Pentium D or Core 2 Duo?

nhannon9 · Jun 23, 2013

Hi there guys,

I own a Dell OptiPlex GX620 that currently runs a Pentium D 925 @ 3.00 GHz with 4MB of L2 cache. I have been looking all around and wanted to upgrade to a Core 2 Duo. Now before you tell me I'm a few generations behind, I understand, but I don't mind. My Dell does all I need it to do, but I need it faster. I have been looking at Dell's documentation on the GX620 and I know that the motherboard has a FSB cap of 800 MHz, which means I'll need one of the 800 MHz Core 2 Duos. I found a Core 2 Duo E4700 on eBay which clocks in @ 2.6 GHz whth 2MB of L2 cache. It also has a 800 MHz FSB, which is what my Pentium D currently has. On all the Dell documentation I've seen, it doesn't state any support anywhere for the C2D, but I don't see why it wouldn't work. My question is, is it worth the money to upgrade to a C2D? Will the C2D preform any faster than the Pentium D? Also, do you think the C2D would have any problems in my GX620? I've updated the BIOS and all. Last question, would the C2D run hotter or cooler than my Pentium D.

I've brought up a comparison chart between the C2D E4700 and the Pentium D 925 on Intel's ARK.

http://ark.intel.com/compare/27517,34441

Thanks so much guys..

-Nick

J_E_D_70 · Jun 23, 2013

http://en.community.dell.com/support-forums/desktop/f/3514/t/19329296.aspx

Did you read thru all this and the links? Someone claims to be running a core2 but it's likely out of spec. I'd err on the side of caution, call Dell, and go with the fastest they recommend.

Just having the right socket and bus isn't enough - the bios has to support it.

Tom Tancredi · Jun 23, 2013

Basically the answers are follows: YES there is a SIGNIFICANT difference between a C2D CPU and required pins/chipset to make it work and a Pentium D. So no you can't just swap out just because FSB is the same.

Cost effectiveness: ABSOLUTELY NOT. This is when systems were just coming under $2000 and heading to the 'magic' $1000 range, we are talking today at Walmart right now a i3Core for only $250 and in laptop form (you can simply plug in your USB keyboard, mouse and vga to a laptop just as if it was a desktop box).

Realistically the 'faster' you will get out of a modern 'disposable' PC (as they are looked upon) is extremely significant, as well as less expensive then buying parts piecemeal, even old parts like what your looking for, which may or may not make it for another bunch of years anyway

g-unit1111 · Jun 23, 2013

Tom Tancredi :

I agree that it's not cost effective. Also the Pentium D and Core 2 Duo CPUs in question have long since ceased production. You can find them on eBay but they won't be cheap.

Kisianik · Jun 24, 2013

I don't know what you people are talking about - GX620 supports up to Pentium D 960 and this is it! There is no Core 2 Duo of any kind, I seen one person mentioning that he had E4700 or something similar installed, but when asked to provide proof, something like screen shot, he just disappeared.
So, Pentium D 960 and no more.
If someone would attempt to claim otherwise - provide a proof of working PC, give me a link.

Compare to your current setup this is very minimal improvement for significant amount of money and headache, getting something newer would be strongly advisable!

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Pentium D or Core 2 Duo?

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