I'd try it on a system without such an item.
I have a Gateway GT5228 AMD64 X2 4200 with 2 GB RAM (PC-4200 533mHz) installed. When I add 2 GB (2 sticks) of Kingston RAM (same specs as factory), Vista Ultimate (x64) hangs after 10 seconds or so. The screen flashes, becomes pixelated, then the machine restarts. I can boot and have Vista read all 4 GB in Safe Mode. XP Pro x64 boots and reads all 4 GB RAM. SuSE Linux 10.2 boots and reads all 4 GB of RAM. It's not a compatibility issue...it's a Vista issue. Has anyone else had this problem? Any work arounds?
Here are the specs of my Gateway GT5228:
AMD Athlon? 64 X2 4200+ dual-core AMD64 Technology 2.2 GHz
2000 MHz system bus
L2 cache: 512 KB

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