Multi-Core Scaling: Intel Core i7 920 (Overclocked)

Multi-threaded Pi Benchmark: y-cruncher v0.4.3

By Alexander J. Yee

(Last updated: December 27, 2009)

 

 

 

Benchmark Settings

Mode: Ram Only
Algorithm: Chudnovsky Formula
Priority: High

1 thread
  • Hyper-Threading disabled via BIOS
  • Processor Affinity set to allow only 1 core
  • 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 - Overclock to 3.34 GHz (3.5 GHz Turbo Boost)
Memory:
12 GB DDR3 - 1336 MHz (triple channel)
Courtesy Of:
Alexander Yee
Version:
v0.4.3.7681 (x64 SSE4.1 ~ Ushio)
Decimal Digits
1 thread
2 threads
4 threads
8 threads
2-t scaling
4-t scaling
8-t scaling
10,000
 0.016 0.016 0.018 0.020 1.000 0.889 0.800
12,000
 0.017 0.017 0.018 0.020 1.000 0.944 0.850
15,000
 0.018 0.018 0.019 0.021 1.000 0.947 0.857
20,000
 0.019 0.019 0.021 0.021 1.000 0.905 0.826
25,000
 0.021 0.021 0.022 0.024 1.000 0.955 0.875
40,000
 0.026 0.026 0.027 0.029 1.000 0.963 0.897
50,000
 0.031 0.030 0.031 0.033 1.033 1.000 0.939
75,000
 0.041 0.038 0.039 0.041 1.079 1.051 1.000
100,000
 0.053 0.048 0.048 0.050 1.104 1.104 1.060
120,000
 0.060 0.056 0.056 0.057 1.071 1.071 1.053
150,000
 0.079 0.066 0.066 0.068 1.197 1.197 1.162
200,000
 0.110 0.085 0.081 0.082 1.294 1.358 1.341
250,000
 0.139 0.103 0.098 0.100 1.350 1.418 1.390
400,000
 0.246 0.168 0.145 0.148 1.464 1.697 1.662
500,000
 0.327 0.214 0.181 0.188 1.528 1.807 1.739
750,000
 0.532 0.341 0.291 0.300 1.560 1.828 1.773
1,000,000
 0.748 0.457 0.359 0.371 1.637 2.084 2.016
1,200,000
 0.934 0.559 0.445 0.459 1.671 2.099 2.035
1,500,000
 1.229 0.713 0.544 0.558 1.724 2.259 2.203
2,000,000
 1.728 0.980 0.714 0.719 1.763 2.420 2.403
2,500,000
 2.229 1.242 0.907 0.913 1.795 2.458 2.441
4,000,000
 3.956 2.118 1.414 1.422 1.868 2.798 2.782
5,000,000
 5.109 2.689 1.782 1.789 1.900 2.867 2.856
7,500,000
 8.367 4.350 2.660 2.629 1.923 3.145 3.183
10,000,000
 11.584 5.955 3.417 3.503 1.945 3.390 3.307
12,000,000
 14.466 7.422 4.172 4.202 1.949 3.467 3.443
15,000,000
 18.850 9.657 5.340 5.234 1.952 3.530 3.601
20,000,000
 26.446 13.476 7.466 7.013 1.962 3.542 3.771
25,000,000
 33.840 17.195 9.577 8.897 1.968 3.533 3.804
40,000,000
 59.317 30.171 16.293 14.954 1.968 3.641 3.967
50,000,000
 75.779 38.401 20.628 18.964 1.966 3.674 3.996
75,000,000
 120.509 60.973 32.252 29.318 1.976 3.736 4.110
100,000,000
 168.603 85.192 44.715 40.648 1.979 3.771 4.148
120,000,000
 207.715 105.278 54.980 49.800 1.973 3.778 4.171
150,000,000
 269.432 136.045 70.929 63.895 1.980 3.799 4.217
200,000,000
 375.013 189.251 98.182 88.503 1.982 3.820 4.237
250,000,000
 485.200 245.422 127.149 114.277 1.977 3.816 4.246
400,000,000
 831.348 419.171 216.360 194.140 1.983 3.842 4.282
500,000,000
 1,073.739 541.630 279.481 250.920 1.982 3.842 4.279
750,000,000
 1,706.140 860.259 441.645 397.134 1.983 3.863 4.296
1,000,000,000
 2,380.839 1,201.574 619.212 556.053 1.981 3.845 4.282
1,200,000,000
 2,865.927 1,443.970 743.172 668.922 1.985 3.856 4.284
1,500,000,000
 3,738.775 1,884.342 967.663 872.585 1.984 3.864 4.285
2,000,000,000
 5,190.689 2,618.023 1,346.221 1,217.032 1.983 3.856 4.265
2,500,000,000
 6,659.353 3,361.110 1,737.767 1,561.352 1.981 3.832 4.265

 


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