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Technology Stocks : Rambus (RMBS) - Eagle or Penguin
RMBS 95.16+0.4%9:39 AM EST
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To: Bilow who wrote (32785)10/26/1999 9:41:00 AM
From: Dan3  Read Replies (1) of 93625
 
Hi Carl,

Don't know that I'd call myself a high level guy, but here's what I was trying to show:

Take a look at the procession of benchmarks across the various chips. Remember that
Rambus, if it's going to provide the boost Intel and rambus have claimed, should show
increasing improvements as clock speed increases. Alternatively, if latency is most
important, Rambus will score lower as clock speed increases.

I took all the benchmarks and normalized them by dividing each score by the average
for that benchmark. I used inverses for the last two, since lower is better in those cases. Next I divided by clock speed, to control for clock speed.

Remember that PC133 scores 3% to 5% better than PC100, all else being equal, so Rambus
should be improving by more than that if there is any benefit to the technology.

600 600E 600B 650 667 700 733
10.1 1.4657 1.5727 1.6364 1.5253 1.5458 1.4963 1.5351
10.2 1.5744 1.5530 1.5547 1.5361 1.5327 1.5160 1.5127
11.1 1.4746 1.5506 1.5899 1.5197 1.5715 1.5037 1.5585
11.2 1.4217 1.5944 1.5047 1.5795 1.5773 1.5276 1.5545
12.1 1.2920 1.6482 1.3097 1.6246 1.6256 1.6095 1.6141
12.2 1.4832 1.5730 1.4832 1.5686 1.5460 1.5647 1.5420
13.1 1.3266 1.5871 1.4450 1.5252 1.6461 1.5635 1.6385
13.2 1.4430 1.5765 1.4522 1.5633 1.5843 1.5473 1.5839
11.4813 12.6556 11.9757 12.4422 12.6293 12.3285 12.5392

14.1 1.3685 1.6267 1.5566 1.5706 1.6138 1.0348 1.1369
14.2 0.8538 0.9746 0.9746 1.0284 1.0527 1.5003 1.4541
2.2223 2.6013 2.5312 2.5989 2.6664 2.5351 2.5909

Here are the score after controlling by 2% for the 133 bus:

600 600E 600B 650 667 700 733

11.4813 12.6556 11.7409 12.4422 12.3817 12.3285 12.2933

This is what I meant by virtually no benefit to rambus. This is what I was seeing in Sharkey's numbers.
Not only is the performance of rambus inferior to that of
PCXXX, (I'll grant it a benefit over PC100 at low clock
speeds, but I doubt that makes the expense worthwhile)
it doesn't scale as well as MHZ increases!

Dan
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