Please register or login. There are 0 registered and 1335 anonymous users currently online. Current bandwidth usage: 326.30 kbit/s December 18 - 11:42am EST 
Hardware Analysis
      
Forums Product Prices
  Contents 
 
 

  Latest Topics 
 

More >>
 

    
 
 

  Pentium 4 Scaling with DDR Memory 
  Feb 04, 2002, 08:30am EST 
 

Results - SPECviewperf


By: Dan Mepham

When we put our platforms to the test in SPEC's viewperf OpenGL benchmark, one we've used frequently in the past, things started to get interesting.

graph11

The most plausable explanation here is that the faster three platforms are being limited by the video card. Otherwise, the results observed in the slower PC133 platform don't make much sense at all.

graph12

DRV-07 turned in some interesting results as well. We're at a loss to explain the behavior here, and we even ran the benchmarks several times to make sure there was not an error. It is almost as though the combination of both high memory and FSB bandwidth were necessary for the scores to begin to improve drasically. Performance didn't scale with clock speed at all on most of the test setups, indicating a probable memory bottleneck. Only on the 500/333 platform did performance begin to improve at higher clock speeds.

graph13

Yet another rather interesting result. The DX-06 viewset seemed to exhibit a sort of 'plateau' type behavior. At a certain clock speed, performance would jump quite noticeably, but not scale very much higher beyond that point. Again, we are at a loss for a technical explanation on this one -- theories are of course welcome in our forums!

The remaining viewperf tests turned in somewhat more expected results, and so we haven't included them in the article body. They're available in the appendicies instead.



1. Introduction
2. Processors 101
3. Memory Considerations
4. Test Procedure
5. Results - Linpack & Cachemem
6. Results - STREAM & 3DMark2001
7. Results - Quake 3 Arena
8. Results - MP3 Encoding
9. Results - ScienceMark
10. Results - SPECviewperf
11. Conclusion
12. Appendix A - SPECviewperf

Discuss This Article (5 Comments) - If you have any questions, comments or suggestions about the article and/or its contents please leave your comments here and we'll do our best to address any concerns.

 

    
 
 

  Related Articles 
 
 

  Newsletter 
 
A weekly newsletter featuring an editorial and a roundup of the latest articles, news and other interesting topics.

Please enter your email address below and click Subscribe.