.6ghz (400x9 @ 1.408v) Gigabyte X38-DQ6 2x2GB G-Skill DDR2 1000 @ DDR2 1066 5-5-5-15 2T 2.1v Visiontek HD4870 Seagate 7200.11 500GB 32MB Cache HDD Razer Barracuda AC1 Silverstone DA750 Samsung Dual Layer DVD Burner Lian Li G70WB Thermochill PA120.3\|Swiftech Storm Rev.2\|Swiftech MCP 655

July 7th, 2006	#7
Capper I'm Evil Join Date: Dec 2005 Location: Las Vegas, NV Posts: 5,675 Blog Entries: 6	I recommend against modding video cards.....sometimes it works, most often it shortens the life of or kills the cards. Having said that, HardOCP ran an article about a month ago hilighting the problems many companies were having with their "O/Ced out of the box" offerings INTEL QX9650 ASUS P5E3 Premium 4GB DDR3-1600 Sapphire HD 3870X2 Danger Den Tower-26 (Custom W/C) 5 x Seagate 250GB HDD in RAID5 BFG ES 800W PSU

July 13th, 2006	#10
sbohdan VGA tuner & F@H Moderator Join Date: Jan 2006 Location: Ottawa, Canada Posts: 601	hey guys! I just wanted to add my 2 cents. modding is good as long as you know what you doing. make sure the cooling is sufficient, especially if you voltmod which will significantly raise the temps. the 6800LE that I modded still works great at the extra +118% speed and runs cooler then before the mod. since then I saw my friends card (a vanilla 6800), which he didnt want to mod but was running allways too hot with the crappy original cooler and guess what? it died on him 1,5 months after purchase. Main rig: Chieftec modded case,MSI P4N Diamond, D830@3.48Ghz,1.4V,928FSB 2GB patriot Extreme Performance 6400@900Mhz, 4-4-4-17 Inno3D 7900GT@542Mhz/1.6Ghz, Thermalright SI-97 Samsung 320GB, Maxtor 250GB; Antec 500W Swiftech NB, Asus StarIceBlue CPU cooler; XP Pro Laptop: Dell XPS 1530 (T7500; 3GB 667 RAM; 160GB 7200rpm HDD; 8600GT; Vista 32bit) my 6800LE mod

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July 7th, 2006	#2
Redleg 155 concussions feel good Join Date: Jul 2006 Location: The Highlands of Inverness, no, not Scotland, Florida Posts: 196	I've got the 7900GT CO, and am wondering, how safe is this? I'm tempted to try, but don't have the extra cash on hand in case it fries the card. Any ideas? Thanks, Redleg

July 7th, 2006	#4
Hitman Functional Alcoholic Join Date: May 2006 Location: 14S E:561116 N:3830189 Posts: 4,258 Blog Entries: 2	I have the same card as you RedLeg, and it suits me just fine the way it is. It plays the 2 games I play the most in full detail so I am not worried. My only plans to buy another 7900gt is for SLI not replacement.

July 7th, 2006	#5
BB mods's Guest Posts: n/a	i have a small rig with 2 x 7900gt's in them, there both vmoded for 1.55vgpu and they run fairly cool on water, for most people the vmod wont be worth anything...

July 8th, 2006	#9
gvblake22 Modder-ator Join Date: Dec 2005 Location: Tempe Desert Posts: 6,360 Blog Entries: 1	I went all out and made an elaborate custom cooling solution for my 6800GT and it ended up taking a poop and dying on me randomly one day :( So like every mod, do it at your own risk. And just like gambling, don't mod anything you can't afford to lose!!