Radeon R9 280X, what wattage?

[Guest]

I been looking to get a Radeon R9 280X how ever I am very uncertain on what PSU i need to have. I have see the recommended Wattage run from 500w to 800w, and then there are the cards that don't say the recommended PSU. This is a concern for me since I only have a 675w PSU. Can someone clear the air? Thank you for any information. Also any recommendations for a GPU are helpful, looking at around $350-450.

System Specs:
GPU: HIS Radeon HD 7850 2gb GDDR5 , (http://www.newegg.com/Product/Product.aspx?Item=N82E168...)
Mobo: ASRock 970 Extreme3, (http://www.newegg.com/Product/Product.aspx?Item=N82E168...)
PSU: Thermaltake 675W, (http://www.newegg.com/Product/Product.aspx?Item=N82E168...)
CPU: AMD Fx-8350 4.0GHz 8-Core Desktop Processor, third party heatsink
RAM: G.SKILL Ares Series 8GB (2 x 4GB) 240-Pin DDR3 1600,
Case: http://www.newegg.com/Product/Product.aspx?Item=N82E168..

 

[Prithwi2050]

What is the brand of that PSU which you have? Also check whether it has got an 80 PLUS Bronze certficate? At present the GTX 770 is cheaper than the R9 280X since that BITCOIN issue surfaced. You can actually get a GTX 770 with aftermarket cooling solutions at the price of a reference R9 280X board. And also the GTX 770 is quite a bit(1-10%) faster than the 280X depending on the game.

 

[Guest]

What is the brand of that PSU which you have? Also check whether it has got an 80 PLUS Bronze certficate? At present the GTX 770 is cheaper than the R9 280X since that BITCOIN issue surfaced. You can actually get a GTX 770 with aftermarket cooling solutions at the price of a reference R9 280X board. And also the GTX 770 is quite a bit(1-10%) faster than the 280X depending on the game.

My PSU is Thermaltake and it does have 80 plus bronze. How well can/will the GTX 770 run newer games, like Battlefield 4?

 

[Prithwi2050]

What is the brand of that PSU which you have? Also check whether it has got an 80 PLUS Bronze certficate? At present the GTX 770 is cheaper than the R9 280X since that BITCOIN issue surfaced. You can actually get a GTX 770 with aftermarket cooling solutions at the price of a reference R9 280X board. And also the GTX 770 is quite a bit(1-10%) faster than the 280X depending on the game.

My PSU is Thermaltake and it does have 80 plus bronze. How well can/will the GTX 770 run newer games, like Battlefield 4?

Battlefield 4: http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659-6.html

Crysis 3: http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659-8.html

Bioshock Infinite: http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659-7.html

Arma III: http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659-5.html

Metro Last Light: http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659-9.html

Skyrim:http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659-10.html

And your PSU is just fine for any GPU. Don't worry..

 

[Guest]

What is the brand of that PSU which you have? Also check whether it has got an 80 PLUS Bronze certficate? At present the GTX 770 is cheaper than the R9 280X since that BITCOIN issue surfaced. You can actually get a GTX 770 with aftermarket cooling solutions at the price of a reference R9 280X board. And also the GTX 770 is quite a bit(1-10%) faster than the 280X depending on the game.

My PSU is Thermaltake and it does have 80 plus bronze. How well can/will the GTX 770 run newer games, like Battlefield 4?

Battlefield 4: http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659-6.html

Crysis 3: http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659-8.html

Bioshock Infinite: http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659-7.html

Arma III: http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659-5.html

Metro Last Light: http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659-9.html

Skyrim:http://www.tomshardware.com/reviews/radeon-r9-290-review-benchmark,3659-10.html

And your PSU is just fine for any GPU. Don't worry..

Now forgive my ignorance but on Newegg for this GPU it says "600 watt or greater power supply with a minimum of 42 amps on the +12 volt rail.", what does that mean?

 

[lonewolf7]

First of all what Thermaltake ? What is the model of it ? Usually Thermaltake's PSU's are crap, and not a trusted unit either. I wouldn't recommend that.

And to answer your question : The PSU must have 600W of power, and it should have 42 Ampere of current running on +12V rail.

 

[Prithwi2050]

PSUs have different voltage rails inside them. They are +3.3V, +5V, +12V( one or more than one rail), -12V, +5Vsb. These rails feed the various wires which connect to different components in the cabinet. A 280X requires about 250W at peak load which needs roughly((250-75)/12=14.6A from the two 8 pin connectors it has got(75W are avaiable from the PCI e slots). But the +12V rails also feed the CPU and other components so they make a safe estimate of say 42 amps in your case for accommodating the 280X. If you don't understand all this, trust me your PSU will work just fine..