Multi-Core Scaling: Intel Core 2 Quad Q9400

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

By Alexander J. Yee

(Last updated: July 22, 2009)

 

 

 

Benchmark Settings

Mode: Ram Only
Algorithm: Chudnovsky Formula
Priority: High

1 thread
  • y-cruncher set to use 1 thread
2 threads
  • Processor Affinity set to allow only 2 cores (on the same die)
  • y-cruncher set to use 2 threads
4 threads
  • y-cruncher set to use 4 threads

Benchmarks

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

Processor(s):
2.66 GHz Intel Core 2 Quad - Q9400 Yorkfield
Memory:
8 GB DDR2 - 800 MHz (dual channel)
Courtesy Of:
Alexander Yee
Version:
v0.4.1.7408 (x64 SSE3 - AV)
Decimal Digits
1 thread
2 threads
4 threads
2-t scaling
4-t scaling
1,000,000
1.538 0.974 0.918 1.579 1.675
1,200,000
1.864 1.238 1.159 1.506 1.608
1,500,000
2.389 1.488 1.353 1.606 1.766
2,000,000
3.259 1.979 1.711 1.647 1.905
2,500,000
4.433 2.467 2.099 1.797 2.112
4,000,000
7.505 4.108 3.355 1.827 2.237
5,000,000
9.736 5.196 4.187 1.874 2.325
7,500,000
16.527 8.318 5.887 1.987 2.807
10,000,000
22.290 11.405 7.859 1.954 2.836
12,000,000
27.344 14.371 10.281 1.902 2.659
15,000,000
35.112 18.157 12.625 1.934 2.781
20,000,000
52.152 26.370 17.203 1.978 3.032
25,000,000
64.293 36.130 21.487 1.779 2.992
40,000,000
115.217 57.652 37.032 1.998 3.111
50,000,000
151.050 72.925 47.591 2.071 3.174
75,000,000
237.437 116.387 73.005 2.040 3.252
100,000,000
342.788 172.163 103.095 1.991 3.325
120,000,000
406.018 207.335 126.614 1.958 3.207
150,000,000
525.719 269.295 159.091 1.952 3.305
200,000,000
717.077 372.130 220.909 1.927 3.246
250,000,000
946.334 498.521 288.257 1.898 3.283
400,000,000
1,632.83 904.323 481.324 1.806 3.392
500,000,000
2,069.465 1,201.936 614.925 1.722 3.365
750,000,000
3,366.076 1,764.733 1,005.353 1.907 3.348
1,000,000,000
4,594 2,322.570 1,360.129 1.978 3.378
1,200,000,000
5,648 2,700.744 1,662.660 2.091 3.397
1,500,000,000
7,396 3,538.829 2,191.263 2.090 3.375

 


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