Hi, everyone! My first post here.
So I've got this PowerColor Radeon 4770 that I've had since the summer of 2009. It has served me well, but now it has just about reached the end of its career. Before I replace it, however, I want to see if I can squeeze that last bit of life out of it by flashing it to the Asus Top BIOS and upping the voltage a little for some higher overclocks. I downloaded the BIOS using the link in the opening post of this thread, and then tried flashing it onto my card using TechPowerUp's Radeon BIOS Editor (or RBE) and ATi Winflash, but neither of them work. RBE gave me an error message saying: "Checksum mismatch! Did you select the proper adapter for this bios?" In the case of Winflash, the error said: "SubsystemIDs mismatch" Does this mean that I simply cannot flash this particular card with this BIOS, or is there a way still? I know that RBE features a "force flash" option, but I don't particularly fancy clicking it before consulting experts. What does this option do, and is it safe to use? I'm not too worried about wrecking my card, as I'll be replacing it soon anyway unless I can get this new BIOS to work with satisfying results, and also as it has minuscule resell value at this point. Still, I would rather it remained functional and available as a backup.
So there you have it. Thanks in advance for all help I may get, and take care!
Edit: Well, this is just typical. After a bit more searching, I found the answers I was looking for here: http://forums.overclockers.co.uk/showthread.php?t=18221844&page=3
Edit 2: Right, so now I've tried some of the other 4770 BIOS' found on TechPowerUp, as they actually did support voltages up to 1.2, unlike the Top BIOS. The first one seemed to work at first, but then the video driver just started crashing over and over. The second, unfortunately, didn't work at all, and now my PC won't boot. It's really no big deal, I was entirely prepared for an outcome like this, but if there is a way to get it working again without using another video card to access the computer, I'd be very happy to hear about it. I don't want to buy a replacement until I see what the GeForce 660 series is capable of, and word seems to be that it won't launch until summer. I can cope with not having access to a gaming computer for that long, but it'd still be nice to have it. Edited by thetoe - 4/25/12 at 2:58pm