I have 600W power supply (OCZ Stealthxstream 2 600W) in my pc. I use currently Asus Radeon HD 7970 graphics card but would like to buy second card (GTX 970) and use both cards at the same time at full power (but not overclocked).
When this one card I have is used at full capacity I measured that computer draws around 245W of power. The second card power requirements are around 150W.
I have only three 4-pin molex connectors free left (two are already used to power first card) and the new card would require two 6-pin connectors. Could I split one 4-pin into two 4-pin connectors and then use two 2x4-pin to 6-pin adapters?
Would I be able to use current power supply in this setup?
Edit: with all four CPU cores at 100% the power consumption is right now around 303W, but I don't expect to use that much.