False. The three-way board would use the IO headers on existing boards. And all future boards are being designed pin- and signal-compatible, so you could use three DPS-2000BB boards or three DPS-800 boards when those are available, or any past or future revision D750 board.


Also, Bawb3 - it's too bad you don't have V0.5 boards, because the V0.4 boards' internal current meter isn't accurate (reads high) or you could get a good measure on how much power the cards are actually eating. For the V0.5 board, 1.8V on the CUR pin should correspond to 60A. I'd say if your V0.4 board's CUR pin reads 1.2V or less, you're at less than 2/3 capacity and it should be safe to add a third card. Should be, no guarantees.

I've got one of these boards powering a 7870 Eyefinity 6 on my workbench right now, been running for probably approaching a month with no issues at all. Are you using the EON pin to turn the supply on, or manual toggle switch?