Need help overclocking my cpu

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J

Jordan Luck

Reputable
Jul 11, 2015
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i have a dell optiplex 755 and I found my pll number (SPL505YC256BT) but i cant find any way to overclock my CPU. Nothing recognizes my pll number.

Help would be appreciated. Thanks
 
Solution
lazyboy947
On most to all prebuilt computers from dell, hp, lenovo etc lock down the bios so that overclocking is not allowed and or capable. Other than that, the components used in said pre builts tend to be below par for overclocking, and some times even expansion add ons.

Even if u could overclock with that system, im pretty sure most would tell u not to do it unless u replace, the power supply, and motherboard and then since the case is probably proprietary, the case too, and sure the cpu cooler as the stock one should not be used when overclocking. Once u replace all that, might as well just buy a new system.
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lazyboy947

lazyboy947

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Jun 11, 2012
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On most to all prebuilt computers from dell, hp, lenovo etc lock down the bios so that overclocking is not allowed and or capable. Other than that, the components used in said pre builts tend to be below par for overclocking, and some times even expansion add ons.

Even if u could overclock with that system, im pretty sure most would tell u not to do it unless u replace, the power supply, and motherboard and then since the case is probably proprietary, the case too, and sure the cpu cooler as the stock one should not be used when overclocking. Once u replace all that, might as well just buy a new system.
 
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Solution
J

Jordan Luck

Reputable
Jul 11, 2015
8
0
4,520


The new cpu I want is a q9505
 
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B

bmacsys

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Jul 4, 2013
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Better go to the Dell web site and see if that cpu is compatible with your Optiplex.
 
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Kisianik

Kisianik

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Jan 24, 2013
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This is the list of supported CPUs for Optiplex 755:

3.00GHz Yorkfield Quad Core 3.00GHz, Q9650, 12MB
2.83GHz Yorkfield Quad Core 2.83GHz, Q9550, 12MB, 1333FSB, E0
2.66GHz Yorkfield Quad Core 2.66GHz, Q9400, 6MB, 1333FSB, R0
2.66GHz Kentsfield Quad Core 2.66GHz, Q6700, 8MB, 1066FSB, G0
2.40GHz Kentsfield Quad Core 2.40GHz, Q6600, 8MB, 1066FSB

I don't see 9505 here, so you can find out by trial and error if it will work.
 
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