While what your saying is true and I personly would not buy this pc as I like to build my own and only use very high end parts for most people this pc would give a massive upgrade at a relatively low cost.
Quick price up on Amazon you'd be looking at £391. It's the locked 3770 CPU = £228 ASRock B75 Pro3-M = £51.14 It has only 4GB of unbranded 1333Mhz Ram = £25 22x CD DVD drive = £12 Generic 500GB SATA 2 HDD = £30 Generic 500W PSU = £15 Similar LED case £30 Even thought the price isn't that bad, it's not a good combination. Anyone with any sense wouldn't put an i7 3770 with 1333Mhz memory and an unbranded PSU. You'd also get way better value out of a larger hard drive, but again if you going for i7 levels of performance you'd surely want an SSD.
Priced this pc on scan @£402 and this is built for you