APPLE G5 CASE REPURPO SERIAL

Joswiak also promised that the tweaks made to the PowerPC 970 processor in the G5 will make it into shipping systems, so the tests better reflect the experience the average user will get. He also claimed the scores were higher under Linux - the OS used in the published benchmarks - than under Windows. Joswiak noted that GCC is probably more optimised for x86 than PowerPC, having been available on the Intel platform for longer. As we noted in our report yesterday, VeriTest used GCC on both platforms to make the comparison as close as possible. Joswiak admitted that the Dell machines would have scored higher if VeriTest had used Intel's own compilers rather than GCC 3.3, but equally the G5 would have rated higher if Apple had offered alternative PowerPC compilers. We have to admit we made that mistake, assuming that the flags would distinguish between SSE and SSE 2. Claims that it didn't were based on a mis-reading of the compile flags listed at the end of the VeriTest report. Joswiak also said that the test conducted by VeriTest did make use of the Pentium 4's SSE2 SIMD engine for floating-point operations.

APPLE G5 CASE REPURPO SERIAL

'The tests show that CPU 2000 and other serial (non-multithreaded) applications do not benefit from Hyper-Threading and may, in fact, incur a performance penalty because of resource contention issues,' the report concludes.

Apple g5 case repurpo