While I do agree with this, I agree more with the people who say to save the $20 US price difference between the two, and either spend it on upgrading the size of your OS SSD, or upgrading your dGPU. At the lower end of the scale, $20 more can get you some sizable performance upgrades in GPUs, or can almost pay for doubling your SSD size from 128GB to 256GB.
Except going for an X4 860K and a £40 dGPU will cost £95,so you save £30.
The X4 860K lacks an IGP and even a Celeron and a £40 dGPU is not going to be any cheaper or always even any faster.
I looked at some prices from Ebuyer which is one of the biggest computer parts retailers in the UK.
For instance the cheapest Celeron is the G1840 in the UK:
http://www.ebuyer.com/629961-intel-...-l3-cache-retail-boxed-processor-bx80646g1840
An R7 240 costs around £45:
http://www.ebuyer.com/659887-xfx-r7-240d-core-2gb-ddr3-vga-dvi-hdmi-pci-e-low-profile-r7-240d-clf2
The total is £80. The R7 240 is actually only a 320 shader part rather than the 384 shader IGP in the A8 7600,so is probably actually slower.
The A8 7600 is £69:
http://www.ebuyer.com/657970-amd-a8...l2-cache-retail-boxed-processor-ad7600ybjabox
I am sure you can get the bits a tad cheaper on offer if you shop around,but in the end for similar performance you still spend more rather going with an APU in that case.
Now if you do intennd to spend like £90,I am sure you can get a better card with the G1840 which have better graphics performance,but I always found SKUs like A6 3670K,A8 5600K and A8 7600 which were around £55 to £70 the only APUs worth considering for a desktop build.
For some more basic general builds which probably are only going to run something like DOTA2 or LoL they seem to fit the build quite well IMHO.