Intel® Core™ i5-6400 processor Quad-core 2.70 GHz
Nvidia® GeForce® GTX 970 - 4GB VRAM
8 GB, 2133MHz DDR4 SDRAM
Storage : 2 TB HDD
OS: Windows 10
I purchased the same computer (bar the graphics card which is a GTX 950) on Black Friday for £449 here: http://www.hotukdeals.com/deals/acer-predator-g3-gaming-desktop-pc-g3-710-449-black-friday-2558506
I found this one on laptopsdirect yesterday (for £499) and has now gone down again to 358.97! It is refurbished but it's grade A1 so it can't be too bad I suppose?
If it was me I would cancel my order with Acer and buy it here, but you can only cancel within 30 minutes after placing the order. Refund process and sending it back to them seems like a hassle too.