SuperMicro SuperStorage 6047R-E1R72L 72*3.5" 4U 2*E5-2630/128GB/X9DRD-7LN4F-JBOD
Chassis alone retails @ 2x that, let alone 128GB RAM 2x E5s, motherboard, etc...
Retail infO: SSG-6047R-E1R72L Supermicro SuperStorage Server Dual LGA2011 1280W 4U Rackmount Server Barebone System (Black) - Server Barebones - SuperBiiz.com
If I was looking for density this appears to be a VERY affordable answer
Chassis alone retails @ 2x that, let alone 128GB RAM 2x E5s, motherboard, etc...
Retail infO: SSG-6047R-E1R72L Supermicro SuperStorage Server Dual LGA2011 1280W 4U Rackmount Server Barebone System (Black) - Server Barebones - SuperBiiz.com
If I was looking for density this appears to be a VERY affordable answer