I have a custom built computer that I built in 2005 with a P4 3.0 ghz cpu (which is about the only thing i have failed to upgrade since I bought it). I also have an XPS 420 with the core 2 quad Q6600. I wanted to swap each cpu with the other so that my main computer (the custom built one) would have the better processor of the two.
I put the XPS processor in my custom computer changed the FSB settings to OC and everything worked fine.
Put the old P4 in the Dell and all I get is a solid amber light on the power button and the main fan blowing. Its doesnt get any further than that.
both cpu's are lga 775 ect and fit just fine. I cleaned off the old and reapplied the thermal paste etc.
So my actual question is. Will the Dell computer not boot with the older cpu?
Thanks for your time.
What is the sSpec number of the P4, 3.0GHz processor?
If my answer was helpful, please use the 'Did this answer the question' and click: YesForum Member since 2001I am not employed by Dell
Best I could do is a link to the product its self as that is all the information I have.
And thanks again.
XPS 420 PC's support only 65nm processors, according to link you posted, the P4, 3.0GHz processor is 90nm and not compatible.
Thank you for your speedy reply.
Before I swap the processors back I want to know if I bought a cheap 65nm LGA 775 cpu would it work in the Dell?
This is ultimately the kids computer and they dont need nearly the processing power I do. They surf the net and play a couple games but nothing real cpu intensive, mostly graphics intensive.
Here is a listing of processors known to be compatable with the 420
Installing the processorThe Dell heatsink will
work fine. Clean the old thermal paste off with alcohol, pick up some
Arctic Silver 5 thermal paste, and apply it to the processor after you
install it per the Arctic Silver instructions. Be very careful of the
socket when you remove the old processor and install the new one. It is
extremely easy to bend one of the tiny little pins, all 775 of them. If
you bend one, you likely will not be able to straighten it, and you
will need to replace your motherboard. Make sure you update the bios to
the latest version BEFORE you switch the processor.HU587 Conroe Kit, E4300, 1.80G, 2MB, 800FSB, L2DX483 Conroe Kit, E4400, 2.00G, 2MB, 800FSB, L2DX485 Conroe Kit, E6320, 1.86G, 4MB, 1066FSB, B2DX484 Conroe Kit, E6420, 2.13G, 4MB, 1066FSB, B2MP160 Conroe Kit, E6550, 2.33G, 4MB, 1333FSBMP162 Conroe Kit, E6750, 2.66G, 4MB, 1333FSB, G0MP628 Conroe Kit, E6850, 3.00G, 4MB, 1333FSB, G0WM543 Conroe XE Kit, X6800, 2.93G, 4MB, 1066FSB, B2MP626 Kentsfield Quad Core Kit, Q6600, 2.40G, 8MB, 1066FSB, G0MP627 Kentsfield Quad Core Kit, Q6700, 2.66G, 8MB, 1066FSB, G0UP673 Kentsfield Quad Core Kit, QX6700, 2.66G, 8MB, 1066FSB, B3RX656 Kentsfield Quad Core Kit, QX6800, 2.93G, 8MB, 1066FSB, G0PW016 Kentsfield Quad Core Kit, QX6850, 3.00G, 8MB, 1333FSB, G0C863D Yorkfield Quad Core Kit, QX9300, 2.5G, 6MB, 1333FSB, M1C864D Yorkfield Quad Core Kit, Q9450, 2.66G, 12MB, 1333FSB, C1C865D Yorkfield Quad Core Kit, Q9550, 2.83G, 12MB, 1333FSB, C1C299C Yorkfield Quad Core Kit, QX9650, 3.0G, 12MB, 1333FSB, C0H786G Yorkfield Quad Core kit, QX9650, 3.0G, 12MB, 1333FSB, C1X198G Wolfdale Dual Core kit, E7200, 2.53, 3MB, FD, 65W,M0Y932C Wolfdale Dual Core Kit, E8200, 2.66G, 6MB, 1333FSB, 65W, C0K905F Wolfdale Dual Core Kit, E8300, 2.83G, 6MB, 1333FSB, 65W, C0Y935C Wolfdale Dual Core Kit, E8400, 3.0G, 6MB, 1333FSB, 65W, C0Y934C Wolfdale Dual Core Kit, E8500, 3.16G, 6MB, 1333FSB, 65W, C0
Home Built Sandy Bridge P8P67 i7 2600k @ 4.5 GHz 8gigs GSkill Ripjaws. Corsair 800D Case and AX1200 Ps X-Fi Titanium Fatal1ty pro PCIe Sound CardDell Studio XPS 1645 Window 10 Pro
Forum member since 2003
Known to be compatible meaning that is all thats been tested or you know that the list is it?
The processor I have a link to doesnt fall into this list that I can see. Is there some under lying reason it wouldnt work?
Bios support which is the most important other than the socket.and chipset design
You are better off, looking for a used compatible Intel Socket LGA775 Core 2 Duo processor on eBay, like the one shown HERE
is a 45nm processor compatible with the xps 420?
Maybe, read the discussion HERE