|Your motherboard is based on an old nForce 400 series chipset (nForce 430). It was originally introduced about 5 yrs ago for the S939 A64. NVIDIA's currently into the nForce 900 series, so your board is 5 generations old. Boards based on the 6150/430 chipset combo have been fitted with DDR3 slots & are still being sold today, but I don't know why anyone would buy one considering all the newer/better options available.|
Your CPU is one of the "bad" Phenoms - "the problem is with the CPU’s translation lookaside buffer (TLB) and L3 cache, and can cause system crashes and data corruption." The 9500 & the 9600 were the only Phenoms to have this problem. Once it was identified, AMD rushed to fix it. The "new" Phenoms all had "50" added to their model model to identify them as the fixed version...9550, 9650, 9750, etc.
AMD Phenom is BROKEN
BTW, the transition to DDR3 is not all it's cracked up to be, at least not for AMD. Intel's Core i7 & it's derivatives can take full advantage of it, but there's little performance difference between DDR2-1066 & DDR3-1333 in AMD's lineup. The memory controller in your CPU can handle up to DDR2-1066, ideally, that's what you should be running. But it's not worth repacing your DDR2-800.
That'll give you an idea where your current CPU/board/RAM config stands.
Regardless of the above, your system *should* play the games you mentioned without any problems at all. Are you sure you're not installing something that's bogging the system down? Are you installing the latest NVIDIA chipset drivers & the lastest ATI graphics drivers? Which anti-virus program are you running? Did you install a bunch of programs that load at startup (AIM, Yahoo, iTunes, QuickTime, Adobe, Nero, printer/scanner/camera software, etc)?