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Help with CPU upgrade for Dell OptiPlex GX620, please!

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January 20, 2007 5:11:07 AM

I want to upgrade my OptiPlex GX620 (BIOS A11, Intel 945 Express chipset) from the current Pentium 4 630 (sSpec SL8Q7) to Pentium D 930 (sSpec SL94R).
Does anyone have experience with an upgrade of this kind?
Also, what's the difference between 4MB (2x2MB) cache and 4MB cache in the Pentium D 9xx family? See, for example, sSpec SL94R versus sSpec SL95X here:
http://processorfinder.intel.com/List.aspx?ProcFam=2112
Thanks for any help and enlightenment!
August 24, 2007 11:39:19 PM

swap out the mobo

use a low end asus mobo with a low end c2d - most likely if you stick with intel chip set the hard drive will fire right up

dell makes there mobo so you may loose some funky onboard conector?
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August 25, 2007 6:03:54 PM

dragonsprayer said:
swap out the mobo

use a low end asus mobo with a low end c2d - most likely if you stick with intel chip set the hard drive will fire right up

dell makes there mobo so you may loose some funky onboard conector?



The Dell OS will trigger Product Activation when ran on a non-dell mobo. It checks itself each time the OS boots to see if it is a Dell product or not.

Besides that, the GX620 tower is BTX. No such thing as a cheap BTX board.
November 9, 2008 8:34:20 PM

I have a very similar question. I have a Dell Optiplex GX620 with the Dell 0HH807 motherboard. From what I have been able to determine, this board is using the Intel i945G/GZ rev. A2 chipset. I have updated the bios to the A11 revision.

I cannot tell for sure if I can put an Intel E4700 processor in this board. I know that the socket size (LGA775) and FSB speed (800MHz) are OK. I believe I can put a 65nm cpu in there. The other thing I have been told, though, is to check the voltage capabilities.

I want to use the E4700, but will put in an Intel Pentium D 940 if I can't put in the E4700. Here is what I have found out about the voltage:
- The E4700 V core is specified at 0.85 - 1.5
- The 940 V core is specified at 1.2 - 1.3375
If I am reading the i945G/GZ spec correctly, the core power voltage is 1.5v, with a max of 1.65v.

So, can I safely use the E4700 cpu here? I cannot find anyone on the Net who has definitely done this.

I'm new at this, and don't know a lot about it, and would appreciate any help or advice!
December 19, 2008 1:48:36 AM

No you will fry the CPU.
Stick with a 900 series and you will be ok
A 960 still expensive or a cheaper 950 would be a good upgrade.
December 19, 2008 5:27:29 AM

or start a new thread rather than hijack this one

am I being rude - ? not what I mean. nobody will see your issue. others might not respond to you.

apologies to op.
December 19, 2008 5:22:20 PM

Thanks, tester_21. I ended up going with a 940 CPU. I didn't want to take a chance on the E4700 without being sure.
!