An affordable upgrade if you wish to max out your G34 opteron system, the 6386 is the last and best owner controlled x86 CPU. http://www.ebay.com/itm/AMD-OPTERON-OS6386YETGGHK-6386-SE-2-8GHz-16MB-L3-Cache-Socket-G34-140W-/282590493652 (Note: I am not affiliated with that company) It is one of the best CPU's on cpubenchmark.