Processor Pentium D - Dell OptiPlex GX520 PC Desktop

Compatible Processors Pentium 4, Celeron D, Pentium Extreme Edition, Pentium D 64-bit Processors Compatibility Yes Processor Socket LGA775 Socket
Compatible Processors Pentium 4, Celeron D, Pentium Extreme Edition, Pentium D 64-bit Processors Compatibility Yes Processor Socket LGA775 Socket
Compatible Processors Pentium 4, Celeron D, Pentium Extreme Edition, Pentium D 64-bit Processors Compatibility Yes Processor Socket LGA775 Socket
Compatible Processors Pentium 4, Celeron D, Pentium Extreme Edition, Pentium D 64-bit Processors Compatibility Yes Processor Socket LGA775 Socket

The motherboard for the dc7600 has an Intel LGA775 processor socket. However, not all LGA775 processors are compatible with the motherboard. For the small form factor, the following CPUs are supported: Intel Celeron D Processors:
Intel Celeron D 331 Processor (2.66-GHz, 256K L2 cache, 533-MHz FSB) , Intel Celeron D 336 Processor (2.80-GHz, 256K L2 cache, 533-MHz FSB) , Intel Celeron D 346 Processor (3.06-GHz, 256K L2 cache, 533-MHz FSB)
Intel Pentium 4 Processors with HT Technology:
Intel Pentium 4 521 Processor (2.8-GHz, 1-MB L2 cache, 800-MHz FSB) , Intel Pentium 4 524 Processor (3.06-GHz, 1-MB L2 cache, 533-MHz FSB) , Intel Pentium 4 541 Processor (3.2-GHz, 1-MB L2 cache, 800-MHz FSB), Intel Pentium 4 620 Processor (2.8-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 630 Processor (3.0-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 631 Processor (3.0-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 640 Processor (3.2-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 641 Processor (3.2-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 650 Processor (3.4-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 651 Processor (3.4-GHz, 2-MB L2 cache, 800-MHz FSB), Intel Pentium 4 661 Processor (3.6-GHz, 2-MB L2 cache, 800-MHz FSB) or
Intel Pentium D Dual Core Processors:
Intel Pentium D 805 Dual Core Processor (2.66-GHz, 2x1MB L2 cache, 533-MHz FSB), Intel Pentium D 820 Dual Core Processor (2.8-GHz, 2x1MB L2 cache, 800-MHz FSB), Intel Pentium D 915 Dual Core Processor (2.8-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 925 Dual Core Processor (3.0-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 930 Dual Core Processor (3.0-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 940 Dual Core Processor (3.2-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 945 Dual Core Processor (3.4-GHz, 2x2MB L2 cache, 800-MHz FSB), Intel Pentium D 950 Dual Core Processor (3.4-GHz, 2x2MB L2 cache, 800 MHz FSB)

Unfortunately, these are old processors and I don't see any available new. Newegg.com lists a couple available as refurbished. You may be better off getting a new computer with either a Intel I3 or current AMD processor.

I wish that I had better news for you.

Cindy Wells
(do not attempt to use a CPU that your motherboard doesn't support. It probably won't boot.)

the prcessory varies with clock speed and the speed for example a pentium 1 processor has a spped of 100mmx with aclock speed just 66mhz now the pentium 4 processor uses a spped of 3.0 ghz with a clock speed of 800mhz so there is deferance as the clock speed increase the speed of the computer increases

All your answers in once convenient page:
http://en.wikipedia.org/wiki/List_of_Intel_Pentium_microprocessors

Hi,
Compatible Processors Pentium 4, Celeron D, Pentium Extreme Edition, Pentium D 64-bit Processors Compatibility Yes Processor Socket LGA775 Socket
Compatible Processors Pentium 4, Celeron D, Pentium Extreme Edition, Pentium D 64-bit Processors Compatibility Yes Processor Socket LGA775 Socket
Compatible Processors Pentium 4, Celeron D, Pentium Extreme Edition, Pentium D 64-bit Processors Compatibility Yes Processor Socket LGA775 Socket
Compatible Processors Pentium 4, Celeron D, Pentium Extreme Edition, Pentium D 64-bit Processors Compatibility Yes Processor Socket LGA775 Socket


Seems that you need Socket LGA775,and CPU: Pentium 4, CeleronD, Pentium D, Pentium Extreme Edition. For more Details go here:

http://www.google.com/products/catalog?hl=en&q=p5nd2-sli+motherboard&cid=13414569805758042878&os=tech-specs

Intel® Core™2 Duo processor (with up to 800 MHz FSB)
Intel® Pentium® Dual-Core processor
Intel® Pentium® D processor
Intel® Pentium® 4 processor
Intel® Celeron® D processor
Intel® Celeron® processor
RICHARDM69

According to IBM's documentation the ThinkPad 390 will only officially support three processors:

Intel Pentium MMX Processor 233 MHz, L2 cache
Intel Pentium II Processor 233 MHz, L2 cache
Intel Pentium II Processor 266 MHz, L2 cache

Hope this helps

To upgrade from a Pentium 3 to a Pentium 4 processor, you would have to replace the motherboard. The Pentium 4 processor has more pins on it than the Pentium 3 and would not sit in a Pentium 3 motherboard.

Hi ryonsdad,

I checked out the Latitude D610 laptop, and you'll be glad to know that you have the following processor upgrade options:

1.) Pentium M 780 Processor - 2.26 GHz, 2MB, 780, Pentium-M Dothan, 533FSB (fastest upgrade)
2.) Pentium M 770 Processor - 2.13 GHz, 2MB, 770, Pentium-M Dothan, 533FSB
3.) Pentium M 760 Processor - 2.0 GHz, 2MB, 760, Pentium-M Dothan, 533FSB
4.) Pentium M 750 Processor - 1.86 GHz, 2MB, 750, Pentium-M Dothan, 533FSB
5.) Pentium M 740 Processor - 1.73 GHz, 2MB, 740, Pentium-M Dothan, 533FSB (slowest upgrade)

You can buy these processors from Dell Spareparts or otherwise from a 3rd party store.

Hope this helps!

Peace! :)

Usually you can use Northwood-core CPU-s on mobos with Willamatte-core CPU. But is important (exept core) - FSB support of your new processor. Which model of your CPU? What the mainboard use (model)?