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Phædrus2401 · 06-15-2009, 11:48 AM

I'm buying a new CPU and power supply in July, a Core 2 Quad Q9550 2.83GHz and a Corsair 850tx. I've heard that there are two stepping version of the Q9550, the C1 and E0, with the E0 being better for overclocking. Unfortunately, Newegg does not say which version is provides, and some people report getting the C1 stepping, while others report the E0, with no discernable pattern. I want to know if it's worth contacting Newegg about to see which version I get, and how much difference it would make to overclocking ability. If it's just a matter of .1GHz more, or 1/8th of a volt less, I don't really care, but if it will make a large difference I want to know what I'm getting before I buy.

Also, what max overclocked speed could I expect with both versions, with these specs?

MBD: ASUS P5Q Pro
CPU: Intel Core 2 Quad Q9550 2.83GHz
HS/F: Thermaltake V1 110mm
PSU: Corsair 850tx
RAM: OCZ Platinum 4GB (2x2GB) DDR2 1066
GPU: Sapphire Radeon HD4870

Thanks. :)

06-15-2009, 11:48 AM	#1 (permalink)
Phædrus2401 Hardware Tech Team Join Date: Mar 2009 Location: New Orleans Posts: 3,834 OS: Vista Ultimate x64 SP1 + Ubuntu 9.04 My System	Q9550 Overclocking: C1 vs E0 stepping I'm buying a new CPU and power supply in July, a Core 2 Quad Q9550 2.83GHz and a Corsair 850tx. I've heard that there are two stepping version of the Q9550, the C1 and E0, with the E0 being better for overclocking. Unfortunately, Newegg does not say which version is provides, and some people report getting the C1 stepping, while others report the E0, with no discernable pattern. I want to know if it's worth contacting Newegg about to see which version I get, and how much difference it would make to overclocking ability. If it's just a matter of .1GHz more, or 1/8th of a volt less, I don't really care, but if it will make a large difference I want to know what I'm getting before I buy. Also, what max overclocked speed could I expect with both versions, with these specs? MBD: ASUS P5Q Pro CPU: Intel Core 2 Quad Q9550 2.83GHz HS/F: Thermaltake V1 110mm PSU: Corsair 850tx RAM: OCZ Platinum 4GB (2x2GB) DDR2 1066 GPU: Sapphire Radeon HD4870 Thanks. :)