One member of the french forum blenderclan.tuxfamily.org has built a setup with two goals: performance and price.
- GTX Titan: ~ 1000 euros
- six GTX 750: ~ 750 euros
- GTX Titan: 11 min 15
- six GTX 750: 3 min 9
- GTX Titan: 250W
- six GTX 750: 257W
As you can see, the GTX 750 render farm is faster and cheaper than a single GTX Titan.
What’s more, this render farm is also an excellent mining setup!
Hereunder, the comparison between a PC tower and the render farm: