I recently purchased a Q9550 from Microcenter for $150 and have read about many other owners of the Q9550 being able to reach near 4GHz while staying well below 1.4 vcore. I am using a GA-P35-DS3L and am positive that the mobo's FSB can run comfortably at a FSB speed of up to 465 MHz because that is what I ran my old E6750 at (465x8=3.72GHz). Unfortunately, I cannot get anywhere near the great clock speeds other people are reporting with their Q9550's. Even with vcore set to 1.35, my system is not stable running at only 3.2 GHz (that's 380x8.5). The weirdest part about the instability is that unlike my previous overclocking experience with my old E6750, my system does not blue screen under load, but instead simply freezes. So far, the highest stable OC I was able to achieve was 3.145 MHz (370x8.5). Is it possible that this Q9550 simply cannot be pushed very much, or does it sound like there is something else going on? Maybe my PSU isn't powerful enough for the quad core? I'm using a OCZ600SXS power supply. Here are the rest of my system specs (from my xfire page):
Manufacturer: Gigabyte Technology Co., Ltd.
Processor: Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz (4 CPUs), ~2.8GHz
Memory: 4096MB RAM
Hard Drive: 250 GB Total
Video Card: NVIDIA GeForce GTX 470
Monitor: Samsung SyncMaster T220
Sound Card: Realtek Digital Output (Realtek High Definition Audio)
Speakers/Headphones: Turtle Beach HPA2 Surround Gaming Headset
Keyboard: Standard PS/2 Keyboard
Mouse: MX518
Mouse Surface: Max Payne
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7600) (7600.win7_gdr.100618-1621)
Motherboard: GA-P35-DS3L
Computer Case: NZXT M59
Thanks in advance for any help.
Manufacturer: Gigabyte Technology Co., Ltd.
Processor: Intel(R) Core(TM)2 Quad CPU Q9550 @ 2.83GHz (4 CPUs), ~2.8GHz
Memory: 4096MB RAM
Hard Drive: 250 GB Total
Video Card: NVIDIA GeForce GTX 470
Monitor: Samsung SyncMaster T220
Sound Card: Realtek Digital Output (Realtek High Definition Audio)
Speakers/Headphones: Turtle Beach HPA2 Surround Gaming Headset
Keyboard: Standard PS/2 Keyboard
Mouse: MX518
Mouse Surface: Max Payne
Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7600) (7600.win7_gdr.100618-1621)
Motherboard: GA-P35-DS3L
Computer Case: NZXT M59
Thanks in advance for any help.