Running 6-pin GPU on a 4-pin molex?

[Violent007]

Hello guys this will be my first post here, some of you may find this ridiculous but i'm hoping it can work.

Basically im going to buy this computer:

http://tinyurl.com/c9fjx3j

and this GPU:

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=356682&csid=_61

In the computer it has a 500 Watt PSU, but there is only ONE 4-pin molex avaliable, I plan to use this item to
convert the 1x 4-pin molex into 2x 4-pin molex

http://www.microbarn.com/itemimages/ada-powy.jpg

and then I intend to use this to make it into a 6 pin PCI-E

http://i01.i.aliimg.com/photo/v0/489274451/6_Pin_PCI_E_to_2_X.jpg


Will this work? Or will the GPU be under powered? Thanks!

Heres some of the power info on the card I found:

Thermal & Power
Power Supply Requirements --- 400 Watt Power Supply
Power Connectors --- (1) PCI-E 6-pin Power Connector
Maximum Graphics Card Power --- 116 Watts
Maximum GPU Temperature --- 100 C
Maximum Operating Temperature --- 100 C

 

[Maarsch]

Hmmm, I know the last step will work.

The first step depends on the wattage per rail. (http://www.tomshardware.com/reviews/power-supply-specifications-atx-reference,3061-2.html)
You can split it if the PSU can handle the wattage this would put on the rail. But for that you'd need to know more than "Energy Star Qualified: No"