Multi-Core Scaling: Intel Core i7 920

Multi-threaded Pi Benchmark: y-cruncher v0.4.2

By Alexander J. Yee

(Last updated: August 15, 2009)

 

 

 

Benchmark Settings

Mode: Ram Only
Algorithm: Chudnovsky Formula
Priority: High

1 thread
  • Hyper-Threading disabled via BIOS
  • y-cruncher set to use 1 thread
2 threads
  • Hyper-Threading disabled via BIOS
  • Processor Affinity set to allow only 2 cores
  • y-cruncher set to use 2 threads
4 threads
  • Hyper-Threading disabled via BIOS
  • y-cruncher set to use 4 threads
8 threads
  • Hyper-Threading enabled
  • y-cruncher set to use 8 threads

Benchmarks

All times in seconds. All times include base-conversions.

Processor(s):
2.67 GHz Intel Core i7 - 920 Bloomsfield
Memory:
12 GB DDR3 - 1066 MHz (triple channel)
Courtesy Of:
Alexander Yee
Version:
v0.4.2.7437 (x64 SSE3)
Decimal Digits
1 thread
2 threads
4 threads
8 threads
2-t scaling
4-t scaling
8-t scaling
10,000
 0.049 0.049 0.051 0.054 1.000 0.961 0.907
12,000
 0.051 0.051 0.053 0.055 1.000 0.962 0.927
15,000
 0.052 0.052 0.054 0.056 1.000 0.963 0.929
20,000
 0.056 0.055 0.057 0.060 1.018 0.982 0.933
25,000
 0.060 0.059 0.061 0.063 1.017 0.984 0.952
40,000
 0.069 0.068 0.069 0.072 1.015 1.000 0.958
50,000
 0.076 0.075 0.076 0.079 1.013 1.000 0.962
75,000
 0.090 0.086 0.087 0.090 1.047 1.034 1.000
100,000
 0.109 0.102 0.102 0.105 1.069 1.069 1.038
120,000
 0.124 0.113 0.112 0.114 1.097 1.107 1.088
150,000
 0.145 0.127 0.126 0.127 1.142 1.151 1.142
200,000
 0.190 0.153 0.145 0.147 1.242 1.310 1.293
250,000
 0.242 0.182 0.166 0.168 1.330 1.458 1.440
400,000
 0.390 0.273 0.231 0.232 1.429 1.688 1.681
500,000
 0.516 0.352 0.302 0.308 1.466 1.709 1.675
750,000
 0.834 0.537 0.426 0.431 1.553 1.958 1.935
1,000,000
 1.150 0.701 0.525 0.536 1.641 2.190 2.146
1,200,000
 1.406 0.844 0.627 0.634 1.666 2.242 2.218
1,500,000
 1.898 1.101 0.787 0.787 1.724 2.412 2.387
2,000,000
 2.620 1.479 1.023 1.012 1.771 2.561 2.589
2,500,000
 3.353 1.870 1.268 1.256 1.793 2.644 2.670
4,000,000
 5.976 3.170 2.047 1.981 1.885 2.919 3.017
5,000,000
 7.644 4.004 2.546 2.461 1.909 3.002 3.106
7,500,000
 12.567 6.508 3.745 3.807 1.931 3.356 3.301
10,000,000
 17.250 8.873 5.149 5.027 1.944 3.350 3.431
12,000,000
 21.987 11.268 6.297 6.500 1.951 3.492 3.383
15,000,000
 28.241 14.418 8.316 7.651 1.959 3.396 3.691
20,000,000
 39.533 20.059 11.266 10.532 1.971 3.509 3.754
25,000,000
 60.635 25.663 14.304 13.454 1.973 3.540 3.764
40,000,000
 88.725 44.886 24.185 23.169 1.977 3.669 3.829
50,000,000
 114.416 57.823 30.894 29.125 1.979 3.704 3.928
75,000,000
 183.125 92.266 48.612 45.092 1.985 3.767 4.061
100,000,000
 255.081 128.574 67.290 62.581 1.984 3.791 4.076
120,000,000
 312.871 157.793 82.166 76.300 1.983 3.808 4.101
150,000,000
 407.138 204.936 106.560 98.255 1.987 3.821 4.144
200,000,000
 564.090 283.861 147.090 136.171 1.987 3.835 4.143
250,000,000
 726.253 365.867 189.043 174.160 1.985 3.842 4.170
400,000,000
 1,248.095 627.361 323.704 298.842 1.989 3.856 4.176
500,000,000
 1,603.461 807.211 414.603 382.402 1.986 3.867 4.193
750,000,000
 2,616.871 1,314.717 676.490 622.152 1.990 3.868 4.206
1,000,000,000
 3,552.188 1,785.808 915.109 844.583 1.989 3.882 4.206
1,200,000,000
 4,367.508 2,194.420 1,125.932 1,036.211 1.990 3.879 4.215
1,500,000,000
 5,714.653 2,874.508 1,472.598 1,361.594 1.988 3.881 4.197
2,000,000,000
 7,766.733 3,904.866 2,003.800 1,850.889 1.989 3.876 4.196
2,500,000,000
 10,074.966 5,061.217 2,605.817 2,387.538 1.991 3.866 4.220

 


Back To: