The bundle has been priced at $1,600, with the X51 valued at $1,200, meaning there’s a $200 off of the Oculus Rift’s price tag. The official Alienware website has placed the specs of the X51, and it will feature the following: 

Intel® Core™ i5-6400 NVIDIA® GeForce® GTX 970 with 4GB GDDR5: VR ready 8GB Dual Channel DDR4 at 2133MHz 1TB (64MB Cache) 7200 RPM SATA 6Gb/s 

The whole system will run Windows 10 and can be bought on its own without the Oculus Rift. There is also a small grey note on the Alienware website saying:

Whether this means more powerful systems will be bundled with the Rift is unknown, but it seems likely. 

Both Azor and Lackey have also defended the recommended specs for the Rift saying that we simply cannot compare VR graphics to monitor graphics as texturing and filters used on non-VR games don’t necessarily work with VR games. 

Alienware has Announced an Oculus Rift bundle - 4