How much would it cost to build a desktop with the same specs?

[xero99]

Im planning on geting a lenovo y510p for £800, but might build a desktop instead so im wondering how much will a desktop with similar specs cost? Keep in mind im in the uk so would buy everything from aria pc (my brother say its the best for computer parts) Im not that experienced with building pcs so thanks a bunch.
Y510p specs:
Intel core i7 4700mq processor (2.4GHZ with 3.4GHZ turbo boost, 6MB cache)
16gb RAM
Nvidia geforce GT 750m 2gb gddr5
15.6" LED 1920x1080

 

[manofchalk]

Its a laptop, you simply cant build an equivalent desktop.
The real question is how much computer you can get for 800 pounds, which will carry you a fair way I think.

 

[xero99]

How much computer could i get for £700?

 

[manofchalk]

A fairly top end gaming rig if you sacrifice some bells and whistles.