Gigabyte GA-770T-D3L - £52.52
AMD Athlon II X2 250 - £43.50
4x 1GB XFX HD 5870 - £142.78 each (£571.15)
Corsair HX850W - £121.98
Kingston 2GB 1333MHz DDR3 RAM KVR1333D3N9/2G - £12.85
3x 120mm Coolermaster SickleFLow 2000rpm Blue LED Quiet Case Fan - £5.39 each (£16.16)
8GB Kingston DTIG3/8GB USB DataTraveller G3, USB2 Pen Drive - £7.70
4x Risers 1x - £5.69 (£22.76)
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Total = ~£850
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Custom made wooden box/case with Neoprene Rubber strip where the cards are resting on the plank as to absorb vibration.
Nice work there. I like the craftsmanship shown.