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

Multi-threaded Pi Benchmark: y-cruncher v0.4.1

By Alexander J. Yee

(Last updated: August 1, 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 - Overclock to 3.34 GHz (3.5 GHz Turbo Boost)
Memory:
12 GB DDR3 - 1336 MHz (triple channel)
Courtesy Of:
Alexander Yee
Version:
v0.4.1.7408 (x64 SSE3 - AV)
Decimal Digits
1 thread
2 threads
4 threads
8 threads
2-t scaling
4-t scaling
8-t scaling
1,000,000
0.936 0.594 0.434 0.446 1.576 2.157 2.099
1,200,000
1.140 0.699 0.520 0.525 1.631 2.192 2.171
1,500,000
1.533 0.909 0.663 0.702 1.686 2.312 2.184
2,000,000
2.121 1.210 0.853 0.869 1.753 2.487 2.441
2,500,000
2.709 1.519 1.050 1.064 1.783 2.580 2.546
4,000,000
4.809 2.572 1.668 1.625 1.870 2.883 2.959
5,000,000
6.152 3.240 2.065 2.022 1.899 2.979 3.043
7,500,000
10.092 5.259 3.130 3.063 1.919 3.224 3.295
10,000,000
13.868 7.140 4.141 4.130 1.942 3.349 3.358
12,000,000
17.643 9.061 5.249 5.263 1.947 3.361 3.352
15,000,000
22.684 11.589 6.557 6.240 1.957 3.460 3.635
20,000,000
31.744 16.157 8.886 8.700 1.965 3.572 3.649
25,000,000
40.640 20.662 11.283 11.071 1.967 3.602 3.671
40,000,000
71.340 36.257 19.676 18.148 1.968 3.626 3.931
50,000,000
91.795 46.690 25.435 24.061 1.966 3.609 3.815
75,000,000
146.851 74.301 39.384 36.600 1.976 3.729 4.012
100,000,000
204.749 103.437 54.466 50.597 1.979 3.759 4.047
120,000,000
250.810 126.391 66.360 61.632 1.984 3.780 4.067
150,000,000
326.492 164.421 85.962 79.228 1.986 3.798 4.121
200,000,000
452.112 228.399 118.259 109.567 1.979 3.823 4.126
250,000,000
581.573 294.386 151.853 140.156 1.976 3.830 4.149
400,000,000
1,000.616 503.617 259.332 240.435 1.987 3.858 4.162
500,000,000
1,285.056 647.273 333.282 307.435 1.985 3.856 4.180
750,000,000
2,095.083 1,053.388 540.531 499.945 1.989 3.876 4.191
1,000,000,000
2,844.499 1,431.870 737.887 678.590 1.987 3.855 4.192
1,200,000,000
3,500.076 1,761.196 903.938 832.759 1.987 3.872 4.203
1,500,000,000
4,576 2,301.204 1,182.205 1,094.344 1.989 3.871 4.182
2,000,000,000
6,222 3,131.173 1,609.036 1,492.876 1.987 3.867 4.168

 


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