Hai para Master!

Mau bertanya dong, ane rencana mau upgrade VGA card.

Mau minta saran ttg VGA directx 11 yg irit Watt nya, dgn detil pertanyaan sbb :

1. 256bit GDDR5, tapi cuman butuh 6 pin power aja ?
   
2. 256bit GDDR5, 6x2 pin power tapi tetap low-watt ?
   
3. 128bit GDDR5, vga directX11, 6 pin power ?
   
4. Kebetulan PSU ane hanya punya 6 pin power vga pci express,apakah kalau ane pasang kabel converter/extension di PSU (misal: 4 pin hole jadi 6 pin) itu akan aman buat VGA Card ?
   

Budget ane lets say 1,3-2jt.

Spec ane :
Procie Xeon X3360 2,8ghz cache 12mb
Mobo MSI G41M-P28
VGA V-Gen 4GB DDR3
HDD Seagate Barracuda 500GB + Hitachi 2TB & 160GB
PSU Seasonic SS 600ET 600W
Case Dazumba D-Vito903 w/ 5 Fan orisinil dazumba

Boleh dibantu ya gan, ma'aci