Increasing voltage on G73JH?

Is it possible to increase the voltage of the Mobility Radeon 5870 in the G73JH? Mine's currently at 1.15V and seems like a really poor overclocker. I wonder if more voltage would help.

 

No it is hard wired in. 1.15v is max. Try flashing to the od2 BIOS for better battery life and I have had better overclocks.

 

Nope, only with a hardmod involving you hardwiring a higher voltage to the regulators on the chip. Very tricky to do and very high risk involved either you could kill the card, kill the motherboard or probably even kill yourself if your wiring was that bad.

The JH runs hot enough the last things the 5870M need is more power.

 

Darn. Well I guess no volt mod for me then.

I've tried overclocking using both Chastity's OD2 vBIOS and MSI Afterburner. The maximum stable overclock I can get is a measly 825/1085 but that only gets me, at most, a 10% boost in synthetic benchmarks. In real games the boost is actually even smaller. I was just hoping to maybe increase my performance in some of the more demanding games, such as Battlefield 3.

 

Those are not bad clocks and you are in desktop 5770 territory. Most people max at 800/1100 with good cards and as I've stated before my other card only maxed 775/1075 so it's the luck of the draw. Anything higher is usually unstable 24/7 however there are some exceptions.

 

Yeah. I think that the ASUS Mobility 5870s are just bad overclockers in general for whatever reason. I've heard of people overclocking the 5870s in Clevos and Alienwares an additional 200 MHz on both core and memory, but since mobile GPUs are custom-made by each company it might just be that those cards are better suited for higher clocks.

In actuality I just keep mine at stock because, like I said, the performance increase is no negligible, at least in my eyes, that I don't bother with the tinkering. And the reality is, there are always one or two games that are extremely sensitive to overclocking (Crysis for me), that will artifact or crash even with the slightest bump. But all in all I'm really happy with the performance I'm getting from this machine, especially for the price I paid.

 

You're correct about the cards but I think the voltage is an issue along with fan control.. The highest I've hit is 860/1135 stable.

 

The GPU overheats on stock volts! Voltmods oh my!

 

Maybe your's. My max ed out overclocked (825/1100) and Furmark at 83°C.