I've recently gotten some graphics corruptions, and they've been getting more common recently. For instance, as I'm writing this, I have this one in chrome (the barcode-like thing at the top right):
At first I thought this was a Chrome thing, but I started seeing this in other applications. Making the application do a redraw fixes the problem, but after some time, another one pops out somewhere else.
Sometimes it's barcode-like black-and-white structures, sometimes they're colored, but they're always in rectangular blocks.
I'm guessing these may be caused by problems in VRAM, so for now I'll change the video card. I don't think it's a RAM problem, because if it got randomly corrupted, I'd be getting bluescreens, and so far I've gotten none.
My setup is an HP Z420 Workstation
CPU: Xeon E5-1620 3.6GHz
Southbridge: Intel X79
Memory: 2GB x8 (seems to be mixed between Micron and Hyundai)
Graphics: NVIDIA GeForce GTX 550 Ti 1GHz
OS: Windows 7 Professional SP1
I'm doing no overclocking or other strange stuff