CompuServe Messages

#Prod'ness of Multitask'

    11-Dec-86 23:37:55
Fm: Tom Cattrall 72767,622
To: Bela Lubkin/Sysop 76703,3015
Bela– Gee, I thought I had you all educated about the 386 vs. 020 and then you go say something like that! 🙂 If you remember from a while back, the IEEE Micro article has both dynamic and static ram test results. When using fast external memory there are no wait states and the effect is the same as an external cache memory. With the fast static memory the 386 is still somewhat slower for equal clocks. Substituting full speed 020's gives much more speed yet. Finally, the 68030 is predicted to be 2x a 68020. To summarize using the quicksort benchmark (the only real program in the list) gives the following table showing speed normalized to the 80386 being 1.00. The 680×0 times are with cache enabled. cpu speed static(45ns) dynamic(150ns) 80286 (16) 0.85 0.98 80386 (16) 1.00 1.00 68020 (16) 1.66 2.49 68020 (25) 2.59 3.90 68030 (25) 5.18 7.80 (predicted) Besides being a year or 2 later than the 68020, the 80386 is also definitely slower. Perhaps the 486 will catch up with the 68020. I lost your address. If you let me know I'll definitely copy this stuff and send it to you. Can't have you going around spreading these vicious rumors. 🙂 Tom