Asus 4870 Issues

Hi all, having a bit of a problem with my 4870 1gb. I can play stuff like Left 4 Dead for hours without any problem but when I play more demanding games like Batman AA, Need For Speed Shift and Crysis my machine locks up - The monitor loses signal, the last sound played repeats constantly and the system stops responding.

Ive tried with Vista and Windows 7 and have the same issue. My spec is Asus 4970, e6600, gigabyte 965p ds3, 2gig of corsair ram and a coolermaster igreen 600w psu. Ive rested the memory for hours and thats come up clean.

Anyone had any similar issues with a 4870? not sure whether its the card or psu maybe? trouble is i dont have access to another machine to test the card at the moment.

Thanks for any advice!

Last time this happened to me it was the sound driver even though the graphics locked up...

Try checking the temperatures: GPU-Z for the GPU and Speedfan for the CPU.
Expect no more than 90C for the card and 55 for the CPU.

Hi. Same gfx card, same problem (as do may others, as I can understand). Partial solution at the bottom.

After the crash (in crysis - yes, latest drivers, game patched) I inspected the card. Therories were hot GPU or too little power. (just got a new mobo/CPU and GPU, but still running on the old 450W PSU).

Not finding GPU critically hot I found the red "Critical Core Power Failure" d 601 LED turned on. (find them here: http://forums.amd.com/game/message [...] adid=97885 )

So, I thought - new PSU. Off I went, now running on a 650 Watt which should be sufficient (calculate ASUS recommendations for your system here: http://support.asus.com/PowerSuppl [...] uage=en-us

same problem, I should have around 100 Watt overhead, this should be enough, right?

So, so far no clue as to what causes this - I have however found, that by installing the "Asus smart doctor" and "underclocking" the GPU to around 725 MHz, I will get a stable system. (I think this can be done from Catalyst too). The odd thing is, that right after installing the newest GPU drivers and patching Crysis, the game played flawlessly for an entire evening without lowering the GPU clock, so I am a bit at ends here. But until someone comes up with a "real" solution, using the lower clock speed will at least let you play your games.

If anyone finds a proper solution, please post it!