翻出舊的Pentium Pro拿來做做測試，使用80M RAM(72pin)
Intel Pentium Pro processor
CPU speed: 179.63 MHz
CPU features: RDTSC, CMOV
L1 cache size: 8 KB
L2 cache size: 256 KB
L1 cache line size: 32 bytes
L2 cache line size: 32 bytes
TLBS: 64
Prime95 version 23.7, RdtscTiming=1
Best time for 384K FFT length: 500.600 ms.
Best time for 448K FFT length: 591.702 ms.
Best time for 512K FFT length: 664.355 ms.
Best time for 640K FFT length: 886.440 ms.
Best time for 768K FFT length: 1080.228 ms.
Best time for 896K FFT length: 1282.843 ms.
Best time for 1024K FFT length: 1446.099 ms.
Best time for 1280K FFT length: 1865.736 ms.
Best time for 1536K FFT length: 2227.386 ms.
Best time for 1792K FFT length: 2669.855 ms.
Best time for 2048K FFT length: 2936.301 ms.