OCC has published a new review of the ADATA Vitesta Extreme Edition DDR2 800 Memory

Nevertheless, there is a heat issue that needs to be addressed. With the XMS2 and the Ballistix RAM, I could touch them my fingers and be fine, but the ADATA ram was too hot to keep my fingers on. This did not seem to affect the performance at all, but I would recommend that you have some sort of active cooling on the modules so that you avoid the chance of them overheating. With both sets installed, I could feel the heat radiating so much that it was enveloping the CPU cooler and might cause a problem with the CPU temps over longterm use if not cooled properly. This may have been advoided by having the top part of the PC board exposed to give off the heat. This set had the top fully enveloped so there is no room to breathe. Also the heatsinks are not as secure as other manufacturers' sets that I have used and might wiggle off over time.

ADATA Vitesta Extreme Edition DDR2 800 Memory Review