Something is puzzling me. I have a Dual 1.25 GHz PowerPC G4, with 1 MB L3 Cache per processor, 768 MB DDR SDRAM of memory, running under Mac OS X 10.4.1. I dowloaded yesterday the 6.12.35 version of Boinc Manager (Darwin 8.11.0) and started to run SETI@home.
I must say I was disappointed in terms of speed. Indeed, each processor, running at 100%, is taking some 45 hours (!) to process a block of data... However, when I run a CPU I get the following results:
- 797 floating point MIPS (Whetstone) per CPU
- 2437 integer MIPS (Dhrystone) per CPU
It is not an awesome speed, I agree, but I've seen worse...
I also have a more modern machine, a portable PC with a GenuineIntel Intel(R) Core(TM) i7 CPU Q 720 @ 1.60GHz [Family 6 Model 30 Stepping 5](8 processors) running SETI@home. For this machine the benchmark results are:
- 1492 floating point MIPS (Whetstone) per CPU
- 7285 integer MIPS (Dhrystone) per CPU
Only the double per CPU as for the Mac, but in this case, each processor finishes a block of SETI data in approximately 2:30h (the NVIDIA GPU takes around 40 minutes).
So, anybody can tell me what's wrong with my Mac?
Thanks in advance,