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CPU upgrade questions!
Hi everyone!
Just joined the forum, so kinda new here. My question is:
I have a Dell Optiplex 755 SFF ( Core 2 Duo E7500, 4GB RAM, 500GB HDD). I am thinking of upgrading my CPU to a Core 2 Quad Q9650. Will this processor be compatible with the 0PU052 motherboard?
speedstep
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March 14th, 2016 07:00
http://www.dell.com/downloads/global/products/optix/en/opti_755_techspecs.pdf
Dell OptiPlex 755 SFF Small Form Factor Motherboard JR269 PU052 power supply and heatsink are not sufficient for a Q9650 nor is the chipset supporting 1333 Mhz 45nm chips.
http://ark.intel.com/products/30790/Intel-Core2-Quad-Processor-Q6700-8M-Cache-2_66-GHz-1066-MHz-FSB
http://ark.intel.com/products/35428/Intel-Core2-Quad-Processor-Q9650-12M-Cache-3_00-GHz-1333-MHz-FSB
Q6700 is the fastest validated.
speedstep
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March 14th, 2016 12:00
Dell uses a proprietary heatsink/fan.
You will shutdown with fan failure using the INTEL fan.
You will shutdown with unsupported processor with the non performance dell heatsink.
(Intel Q35 Express Chipset (ICH9DO)) System bus speed 800 MHz
Core 2 Duo E7500 is 1066 Mhz FSB not 1333mhz FSB. L2 Cache is 3meg not 12 meg. PC2 6400 ram is as fast as you get with DDR2.
There is no PC3 8500 ram aka 1333mhz and therefore its not working.
Since you are disputing whether it works or NOT you get to decide if
that is true based on buying it and having it not work. Bios version
is recommeded to be updated to A08 then A19 then A20 then A22.
You cannot jump directly from A08 to A22. Neither Dell nor I support that Q9650 series quads work.
http://ark.intel.com/products/36503/Intel-Core2-Duo-Processor-E7500-3M-Cache-2_93-GHz-1066-MHz-FSB
Xeon's wont go into the socket and if you cut the tabs off so that it will it still requires a flex circuit to swap pins.
None of this is supported.
Q9650 is
E7500 is
Q6700 is
speedstep
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March 15th, 2016 10:00
The chart is based on what was validated at the time the system was put out.
It does not mean that all future chips and FSB aka 1333mhz will work or should work.
Newer models like the 760 or 960 or 780 or 980 support newer chips but they are not all socket 775.
Aka the 780 and 980 I believe take socket 1156 core I series.
DELL-Hemalatha
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March 13th, 2016 22:00
Hi Supasped
Thanks for writing to us.
These are few of the quadcores listed , that are tested and are compatible on the system.
Q9450
Q6700
Q6600
Q9300
Q9400
Q9550
Hope this info helps.
REGARDS
SupaSped
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March 14th, 2016 11:00
Thanks for the help!
It helps to know that a Q9550 works, so thanks for that. But the thing is, I really wanted an upgrade in both core count and clock. I know it probablt sounds kinda greedy, and I know that usually, when you have a large core count, the clock is not as fast as other processors (e.g. Xeon E5-2699 v3),but it woulda been nice to have a Q9650. But then again, if it suports a 9550, it could spport a 9650, right?
SupaSped
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March 14th, 2016 11:00
Thanks for the help! I saw that chart too, but to be honest, i didn't really pay any regard to it, since my 755 SFF came with a Core 2 Duo E7500 @ 2.93 GHz, which obviously isn't there, and as far as I am aware, the other components handle it just fine. Also, my E7500 and the Q9650 are both built on 45nm lithography, all three have dimensions of 37.5mmx37.5mm and the ARK page for the chipset says it supports 1333MHz FSB. To answer your point about the heatsink, I will swap out the standard heatsink for the genuine Intel heatsink for the Q9650. The Q6700 has a TDP of 105W, while the Q9650 has a TDP of 95W, and the E7500 an even lower 65W, so I guess that if the power supply can support the Q6700, it will probably be able to support the Q9650, right. Again, though, thanks for the help, it was much appreciated.
SupaSped
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March 15th, 2016 10:00
Ok, then, thanks for the help.I guess that I'll have to go for a Q6700. I still don't get why the E7500 is't on the chart, though.
SupaSped
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March 15th, 2016 10:00
Okay, thanks for that. I didn't know that, hooray for forums eh?:emotion-5: