I currently have an AGP video card, but I"m buying a new motherboard and I'm thinking PCI Express compatibility might be a good idea to leave room for future upgrades. But what is the difference between a PCI-E x1 slot and a PCI-E x16 slot???

PCI-E x16 is designed specifically for graphics cards, where as PCI-E x1 is... I guess just for other general devices... but they annoy me because it isn't very common to find a PCI-E 1x device and it seems to waste space where a normal usable PCI slot could have been. Mattwizz3 : ) A7N8X-E Deluxe Sempron 2600+ OC 2.2GHz 1Gb DDR400 Dual Channel Maxtor SATA 200Gb/7200/8m WDC IDE 80Gb/7200/8m Damn Microsoft... DIE STEAM DIE!

So you're saying a graphics card wouldn't work at all with a PCI-E x1 slot, right?

PCIe 1x connector is so much smaller then the PCI connector and only supports a bandwidth up to 5Gbps, while the 16x PCIe slot supports 80Gbps. Now there are PCI-e 1x cards, but they are not mainstream since they never caught on (go figure), but as time goes and things like network, sound and other PCI devices migrate to PCi-e they be used a lot more, the kicker is, with board manufacturers intergrating as much features as they possibly can on motherboards, it may be a rehash of the CNR and AMR slots. When Google isn't your best pal

bandwidth Gets Bigger Transfer rate(mbps) ----->faster PCI express x16---------------->4000 AGP 8X -------->2128 PCI express x8 ------->2000 AGP 4X ---->1064 PCI express x2 -->500 AGP 1X ->266 PCI express x1 ->250 PCI ->133 A PCI express slot is designated by the number of lanes it supports:1x slot supports a single lane, an X2 slot supports 2 lanes, and so on. an x16 slot can handle 4 GBps of bandwidth of an AGP 8X. but dont throw your PCI card out yet. the lastest comp and motherboards come equipped with a single x1 slot, a single x16 slot for the graphic card, and some original PCI slots. unless you are on a tight budget or you just bought a high-end AGP video card for your current system, a PC equipped with PCI express is a sound buy. well, if you are not in hurry, however, wait for a while. PCI express cards are scarce and untested, as is software that can take advantage of the newly available bandwidth 3.2GHZ Intel Pentium EE 840 1GB Dual-channel DDR2-533 RAM Asus P5ND2-SLI Deluxe mobo 2 EVGA E-Geforce 7800GTX Creative Soundblaster X-Fi 550W PSU