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  The next Pentium 4 processor, Prescott arrives 
  Feb 02, 2004, 07:30am EST 
 

Performance - Cache Throughput


By: Dan Mepham


Indeed we see here exactly what we expected from the previous pages. While difficult to see, Prescott outperforms Northwood in the 8-16kB area, where Prescott can remain working in its L1 area, while Northwood is forced outside to its L2 area. A similar effect can be seen more clearly in the 512-1024kB area, where Prescott's performance is much better, as it stays in its large L2 area, while Northwood is forced to move the data into main memory.

The question then becomes one of real world performance. We've seen that Prescott is stronger with certain data sizes, and weaker with others, but how will that relate to real world performance? Further, how will Prescotts other improvements factor in, as well as its lengthened pipeline? Let's take a look.



1. Introduction
2. Caching In
3. Branching Off
4. Round 3, SSE Gets a Refresh
5. Intel's 2004 Roadmap, Sock-et to Me!
6. Incremental Improvements
7. Something Rotten in Santa Clara
8. Performance - Cache Latency
9. Performance - Cache Bandwidth
10. Performance - Cache Throughput
11. Performance - ScienceMark 2.0
12. Performance - Sandra & PCMark
13. Performance - PCMark & AquaMark
14. Performance - SPECviewperf
15. Summary
16. Appendix A - Benchmark Configuration

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