Author: Jeremiah Penery
Date: 09:13:35 01/24/03
Go up one level in this thread
On January 24, 2003 at 10:25:44, Robert Hyatt wrote: >On January 24, 2003 at 02:15:34, Jeremiah Penery wrote: > >>On January 24, 2003 at 00:56:41, Robert Hyatt wrote: >> >>>On January 23, 2003 at 23:20:33, Jeremiah Penery wrote: >>> >>>>On January 23, 2003 at 20:59:04, Robert Hyatt wrote: >>>> >>>>>means that some sort of PCI bus interface is also needed. The PCI bus is >>>>>changing regularly as well, as it its clock frequency. >>>> >>>>?? >>>>The basic PCI bus has not changed in at least 10 years, so I'm not sure what >>>>you're talking about here. >>> >>>Mine has. 64 bit pci. 32bit pci. which speed? Etc. >>> >>>You have to make a card that will plug into the thing. 10 years ago it would >>>have probably been an EISA card. 3 years ago 32 bit PCI. Now 64bit pci. And >>>so forth... >> >>About 10 years ago, I had a 486 something or other. It had PCI slots which were >>identical to the PCI slots in my computer today (32 bits/33MHz). Sure, you can >>get 64 bit/66MHz slots, but 32b/33MHz slots are still most plentiful, as they >>have been for years. Really, you can only find the 64bit/66MHz slots on some >>server-type motherboards, and often they still have some of the old slots as >>well. Further, I think (but I'm not totally sure) that 32-bit cards work in >>64-bit slots. > > >First, they don't work. And second, the point is about getting better (faster) >as time >passes. Using old PCI slots gives you a specific bottleneck to talk to a >chess-processor >that sits on the PCI bus. If you stick at the stock 32 bit 33 mhz bus speed, >then the faster >you make the microprocessor itself, the less searching you can do on the chess >processor to >keep a speed balance (same issue exactly was found in deep blue). > >The point is that if you want to go faster you have to speed up the bottleneck >as well or >you don't advance. You seemed to originally imply that changing the PCI interface of the card (several times) was mandatory, due to changing standard. My point was that they could have kept the same interface if they chose to, because the standard hasn't really changed. If they absolutely want the best performance, they can use one of the bigger/faster PCI variants, but it is their choice to do so. Even so, they can't have changed it more than once or twice in its lifetime. >By the way, the "don't work comment" has only been verified once. I will have >to look at >my box, but I believe that the 64 bit connecter is larger, but I might be wrong. > However, I >do remember that 32 bit cards did not work in the 64 bit slot on this particular >machine, >whether it was a "did not fit" or "did not function" I don't recall... Like I said, I wasn't totally sure about that. :) I thought maybe I had read it somewhere. I do remember ISA cards that didn't fill up the whole slot, however, and assumed it could work the same with the bigger PCI slots.
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