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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?


To: Elmer who wrote (59761)5/27/1999 2:43:00 AM
From: RDM  Read Replies (1) | Respond to of 1572616
 
<You can't capture the market on FPU alone>

You make very valid points Elmer. The general computer market history consider FPU performance only necessary for the geek minority, while real business users were the main market and they did not require any floating performance.

Integer performance is far the more important benchmark for mainstream desktop use that is the backbone of the PIII market. The PIII and Xeon are where the money is.

We will just have to wait. Personally, the fpu performance is more interesting to me because I use it sometimes for long runs and the K7 may turn out to be much better 40% faster than the PIII when compiled specifically for it. I don't think the major desktop market cares about this though. A 10% inprovement in integer performance over the best of Intel CPUs would be much more important commercially.



To: Elmer who wrote (59761)5/27/1999 5:09:00 AM
From: Michael DaKota  Respond to of 1572616
 
re : I am as convinced as you are that something was turned off. I expect the K7 will outperform the PIII in FPU

Elmer, well everyone knows that the FPU power is not really stopped by the cache in front of it. Celeron with 128kb is not 30% slower on cpu-intensive apps compared to the 2mb Xeon...just marginal differences (single processor environment , that is).

Coppermine = still the antique ppro core, albeit at .18u, with SSE and some other minor enhancements / bugs (like mmx;).

So why do you think the FPU performance will increase anything above that one of a pIII clocked to 618 ? It wont. Zipp.

best regards , michael.



To: Elmer who wrote (59761)5/27/1999 9:48:00 AM
From: Cirruslvr  Respond to of 1572616
 
Elmer - "I expect the K7 will outperform the PIII in FPU but perhaps not the Coppermine with it's on die L2, or the Xeon with it's much larger though off die L2. Time will tell."

I didn't think FPU was too dependent on L2 cache, except in SPECfp.

This shows almost no difference in FPU between the PIII and Xeon with double the speed cache and size.

firingsquad.com