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upgrade P4 1.75V cpu with 1.5V cpu

Forum CPU & Components : CPUs - upgrade P4 1.75V cpu with 1.5V cpu

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dancro   06-25-2008 at 05:38:15 PM

What happens if I put a 1.5V Pentium 4 into a motherboard that is currently running a 1.75V cpu? Is this the same as overclocking? Is it feasible?

I want to upgrade the CPU in a Dell Dimension 4300S desktop currently running a pentium 4, 1.6Ghz, 400 FSB, 1.75V processor. I have successfully done this before using a 2.0Ghz cpu but am now unable to find another 2.0 processor with 1.75V. I have found a 1.5V cpu, and even a 2.2Ghz cpu with 1.5V.

Thank you for any advice or ideas about this.
Dan

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KyleSTL   06-25-2008 at 05:55:57 PM
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It'll more than likely work, since the motherboard reads the voltage ID of the processor and supplies the necessary operating voltage. Don't expect wonders, though 2.2Ghz is only 38% faster than 1.6Ghz, and both of which are pretty slow. If you're getting the upgrade very cheap, it's worth it for the short term, but you'll more than likely need to upgrade soon as a computer of that vintage is unable to perform certain tasks a modern computer can do with ease.

------------------------------ Lian-Li PC-7B | XClio Greatpower 550W | P4 3.2 Prescott SL7E5 | Scythe Ninja
2GB DDR400 Corsair VS (4*512) | eVGA nVidia GF 7600GS AGP vmod 1.46/1.91 OCd 759/907
WD 160GB & 640GB SATA
WinXP MCE 2004
 Reply to KyleSTL
Grebuloner   06-25-2008 at 06:09:33 PM
- 0 +

Before you make the switch, make sure you update the BIOS to the latest version. That 1.6 P4 is a lot older than the 2.2 P4 you're replacing it with and support may not have been included in Dell's original BIOS. The chipset (845) and socket (478) are definitely compatible. You can even use a 533 FSB chip as well.

------------------------------ Why buy one when you can have two at twice the price?
 Reply to Grebuloner
dancro   06-25-2008 at 08:11:50 PM
- 0 +

Thank you for the quick responses. I am encouraged by both of them.

Grebuloner, when I put a 533 cpu into the machine it beeped at me. I don't remember the number of beeps but it may have been two. Could that be because I didn't update BIOS?

Thanks again for your help.

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