Alienware X51 taking components out and putting in new case.

[Sloop]

Hello I am going to take everything out of my Alienware X51 and putting it in a new case.

The case is the Fractal Design R4.

I am also adding a 750w psu which is the: XFX Pro Black Edition 750W Full Modular Power Supply.

I am also adding a 780ti.

Can anyone tell me if this is ok, I just need to be sure what I am getting for the upgrade.
Thanks in advance.

 

[Sloop]

I think its the same if you look closely, there is a separation between the two circuit boards. I think some of it is to do with the PSU etc. You can see the various power connectors coming off of it. (everything is internal with the X51 I believe, and it's too small to fit a regular PSU)

*edit* no wait, there is a power brick as well, but certainly some of the PSU is internal.

Thank you for replying, I have took what you have recommended into consideration but I simply cannot sell the alienware x51 because I have missing and upgraded parts. I am most likely going to be doing what I thought of because I have no other options really. Thanks again.