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benchmark result compared to 68k https://powerdeveloper.org/forums/viewtopic.php?f=61&t=1534 |
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Author: | gunnar [ Tue Apr 15, 2008 2:16 am ] |
Post subject: | benchmark result compared to 68k |
Some people have asked me to compare the first benchmark results of the V4m with other 680x0 CPUs. Here are the result that I have from the Coldfire V4m-Dev system and various 68k legacy systems. Code:
Chip 68030 68040 68060 68060 54455
Notes:Clock MHz 50 40 60 80 266 Addi 20.5 34.8 110.2 148.1 251 Shift 11.3 18.9 111.1 148.3 251 Mix 20.4 34.9 110.2 147.9 439 Mul 1.8 3.7 30.1 40.4 67 bra_u 4.2 8.7 10.2 13.7 40 bra_p 5.1 9.5 38.2 51.3 117 Bsr 3.1 3.8 4.8 6.4 13 Read8 3.9 9.6 28 26.5 81.8 Read32 12.6 31.1 60.9 41.2 121.3 Read32x4B 20.3 43.6 60.9 41.2 121.3 Write8 5.1 9.8 35.1 27.3 13.2 Write32 20.5 29.5 48.5 27.3 51 Write32x4B 22.2 28.4 48.5 27.3 185.2 Copy8 6 13.7 32.9 29.3 23.3 Copy32 23.7 37.2 58.8 34.5 67.7 Copy32x4B 22 31.1 53 32.8 121.3 a) Because the code for micro benchmarks is small, the relative small caches of the 68030 are not a disadvantage. b) I believe that the cache of the V4m was only set to "write though mode"-- please mind this when you look at the relative weak memory write performance. |
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