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To: grok who wrote (83722)6/17/1999 6:03:00 PM
From: Tenchusatsu  Respond to of 186894
 
KZNerd, re: benefits of DRDRAM at higher processor speeds

I gleaned a few things off of the benchmarks from Tom's Hardware Guide (http://www.tomshardware.com):

1) Celeron is already up to a 7:1 processor-to-bus clock ratio, and the performance improvements are still there. Soon, Celeron will go to 7.5:1, then 8:1, maybe even further. This would argue against the need for faster DRAM technology, however ...

2) Different benchmarks demonstrate different reliance on DRAM bandwidth. From most reliant on DRAM bandwidth to least:

- SSE applications such as speech recognition
- High-end Winstone 99 applications (Visual C++, Photoshop, etc.)
- Business Winstone 99 applications (MS Office, Netscape, etc.)
- Games

3) Because latency between PC66 and PC100 SDRAM is the same, going to higher clock ratios on a 100 MHz bus will see even smaller performance increases than going to higher clock ratios on a 66 MHz bus. That's why Intel probably won't go past a 6.5:1 clock ratio on a 100 MHz bus.

Tenchusatsu



To: grok who wrote (83722)6/17/1999 7:05:00 PM
From: TigerPaw  Read Replies (3) | Respond to of 186894
 
Do you have any evidence to back this up?
Whoa partner, I'm not regularly from around these parts. I thought I was answering a simple question but seem to have stumbled into an agenda.

My evidence comes from Intel and Rambus and the good engineers I work with. That may seem tainted and one sided, and probably is, but it is a force to be reckoned with. You ask about a wide range of uses, naturally the DRDRAM solution is not going to be the best in all cases right out of the box. The first step is to get the high profit early adapter desktop market. Then new controllers will go after the large capacity server market and the multiple channel multimedia market.

two systems with everything equal except the memory
I just happen to have them side by side on my bench. Almost identical except one has Camino and one has BX. The Rambus is noticably peppier even with the slowest DRDRAM.
TP