Help me decide: Sapphire r9 270x 4GB OC Crossfire

[techincs132]

Hi guys!

A month ago I bought this compurer:

-Sapphire Radeon R9 270X Dual-X with
Boost & OC, 4GB GDDR5

-AMD FX-6300 @4.3Ghz , cooler master 212evo

-Crucial Ballistix Sport 8GB DDR3 Kit
1600MHz

-ASUS M5A97 R2.0
Sockel AM3+ ATX

-WD Blue Desktop
WD10EZEX 1TB

-Crucial SSD MX100
256GB

-Corsair CX-Series CX500M 500 Watt
ATX 2.3


Atm, I get 45760 fps (somewhere around there) in BF4 all on ultra with Vsync nad AAx4. I have it OC'd at core: 1135 and memory:1500.

So now I want to upgrade to Crossfire the same graphic card. I know that I need better PSU, but I don't know if my CPU will bottleneck and if do I need more/better RAM? How much PSU (W) do you suggest?

Thanks for help

 

[reedo_43]

I believe your cpu will bottleneck as it is a pretty good match as is.

 

[techincs132]

So what does that mean?

 

[madmatt30]

If you're stable at 4.3ghz then I don't believe you would bottleneck with 270x crossfire personally.
However with having to replace the PSU to run cross fire I'd honestly look at selling your current card & getting a single 280x which will be fine on your current PSU.
Crossfire doesn't scale that well im any games - youd generally get only a slight increase over a 280x at the expense of huge power draw & having to purchase a new $$70 psu.
You can pick up a 280x for the same price as another 270x+PSU plus sell your current card for $90-$100 & you're better off IMO.

 

[reedo_43]

You asked if your cpu would bottle neck. I said more than likely. It means you may not get more fps than you already have because you cpu is being taxed already. It is a bit weak. get this psu. It is on sale with a $20.00 rebate. $39.00 for a high quality 750watt gold plus certified. Your ram is fine but don't think you will reap the benefits of crossfire unless you upgrade you cpu to a fx8350.

http://www.newegg.com/Product/Product.aspx?Item=N82E16819113284

http://www.newegg.com/Product/Product.aspx?Item=N82E16817182073

 

[techincs132]

I've read that Xf r9 270x get the same fps as r9 290 does.

this is what I want to buy:

https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xpa1/v/t35.0-12/10819734_10203922924205722_569198786_o.jpg?oh=054eb01bf1fb3baff2ce1c065bea84da&oe=5478BCFB&__gda__=1417148266_5cc5fff1ed8c81abf43a4c93968196c1

 

[madmatt30]

^ in theory yes - in real world no - in well optimised crossfire games you'll get a 60-70% performance boost.
These titles for a start
Farcry 4
Assassins creed unity
Dead rising 3

Have piss poor crossfire scaling - a 280x will perform better than crossfire in these cases (& many others)
You're looking at spending 280 euroes to get crossfire up & running.

If you buy this
http://www.computeruniverse.net/products/90569946/vertex3d-radeon-r9-280x-v2-uefi.asp

& sell your current card for say 120 euros your outlay is only 90 euros for a good 30-40% performance increase - it will run on your current PSU & makes a lot more sense to me.

 

[reedo_43]

Good point but I think his psu is a weak link here. cx series is a tier 3 psu.

http://www.tomshardware.com/forum/id-1804779/power-supply-unit-tier-list.html