"Victor de Hollander"
Aug 2011
the Netherlands
2^{3}×3×7^{2} Posts

CPU: Intel Core i56500 @3.3Ghz
Memory: 2x8GB DDR42133
Mobo: MSI H110MECO
Code:
Intel(R) Core(TM) i56500 CPU @ 3.20GHz
CPU speed: 3279.11 MHz, 4 cores
CPU features: Prefetchw, SSE, SSE2, SSE4, AVX, AVX2, FMA
L1 cache size: 32 KB
L2 cache size: 256 KB, L3 cache size: 6 MB
L1 cache line size: 64 bytes
L2 cache line size: 64 bytes
TLBS: 64
Machine topology as determined by hwloc library:
Machine#0 (total=14968420KB, Backend=Windows, hwlocVersion=1.11.9, ProcessName=prime95.exe)
NUMANode#0 (local=14968420KB, total=14968420KB)
Package#0 (CPUVendor=GenuineIntel, CPUFamilyNumber=6, CPUModelNumber=94, CPUModel="Intel(R) Core(TM) i56500 CPU @ 3.20GHz", CPUStepping=3)
L3 (size=6144KB, linesize=64, ways=12, Inclusive=1)
L2 (size=256KB, linesize=64, ways=4, Inclusive=0)
L1d (size=32KB, linesize=64, ways=8, Inclusive=0)
Core (cpuset: 0x00000001)
PU#0 (cpuset: 0x00000001)
L2 (size=256KB, linesize=64, ways=4, Inclusive=0)
L1d (size=32KB, linesize=64, ways=8, Inclusive=0)
Core (cpuset: 0x00000002)
PU#1 (cpuset: 0x00000002)
L2 (size=256KB, linesize=64, ways=4, Inclusive=0)
L1d (size=32KB, linesize=64, ways=8, Inclusive=0)
Core (cpuset: 0x00000004)
PU#2 (cpuset: 0x00000004)
L2 (size=256KB, linesize=64, ways=4, Inclusive=0)
L1d (size=32KB, linesize=64, ways=8, Inclusive=0)
Core (cpuset: 0x00000008)
PU#3 (cpuset: 0x00000008)
Prime95 64bit version 29.4, RdtscTiming=1
Timings for 2048K FFT length (4 cores, 1 worker): 2.87 ms. Throughput: 348.96 iter/sec.
Timings for 2048K FFT length (4 cores, 4 workers): 12.41, 12.33, 12.38, 12.46 ms. Throughput: 322.77 iter/sec.
Timings for 2304K FFT length (4 cores, 1 worker): 3.24 ms. Throughput: 308.64 iter/sec.
Timings for 2304K FFT length (4 cores, 4 workers): 13.96, 13.88, 13.76, 13.83 ms. Throughput: 288.67 iter/sec.
Timings for 2400K FFT length (4 cores, 1 worker): 3.45 ms. Throughput: 289.71 iter/sec.
Timings for 2400K FFT length (4 cores, 4 workers): 14.77, 14.44, 14.49, 14.63 ms. Throughput: 274.31 iter/sec.
Timings for 2560K FFT length (4 cores, 1 worker): 3.65 ms. Throughput: 274.08 iter/sec.
Timings for 2560K FFT length (4 cores, 4 workers): 15.62, 15.71, 15.58, 15.69 ms. Throughput: 255.62 iter/sec.
Timings for 2688K FFT length (4 cores, 1 worker): 3.88 ms. Throughput: 257.87 iter/sec.
Timings for 2688K FFT length (4 cores, 4 workers): 16.46, 16.27, 16.41, 16.29 ms. Throughput: 244.60 iter/sec.
Timings for 2880K FFT length (4 cores, 1 worker): 4.21 ms. Throughput: 237.54 iter/sec.
Timings for 2880K FFT length (4 cores, 4 workers): 17.59, 17.73, 17.52, 17.49 ms. Throughput: 227.48 iter/sec.
Timings for 3072K FFT length (4 cores, 1 worker): 4.37 ms. Throughput: 228.73 iter/sec.
Timings for 3072K FFT length (4 cores, 4 workers): 18.96, 18.61, 18.94, 19.00 ms. Throughput: 211.88 iter/sec.
Timings for 3200K FFT length (4 cores, 1 worker): 4.74 ms. Throughput: 210.98 iter/sec.
Timings for 3200K FFT length (4 cores, 4 workers): 19.87, 19.79, 19.83, 19.75 ms. Throughput: 201.91 iter/sec.
Timings for 3360K FFT length (4 cores, 1 worker): 5.12 ms. Throughput: 195.13 iter/sec.
Timings for 3360K FFT length (4 cores, 4 workers): 20.87, 20.87, 20.83, 20.84 ms. Throughput: 191.80 iter/sec.
Timings for 3456K FFT length (4 cores, 1 worker): 5.09 ms. Throughput: 196.44 iter/sec.
Timings for 3456K FFT length (4 cores, 4 workers): 21.56, 21.37, 21.30, 21.46 ms. Throughput: 186.72 iter/sec.
Timings for 3584K FFT length (4 cores, 1 worker): 5.28 ms. Throughput: 189.55 iter/sec.
Timings for 3584K FFT length (4 cores, 4 workers): 22.57, 22.18, 22.41, 22.11 ms. Throughput: 179.23 iter/sec.
