| Features and Benefits |
AMD Athlon™ XP |
Pentium® 4 |
 |
QuantiSpeed™ Architecture
Optimum balance between work per clock cycle and operating frequency
|
|
Yes |
|
No |
|
|
Operations per clock cycle
More operations per clock cycle enables faster software execution
|
|
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, 512KB
(on-chip) |
|
512KB (on-chip) |
|
|
Total on-chip full-speed cache
|
|
384KB, 640KB |
|
520KB + 12K µop (on-chip) |
|
|
Total effective, on-chip, full speed cache
|
|
384KB, 640KB
(exclusive) |
|
512KB
(inclusive) |
|
|
System Bus Speed
The speed at which data is transferred between the processor and the rest of the system
|
|
400MHz
333MHz
266MHz |
|
533MHz
400MHz |
|
|
3D Enhancement Instructions
Enables more lifelike 3D imaging and graphics
|
|
3DNow!™ Professional Technology |
|
SSE2 |
|
|
Cache/prefetch controls
| |
Yes |
|
Yes |
|
|
Streaming Controls
|
|
Yes |
|
Yes |
|
|
DSP/comm extensions
|
|
Yes |
|
Yes |
