D10 and nvidia Titan, Best solution to power required 6 pin and 8 pin input

Question

Hi,
For gpgpu programming and computing I would like to install a nvidia gtx Titan.
This card has a TDP of 300 Watts, and the manufactor requires a 650 W PSU.
So we thought that the D10 should be ok.
The problem is that it needs a 8 pin and a 6 pin power input. The D10 only has 2 6 pin connectors.
I saw some adapter cables on the market:
the safest seemed using a:
2 x 6 pin to 8 pin.
2 x molex to 6 pin.
The problem is that there is only 1 molex.
if i am correct the 6 pins are rated 75W and the 8 pins 150W
There are some people using 1x 6 pin to 8 pin adapters, some say its ok, some say its dangerous.
What would you recomend?
(1 x 6 pin to 8 pin) and (6 pin)
or
(2 x 6 pin to 8 pin) and ([sata to molex] + molex in a 2x molex to 6 pin)
or
any other recomendations?

Answer 1

Hi,
Yesterday i finaly got the 6to8 pin addapter. So i tried using that on the P5 (6 pin) and to use the the P4 as the standard 6 pin, as suggested. In the beginning if i change something about my D10 i always get some boot errors the first few startups that dissapear as soon as i enter and save and exit the bios. But then it worked  
My first surprize was that the Zotac Titan amp edition, was really quiete under idle.
I could not really test a lot because normaly i have to work using 2 monitors, and i didnt have the proper addapter to mount 2vga monitors, (i needed a DVI-D to vga adapter or a hdmi to vga addapter, this evening when i finish my regular work i will test it again).
In the 1.5 hours that i used the d10 with the Titan it i got one strange screen blackout and i had to reboot. 
When i tried to install the drivers from the DVD, and the DVD started spinning, full power, the display went black, and didnt got back again without a restart. I think that could be a power issue.
I will test it some more, running a gpu benchmark test, and trieng to copy something from a dvd in the same time.
In case it will happen more frequently the Juice box suggested could be an idea, although i think that i dont like the sound of the 3 high speed fans. My D10 is so queiet even with the Titan.
A second isue is that i wanted to try to use the standard nvidia quadro fx 1700 in my D10 next to the gtx Titan.
(to use the quadro for my monitors, and the titan for running gpu programs)
When i tried both together the fan of the quadro (which is normaly very quiete) was running on full power inmediatly after booting, And then gave an error in windows, and didnt give any graphical troughput, but the titan did.
So open points are:
1)if i can reproduce the black screen when playing a DVD or under high load,
2)trying to run 2 graphic cards in parralel. (the second card beign a low power one)
I will update.