MemtestCL vram errors

[Plimogz]

I'm testing out an open-box TF3 7950 and upon encountering some gnarly graphics behavior running Heaven 3.0 with both extreme tessalation and 8xAA have taken it upon myself to check if my vRAM might be at fault.

I found a promising little program called MemtestCL developed by a Folding@Home user (http://folding.stanford.edu/English/DownloadUtils) which does indeed shows errors.

I'm wondering if anyone else has tried this tester out, and with what results? And if some of you would give it a whirl and provide me with a much-needed reality check it would be very much appreciated. The program is tiny and only takes a couple minutes to run, if that helps.

For the record, all the errors are from the "random blocks" test. I'm getting roughly 500K errors per iteration.

edit: though I appear to only be testing 128 MiB of memory at the moment. the test will likely take much longer once I figure out how to set to test all available memory on my card.

edit2: read the Readme file

The amount of memory tested and number of
test iterations can be modified by adding command line parameters as follows:

MemtestCL [amount of RAM in megabytes] [number of test iterations]

For example, to run MemtestCL over 256 megabytes of RAM, with 100 test
iterations, execute the following command:

MemtestCL 256 100

Still, the amount of "random block" errors has scaled exactly with the amount of vram I set it to test, so this might well be a bug, I'm thinking.

edit3: helpful thread over at HardOCP http://hardforum.com/showthread.php?t=1675582

mehhh... it looks the app delivers false positives on 79XX cards. Now to find something else to fill this absurd amount of vram with.