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A Look at PCI Express - PAGE 1

- Wednesday, April 21st, 2004 Like Share






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Kuduros Apr 27, 04
It's quite an informative, well written article for being written inhouse I'd been hoping for something like this for a while - techheads have been raving about PCI Express for some time and I wasn't really clued up as to what it was at all.

Are AGP cards just going to suddenly cease then post launch of PCI Express, or just gradually fade to the back of the shelf like PCI did post AGP launch? Or am I still misunderstanding the whole concept here? My understanding is that PCI Express is the new type of "slot" for expansion cards, making 3 in the hardware industry (PCI, AGP and now PCI Express). If this is incorrect, I'd appreciate being corrected and educated on the subject.
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Nu Wa Rocks Apr 27, 04
Possibly, the PCI Express could replace all the regular AGP and PCI slots just like the regular 16/32 bit PCI slots changed out the old 8 bit ISA connector. It'll eventually get phased out, unless something faster comes along and makes the PCI expressworthless to implement.
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Ace Apr 27, 04
lol thanks i think.

AGP is going to fall off pretty drastically from what I've been hearing. PCI Express is looking to be the main focus for the market by about Christmas. PCI Express is a new type of slot. It will eventually replace both PCI and AGP with AGP being the forerunner on the chopping block. As AGP only services graphics cards it is the easiest thing to axe since both ATI and Nvidia have thrown their lots in for PCI Express. Implementing both AGP and PCI Express has also been a sticking point for a lot of companies so dont hold your breath for a board that supports both
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Redemption Apr 27, 04
I think based on what I've seen and heard from rumours and from talking to Ace, it seems like most chipsets are having trouble with AGP and PCI Express working together, so there's a good chance that PCI-E will take over altogether. I'm sure Sis or VIA will come up with something, but that remains to be seen.
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Nu Wa Rocks Apr 27, 04
Just curious, is there an extreme difference in PCI-X and PCI Express?

Which is faster?
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Ace Apr 28, 04
pci-x and pci express are two different technologies aimed at two different segments of the market. pci-x is based upon classic pci but has a 64-bit bus instead of 33 and is found only on server and workstation boards. it's aimed at the scsi /gigabit ethernet crowd more than anything. it's fairly expensive to implement pin count wise and has the same limitations as PCI (eg shared bandwidth). in a 66 Mhz / 64-bit configuration PCI-X provides roughly 530 megs of bandwidth. PCI-X is scaling up though with a 1066 MB/s mode as well as an even faster one I believe

pci express can scale hence the x1 x2 x4 x8 x16 x32 configuration. in a x1 configuration, PCI-Express provides 500 MB/s in full duplex mode already. Scaling up to x4 and up, PCI Express will trounce PCI-X in terms of bandwidth.
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davinciincorporal Jul 31, 05
Thank you for this series of articles. I am building a new computer, which I have not done in at least a decade. I have been picking the brains of a friend who builds systems as a side-line and my son--a computer science major. Both are hard to reach with their busy schedules, and this series answered many of my questions at 4:00 in the morning when no on is around.

Incidentally, I got hooked on the AMD Athlon processors. I will be coupling a 3000 with a Gigabyte board. I am not big on games, but I do some graphics stuff as a hobby; however, it may become more than a hobby in the future. My friend advised me not to go with the PCI Express, but after reading these four articles, I can predict that my son will say the opposite when I can reach him during normal daylight hours.
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