2 molex to PCI-E on a 550 XFX

Hasmir · Mar 26, 2014

Good evening

I just brought a 770 MSI (OC) and i only have a 550 XFC core edition. It only has one PCI-E 8 pin (6 pin + 2) but i need 2x 8 pin to run the card. So i brought a 2 molex to PCI-E (8 pin). My question here is:

1. Will my card be abel to run on a 550 XFX core edition?
2. how should i connect the 2 molex to 1 PCI-E 8 pin cable? Just plug it into some random molex cabels, or is there any special way to do it?

here is my current setup:

CPU - AMD 8350 black edition
GPU - MSI GF 770 2GB (TF OC edition)
HDD - 500 GB HDD (Cant remember the brand)
PSU - xfx core 550W bronze
Mobo - Asus formula v
Ram - 2x 4 croshair dominator 1600 Mhz

Sorry for my bad gramma - Im a Dane

.. Ty for reading!

scout_03 · Mar 26, 2014

this is your psu it should have 2 pci-e 8 pins cables http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013&clickid=TuuRojQBJQ2sTEq2Y22ts2cnUkTTtX128WWBxQ0&iradid=97618&ircid=2106&irpid=79301&nm_mc=AFC-IR&cm_mmc=AFC-IR-_-na-_-na-_-na

clutchc · Mar 26, 2014

Usually when a PSU has insufficient PCIe power cables, that means it isn't intended on running a card that requires more than provided. However with your 125W CPU and the 230W GTX 770 (non-O.C.), you will be a bit on the low end for having any headroom. Nvidia recommends a 600W PSU minimum, but of course they don't know if you have a good or poor quality PSU. I guess I should recommend upgrading to a bigger PSU.

But if you want to chance it, the best way to connect the Molex/PCIe power cables is to balance connections from different daisy chains of Molex connectors. In the case of your PSU it won't really matter however, because its +12V rail is a single 44A rail. Personally, I think the PSU will handle the load fine with its 528W +12V rail. And XFX makes good units. But if you start having shut downs or re-boots, it is probably because the PSU couldn't keep up when the card peaked.

Hasmir · Mar 26, 2014

scout_03 :

Sadly that is the gold edition (i think, cus i really only have 1 xD) :/... Mine only have 1

scout_03 · Mar 26, 2014

you gone have to link me to it since all the one i found have dual pci-e cable .

Hasmir · Mar 27, 2014

Will do

- http://mediafiles.xfxforce.com/coreeditionproductsheet110411.pdf Check for the 550 version. Only one 6+2 PCI-E pin :/

clutchc · Mar 27, 2014

Hasmir :

As long as you have the 2nd 6 pin connector, all you need is to get an 8 to 6 pin adapter: http://www.newegg.com/Product/Product.aspx?gclid=CLTzt56AtL0CFbQWMgodkGkAkA&Item=N82E16812200420&nm_mc=KNC-GoogleAdwords&cm_mmc=KNC-GoogleAdwords-_-pla-_-Internal+Power+Cables-_-N82E16812200420&ef_id=UzGXLwAAAI90-ru6:20140328004514:s

scout_03 · Mar 27, 2014

i would go with clutchc solution .

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2 molex to PCI-E on a 550 XFX

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