2 connector on 1 psu cable?

crimsxn

Reputable
Oct 4, 2015
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4,510
ok, so recently i bought a graphics card with an adapter since i did not have an available 8 pin connector. the adapter required 2 sata power connectors and i thought i should be since my sata cables have 2 connectors, one all the way at the end of the cable and one about halfway. right now my hard drive is being powered by the one halfway up the cable and one of the sata connections going into my graphics card is at the end of the same cable. i want to know if my graphics card is getting enough power.
 
Solution
your power supply should have a 6pin connector, though. that would almost be better than the SATA power splitter deal. as i recall, the difference between 6pin and 8pin power for graphics cards is that the 2 extra pins are both ground, so it's not like an 8pin is a stronger power delivery than a 6pin. and the graphics card only takes 120W or so.

try the 6pin, and if the card powers up and works for an hour or two, then you're basically good to go.

until that power supply dies.....
that's very iffy. 8pin power indicates your graphics card wants to use a decent amount of power. what card is it anyways?

what is the power supply? how many cables do you have that have SATA power on them? if you have two separate cables, then plug the "splitter" into the FIRST connector on two SEPARATE cables, and plug your hard drives into the second / last connectors. give your graphics card the priority, so to speak.
 
I have a evga GTX 960 and a strange power supply called : LSP 450w and i think the brand is called Ultra. there is 2 sata CABLES but each cable has 2 output connectors

 
your power supply should have a 6pin connector, though. that would almost be better than the SATA power splitter deal. as i recall, the difference between 6pin and 8pin power for graphics cards is that the 2 extra pins are both ground, so it's not like an 8pin is a stronger power delivery than a 6pin. and the graphics card only takes 120W or so.

try the 6pin, and if the card powers up and works for an hour or two, then you're basically good to go.

until that power supply dies.....
 
Solution


Even if it says 450W, that thing probably isn't meant to run externally powered graphics card. You'll probably end up getting voltage instability by joining the lines.

You can find decent 450W power supplies with the proper connectors for about $50-70. You can try a http://www.newegg.com/Product/Product.aspx?Item=N82E16817151127&cm_re=450W_power_supply-_-17-151-127-_-Product or if you are really cheap, http://www.newegg.com/Product/Product.aspx?Item=N82E16817182295&cm_re=450W_power_supply-_-17-182-295-_-Product
 
ok cool, thanks man, one last question though, if i use the 6pin on the 8pin gpu will it damage anything? (im kinda new to PCs and stuff, sorry.)

 
and yeah, start planning for a newer power supply, $50 should do. the "problem" with your Ultra power supply is that it's an older design, and realistically it's only a 280W power supply as far as modern computers are concerned (today's units are rated primarily on the power available on just the +12V section)
 


You will either overload the PSU or fail to give enough power to the GPU and have blue screens.