Paul Goyette wrote: > Well, after a long absence, I rejoined the distributed.net RC5-72 > contest today, installed their client software, and ran some quick > benchmarks. The results were rather surprising to me... > > First, here's the cpu information for each machine... > > Machine #1 - AMD Athlon 64 X2 Dual Core processor > cpu0 at mainbus0 apid 0: AMD 686-class, 2812MHz, id 0x40f33 > cpu1 at mainbus0 apid 1: AMD 686-class, 2812MHz, id 0x40f33 > > Machine #2 - AMD Athlon 64 X2 Dual Core processor > cpu0 at mainbus0 apid 0: AMD 686-class, 2412MHz, id 0x40fb2 > cpu0: AMD PowerNow! Technology 2400 MHz > cpu0: available frequencies (Mhz): 1000 1800 2000 2200 2400 > cpu1 at mainbus0 apid 1: AMD 686-class, 2412MHz, id 0x40fb2 > > Machine #3 - AMD Phenom processor > cpu0 at mainbus0 apid 0: AMD 686-class, 2310MHz, id 0x100f22 > cpu0: erratum 298 present > cpu0: erratum 298 present > cpu0: erratum 309 present > cpu0: WARNING: errata present, BIOS upgrade may be > cpu0: WARNING: necessary to ensure reliable operation > cpu1 at mainbus0 apid 1: AMD 686-class, 2310MHz, id 0x100f22 > cpu2 at mainbus0 apid 2: AMD 686-class, 2310MHz, id 0x100f22 > cpu3 at mainbus0 apid 3: AMD 686-class, 2310MHz, id 0x100f22 > > Machine #4 - Intel Core 2/Xeon > cpu0 at mainbus0 apid 0: Intel 686-class, 2400MHz, id 0x6fb > cpu1 at mainbus0 apid 3: Intel 686-class, 2400MHz, id 0x6fb > cpu2 at mainbus0 apid 2: Intel 686-class, 2400MHz, id 0x6fb > cpu3 at mainbus0 apid 1: Intel 686-class, 2400MHz, id 0x6fb > > > Test results. There are 5 different "benchmark" tests in the software, > and all provide similar results. > > Test # Machine 1 Machine 2 Machine 3 Machine 4 > 0 10.62 9.07 4.37 7.77 > 1 11.21 9.57 4.61 8.04 > 2 2.75 2.34 1.12 2.20 > 3 2.80 2.39 1.13 2.19 > 4 2.78 2.36 1.12 2.18 > > The numbers in the above table are "Millions of keys processed per > second", so a larger value is better. And the numbers are all on a > single core. > > The first surprise: the 2.3GHz Phenom (#3) was less than half as > capable as either 2.8GHz or the 2.4GHz Athlon 64 machines #1 and #2. Phailnom? :-) > The second surprise: the Intel Core 2 at 2.4GHz is about 20% slower than > the Athlon running at the same 2.4GHz speed. > > Are these numbers surprising to anyone else?
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