Comparative features table
| Manufacturer | Asus | EPoX | MSI |
| Model | P4C800 Deluxe | EP-4PC3A+ | 875P NEO FISR2 |
| Socket | 478 | 478 | 478 |
| Clock Speed w/3GHz | 3030.27 | 3021.2 | 3014.5 |
| NB Cooling | Passive | Passive | Active |
| DIMM slots | 4 | 4 | 4 |
| Maximum RAM | 4GB | 4GB | 4GB |
| AGP rate | 8x | 8x | 8x |
| PAT | Yes | Yes | Yes |
| ECC Support | Yes | Yes | Yes |
| PCI Slots | 5 32-bit | 5 32-bit | 5-32-bit |
| Southbridge | Intel ICH5 (EB) | Intel ICH5/R (ER) | Intel ICH5/R (ER) |
| SB RAID support | None | S-ATA RAID0 | S-ATA RAID0 |
| Additional RAID | Promise PDC20378 | Highpoint HPT374 | Promise PDC20378 |
| RAID format | RAID 0 (S-ATA or P-ATA or S-ATA + P-ATA), RAID 1, RAID 0+1 | P-ATA RAID0, P-ATA RAID1, P-ATA RAID0+1 | RAID 0 (S-ATA or P-ATA or S-ATA + P-ATA), RAID 1, RAID 0+1 |
| ICH5 P-ATA | 2 x ATA100 | 2 x ATA100 | 2 x ATA100 |
| ICH5 S-ATA | 2 x S-ATA 150 | 2 x S-ATA 150 | 2 x S-ATA 150 |
| RAID ATA | 1 x ATA133 | 4 x ATA133 | 1 x ATA133 |
| RAID S-ATA | 2 x S-ATA 150 | None | 2 x S-ATA 150 |
| Firewire | VIA VT6307 | - |
VIA VT6306 |
| No. of ports | 2 | - |
3 |
| Sound | AD1985 v2.3 | CMI 9739A v2.2 | Realtek ALC650 v2.2 |
| Channel support | 6 | 6 | 6 |
| S/PDIF support | Coaxial-Out | - | Coax / Optical-Out |
| LAN | 3COM 940 (PCI) | BroadCOM 5507 (PCI) | Intel 547EI (CSA) |
| USB2.0 ports onboard | 4 | 4 | 6 |
| Additional support | 0 | 0 | 2 |
| Fan Headers | 3 | 3 | 2 |
| Form Factor | 305*245 | 305*245 | 305*245 |
| CPU Voltage | 1.475v - 1.7v | 1.45v - 1.6v | 1.55v - 2.30v |
| VDIMM Voltage | 2.55v - 2.85v | 2.60 - 3.30v | 2.50 - 3.30v |
| VAGP Voltage | 1.50 - 1.80v | 1.50 - 2.20v | 1.50 - 2.10v |
| Voltage fluctuation | Medium - Good | Medium - Good | Poor - Medium |
| FSB CPUs | 100 - 400 | 100 - 350 | 200 - 500 |
| CPU:RAM ratios at 200FSB | 1:1, 5:4. 6:4 | 1:1, 5:4. 6:4 | 3:4, 4:5, 1:1, 5:4, 6:4 |