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PCI-x and Socket 940
Hi all,
I holding out for the range of PCI-X graphics cards but I have yet to see any Socket 940 mobo's that support it.....has anyone seen them? I have seen some dual cpu boards (S940) which do but are they functional with just one cpu (FX53)? cheers |
#2
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I have seen some dual cpu boards (S940) which do but are they functional
with just one cpu (FX53)? Any dual mobo should be able to run with only one CPU. EJ -- .... Tiger K8W-240 |
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On Sat, 03 Jul 2004 10:30:14 +0100, Gymni Choo wrote:
Hi all, I holding out for the range of PCI-X graphics cards but I have yet to see any Socket 940 mobo's that support it.....has anyone seen them? I have seen some dual cpu boards (S940) which do but are they functional with just one cpu (FX53)? cheers Do you mean PCI-Express graphics cards?. I've never heard of a PCI-X graphics card, there really isn't any reason for it to exist. PCI-X is the last incarnation of the parallel PCI bus. The basic PCI bus is 32MHz/32bits. PCI-X is 100-133MHz/66bits. It's used in servers only. There are a limited number of cards available for PCI-X, mostly things like Fibre channel controllers. PCI-Express is the new serial interconnect. Each link is 2.5GHz (2Gbits because of 8B/10B encoding). PCI-Express can have from 1 to 32 links per connection so it's capable of much higher performance than PCI-X or AGP. Next generation systems are going to replace both the PCI bus and the AGP bus with PCI-Express, but those boards aren't out yet. For now what you want is AGP-8X for graphics, most of the 940 boards have AGP-8X support. If you want PCI-Express graphics you will have to wait another 6 months or so but it's not worth it. Chances are there won't be any performance difference between first generation PCI-Express graphics cards and their AGP-8X contemporaries. |
#4
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Do you mean PCI-Express graphics cards?. I've never heard of a PCI-X
graphics card, there really isn't any reason for it to exist. PCI-X is the last incarnation of the parallel PCI bus. The basic PCI bus is 32MHz/32bits. PCI-X is 100-133MHz/66bits. It's used in servers only. There are a limited number of cards available for PCI-X, mostly things like Fibre channel controllers. PCI-Express is the new serial interconnect. Each link is 2.5GHz (2Gbits because of 8B/10B encoding). PCI-Express can have from 1 to 32 links per connection so it's capable of much higher performance than PCI-X or AGP. Next generation systems are going to replace both the PCI bus and the AGP bus with PCI-Express, but those boards aren't out yet. For now what you want is AGP-8X for graphics, most of the 940 boards have AGP-8X support. If you want PCI-Express graphics you will have to wait another 6 months or so but it's not worth it. Chances are there won't be any performance difference between first generation PCI-Express graphics cards and their AGP-8X contemporaries. Pci-X is still developing however.. (I dont understand why, unless there is more reliability there).. you can get SATA Pci-X cards .. the PCI-Express stuff will happen with the Nforce 4 chipsets (or so I hear) .. I have seen some VIA roadmaps showing the 800pro having express support (but it doesnt show it now) so I am guessing they have push'd it back for their 900 series.. This is something I want too, but I want to see some of the express spec (right now it's somewhat limited as to what I can open and read on the psig site) |
#5
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Pci-X is still developing however.. (I dont understand why, unless there is more reliability there).. you can get SATA Pci-X cards .. the PCI-Express stuff will happen with the Nforce 4 chipsets (or so I hear) .. I have seen some VIA roadmaps showing the 800pro having express support (but it doesnt show it now) so I am guessing they have push'd it back for their 900 series.. This is something I want too, but I want to see some of the express spec (right now it's somewhat limited as to what I can open and read on the psig site) Old technologies take a very long time to die, remember how long ISA buses were around. PCI-X cards will also work in 3.3V PCI 66MHz slots and there are millions and millions of them out there. So PCI and PCI-X will be around for a long time. There is talk of a PCI-X 2.0 but I doubt that it will actually happen. To push PCI beyond 133MHz will require a change in logic levels which would break it's compatibility with older PCI buses, once you make it incompatible the you might as well go with something completely different like PCI-Express. More importantly Intel has decreed that the world will be PCI-Express not PCI-X 2.0. Intel wants to force the world to be entirely PCI-Express but that won't happen for a while. Even if Intel takes PCI support off of their chipsets, VIA, SIS and Nvidia won't. Broadcom probably won't take it off for a while either. |
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