Below are Stream rates for the original iMac, and a PMac 7300/200 (604e).
Apple has increased its memory bandwidth by 2.7x since the Feb 97 intro of
the 7300/200:
Stream average (PPC604 opt)
PMac 7300 200 MHz 604e 50 MHz bus 82 MBps
iMac 233 MHz G3 67 MHz Bus 133 MBps
Blue G3 400 MHz G3 100 MHz Bus 225 MBps (from previous posting)
The fastest PC in the Streeam web site
(http://www.cs.virginia.edu/stream/) listing is a "Generic_440BX_400",
with an average bandwidth of 323 MBps.
iMac, 67 MHz Bus, 233 MHz G3, 116 MHz, 0.5 MB cache, 160 MB memory
STREAM PPC604 OPT
-------------------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Copy: 139.7502 0.0462 0.0458 0.0469
Scale: 135.9331 0.0473 0.0471 0.0475
Add: 129.8877 0.0742 0.0739 0.0744
Triad: 126.7544 0.0760 0.0757 0.0762
STREAM PPC601 OPT
-------------------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Copy: 134.9841 0.0478 0.0474 0.0484
Scale: 126.9136 0.0507 0.0504 0.0509
Add: 126.7946 0.0760 0.0757 0.0762
Triad: 126.1979 0.0762 0.0761 0.0765
STREAM PPC UNROLL
-------------------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Copy: 115.7826 0.0556 0.0553 0.0563
Scale: 114.4738 0.0560 0.0559 0.0563
Add: 120.7805 0.0797 0.0795 0.0798
Triad: 119.3050 0.0806 0.0805 0.0809
STREAM PPC BASE
-------------------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Copy: 115.6696 0.0562 0.0553 0.0581
Scale: 114.5639 0.0566 0.0559 0.0585
Add: 120.9205 0.0802 0.0794 0.0831
Triad: 120.4638 0.0807 0.0797 0.0835
PMac 7300, 50 MHz Bus, 200 MHz 604e, 1 MB cache, 288 MB memory
STREAM PPC604 OPT
-------------------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Copy: 84.7222 0.0766 0.0755 0.0844
Scale: 72.0859 0.0891 0.0888 0.0894
Add: 91.3772 0.1053 0.1051 0.1056
Triad: 81.5779 0.1180 0.1177 0.1184
STREAM PPC601 OPT
-------------------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Copy: 83.6787 0.0777 0.0765 0.0854
Scale: 71.1981 0.0901 0.0899 0.0904
Add: 90.4517 0.1063 0.1061 0.1065
Triad: 79.9480 0.1202 0.1201 0.1206
STREAM PPC UNROLL
-------------------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Copy: 62.9803 0.1027 0.1016 0.1110
Scale: 54.2387 0.1183 0.1180 0.1185
Add: 74.1301 0.1297 0.1295 0.1299
Triad: 64.7384 0.1484 0.1483 0.1486
STREAM PPC BASE
-------------------------------------------------------------
Function Rate (MB/s) RMS time Min time Max time
Copy: 64.8062 0.1006 0.0988 0.1143
Scale: 54.2630 0.1188 0.1179 0.1232
Add: 74.9216 0.1291 0.1281 0.1323
Triad: 65.3315 0.1479 0.1469 0.1547
This archive was generated by hypermail 2b29 : Tue Apr 18 2000 - 05:23:08 CDT