dell optiplex gx280 cpu upgrade

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fallenh3art

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I was wondering if its possible to upgrade my Intel Pentium 4 3.20
GHz cpu with a Intel Core 2 Quad Q9705. If not can someone please explain why they wont. also its a mid size tower with a 550w power source (if that matters)

thank you.
 
Solution
Kisianik
Before anyone made any terrible mistakes STOP.

According to official Dell those are the processors supported by GX280:

D7459 Prescott P4 Kit, 520, 2.8Ghz, 800FSB, 1MB
DD517 Prescott P4 64bit Kit, 521, 2.8Ghz, 800FSB, 1MB
D7460 Prescott P4 Kit, 530, 3.0Ghz, 800FSB, 1MB
DD519 Prescott P4 64bit Kit, 541, 3.2Ghz, 800FSB, 1MB
D7462 Prescott P4 Kit, 540, 3.2Ghz, 800FSB, 1MB
D7463 Prescott P4 Kit, 550, 3.4Ghz, 800FSB, 1MB
M8964 Prescott P4 Kit, 550, 3.4Ghz, 800FSB, 1MB
D7464 Prescott P4 Kit, 560, 3.6Ghz, 800FSB, 1MB
M8965 Prescott P4 Kit, 570, 3.8Ghz, 800FSB, 1MB

Dell engineers its BIOS, and BIOS not updated once new Dell model is released, and so on. Even GX620 is not compatible with Core 2 Duo, and it is many generations ahead of GX280...
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Eximo

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If you can open your computer up and get the exact model of the motherboard we can provide a more specific answer.

In general yes, you can as long as the wattage the motherboard can supply matchs the TPD of the chip you are inserting. BIOS updates may be required to support some newer chips.
 
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fallenh3art

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the motherboard is a foxconn LS-36
 
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SilverWolf9000

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I am afraid that Pentium is about as good as it gets for your system. The Foxconn LS-36 is really old and underwhelming. If I were you, I'd save up money for a better computer. What is your budget? That system is very, very old I would imagine. It MAY be able to handle your Core 2 Quad (same socket, 775), but I would not recommend upgrading it if you plan on doing anything demanding with your pc. Anyway, in the end all we need to know is your budget.
 
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Eximo

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Well I was wrong, Dell has several revisions of that motherboard for different models.

They all appear to be Socket 478 and not LGA775 so you already have about the best chip for that setup.

You would be better served by upgrading the motherboard chip and ram or buying a new off the shelf system.
 
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SilverWolf9000

SilverWolf9000

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Oh really? I didn't know bout the different revisions... Way to kick us in the balls, Dell! xD Good find. I think this is probably the best answer.
 
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photonboy

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Sockets continue to change as new CPU's require different pin-outs to the motherboard for things such as new RAM control etc.

Not sure why the Dell comment, they simply sell PC's with the latest hardware.

You're trying to upgrade a really old PC, so it's not surprising that parts don't exist. If you want to "blame" anyone then blame Intel. They've changed Sockets quite frequently whereas AMD has kept their AM3/AM3+ compatibility a while now.

Be aware there are other things you can upgrade depending on what you're trying to do on your PC. For example, if it just feels sluggish then you can reinstall Windows (if you have the disc) to an SSD, or even a Seagate SSHD (hybrid drive) like THIS one:
http://www.newegg.com/Product/Product.aspx?Item=N82E16822178339

The above SSHD is 7mm thick and probably comes with a 2mm spacer to fit laptops. The spacer isn't needed in a desktop though it's a 2.5mm drive so you may need a 2.5" to 3.5" mounting tray.

CLONING:
You could hookup the SSHD, then use cloning software to clone your current OS over to this SSHD. Things would feel less sluggish. About the best speed to value you're going to get for $80.
 
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SilverWolf9000

SilverWolf9000

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The Dell comment is because he is trying to upgrade a Dell with a Foxconn LS-36, and Dell has different revisions of the same model, thus causing confusion.
 
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Eximo

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Yeah, they put out different revisions based on the case. And even different chipsets based on model gx260, gx270, gx280 all have different boards. Just a quick search reveals people complaining endlessly about buying motherboards off of ebay and not physically fitting in their computer. Different I/O all and standoff placement, all kinds of stuff.
 
