With the release of BIOS version P19, the microcode for the Intel?? Pentium?? 4 and Intel?? Celeron?? processors based on the 0.18 micron process has been removed due to BIOS space constraints. However, the BIOS microcode support was retained through BIOS version P18.
If you are still using the above processors, you should NOT update to BIOS version P19. The complete version number is VA84510A.86A.0052.P19.
- The 0.18 micron Intel?? Pentium?? 4 processor range is between 1.30 GHz and 2.0 GHz, with 400 MHz system bus and 256 KB L2 cache size.
- The 0.18 micron Intel?? Celeron?? processor range is between 1.70 GHz and 1.8 GHz, with 400 MHz system bus and 128 KB L2 cache size.
To identify the processor type on your system, you may download an Intel Processor Identification utility. If the utility identifies your processor to be within the range stated above, it is advised that the system BIOS remain at P18 and below.