Author: Matt Taylor
Date: 18:55:09 12/13/02
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<snip> >>the problem is you lose time to the ECC and registered features of the >>memory you need for the dual. of course that's the case for all duals. >>both K7 MP and Xeon suffer from that regrettably. > >That is not true. The duals do _not_ have to have ECC ram. And it doesn't >appear to be >any slower than non-ECC ram although I will be able to test that before long as >we have >some non-ECC machines coming in. Actually he is correct about the registered ram. The "registered" feature is that it delays longer than unregistered ram. This is important for stability. It doesn't affect bandwidth, but it does affect latency. <snip> >>With some luck by the time they release a 3.06Ghz Xeon they have improved >>the SMT another bit. >> >>Seems to me they working for years to get that SMT/HT slowly better working. > >Not "for years". It was announced as a coming thing a couple of years ago and >several >vendors have been discussing the idea. And they are going to increase the ratio >of physical >to logical cpus before long also... I don't think so. HT won't scale terribly well. I made another post about that, and I won't reiterate what I said there. -Matt
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