At one time, the Asus P5G-MX motherboard was designed for economical buyers. Its main advantages were the support of Intel’s Core 2 Duo and Dual Core processors and the presence of a built-in GMA 950 video card.Unfortunately, the ASUS P5G-MX motherboard only has a 1066 MHz system bus. At the time of release, the ASUS P5G-MX was the cheapest option from ASUS.
ASUS P5G-MX motherboard specification:
| Manufacturer | ASUS |
| Model | P5G-MX |
| Chipset | Intel® 945GC Intel ICH7 |
| Processor connector | LGA775 |
| Supported processors | Core 2 Duo / Dual Core / Pentium D / Pentium 4 / Celeron D |
| System bus, MHz | 1066/800 MHz |
| Memory in use | 2 x DIMM, Max. 4 GB, DDR2 667/533 Non-ECC, Un-buffered Memory |
Intel Pentium Dual-Core E5800 processor features:
| Name | Pentium Dual-Core E5800 |
|---|---|
| Kernel | Wolfdale |
| Number of cores | 2 |
| Connector | LGA 775 |
| Instruction set | RISC, IA32, XD bit, MMX, EM64T, SSE, SSE2, Supplemental SSE3 |
| Other features | EIST (VT R0) |
| Number of transistors, million | 228 |
| Техпроцес, нм | 45 high-k |
| Crystal area, sq. mm | 82 |
| Supply voltage, B | 0.85 ~ 1.3625 |
| TDP, W | 65 |
| Limit temperature, ° C | 74.1 |
| Frequency, MHz | 3200 |
| cache L1, KB | 32 x 2 |
| cache L2, KB | 2048 |
| FSB / HT / QPI | 800 |
| Multiplier | 16 |
Asus P5G-MX + Dual-Core E5800
The official website states that the Asus P5G-MX only supports Conroe and Conroe-L processors. But in practice it is known that the P5G-MX runs on a dual-core Pentium Dual-Core E5800 processor with a Wolfdale-3M core. Only then the BIOS swears at an unknown processor. Its CPUID 1067A is missing in the latest firmware version of the BIOS. You can also install dual-core Intel Xeon processors in this motherboard.
If you want to install 45nm Dual-Core or Xeon – you should upgrade the motherboard BIOS to a BIOS with added CPU microcodes.
The mod contains microcodes only for 45 / 65nm Core / Xeon. You can download the bios on the Asus P5G-MX here.
There are two folders in the archive, ORIG and 771.
- ORIG is the original image from the manufacturer’s website, it is recommended to sew it first and check the stability of the system with it.
- 771 – image with added / replaced microcodes.
As a result, the entire Dual-Core / Core 2 Duo / Xeon line will run on the Asus P5G-MX.