Nvdia Gtx 660

debayanmitra · Mar 22, 2014

Hello guys, i will buy a nvidia gtx 660 next month. I have a cossair smps of 450 watt. Is this power supply is enough for the grphics card?

zeph_yr · Mar 22, 2014

Can you give us the exact model? It isn't the wattage that's important, it's the amperage.

fatboyslimerr · Mar 22, 2014

Why not go for a GTX 750 Ti (Palix StormX or Gigabyte Ghz one) instead as it has much lower power consumption and the PSU won't be such a big deal. The heavily overclocked models I suggest have similar performance to GTX 660.

debayanmitra · Mar 22, 2014

this is the link to my model http://www.hardwareinsights.com/wp/wp-content/uploads/2013/04/Box-Bottom.jpg

fatboyslimerr · Mar 22, 2014

34A @ 12V is the important information. I would seriously consider my suggestion regardless of this info.
Lower power consumption means cooler operation, more overclocking headroom and lower energy bills!

zeph_yr · Mar 22, 2014

It will not be able to run a GTX 660. 660's require 42 amps on the +12v rail, your power supply can deliver a max of 34.
Your options:
- Get a new power supply and graphics card (expensive)
- Get a GTX 750 (less expensive than a 660, but less performance)
- Get an R9 270 (this will get you comparable performance to the 660 and cost about the same. http://www.newegg.com/Product/Product.aspx?Item=N82E16814127769 )

debayanmitra · Mar 22, 2014

ok let me see what i can buy but with my smps will it be able to run gtx 660?

zeph_yr · Mar 22, 2014

debayanmitra :

No, your power supply does not have enough amps to run a GTX 660.

debayanmitra · Mar 22, 2014

So a gtx 750 or r9 270 will be able to run on my smps(cossiar vs 450) ?

zeph_yr · Mar 22, 2014

debayanmitra :

Correct

debayanmitra · Mar 22, 2014

Thanks guys for the information i will now kick ass of that salesman who told me that gtx 660 will be able to run on vs 450

fatboyslimerr · Mar 22, 2014

Or GTX 750 Ti either Palit or Gigabyte version with base clocks over 1.2Ghz. Why get a 750 when 750 Ti has similar performance to the card you originally intended to get but at much much much lower power consumption?

mr91 · Mar 22, 2014

If you have an intel processor that is under 100 watts and you don't have multiple hard drives or a complicated set up it will work however not ideal.

mr91 · Mar 22, 2014

I suggest you buy a higher end psu for game such as the Corsair RM series

debayanmitra · Mar 22, 2014

Hey guys..
this is the gtx 660 spec link http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-660/specifications
here it says Minimum System Power Requirement : 450 W.
So it is just a recommendation ??

cst1992 · Mar 22, 2014

zeph_yr :

That information seems to be incorrect.
Look here:
http://www.game-debate.com/hardware/?gid=591&graphics=GeForce%20GTX%20660
and now here:
http://www.game-debate.com/hardware/index.php?gid=880&graphics=GeForce%20GTX%20780
42 amps is the recommendation for a gtx 780, not a 660.

Anyway, it doesn't make sense. 42 amps on the +12V rail equates to 504W. That means he'll need a 550W power supply to be able to run the 660? No way.
The 660 is a 140W card. That means it only uses 11.66A of current. Assuming the rest of the system uses 20A(which is the rated current in most prebuilt systems) it makes a total of 32A. So a 34A model power supply should run a 660 fine.

debayanmitra :

Don't. He's right.

However the VS450 is a poor power supply. You should go for a better power supply such as the CX500 which is also rated at 34A. You could go for RM450 but those are higher-end models and cost similarly, around double the lower end models.

mr91 · Mar 22, 2014

Even a cx is not a great power supply unless you are using it for an office computer. I would get at least a TX series power supply for gaming.

mr91 · Mar 22, 2014

If the guy has a power hungry amd cpu with 32 gigabytes of ram & 3 mechanical hard drives the vs 450 will not be enough!

cst1992 · Mar 22, 2014

BTW you can check how much wattage you need in your power supply here:
http://extreme.outervision.com/psucalculatorlite.jsp

A standard system with a i5-2400 processor, 1 hard drive, 1 SSD, 3 fans, 4 USB devices and 4 RAM sticks with the GTX660 yields
416W. So a VS450 has 408W on the +12V rail and will power this rig just fine(not all components run on the +12V rail).

mr91 · Mar 22, 2014

I had a cx 600 hundred and it power my gtx 780 with an Intel platform with 2 ssd's however it wasn't ideal.

cst1992 · Mar 22, 2014

mr91 :

I agree with both of your points. But many guys don't have that configuration, and a CX level PSU is not that expensive as compared to the VS series, but the higher end models are much more expensive per watt.

cst1992 · Mar 22, 2014

mr91 :

It wouldn't be. It was running under high load, not medium load like most PSU's are(generally 780's have 750+ watt PSU's with them).

mr91 · Mar 22, 2014

Tx isn't very expensive.

mr91 · Mar 22, 2014

That isn't accurate my system uses under 450 watts with a 780 ti and 3570k.

cst1992 · Mar 22, 2014

mr91 :

It is if you're looking at price points of these PSU's and local PSU's.

Nvdia Gtx 660

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