[hairston630]

i have an evga 7900gt stock clocked at 450mhz....ive read many reviews on the volt mod for the 7900gt and how beneficial it is but my main concern is, is it worth it??...i hear that it is but id rather ask someone that is familiar with overclocking (you guys)....do you think this will burn my card up or kill the card?...i know i have a warranty but i hate pushing the envelope when it comes to things of this sort....I plan on upgrading to a nv5silencer or possibly a zalman and doing the mod myself....anyone have any objections to this??...please let me know THANKS!!

 

[Jakg]

you NEED aftermarket cooling FIRST, but if you go for something "safe" like 1.4v youll be fine (GTX's come with 1.4v stock, anyway!)

 

[hairston630]

well im most definitely gonna get the cooler first.....im wondering whether i should get an nv5silencer and mod it to fit the 7900 or if i should go with something else (no thermalright-to expensive-)...any suggestions??...and 1.4v wouldnt be too serious to cause the card to burn??

 

[hairston630]

o also and whats the threshold for high temps on a video card?

 

[DuckieHo]

Have you tried overclocking your video card at all yet? What's the best stable core OC?

 

[bluedevil]

my 7900gt co wont go above 565/1700 on stock volts....BTW the VF900 is the best air HSF out there...

 

[hairston630]

no i havent overclocked the card yet at all.....i dont plan on overclocking the card until i get my cooler plus im still getting my ambient and core temps down first (need to get my new fans)....i will be overclocking the card with the new cooler and if im not satisfied i plan on volt modding it....im just scared that its not a safe idea to volt mod....

 

[tubnotub1]

I did the 1.4 volt mod, and I would recommend it to anyone that has enough money to purchase a VF-900. My results with the 1.4 vmod were 650 on the core, completely stable, load temps in the upper 50's. The vmod is extremely easy to do, all you need is some tape and a circuit writer pen. There is a very good faq here at OCN you can go by. Here is a pic of the mod to show you just how easy it is.

http://www.overclock.net/gallery/sho...0/ppuser/21895

 

[hairston630]

Quote:

Originally Posted by tubnotub1 I did the 1.4 volt mod, and I would recommend it to anyone that has enough money to purchase a VF-900. My results with the 1.4 vmod were 650 on the core, completely stable, load temps in the upper 50's. The vmod is extremely easy to do, all you need is some tape and a circuit writer pen. There is a very good faq here at OCN you can go by. Here is a pic of the mod to show you just how easy it is. http://www.overclock.net/gallery/sho...0/ppuser/21895

thanks a whole lot man...i really appreciate that....can you tell me if this vf900 will fit a 7900gt?...i didnt see this on newegg that it would fit but do you know if it will fit a 7900gt?...lol im assuming since you said you hit 650 that it was the 7900gt you did it on but im not sure...thanks in advance

 

[Jakg]

They do fit absolutely fine on a 7900GT

 

[tubnotub1]

Yeah, it was the the 7900GT, and if you look at the pic closely you will notice that my card actually has a VF-900 (thats what the copper HS is part of.)

Check out this thread for a better pic of my old 7900GT and a VF-900.

 

[hairston630]

awesome thats good to hear...sorry i didnt get to check out the pic yet because im really busy here at work hehe...i do want to get one of those coolers for christmas i would imagine....now on the 7900gt with the volt mod how much of a performance jump did that help in your games???.....

 

[Mhill2029]

The VF900LED in my case works wonders. With the old stock cooler my GPU @ idle was 55Celcius, @ load 70Celcius. Put on the VF900LED with some applied AS5 and even with my current overclock @ idle is 37Celcius and under load barely 55Celcius!

I shall be getting a 2nd 7900GT & VF900LED soon, although i was considering the Volt mod myself. But i had the same fears as you. Will it screw up your card?

 

[hairston630]

yeah thats my concern (ruining the card)....I would just like to know what the performance jump or fps jump would be in games....

 

[DuckieHo]

Quote:

Originally Posted by bluedevil my 7900gt co wont go above 565/1700 on stock volts....BTW the VF900 is the best air HSF out there...

The VF900 is not the best air HSF out there in terms of performance. Sytrin and Thermalright both produce HSF that beat the Zalman VF900. However, their units require more than one additional slot.

 

[Ninja_Boy]

For cooling your GPU I'd get:
Zalman - VF900
Evercool Ram Sinks
&
Arctic Silver 5 Paste

You'll see a huge drop in temps will those three products, it'll help you with your overclock because upping the voltage, obviously, adds heat. So, that'll be a very good option.

 

[hairston630]

Quote:

Originally Posted by Ninja_Boy For cooling your GPU I'd get: Zalman - VF900 Evercool Ram Sinks & Arctic Silver 5 Paste You'll see a huge drop in temps will those three products, it'll help you with your overclock because upping the voltage, obviously, adds heat. So, that'll be a very good option.

good idea....yeah only thing I DIDNT think of was ram sinks....thanks for the links too.....can someone please shoot me a link on the performance gains of a volt modded 7900gt or at least some information or benches???

 

[Ninja_Boy]

Remember to apply AC5 to the Ram Heatsinks themselves, too, I heard the glue on the Evercool ones were weak, and, plus Arctic Silver 5 helps disipate heat. Good luck, I'm thinking of Flashing and Overclocking my ATi X800XL.

[OCN] Ninja_Boy

 

[Mhill2029]

You get ram sinks with the VF900LED btw lol

 

[Ninja_Boy]

The Evercools are much bigger and are better for cooling, but, yes, the VF900 comes with Zalman Blue Heatsinks, just the ones you can buy seperately.

[OCN] Ninja_Boy