Dazlin wrote:
the BUS = speed of the data moving... pciE has 1066mhz or something x_X... pci (normal only has 66mhz or round abouts thats why pci cards dont preform as well as AGP cards... agp is slightly faster i think 100mhz and AGP 8x = 800mhz... so pciE is faster than agp.... but is not needed just yet because agp 8x is doing fine x_X
Know what the hell you are talking about before you try to tell others...
Busses are the set of wires that connect the various parts of the computer together. Bear in mind that a bus is infact made of *two* busses, one for addresses one for data. The wider a bus is (bits) the more data it can pass in a single clock cycle. The faster a bus is, the more clock cycles happen. You can also fiddle with the number of bits sent per line per clock cycle allowing for even higher bandwidth (the amount of data sent per second).
PCI 2.3 (The latest pci standard, ratified in 2001) is 32bits wide, at a speed of 33.33MHz, allowing for 133.33Mb/s throughput.
AGP is what happens when you dedicate a complete PCI bus to a single peripheral. It's a 32bit bus, running at 66Mhz, with 1,2,4 or 8 bits per clock cycle (hence 1x, 2x, 4x, 8x) allowing for throughput from 266Mb/s for AGP1, up to 2133Mb/s for AGP8.
PCI Express, from what I understand, is an 8bit multi-lane bus (up to 32 lanes so far). Runs at a speed of 2.5Ghz though, which means you can get about 16Gigs of data through there every second. Essentially, you are looking at a 4 fold increase over the best throughput of AGPx8.
Capiche?
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