SKUs :
GeForce 8800 GT : 112 SP, PCIe 2.0, PV3.0(VC1), 256-bit mem interface
GeForce 8800 GTS : 112 SP, PCIe 2.0, PV3.0 (VC1), 320-bit mem interface
GeForce 8800 GTX : 128 SP, PCIe 2.0, PV3.0 (VC1), 384-bit mem interface
GeForce 8800 Ultra : 128 SP, PCIe 2.0, PV3.0 (VC1), 384-bit mem interface
Nvidia has send out a notice to their AICs making clear to them not to market the new GeForce 8800 GTS 640MB as a card featuring 112 SPs although this should be quite a good selling point. Instead, card partners can brand the card as special edition or OC edition ie. GeForce 8800 GTS OC Edition. The new 112 SP 8800 GTS will still work fine with the 96 SP 8800 GTS in SLI configuration. Nvidia stress that they will not offer 112 SP 8800 GTS in 320MB memory configurations.
sources:
http://www.vr-zone.com/articles/112_SP_8800_GTS_Works_w_96_SP_8800_GTS_In_SLI/5346.html
http://forums.vr-zone.com/showthread.php?t=194422
GeForce 8800 GT : 112 SP, PCIe 2.0, PV3.0(VC1), 256-bit mem interface
GeForce 8800 GTS : 112 SP, PCIe 2.0, PV3.0 (VC1), 320-bit mem interface
GeForce 8800 GTX : 128 SP, PCIe 2.0, PV3.0 (VC1), 384-bit mem interface
GeForce 8800 Ultra : 128 SP, PCIe 2.0, PV3.0 (VC1), 384-bit mem interface
Nvidia has send out a notice to their AICs making clear to them not to market the new GeForce 8800 GTS 640MB as a card featuring 112 SPs although this should be quite a good selling point. Instead, card partners can brand the card as special edition or OC edition ie. GeForce 8800 GTS OC Edition. The new 112 SP 8800 GTS will still work fine with the 96 SP 8800 GTS in SLI configuration. Nvidia stress that they will not offer 112 SP 8800 GTS in 320MB memory configurations.
sources:
http://www.vr-zone.com/articles/112_SP_8800_GTS_Works_w_96_SP_8800_GTS_In_SLI/5346.html
http://forums.vr-zone.com/showthread.php?t=194422
320mb cards on the way out then. Shame they only keeping the 640 mb though as they are pretty expensive 
) what real world difference does the bigger memory interface make??
