[rc5] Chip speeds
msissom at dnaent.com
Wed Aug 20 16:12:50 EDT 1997
At 02:47 PM 8/20/97 -0400, you wrote:
>Just a quick question regarding chip speeds. I've been looking on the
>benchmarks page and I noticed that the K5 and 6x86 chips seems to get
>phenomenally good scores compared to the "bigger" chips like the K6 and
>Pentium 200, 166, etc.
>Can someone tell me if this is true, or just an artifact of the bench-
It's true. Those chips were optimized for integer performance
and that is what rc5 is all about. No floating point, no i/o or
memory bandwidth, just integer mips. Which of course, is what
95% of the rest of the software world is about also...
>Note the price to speed ratio's here (Canadian $):
>CPU MHz Cost 2.004 speed Ratio (kkeys/$)
>K5 133 $102 320,000 3.14
>K5 166 $133 370,000 2.78
>6x86 P166+ 133 $82 279,000 3.40
>6x86 P200+ 150 $97 304,000 3.13
>Pentium 133 $142 165,000 1.16 <-sucks!
>Pentium 200 $305 265,000 1.15 <-sucks!
>Pentium MMX 233 $530 305,000 0.58 <-really sucks!
>K6 233 $438 360,000 0.82 <-really sucks!
>Could anyone out there with a K5 or a 6x86 system get back to me on this?
At home the 6x86 pr166+ churns 270+Kk/sec under linux.
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