[QUOTE=RJL65;2491848]Once I upgraded my main system to an i7-920, I encountered crashes with my HD4850. I am now suspecting that the latest Catalyst driver set, 10.1, had been rushed to release. The crashes occur primarily with the HD5xxx series, but may also occur with older cards. As a result, I would roll back to the Catalyst 9.xx driver set (perhaps all the way back to version 9.9, unless you have one of the newer cards which aren’t supported in a driver that old) until AMD comes out with the Catalyst 10.2 set.[/QUOTE]
An update on this:
It was not the latest driver set - but bad (faulty) memory - which caused all those crashes, memory dumps and blue screens on my new rig. I had the entire load of RAM replaced at that point (switching from a set of OCZ Gold 8-8-8 to a more expensive set of Corsair 7-7-7, both sets rated at DDR3-1600 speed and 1.65V), and the system is now rock-stable. It seems as though the i7’s and i5’s on-die memory controller were rather picky about the quality of the installed RAM.
After this experience, I don’t think I would purchase a lower-end memory module from OCZ - at least not for the foreseeable future. The owner of a small computer shop a few miles from home agreed with me on this finding.
Also, it is better to purchase slow-speed high-latency RAM than a cheap set of high-speed low-latency RAM for the same price (as the former would almost always perform up to spec while the latter might not run stably even at lower speeds or higher/looser latencies than the manufacturer’s/vendor’s claim). If one wants a good set of high-speed low-latency RAM for headroom, that person shall be prepared to pay significantly more money than on a set of standard RAM. (In my particular case, however, it amounted to $10 additional per 2GB module.)
To the OP above:
The crashes in your system are almost certainly caused by bad (faulty or failing) system RAM, as I discovered.