The reference board from VIA with the P4X400 chipset does not run with DDR400.
Even the slowest timing doesn't help: the VIA P4X400 still didn't work with DDR400 memory.
About two weeks ago, we had planned to test the VIA P4X400 chipset, which is also supposed to support DDR400. However, during the test, problems emerged with a memory clock of 200 MHz: even in the slowest CL3 mode, the P4X400 board was not able to boot, and the system hung with the port 80 error "C1" (memory error). So we weren't able to test the P4X400 at 200 MHz memory clock (DDR400). The Soltek SL-85ERV brings us new hope, and we expect to take a close look at it in one of the up-coming tests.
Northbridge of the VIA P4X400 chipset
Southbridge VT8235 of the VIA P4X400 chipset, with USB 2.0 support.
Summary
- SiS 648: Alternative To Intel 845G
- Block Diagram Of The SiS 648
- Top-Notch Functions: DDR400, AGP 8x And USB 2.0
- SiS 648 For The Mass Market: The First Motherboard From Shuttle
- Premiere With Shuttle: Serial ATA Interface
- DDR400 Comparison: VIA P4X400 Not Able To Run
- Comparison: Chipsets For Pentium 4
- Test Setup And Details
- Benchmarks Under Windows 2000
- OpenGL Performance: Quake 3 Arena
- MP3 Audio Encoding: Lame MP3
- 3D Rendering Performance: SPECviewperf 7.0
- Archiving: WinACE 2.11
- SiSoft Sandra 2002 Benchmarks: CPU And Multimedia
- 3D Rendering: Cinema 4D XL 7
- Conclusion: SiS 648 Surprises With DDR400 And AGP 8x
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