|
Feature
|
AMD Athlon™ XP |
Pentium® 4 |
| QuantiSpeed™ Architecture |
Yes |
No |
| Operations per clock cycle |
9 |
6 |
| Integer pipelines |
3 |
4 |
| Floating point pipelines |
3 |
2 |
| Full x86 decoders |
3 |
1 |
| L1 cache size |
128KB |
12k µop (Trace Cache) + 8KB (Data Cache) |
| L2 cache size |
256KB (on-chip) |
512 (on-chip) |
| Total on-chip full-speed cache |
384KB |
520 KB +12K µop |
| Total effective on-chip full-speed cache |
384KB (exclusive) |
512 KB
(inclusive) |
| System bus speed |
266MHz |
400MHz |
| 3D enhancement instructions |
3DNow!™ Professional |
SSE2 |
| Cache/prefetch controls |
Yes |
Yes
|
| Streaming controls |
Yes |
Yes
|
| DSP/comm extensions |
Yes |
Yes
|