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 |
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 |
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 |
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.
