Hi there everyone! (excuse my bad english) I got a lot of questions, because i plan to upgrade my actual processor to a new one, i hope somebody around here, can help me to make a choice. my actual machine are: AMD Athlon 64 X2 5200+ @ 2.7 GHZ MSI K9AGM3 (BIOS Already Updated to support AM2+ CPU - Phenom X3 or X4) 4Gb DDR2 - 800Mhz ATI Radeon HD 3870 512Mb GDDR4 Oc Edition (MSI) Maxtor Sata II - 7200Rpm - 250GB Thermaltake PurePower 500W and other Stuff. I want to upgrade my Proc. to a AMD Phenom X3 8450 @ 2.1Ghz The Questions are: 1. Its a significant upgrade from the X2 5200+ to X3 8450? 2. What happens with Speed?? this change comes from 2.7Ghz to 2.1Ghz... Differences?? What is more important, more Cache or more clock Speed??? 3. My X2 is 65W, now, the X3 i plan to purchase is 95W!!!! that means more power supply power??? more heat from the proc.?? may i need to change my power supply?? 4. With this change, i see more boost on games like crysis or new ones that are really thougt and consumes a lot of CPU?? i plan to buy this Proc. and no better one, because my budget is limited. i dont get the money. Tnx!