When it comes to me regarding video card expenses, I never attempt to buy the Prom Queen but rather focus on the Wall Flower to balance loss investment / descent performance.
No doubt AIB MFgr's will build effective air coolers to enhance the 290/X's Performance and Thermal Cooling Characteristics but I will not be surprised if their new air coolers might cost more then their Haiti GPU Solutions.
Other then for the alleged short supply of Hawaii chips an other reason for the delay in AIB releases might be due to further study of the Thermal Character's of the 290/X GPU before tooling up for final productions.
I see a Reference Gigabyte Radeon R9 290 947MHZ 4GB 5.0GHZ GDDR5 2xDVI HDMI DisplayPort PCI-E Video Card listed at $485.42 "NOT AVAILABLE" on NewEgg.CA - Surely hope that price is not going to reflect that Up Mark for that Card here.
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i7 2700k/ASUS P8Z68-V Pro Gen3/Corsair H110 AIO (running @ .996v/1600Mhz to 1.376v/4600Mhz 24/7 between 36 to 67C), 4 x's 4GB sticks of Samsung MV-3V4G3D-US DDR3 running at 1.34v/1866Mhz 9-9-9-24 1T with 4GB's assigned to a RAMDisk drive to handle Win7 64 Bit Sluff and negate writes to the SSD, Samsung 840 Pro 256 SSD, 2 x's WD5001AALS HDD's in Raid-0, 1 x's WD1002FAEX 1TB, ASUS DRW-24B1ST DVDRW, Hauppauge WinTV HVR-1250 PCIe, XFX 850W Pro Black Black Edition modular PSU, eVGA e-GeForce GTX 280, Fractal Design ARC Midi R2 case, QX2510 Samsung PLS 2560x1440 res display at 120Hz.