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fallenh3art

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here are my processors specs.

Processor 1 ID = 0
Number of cores 1 (max 1)
Number of threads 2 (max 2)
Name Intel Pentium 4 540
Codename Prescott
Specification Intel(R) Pentium(R) 4 CPU 3.20GHz
Package (platform ID) Socket 775 LGA (0x4)
CPUID F.4.1
Extended CPUID F.4
Core Stepping E0
Technology 90 nm
Core Speed 3192.0 MHz
Multiplier x Bus Speed 16.0 x 199.5 MHz
Rated Bus speed 798.0 MHz
Stock frequency 3200 MHz
Instructions sets MMX, SSE, SSE2, SSE3
L1 Data cache 16 KBytes, 8-way set associative, 64-byte line size
Trace cache 12 Kuops, 8-way set associative
L2 cache 1024 KBytes, 8-way set associative, 64-byte line size
FID/VID Control no

thanks for hanging in ther guys :)
 
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Eximo

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fallenh3art

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i cant really find anything else :/ besides
Motherboard
Dell Inc.
Model: 0H7276
chipset: Intel i915P/i915G rev. B1
Southbridge: Intel 82801FB (ICH6) rev. 03

but ive tryed looking up the model and i couldnt find anything
 
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fallenh3art

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none of the 478s look right the 775 looks exactally like mine mine have the lil slits cun in it so u know which way it goes and the 478s dont have that
 
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Eximo

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That chipset seems to be paired most often with LGA775, so it might work. Problem is that the Prescott chips are 84W and the Q9705, (and the other Q9xxx series) you want to put in are 95W, it is probably not going to be supported.

Everything on the i915p chipset only claims support for Pentiums and Celerons, I don't think it is worth the gamble.
 
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fallenh3art

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what is i went to Intel Core 2 Duo E8600 65w?
 
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Eximo

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That is a big maybe, while the TDP is in range the FSB doesn't quite match up either with the Core 2 Duo 1066 or Core 2 Quads 1333, while your board is running 800Mhz (Really 400, 533, 667).

Mind you I am going off of chipset datasheets only as I cannot locate a full spec sheet for any Foxconn LS-36 board, but I am fairly confident it will boot up and tell you unsupported processor, or this processor will not run at full speed.
 
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Kisianik

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Before anyone made any terrible mistakes STOP.

According to official Dell those are the processors supported by GX280:

D7459 Prescott P4 Kit, 520, 2.8Ghz, 800FSB, 1MB
DD517 Prescott P4 64bit Kit, 521, 2.8Ghz, 800FSB, 1MB
D7460 Prescott P4 Kit, 530, 3.0Ghz, 800FSB, 1MB
DD519 Prescott P4 64bit Kit, 541, 3.2Ghz, 800FSB, 1MB
D7462 Prescott P4 Kit, 540, 3.2Ghz, 800FSB, 1MB
D7463 Prescott P4 Kit, 550, 3.4Ghz, 800FSB, 1MB
M8964 Prescott P4 Kit, 550, 3.4Ghz, 800FSB, 1MB
D7464 Prescott P4 Kit, 560, 3.6Ghz, 800FSB, 1MB
M8965 Prescott P4 Kit, 570, 3.8Ghz, 800FSB, 1MB

Dell engineers its BIOS, and BIOS not updated once new Dell model is released, and so on. Even GX620 is not compatible with Core 2 Duo, and it is many generations ahead of GX280!
So stop dreaming about placing anything above mentioned CPUs in this machine, you have been warned.

If someone thinks otherwise, provide proof like screen shot or similar, general Intel rules do not apply to Dell all the time, only within specific time frame.
 
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chriss000

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It is very unlikely that mother board will support anything other than a very early pentium D dual core, and as i have mentioned before without being absolutely sure, and probably flashing the bios, putting one in will probably brick the board. There is no way it will run c2d.
 
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fallenh3art

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so at this point its buy a new computer. *sigh* Oh well, ill have to live with it for a while.
 
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