Date: Fri, 20 Aug 1993 09:26:38 From: Per Lindqvist To: djgpp AT sun DOT soe DOT clarkson DOT edu Subject: Video Benchmark Some of the benchmark results really makes one wonder how performance can differ so much. First, here is the benchmark result for a 386/40 With an ATI Ultra Plus, ISA bus at 13MHz. CPU & Video Benchmarks 1.0 (C) 1993 DJ Delorie. Distribute freely. CPU: 386, 40 MHz Video: ATIUltraPlus All results are Kbytes per second, s=system RAM, v=video RAM, mode 0x13 bits s->s s->v v->s v->v s-> v-> ->s ->v 8 5,386 2,307 1,365 965 6,665 1,412 6,305 2,608 waits 3.4 13.3 25.3 37.4 0.0 22.3 1.3 10.3 8 /8 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 16 9,634 4,613 2,679 1,930 13,331 2,825 13,289 5,217 waits 4.3 13.3 25.8 37.4 0.0 22.3 1.0 10.3 16/8 1.7 1.9 1.9 2.0 2.0 2.0 2.1 2.0 32 18,307 6,039 3,357 2,298 26,662 3,496 26,313 6,520 waits 4.7 22.5 43.6 65.6 0.0 39.7 1.0 19.5 32/8 3.3 2.6 2.4 2.3 4.0 2.4 4.1 2.5 Looking at the s->s column, these results place the 386/40 at a better performance than some 486 processors, even 66DX2 ones. But a group of 486 machines also have up to twice the s->s speed. The s->v of 6MB/s puts the machine/card just below the 486dx66 machines (with local bus?). Running the ISA bus at 13MHz seems to do wonders for this benchmarks performance. Some machines appears to be lousy performers. For example, one 486sx/25 appears to have higher performance in s->s/16 than s->s/32. Could someone write something about how the different CPUs should perform. For example, what should the s->s speed be for 0WS for a 386 cpu, a 486 CPU and a 486DX2 CPU? How is it with the theoretical speed for the ISA bus, and the LB? -- -- Per Lindqvist pgd AT shakti DOT bbt DOT se