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To: Bilow who wrote (41614)	5/8/2000 5:33:00 AM
From: Bilow	Read Replies (1) \| Respond to of 93625

Hi all Re Dell Dimension XPS B bench marks: Here's some links to tests of this series of RDRAM machines. This is for the use of those members who are experts in bench marking CPUs. I noted that only the Dell Dimension machines included that DDR based graphics card, for instance, and did very well in the gaming tests. I'm sure the bench mark mavens will have something to say about all this: zdnet.com A chart of various machines, including the XPS B800r: pcworld.com Note that the performance figures are kind of weird. The B has the worst or nearly the worst performance in: Picture Publisher 7.0, Paradox 8.0, Lotus 1-2-3 97, WordPerfect 97 But has the best or nearly the best in: Word 97, Excel 97, PC WorldBench 2000. I noted that the B800r has a faster CPU clock than most of the others. Could it be that the tests where it shined were CPU intensive tests, while the ones where it didn't look so good required better memory latency than RDRAM could provide? Does PC800 have significantly different latency from PC566? I should look it up, but time to go to bed. Perhaps the guys who understand what these tests are all about will enlighten the thread? If Dell really is shipping 566MHz RDRAM, it is !!!Scandalous!!! Especially after all the cra@p we here about how manufacturable the stuff is. Certainly this explains how the "B" series are priced only a few hundred dollars above SDRAM machines - they are likely shipped with the worst bin sort of RDRAM. But the add-on memories are PC700 or PC800. I'm beginning to think that this whole joke makes sense. What a laugh! -- Carl

To: Bilow who wrote (41614)	5/8/2000 9:48:00 AM
From: Dave B	Read Replies (2) \| Respond to of 93625

Carl, Hi all; Jimminies! Dell says RDRAM runs at 566MHz, not 800MHz. I can't believe this! They must be running the memory at 4x the processor bus speed of 133MHz. That would make the simplest memory interface, but all the stuff we see about the great performance of these systems is silly. Dell must have made a mistake somewhere along here... I just called Dell and the B Series uses PC600 RDRAM. As for the great performance being silly, you can't argue with the fact that the B Series systems kicked butt in the PC Magazine and PC World tests (where the 800Mhz systems came in equal to the 1G Athlons, and the 1G systems blew by the 1G Athlons). One of the things we've claimed many times on the board is that most users by a package, not individual components. If they're running PC600 and kicking butt in the benchmarks, imagine how well they'll do when they do put in PC800! (I know, I know, don't even bother answering, Scumbria <G>). Dave

To: Bilow who wrote (41614)	5/8/2000 12:00:00 PM
From: Ali Chen	Respond to of 93625

Carl, <Dell says RDRAM runs at 566MHz, not800MHz. ... There is another explanation, however. > Yes, I would guess that 566MHz makes the R.M.A.bus (@800MHz) more like the RAMbus should be :) :)