EVGA GTX 760 Power Supply Issue

[HogCooter]

Hello, just got my boy the GEFORCE GTX 760 GPU for Christmas and am having fits trying to figure out the power supply. I have a cooler master RS500-PCARD3-US power supply. It has one pci-express 6 pin connector

I do have the adapters they gave me in the box. I'm wondering if the configuration like I have in the picture will work, note there is not 2 connectors going into the adapter, only 1. Will this work, or does it have to have both?

With my configuration is there any way to get this to work with this power supply? Any help is appreciated by a young man who this GPU was his main Christmas gift.

Thanks.

 

[MC_K7]

Unfortunately your pictures are a little fuzzy it's hard to see everything well.

Basically the GTX-760 needs 2 x 6-pin PCI-E power connectors. I understand your PSU only got one, so you need to use molex adapter for the second one. Usually it will be two molex going into one 6-pin PCI-E.

But I'm not sure I understand the pictures well, on the side of your card, there seems to be 1 x 8-pin + 1 x 6-pin... Are you sure you got the 760 because it should be 2 x 6-pin. On the first picture there also seem to be an adapter going for the PCI-E, I understand the need for adapters for the molex part, but PCI-E should connect directly to the card and you seem to have some kind of adapter between the two.

 

[HogCooter]

Thanks for the input. FYI, the card worked as I had it pictured. It is an acceptable configuration to have just one power connector going into the adapter. BUT, You must have power going into both connectors on the card. I know it seems like a duh, but I didn't know that. I'll leave this up in case anyone else needs this info.

 

[lonewolf7]

Its not recommended to use an molex adapter for 6/8 pin connectors. And yours CM's PSU is not a trusted unit either. Not Recommend for stressful situations. May not be able to put out full rated power above room temperature, and may slightly fail to meet ATX specs.

So if you could, replace the PSU ASAP to protect your components.

 

[MC_K7]

Its not recommended to use an molex adapter for 6/8 pin connectors. And yours CM's PSU is not a trusted unit either. Not Recommend for stressful situations. May not be able to put out full rated power above room temperature, and may slightly fail to meet ATX specs.

So if you could, replace the PSU ASAP to protect your components.

Yeah I didn't mention it, but using molex adapter isn't really the best. And your PSU seems low-end as lonewolf7 said. It would have been better to get a new PSU with this card.

You might be lucky and won't have any problems, but don't be surprise if you get instability or failures over the years. People tend to underestimate the importance of a good PSU. They often buy high-end video card and go really cheap on the PSU. I know it's more exciting to shop for a video card than a power supply. But never forget the PSU is what feeds power to all your components inside the PC. A cheap unit can potentially damage other components.

 

[lonewolf7]

^+1.

 

[HogCooter]

I have to agree with both of you. I thought I was stretching it with the 500 as NVIDIA says it is the minimum needed. I'm thinking an upgrade to at least the 600 is next. It shouldn't blow anything should it.

 

[giantbucket]

I'm running an Asus GTX760 from a 430W supply just fine. The GTX760 is a 150W card so it doesn't need a ton of current (12-15 amps in reality). I'm willing to bet that on the card all of the GND wires join and all of the +12V lines join so the multiple connectors are only to keep wire resistance low (and look cool). Seriously, the wires are 18AWG each, times 3-4 on an 8-pin connector - typical voltage drop over 12" of wire is probably 0.05V which any on board VRM should handle.

Sorry, engineering tangent.

Electrically, the Molex adapters are fine, they're just annoying and unsightly. And a 500W supply should be sufficient.

 

[lonewolf7]

@ giantbucket, what is the make/model of your PSU ?

 

[giantbucket]

mine is the oft-criticized Corsair CX430M. "people say" it has crap parts and has coil whine, which it doesn't cuz it's 2 feet from my ear and the only noise is the Corsair H55 fan. I've run the 3DMark and Unigine benchmarks with zero power issues. i3-4130 processor on a GA-H87N-WIFI board.

 

[lonewolf7]

So yours is not a CM(Cooler Master)! That is my whole point, any Corsair PSU is better than CM(except some). May be yours is a budget PSU and not the best but far better than CM's crap.

CM : Cooler Master V series 700, 850, 1kW solid one's.

Cooler Master Ultimate/UCP decent one's.

Cooler Master GX 80 Plus 450W
Cooler Master Real Power Pro >greater than 800 watt better one's.

Cooler Master Real Power Pro <less than 800 watt
Cooler Master iGreen
Cooler Master Silent (and gold) Pro good one's

Cooler Master eXtreme (only use 75% of labeled wattage)
Cooler Master GX (except 450w) so and so not recommended for stressful situations

Rest are bunch of crap one's.

 

[MC_K7]

I'm a big fan of Corsair PSU, especially their TX and HX series.

I got a HX650 myself.