It's gonna be the same, you can have 1 monitor for each port on a single GPU. Since you're doing SLI, you can't use the 2nd card for display output. So even with both cards, you're only going to have 4 usable ports. Like I said though, you can use splitters, so theoretically, you can have 8 monitors, but it's highly unrecommended. I would say a max of 4 monitors will give you the best quality and quantity ratio. if you go less than 4 monitors you're basically just wasting VRAM that's there, and if you go over 4, you're gonna have to use a splitter, so it's going to degrade the quality of the picture coming from that particular port and if you use up to much of the VRAM it'll cause poor quality and/or issues arising.