Reply 40 of 63, by vetz
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- l33t
VLB was certainly not designed for 40mhz or 50mhz FSB. VLB was one of the reasons DX40 and DX50 never really caught on and why the DX2-66 became legendary.
From the Redhill CPU guide:
Actually, VESA had a lot to do with the market failure of the DX-50. It was hard to make an ISA system run reliably at 50MHz, and almost impossible with VESA. PCI wasn't out then, and when it did come out it was dreadfully unreliable for the first year or so. By the time of the Pentium 75, 50MHz and even 66MHz bus speed was easily achievable: in the time of the 486DX-50 though, 40MHz was tricky stuff and 50MHz boards were a nightmare.
My Asus VL/I-486SV2GX4 (rev 2.0) is based on the SIS 85C471/407 chipset. It seems there are some kind of error when doing memory readings using the POD as both sysinfo and cachechk is giving strange readings. Here are cachechk:
It must have been a mistake by me with not setting the Cache Write Cycle to 2T. I changed it and I had no stability issues. PCPBench increased from 11.2 to 11.3 and Doom went from 55.4 to 56.7. Other tests remained at the same results. I've also updated my BIOS picture above with a screencap (and not one from my phone).
Link to BIOS: http://www.elhvb.com/mobokive/archive/asus/48 … x4/sv2g0402.zip