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Question:

power supply cable question?

Hi,I have this Corsair TX 750W PSU and one of the cable have 3 x4pins connectors on it. i use one of the 4pins connector on this cable to power 6 fans on my case and the other two 4pins connectors i use one to connect to two ssd drives and other connector to the IDE 1.5TB hdd. do you think that this single cable is under stress to power up all 9 items? is there rule about psu cable? i am asking this because i thought maybe the psu is affecting my gtx 670 sli performance. i get P11000 score and X5006 using 3dmark 11. so it is a bit low. i should get arouynd P16000+.i have i7 2600k @ 4.5ghz w HT and pc3200 16GB. i hope someone can point out the low score issue and power supply cable question.. i am currently running drivers 320.49

Answer:

i have a similar situation, and i use a separate cable for each (HDD, SSD, GPU, DVD) because i think puting the stress on one cable is NOT right, and if that cable got a short circuit all the hardware dies (fails)
well in other psus if you take them apart all the different cables are all stuck into the same power out on the inside but i have never taken apart a modular corsair before so i couldn't say for sure but it wouldn't affect your 6 pins if there was any problems it would be between the hard drives and the fans not only that but between 6 fans and 2 hard drives your probably only using like 30-40watts of power through that cable which is nothing to a 750
A computer power supply is really several supplies in the same box. The specs will tell you if those 4-pin connectors all go to the same place. The outputs for the graphics card come from a different source than those 4-pin Molex connectors so those aren't going to affect performance. You would have to add up the current draw for all of the fans and the drives to know if the power supply is being overloaded. The fans have the current draw printed on them so write them down and add them up. But if you are paranoid, open the case and disconnect the case fans. Also disconnect the drives you aren't using. SSD's don't draw nearly as much power as a HDD so try to disconnect the hard drive if you can. Then run the test again and it should be exactly the same.

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