1. Yes, but not needed. No. 2. 2GB on XP, 3.1-3.3 on Vista.
"There's no star system Slave I can't reach, and there's no planet I can't find. There's nowhere in the Galaxy for you to run. Might as well give up now." Boba Fett
PCI-e x16 means it has 16 data lanes and transfers 16x the data.
PCI-e 2.0 travels 2 times faster then PCI-e 1.0. Which is where the necessity of it comes from when you are thinking high end systems. In most systems its useless but if you want OMFG fast system then it has a use in a few more fps since the data lanes might not be big enough for things like gigantic amounts of data. Such as if you switched to Ultra Uber High 8192 maps, there will be a use for it if you are also using a system in RAID.
Also it has its use in the new Crossfire-X system. You can't really put 4x PCI-e x16 into a motherboard. you gotta take out someplace and usually 2 of the PCI-e slots are 8x. The 2x speed helps them perform at typical PCI-e 1.0 speeds.
Comments
1. Yes, but not needed. No.
2. 2GB on XP, 3.1-3.3 on Vista.
"There's no star system Slave I can't reach, and there's no planet I can't find. There's nowhere in the Galaxy for you to run. Might as well give up now."
Boba Fett
PCI-e x1 means it has 1 data lane.
PCI-e x16 means it has 16 data lanes and transfers 16x the data.
PCI-e 2.0 travels 2 times faster then PCI-e 1.0. Which is where the necessity of it comes from when you are thinking high end systems. In most systems its useless but if you want OMFG fast system then it has a use in a few more fps since the data lanes might not be big enough for things like gigantic amounts of data. Such as if you switched to Ultra Uber High 8192 maps, there will be a use for it if you are also using a system in RAID.
Also it has its use in the new Crossfire-X system. You can't really put 4x PCI-e x16 into a motherboard. you gotta take out someplace and usually 2 of the PCI-e slots are 8x. The 2x speed helps them perform at typical PCI-e 1.0 speeds.