GTX 770 and only 1 8pin power connector

[Ash_BMW]

Seems the bundled cooler master psu only has 1 1x8 connector and my card requires 2 x 8 pin.

I have 3 molex connectors can i use these with an adaptor as well as my 1x8 to power my MSI GTX 770? or can you use a 1x6 pin to 2x8 adaptor?

Gutted really as the cooler master website has a picture which states 2 x 8 pin PCie


Il be upgrading psu when i over clock but need something to get by with now

 

[socialassassin]

Most GPUs come with a 2 x molex to 8-pin Pcie adapter cable. If not, you can buy one for a few bucks and it shoud work fine.

 

[bumnut53]

I would use the 1 x 8 pin connector and a molex with an 8 pin adapter, it will be work fine.

 

[ubercake]

You can use the adapter no problem, but what cooler master PSU do you have? Model?

 

[Onus]

Whether or not it is safe to use an adapter will depend on the quality of the PSU. Competent technical reviews have shown that most CM PSUs (e.g. any "Extreme" anything) are overrated near-junk, likely unsafe to use with an adapter.

 

[Ash_BMW]

Cooler master RS 500 500w. Im close to the line on power for my setup, but as i say i will be upgrading PSU when i overclock. It can in a bundle so cant complain.

 

[enemy1g]

Second that, what is your model of your PSU?

You can use 2+6 connectors for the 8 pin requirement. But if your PSU only came with one 8 pin connector (including 2+6 and 8 pin), then that' leads me to believe that your PSU might not be capable for running that card.

Edit: Just saw your post. A good 550W would even be pushing it (if even slightly) for a GTX 770. Using a lower tier CM PSU @ 500W is asking for problems.

 

[Onus]

Ooh no; that one gets electrically noisy over 80%: http://www.hardwaresecrets.com/article/Cooler-Master-eXtreme-Power-Plus-500-W-Power-Supply-Review/728/10
This means your system will likely experience instability, including crashes and possible data loss.

 

[Ash_BMW]

Would it be ok for a few months untill i save for a better psu?

 

[ubercake]

Cooler master RS 500 500w. Im close to the line on power for my setup, but as i say i will be upgrading PSU when i overclock. It can in a bundle so cant complain.

You only have 396W available on the 12V rail. The stock GTX 770 requires around 190W (16A) max on the 12V rail. The PSU has 2 12V rails with 19.5A available on each and 1 with 19A (but watch the wattage max!).

Theoretically, you can run the 770 on just about any system with an available 396W and that much amperage on the 12V rail. Will a 770 work with this power supply, yes. Would I personally plug a GTX 770 into that power supply? No. It was designed for systems built around 10 years ago. This is evidenced by the available wattage on the 3.3V and 5V rails.

Onus has alluded to the fact and provided evidence the PSU is junk. You should heed this warning or you may end up ruining your PC altogether.

You need to upgrade your power supply if you value your components. You don't want to mess up a $350 video card because you ran it on a flawed $30 power supply.

 

[Ash_BMW]

Point taken, i will sell the cooler master 500 and purchase a better psu. Can you recommend one?

 

[Onus]

There are always deals to be had, but one safe choice would be the Antec Earthwatts EA-500D. Anything built by Seasonic will be good, as will Rosewill Capstone. Look for 500W-550W.

 

[ubercake]

Seasonic S12G 550W at $70:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151136

 

[Ash_BMW]

Since this PSU will be used for overclocking everything what is the minimum output i would need as i don't want to buy another one after this?

 

[Onus]

The one ubercake listed is an excellent choice. It will support your overclocking, no sweat.

 

[Ash_BMW]

What about Corsair CX 600W?

 

[Onus]

Nope. Initially it would be fine, but the Corsair CX line was built using inferior Samxon capacitors that do not like heat and are known for early failure. There are many worse (especially on a budget), but also too many that are better.

 

[ubercake]

You're going to get top-quality out of the Seasonic I recommended, though the Corsair CX600 will also be sufficient. That Corsair supply is built by Channel Well which is the CPU manufacturer that put Corsair on the map as a player in the power supply space with the TX series. I wouldn't hesitate to buy a PSU built by Channel Well as I had a TX950 that was one of Corsair's highest-rated and best-quality PSUs out there built by Channel Well.

 

[Ash_BMW]

I thought the CX series were built by seasonic, designed by corsair

 

[ubercake]

http://www.tomshardware.com/reviews/power-supply-oem-manufacturer,2913-5.html

Only the 400CX is built by Seasonic.

 

[Onus]

Some of the earlier "CX" were built by Seasonic, but all the newer ones (the last 2-3 revisions) are from CWT. CWT is hit or miss. I would not say "junk" by any stretch, but cost-cutting does not lead to quality. Kept cool, a CX-600 would be "acceptable;" anticipate getting 2-3 years out of it rather than the 5+ you might get from a Seasonic
(I'm going on six or seven years with my Delta-built SG-650).

 

[Ash_BMW]

Unfortunately the store has no seasonics in stock, well not in my price range. Would this be better than the corsair: http://www.scan.co.uk/products/550w-xfx-core-edition-p1-550s-xxb9-85-eff-80-plus-bronze-sli-crossfire-eps-12v-quiet-fan-atx

 

[ubercake]

That XFX PSU is built by Seasonic. Great choice.

 

[Ash_BMW]

And it will be fine to handle overclocking?

 

[ubercake]

It entirely depends on the overclock. It's not an exact science. You have some headroom to work with using the 550W. If you want to overclock higher than a few hundred MHz and also want to OC the GPU, you may need more. I'd recommend the XFX 650W in that case. If the CX600 is in your price range, it will give you some extra to work with, but you'll get the higher-quality build from XFX.