Best CPU for Optiplex gx520?

[kevinakerberg]

Hi everyone,
I have an optiplex gx520 desktop form factor currently fitted with a Pentium 4 521 HT. That will soon be replaced with a Pentium D. But, I was wondering if it could take something like a Core 2 Duo or Core 2 duo? Thanks.

 

[Snipergod87]

While you have a 945G Express chipset which can support Core 2 Duo's, Dell limits it to Pentium 4's
http://en.community.dell.com/support-forums/desktop/f/3514/t/19366266

It looks like this is really the most you can support
Intel
® Pentium® 4 800MHz FSB socket T with HT, XD, EM64T, and 2MB L2 cache and EIST* (6xx series)
Intel
® Pentium® 4 800MHz FSB socket T with HT, XD, EM64T, and 1MB L2 cache (5xx series)
Intel
® Celeron® D 533 MHz FSB Socket T with XD and EM64T (3xx series)

 

[kevinakerberg]

http://www.dell.com/downloads/global/products/optix/en/spec_optix_gx520-gx620_en.pdf
core 2 duo? nope

Highest you can get is a Pentium d?