Old P4 3.0 GHZ in Dell XPS 420

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Old P4 3.0 GHZ in Dell XPS 420

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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.

All Replies
  • reckoF  

    What is the sSpec number of the P4, 3.0GHz processor?

    Bev.

     

    If my answer was helpful, please use the 'Did this answer the question' and click: Yes
    Forum Member since 2001
    I 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.

    http://www.newegg.com/Product/Product.aspx?Item=N82E16819116198

     

    And thanks again.

  • reckoF

     XPS 420 PC's support only 65nm processors, according to link you posted,  the P4, 3.0GHz processor is 90nm and not compatible.

    Bev. 

     

    If my answer was helpful, please use the 'Did this answer the question' and click: Yes
    Forum Member since 2001
    I am not employed by Dell

  • 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?

    http://www.newegg.com/Product/Product.aspx?Item=N82E16819116075

    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.

    Thank you.


  • Here is a listing of processors known to be compatable with the 420

     

    Installing the processor
    The 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, L2
    DX483 Conroe Kit, E4400, 2.00G, 2MB, 800FSB, L2
    DX485 Conroe Kit, E6320, 1.86G, 4MB, 1066FSB, B2
    DX484 Conroe Kit, E6420, 2.13G, 4MB, 1066FSB, B2
    MP160 Conroe Kit, E6550, 2.33G, 4MB, 1333FSB
    MP162 Conroe Kit, E6750, 2.66G, 4MB, 1333FSB, G0
    MP628 Conroe Kit, E6850, 3.00G, 4MB, 1333FSB, G0
    WM543 Conroe XE Kit, X6800, 2.93G, 4MB, 1066FSB, B2
    MP626 Kentsfield Quad Core Kit, Q6600, 2.40G, 8MB, 1066FSB, G0
    MP627 Kentsfield Quad Core Kit, Q6700, 2.66G, 8MB, 1066FSB, G0
    UP673 Kentsfield Quad Core Kit, QX6700, 2.66G, 8MB, 1066FSB, B3
    RX656 Kentsfield Quad Core Kit, QX6800, 2.93G, 8MB, 1066FSB, G0
    PW016 Kentsfield Quad Core Kit, QX6850, 3.00G, 8MB, 1333FSB, G0
    C863D Yorkfield Quad Core Kit, QX9300, 2.5G, 6MB, 1333FSB, M1
    C864D Yorkfield Quad Core Kit, Q9450, 2.66G, 12MB, 1333FSB, C1
    C865D Yorkfield Quad Core Kit, Q9550, 2.83G, 12MB, 1333FSB, C1
    C299C Yorkfield Quad Core Kit, QX9650, 3.0G, 12MB, 1333FSB, C0
    H786G Yorkfield Quad Core kit, QX9650, 3.0G, 12MB, 1333FSB, C1
    X198G Wolfdale Dual Core kit, E7200, 2.53, 3MB, FD, 65W,M0
    Y932C Wolfdale Dual Core Kit, E8200, 2.66G, 6MB, 1333FSB, 65W, C0
    K905F Wolfdale Dual Core Kit, E8300, 2.83G, 6MB, 1333FSB, 65W, C0
    Y935C Wolfdale Dual Core Kit, E8400, 3.0G, 6MB, 1333FSB, 65W, C0
    Y934C Wolfdale Dual Core Kit, E8500, 3.16G, 6MB, 1333FSB, 65W, C0

     HomeBuilt SandyBridge P8P67 i7 2600k @ 4.5 ghz 8gigs GSkill Ripjaws. Corsair 800D Case and AX1200 Ps X-Fi Titanium Fatal1ty pro PCIe Sound Card
    Dell Studio XPS 1645  Window 7 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

     HomeBuilt SandyBridge P8P67 i7 2600k @ 4.5 ghz 8gigs GSkill Ripjaws. Corsair 800D Case and AX1200 Ps X-Fi Titanium Fatal1ty pro PCIe Sound Card
    Dell Studio XPS 1645  Window 7 Pro

    Forum member since 2003

  • reckoF

    You are better off, looking for a used compatible Intel Socket LGA775 Core 2 Duo processor on eBay, like the one shown  HERE

    Bev.

     

    If my answer was helpful, please use the 'Did this answer the question' and click: Yes
    Forum Member since 2001
    I am not employed by Dell

  • is a 45nm processor compatible with the xps 420?

  • pumpfake93

    Maybe, read the discussion HERE

    Bev.

     

    If my answer was helpful, please use the 'Did this answer the question' and click: Yes
    Forum Member since 2001
    I am not employed by Dell