No, the GT 640 doesn't support SLI. Also SLI does require both cards to have the same amount of vram. There use to be a workaround(coolbits) but it hasn't worked for awhile. AMDs Crossfire does allow for this but SLI does not.
No, the GT 640 doesn't support SLI. Also SLI does require both cards to have the same amount of vram. There use to be a workaround(coolbits) but it hasn't worked for awhile. AMDs Crossfire does allow for this but SLI does not.