GPU-- 2 x Crossfire 270X or 290?

[bporotsky]

Hello,
I'm in the process of buying the parts for my first PC build. Here's what I have picked so far:
PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: AMD FX-8320 3.5GHz 8-Core Processor ($144.97 @ Amazon)
CPU Cooler: Noctua NH-D14 65.0 CFM CPU Cooler ($64.99 @ NCIX US)
Motherboard: Gigabyte GA-990FXA-UD3 ATX AM3+ Motherboard (Purchased For $74.99)
Memory: Kingston Fury White Series 8GB (2 x 4GB) DDR3-1600 Memory ($69.99 @ Amazon)
Storage: Crucial M500 240GB 2.5" Solid State Drive ($109.99 @ Amazon)
Video Card: Asus Radeon R9 290 4GB DirectCU II Video Card ($399.99 @ Amazon)
Case: Fractal Design Define R4 w/Window (White) ATX Mid Tower Case ($118.30 @ Mwave)
Power Supply: NZXT HALE90 V2 850W 80+ Gold Certified Fully-Modular ATX Power Supply ($133.98 @ Newegg)
Monitor: Asus VS247H-P 23.6" Monitor ($156.44 @ Amazon)
Wireless Network Adapter: TP-Link TL-WDN4800 802.11a/b/g/n PCI-Express x1 Wi-Fi Adapter ($38.57 @ Amazon)
Case Fan: Noctua NF-A14 PWM 82.5 CFM 140mm Fan ($22.70 @ Mwave)
Case Fan: Noctua NF-A14 PWM 82.5 CFM 140mm Fan ($22.70 @ Mwave)
Other: RGB Lights ($19.99)
Total: $1377.60
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-06-10 14:48 EDT-0400)

I was going to go with a 4 GB 290 DirectCU II, but on Newegg, the 2 GB 270X DirectCU II is on sale for $179 (after $10 rebate). I was wondering what differences there would be between a 290, and Crossfiring 2 270X's?
Since I'm going for a quiet build, would 2 270X's make a lot more noise?

Thanks

 

[BigBadBeef]

AMD STILL hasn't completely fixed their crossfire, it may have something to do that they're currently focusing on improving dual graphics efficiency... So a single card is a more efficient option here.

 

[damric]

When building from scratch, go with the single stronger GPU. When upgrading is when you think about SLI/CFX.

 

[bporotsky]

When building from scratch, go with the single stronger GPU. When upgrading is when you think about SLI/CFX.

OK, so I'll go with a 4GB 290 as opposed to 2 x 2GB 270x's.

Thanks