overclocking C2D E6550 - Overclock.net

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post #1 of 8 Old 02-22-2008, 11:51 AM - Thread Starter
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My C2D E6550 has a fsb of 1333mhz, but my mobo only supports a fsb of 1066mhz, so this means my cpu is only running at 1.87ghz when its a 2.33ghz cpu. Would it be dangerous to overclock this considering my mobo is already using the cpu at its highest speed? If so, how could I overclock it in bios, and with what settings? I cant get it to run at stock speed because of the mobo's fsb

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post #2 of 8 Old 02-22-2008, 11:54 AM
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Thats actually how you overclock.

Just boost the FSB.

Keep the temps under 55 load in Orthos (CPU test only, no RAM).

Also disable C1E and Speedstep.
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post #3 of 8 Old 02-22-2008, 12:01 PM - Thread Starter
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I have c1E and EIST disabled in BIOS, but my multiplier is already on x 7.0 and wont go any higher. Im assuming raising that number is how I should get it to run at 2.33ghz? Also, how do I go about forcing the fsb speed up? Im new to this

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post #4 of 8 Old 02-22-2008, 12:10 PM
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If you increase the core clock(core speed) in the bios, I'm fairly sure your FSB will automaticaly increase with it.

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post #5 of 8 Old 02-22-2008, 12:51 PM - Thread Starter
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im pretty sure that part is greyed out, and it wont let me even highlight it.

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post #6 of 8 Old 02-24-2008, 04:22 AM
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U cant change multiplier of E6550. Its locked to 7. How do i know?? I have it
Here is my CPUz validation http://valid.x86-secret.com/show_oc.php?id=318945
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post #7 of 8 Old 02-24-2008, 07:58 AM
 
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i have that chip too(its in my sig). the multi is locked at 7, cant go any higher. i currently have it running on a Gigabyte P35-DS3L board. i have it running @ 3.25 folding 24/7. i still have some head room on my temps, but i haven't had time to test it, depending on your board and h/s,(i'm using a zalman 9700) you should deffinately get to 3.2 + with that chip! good luck.

10 Million+ Folding at Home points 

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post #8 of 8 Old 02-24-2008, 10:09 PM
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I was in the same boat a couple months ago--just keep reading the forums and you'll get acquainted with this OC'ing thing... The e6550 can only multiply at 6 or 7. However, SpeedStep is an energy-saving feature which lowers the multiplier to 6 when you're not running many programs. So if your FSB is at 400 or 2.8 GHz (7*400); if idle, it'll go to ~2.4 GHz (6*400)

I'm still on the stock Intel HSF, and i've got my e6550 @ 2.80GHz (7*400; 400=the FSB) 24/7, my RAM still @ 400(DDR-800). Although, the timings are tightened to 4-4-4-12, from 5-5-5-15. I can get 3.15GHz(7*450) stable with temps at about 57-58C under load, RAM at 450(DDR-900).

Official temps. are on my system, below.
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