Timings for 3840K FFT length (4 cores, 1 worker): 5.71 ms. Throughput: 175.01 iter/sec.
Timings for 3840K FFT length (4 cores, 4 workers): 24.02, 23.87, 23.76, 24.08 ms. Throughput: 167.15 iter/sec.
Timings for 4096K FFT length (4 cores, 1 worker): 6.06 ms. Throughput: 164.89 iter/sec.
Timings for 4096K FFT length (4 cores, 4 workers): 25.63, 25.35, 25.72, 25.35 ms. Throughput: 156.79 iter/sec.
Timings for 4480K FFT length (4 cores, 1 worker): 6.82 ms. Throughput: 146.55 iter/sec.
Timings for 4480K FFT length (4 cores, 4 workers): 28.06, 28.09, 28.02, 28.39 ms. Throughput: 142.14 iter/sec.
Timings for 4608K FFT length (4 cores, 1 worker): 6.89 ms. Throughput: 145.13 iter/sec.
Timings for 4608K FFT length (4 cores, 4 workers): 28.61, 28.60, 28.88, 28.89 ms. Throughput: 139.16 iter/sec.
Timings for 4800K FFT length (4 cores, 1 worker): 7.37 ms. Throughput: 135.67 iter/sec.
Timings for 4800K FFT length (4 cores, 4 workers): 31.28, 30.41, 30.00, 29.62 ms. Throughput: 131.95 iter/sec.
Timings for 5120K FFT length (4 cores, 1 worker): 7.76 ms. Throughput: 128.86 iter/sec.
Timings for 5120K FFT length (4 cores, 4 workers): 32.27, 32.17, 31.72, 32.45 ms. Throughput: 124.42 iter/sec.
Timings for 5376K FFT length (4 cores, 1 worker): 8.48 ms. Throughput: 117.95 iter/sec.
Timings for 5376K FFT length (4 cores, 4 workers): 33.89, 33.84, 33.47, 33.89 ms. Throughput: 118.44 iter/sec.
Timings for 5760K FFT length (4 cores, 1 worker): 9.07 ms. Throughput: 110.29 iter/sec.
Timings for 5760K FFT length (4 cores, 4 workers): 37.29, 37.40, 35.05, 37.95 ms. Throughput: 108.44 iter/sec.
Timings for 6144K FFT length (4 cores, 1 worker): 9.51 ms. Throughput: 105.18 iter/sec.
Timings for 6144K FFT length (4 cores, 4 workers): 39.48, 40.29, 37.66, 39.16 ms. Throughput: 102.24 iter/sec.
Timings for 6400K FFT length (4 cores, 1 worker): 10.04 ms. Throughput: 99.64 iter/sec.
Timings for 6400K FFT length (4 cores, 4 workers): 40.67, 40.67, 41.47, 40.65 ms. Throughput: 97.90 iter/sec.
Timings for 6720K FFT length (4 cores, 1 worker): 10.66 ms. Throughput: 93.83 iter/sec.
Timings for 6720K FFT length (4 cores, 4 workers): 43.60, 43.34, 42.20, 42.71 ms. Throughput: 93.12 iter/sec.
Timings for 6912K FFT length (4 cores, 1 worker): 11.01 ms. Throughput: 90.84 iter/sec.
Timings for 6912K FFT length (4 cores, 4 workers): 45.53, 45.45, 43.88, 43.03 ms. Throughput: 89.99 iter/sec.
Timings for 7168K FFT length (4 cores, 1 worker): 11.20 ms. Throughput: 89.28 iter/sec.
Timings for 7168K FFT length (4 cores, 4 workers): 45.86, 45.78, 45.86, 45.78 ms. Throughput: 87.30 iter/sec.
Timings for 7680K FFT length (4 cores, 1 worker): 11.98 ms. Throughput: 83.44 iter/sec.
Timings for 7680K FFT length (4 cores, 4 workers): 50.12, 50.72, 49.10, 47.77 ms. Throughput: 80.97 iter/sec.
Timings for 8064K FFT length (4 cores, 1 worker): 12.98 ms. Throughput: 77.01 iter/sec.
Timings for 8064K FFT length (4 cores, 4 workers): 51.71, 53.23, 51.69, 52.00 ms. Throughput: 76.70 iter/sec.
Timings for 8192K FFT length (4 cores, 1 worker): 13.11 ms. Throughput: 76.26 iter/sec.
Timings for 8192K FFT length (4 cores, 4 workers): 53.35, 53.09, 53.06, 53.53 ms. Throughput: 75.11 iter/sec.
Code:
Prime95 64bit version 29.4, RdtscTiming=1
Timings for 2560K FFT length (1 core, 1 worker): 10.90 ms. Throughput: 91.76 iter/sec.
Timings for 2560K FFT length (2 cores, 1 worker): 5.70 ms. Throughput: 175.50 iter/sec.
Timings for 2560K FFT length (3 cores, 1 worker): 4.07 ms. Throughput: 245.69 iter/sec.
Timings for 2560K FFT length (4 cores, 1 worker): 3.63 ms. Throughput: 275.22 iter/sec.
1st core: 91.76
2nd core: +83.74
3rd core: +70.19
4th core: +29.53
I'm probably going to disable turboboost as it looks like it is pretty much memory bottlenecked (going from 3 to 4 cores only adds 30 iters/sec.
