Hi, I'm new on this forum, also a begginer with overclocking. I was searching many other forums but still didn't find answer to my questions.. Hope I'll get them here. My AMD Athlon x2 7750+ BE wich I'm trying to overclok can't go over 2.9 ghz. I have only raised multipler from 13.5 to 14.5, and if I try to go higher,system crashes on startup or during the benchmark. I saw many guys got same cpu OC-ed @ 3.2 Ghz +. My temp seem to be fine, I'ts 31C right now. I also tried raising the bus speed, but I can only get my PC stable at 204mhz bus speed. I'm currently running on stock voltage (1.325V in BIOS,cpu-z reporting it as 1.376V)and I tried pushing it up,but the system would still crash. I also tried replacing the heatsink but that would bring no change.My sytem: Gigabyte GA-M52L-S3 board AMD Athlon 7750 BE @ 2.9ghz 3x 1gb RAM 667mhz Gainward GeForce gt430 1GB 700/m700/1400 overclocked @ 825/m910/1650 2x 80gb Sata,Ata hard drives 420W power supply I'd like to notice that on my motherbord it sais: (Note) If you install an AMD AM3/AM2+ CPU on AM2 motherboard, the system bus speed will downgrade from HT3.0(5200 MT/s) to HT1.0 (2000 MT/s); however, the frequency of AM2+ CPU will not be impacted. Maybe that's the problem,so if anyone has any idea how to help me please replay. Thanks in advance and sorry if any language misstakes.