Memory, latency, cache, single-core performance
| Sisoft Sandra 2010 (16.26) - aggregate bandwidth | ||||
|---|---|---|---|---|
| Intel Core i7 975 EE | Intel Core i7 980X EE | Intel Core i7 920 | Intel Core i7 930 | AMD Phenom II X4 965 BE |
| 19.74 | 18.06 | 19 | 19.02 | 13 |
| Sisoft Sandra 2010 (16.26) - memory latency | ||||
|---|---|---|---|---|
| Intel Core i7 975 EE | Intel Core i7 980X EE | Intel Core i7 920 | Intel Core i7 930 | AMD Phenom II X4 965 BE |
| 73 | 73 | 78 | 77 | 86 |
Bandwidth and latency are both competitive with the quad-core Core i7 range of chips. They don't tell the whole story when taken in isolation, however, and a look at the cache and memory bandwidth shows the 980X EE to be a superlative performer. The test is multi-threaded and the chip's six helpings of cache combine to boost the benchmark score. Interestingly, the CPU doesn't show the expected class-leading performance as we scale between 8MB and 12MB of L3 cache.
Single-threaded application performance
| HEXUS.PiFast - calculation to 10m places | ||||
|---|---|---|---|---|
| Intel Core i7 975 EE | Intel Core i7 980X EE | Intel Core i7 920 | Intel Core i7 930 | AMD Phenom II X4 965 BE |
| 24.75 | 24.63 | 30.11 | 28.92 | 32.49 |
The 12-thread-crunching architecture can do little to boost performance in applications that use a single core, but this is where the 3.33GHz clock-speed comes in, enabling the Core i7 980X EE to match the 975 EE's time.
