For DOOM timedemo 3, I get 14.1 fps. For your system with the same graphics card, you get DLC-40 = 11.3 fps, and DRx2 = 12.6 fps. With VLB graphics, you got DLC-40 = 12.85 fps, or DRx2 = 16.4 fps. Why is the performance increase for the DRx2, when using VLB, much greater than when the DLC uses the VLB graphics?
The higher the CPU, the more severe the performance bottleneck due to the ISA graphics card bottleneck.
What is your CPU score from Nortin Sysinfo? Mine is 65.6. For some reason, the number is not showing on the graph from your screenshot.
Score on nortion Sysinfo is 93.1. but this is incorrect.
If use FSB 25/33 DX2/DX4/5x86 CPU on OPTI 495SX/SLC Chipset Motherboard. Norton sysinfo 6.0 or highter version outputs a different value than the actual one.
if use DX(25,33) or FSB 40 CPU(486DX2-80,486DX4-120 and etc). output correct value.
The solution is to use version 4.5 of Norton Sysinfo.
486DRx2-66's CPU Score is 127.0
For Quake, I get 2.7 fps. I did not see your ISA scores for Quake in your bar chart, but found it pretty interesting that the DRx2-66 w/33 MHz FPU only scored 2.6 fps. But once you clock doubled your FPU, you get quite a boost percent-wise, to 3.0 fps.
Maybe caused OPTI 495SX/SLC Chipset's poor memory performance.
For cachechk, my L2 cache is at 33.5 MB/s, which is slightly slower than your 34.7 fps. For RAM read speed, I got 16.1 MB/s, while yours is only 9.4 MB/s. Is that correct? The worst speed I've seen was around 14 MB/s. Could you report the cachechk RAM write results? e.g. cachechk -w -d -t4
my cachechk is can't run with option -d.
i ran cachechk -w -t4 , and cachechk -t4
The best memory read times tend to come from SiS Rabbit-based boards, at 23.6 MB/s.
My Motherboard's Memory performance is so poor..
Did you try your DRx2 at 2x40 MHz?
Appear POST Screen. and Freeze during boot.
Based on your results, it seems like the DRx2 might be worth it if your board has VLB. In my mind, though, if a board has a 486 CPU socket, then using one of these PGA-132 CPU upgrades looses some of its prestige. Does your board have a 486 and 386 CPU socket, or just a 386 CPU socket?
I also have a DRx2-66 and would some day like to compare it against the 486SXL-40 on my Mark V Baby Screamer. I would also like to attempt 486SXL2-66 operation with lots of cooling. An SXL2 at 2x25 MHz just isn't that exciting for me.
have both socket.