Q56_Monster
Just buy some old used ones hallow. A good single rail 1200 off Fleabay, the marketplace, or any of the forum buy/sell sections. String em together.
When I Connected My Thermaltake 1200W that had ALL of the three 6-pin and three 8-pin PCI-E available, But was already being used as the Main PSU for the MB and OC'd CPU on just One KPE, I had Artifacting like Crazy on Vantage at the same OC Settings as the other Three KPE's that were Already Underpowered with the Single 1600W on Them (as My Tests have Shown), So I Immediately Dumped That Idea Before Something Got Damaged!
I Don't Think buying another 1200W+ to try and run the other Two KPE's will be sufficient, Since I have already shown in testing that Two OC'd KPE's required at Least One 1600W with an available 110A Single Rail to Operate at the Levels I want.
Yes, I agree with You...........I probably Could Jury rig some old PSU's to get the Wattage I need, But THEN I Take the chance of Screwing up Thousands of $$$$ in Hard-to-Get Graphics Cards.
Finally, Last Night after Hours of Internet Surfing (looking at my Laptop Screen until my eyes were blurry) I managed to Find another Rosewill Hercules 1600W that I bought IMMEDIATELY, the only problem being is I won't get it delivered to me for a week or so, But then at Least I will have the Exact Same Wattage and Amps Fed to All Four Cards!
If a Total of 3200W doesn't do the Trick of running Them on Just Water Cooling (Not Sub-Zero or LN2)................The Only Other Option that I can see is buying Two More 1600W PSU's on Top of the Two I will have.
Quad Graphics Cards.....................Quad Power Supplies...................and a 200 AMP Service Installation for My House!