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January 3rd, 2012 11:00

SX280 - Maxmium confirmed working CPU upgrade

I just recently acquired a used SX280 from an off-lease reseller - so recently, in fact, that I haven't received it yet! Of course, I'm already looking into potential hardware upgrades.

A preliminary search on both these forums and the rest of the Internet indicates that these are compatible with the x64 series of Intel Prescott 2M LGA 775 Pentium 4 CPUs, and they can use 2GB DDR2 desktop DIMMs, for a total of 4GB RAM (in a 64-bit OS). I saw that at least one owner was able to drop in a 3.4GHz 640 successfully. I also saw that, in October 2010, a Dell rep indicated that Dell had successfully tested at least one of Intel's 3.8 GHz P4 CPUs in this model - however, that posting did not specify which 3.8GHz CPU was compatible.

Before I go purchasing a processor upgrade for this machine, can someone please confirm whether or not Intel's x64 3.8GHz Pentium 4 is compatible? This would be either the HT 670 or 672. If it is confirmed (not just speculated or assumed, please) that this CPU is incompatible, I would be interested in knowing what is the fastest x64 drop-in replacement processor for this machine.

Thank you!

Community Manager

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56.9K Posts

January 5th, 2012 08:00

I do not see a 3.80GHz CPU on the SX280 validated parts page? Hopefully a customer will post saying what 3.80GHz CPU did work.

D7459 Prescott P4 520, 2.80GHz, 800FSB, 1M, Socket-T
RG427 Prescott P4 64bit 521, 2.80GHz, 800FSB, 1MB, Socket-T
D7460 Prescott P4 530, 3.00GHz, 800FSB, 1M, Socket-T
D7462 Prescott P4 540, 3.20GHz, 800FSB, 1M, Socket-T
N8590 Prescott P4 540, 3.20GHz, 800FSB, 1MB, Socket-T
DD519 Prescott P4 64bit 541, 3.20GHz, 800FSB, 1MB, Socket-T
M8964 Prescott P4 550, 3.40GHz, 800FSB, 1MB, Socket-T

127 Posts

January 7th, 2012 09:00

Do any of the Prescott 2M CPUs work? I've seen postings in this forum from people using certain models successfully. What about Cedar Mill?

Community Manager

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56.9K Posts

January 7th, 2012 21:00

I cannot say since we never tested them. Other users will have to attest to them.

June 26th, 2012 14:00

I got the same little shoe box running on a P4 530 3.00ghz, and wanted to upgrade to the P4 670 3.80ghz which is pretty cheap by now, $20!, my question is since the 530 runs around 84watts and the 670 runs at 115watts, is there going to be any problems such frying the mobo,or the cpu itself? i know heat is a big issue since it doesnt have a cpu fan, just the copper heatsink and the front and rear fans. Would i be better of with the P4 650 that runs at 3.40ghz and have the same wattage as the p4 530, the 650 its pretty darn cheap @ $10?

List of processors :

  Intel Pentium 4 640   1 / 2 3.2 GHz 2 MB 84 Watt NX, 64-bit, HT, SS

  Intel Pentium 4 560 / 560J 1 / 2 3.6 GHz 1 MB 115 Watt NX, 64-bit, HT, SS

  Intel Pentium 4 561 1 / 2 3.6 GHz 1 MB 115 Watt NX, 64-bit, HT, SS

  Intel Pentium 4 650 1 / 2 3.4 GHz 2 MB 84 Watt NX, 64-bit, HT, SS

  Intel Pentium 4 570 / 570J 1 / 2 3.8 GHz 1 MB 115 Watt NX, 64-bit, HT, SS

  Intel Pentium 4 571 1 / 2 3.8 GHz 1 MB 115 Watt NX, 64-bit, HT, SS

  Intel Pentium 4 660 1 / 2 3.6 GHz 2 MB 115 Watt NX, 64-bit, HT, SS

  Intel Pentium 4 662 1 / 2 3.6 GHz 2 MB 115 Watt NX, 64-bit, HT, VT, SS

  Intel Pentium 4 662 (P) 1 / 2 3.6 GHz 2 MB 84 Watt NX, 64-bit, HT, VT, SS

  Intel Pentium 4 672 1 / 2 3.8 GHz 2 MB 115 Watt NX, 64-bit, HT, VT, SS

1 Message

March 13th, 2015 18:00

I just installed 

Intel Prescott LGA 775 Pentium 4 P4 670 3.8 Ghz 2M Cache 800 Mhz FSB SL7Z3
Item number:251870503574
Price:$14.99
Computer said it was NOT compatible.........
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