Memory, latency, and HEXUS.PiFast
| ScienceMark 2 memory latency | |||||||
|---|---|---|---|---|---|---|---|
| Intel Core i7 950 | Intel Core i7 870 | Intel Core i7 920 | AMD Phenom II X4 965 BE | Intel Core i7 975 EE | Intel Core i5 750 | Intel Core i7 860 | Intel Core 2 Q9650 |
| 39.28 | 31.27 | 40.4 | 52.18 | 28.73 | 34.77 | 31.87 | 44.17 |
Intel Core i7 950
Intel Core i7 870
Intel Core i7 920
AMD Phenom II X4 965 BE
Intel Core i7 975 EE
Intel Core i5 750
Intel Core i7 860
Intel Core 2 Q9650
0
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20
30
40
50
60
Latency is excellent on the three new chips, and they're only bested by the ultra-expensive Core i7 975 EE.
| Sisoft Sandra 2009 SP4 (15.124) - float | |||||||
|---|---|---|---|---|---|---|---|
| Intel Core i7 950 | Intel Core i7 870 | Intel Core i7 920 | AMD Phenom II X4 965 BE | Intel Core i7 975 EE | Intel Core i5 750 | Intel Core i7 860 | Intel Core 2 Q9650 |
| 18.95 | 19.45 | 18.7 | 13 | 27.49 | 16.61 | 19.4 | 7.18 |
Intel Core i7 950
Intel Core i7 870
Intel Core i7 920
AMD Phenom II X4 965 BE
Intel Core i7 975 EE
Intel Core i5 750
Intel Core i7 860
Intel Core 2 Q9650
0
5
10
15
20
25
30
Bandwidth, too, is impressive from a dual-channel setup. The Lynnfield trio easily beat out Core 2 Quad Q9650 and AMD's best.
| HEXUS.PiFast - calculation to 10m places | |||||||
|---|---|---|---|---|---|---|---|
| Intel Core i7 950 | Intel Core i7 870 | Intel Core i7 920 | AMD Phenom II X4 965 BE | Intel Core i7 975 EE | Intel Core i5 750 | Intel Core i7 860 | Intel Core 2 Q9650 |
| 26.61 | 24.34 | 31.28 | 32.36 | 24.11 | 27.25 | 31.02 | 30.62 |
Intel Core i7 950
Intel Core i7 870
Intel Core i7 920
AMD Phenom II X4 965 BE
Intel Core i7 975 EE
Intel Core i5 750
Intel Core i7 860
Intel Core 2 Q9650
0
5
10
15
20
25
30
35
Break it all down into the single-threaded HEXUS.PiFast test and the Core i5 750 gives all chips a good run. The 860's relatively poor result can be attributed to a lack of Turbo Boost, as highlighted in our setup notes. Retail chips will not suffer from this problem.
