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Asked: 2021-11-04T14:12:40+00:00 In:

Link To Reliable Download Source For PB Desktop BIOS Update

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I’m looking at upgrading the CPU to P4 HT 670 SL8PY 3.8 GHz / 2M / 800 / 04B.

Does anyone:

1. Know the best BIOS update for this mobo/CPU?

2. Have a link to a reliable BIOS download site where it is available?

3. Know of any potential compatibility problems?

Main details of current setup:

Model
Packard Bell iMedia 5070
Summary
Operating System
Windows 7 Professional 64-bit SP1
CPU
Intel Pentium 4 519K SL8JA
Cores 1
Threads 1
Code Name Prescott
Package Socket 775 LGA
Technology 90nm
Specification Intel Pentium 4 CPU 3.06GHz
Family F
Extended Family F
Model 4
Extended Model 4
Stepping 1
Revision E0
Instructions MMX, SSE, SSE2, SSE3, Intel 64, NX
Virtualization Not supported
Hyperthreading Not supported
RAM
4.00GB Dual-Channel DDR @ 133MHz (3-3-3-8)
Motherboard
NEC COMPUTERS INTERNATIONAL GA-8I915PM (Socket 775)
Graphics
VA703-3Series (1280×1024@60Hz)
ATI Radeon HD 5450 1GB
Storage
111GB Seagate ST3120026A ATA Device (ATA)
Optical Drives
PHILIPS DVDR1628P1 ATA Device
Audio
High Definition Audio Device

Any helpful info much appreciated.

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    1 Answer

    1. Did you try the CPU yet without making any changes?

      Reliable BIOS? There’s only one place – Packard Bell. You could take a chance & try a Gigabyte BIOS but if it doesn’t work, you may end up bricking the board in which case it will have to be replaced.

      https://www.bios-mods.com/forum/Thr…

      http://www.packardbell.com/pb/en/GB…

      You currently have a 533MHz FSB CPU. According to the following manual, your motherboard does support 800MHz FSB.

      https://jira.reactos.org/secure/att…

      You’re already running the wrong RAM for your current CPU so if you upgrade to an 800MHz FSB CPU, you should also upgrade to DDR400 RAM (ideally it should be DDR533). The reason being is that the architecture used in the P4 is inefficient. To help makeup for the inefficiency, the CPU:DRAM frequency ratio should be either 3:4, 4:5, or 5:6 rather than the “normal” ratio of 1:1 which is considered optimal for most other CPUs. In other words:

      400MHz FSB should use DDR266 (3:4 ratio)
      533MHz FSB should use DDR333 (4:5 ratio)
      667MHz FSB should use DDR400 (5:6 ratio)
      800MHz FSB should use DDR533 (3:4 ratio)

      You have 533MHz FSB with DDR266 which is 1:1. If you switch to an 800MHz FSB CPU & keep your current RAM, that ratio would be 3:2.

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