vMod

[foothead]

Okay, I know I am crazy, but I want to do a vmod on my 4870x2. I've kinda had it with being limited by the 1500mv in afterburner.

Anybody know of a guide for this card? I know what I need to do, but would rather see some before and after results.

 

[Cabbs]

Give this thread a go.

http://www.xtremesystems.org/Forums/showthread.php?t=198153

 

[foothead]

Thanks. That looks good.

I think I am gonna try my 5750 too. AFAIK, there still isn't a vmem mod for it, so I'm gonna poke around with a multimeter a bit tomorrow and see what I can find. A pencil mod could also be feasible on this card, but I have yet to see it.

 

[Cabbs]

I've never really looked into Vmods too much before, always been afraid to try.

 

[foothead]

I think I might have identified a vmem pencil mod for the 5750, but I need a new battery for the multimeter to make sure.

 

[Cabbs]

Sweet. Are you trying to really push your 5750?

 

[foothead]

I'm expecting over 1k core, hopefully I'll be able to get more like 1050.

YAY

I managed to create a working pencil mod for the 5750. I am also working on a hard vmod so I can just dial in the voltage for testing.

Hard vcore mod is a go. I also have added a molex connector for easy reading of vcore, and the fan is now soldered onto the board's voltage input, so it will no be limited by what the built-in controller can supply.

Here are pictures.

I just need to work on something for vmem and possibly a better cooler mod and this thing will be epic.