http://youtu.be/uDx4_K8sFFY

In this episode the BBT takes things to a different level. We take 6x R7 240 sapphires and put them in one of our 6 GPU Open Air Rigs to see what kinda hash/power ratios we can achieve from a sub 50.00 card. To our surprise, these are amazingly efficient and effective considering their size and price point. (and of'course zoomed in shots of CG miner show us rocking feathercoin!)

Base configuration used in this build:

BBT 6 GPU Open Air Mining Rig (v.2.0)

Intel G3220 Haswell Dual Core Pentium CPU

5x 1x by 16x USB risers (powered)

4gb Corsair Ballistix DDR3 12800

Hitachi 250GB 7200RPM 2.5 HDD

6x Sapphire R7 240 /w Boost

1x Corsair CX600 *and a separate build with a OEM Sparkle 420w

Using settings

-I 17 -w 256 -g 1 --thread-concurrency 8192 --gpu-powertune -10

@248w AC from Wall (106k/h per card)

Best Settings used:

-I 17 -w 256 -g 1 --thread-concurrency 8192 --gpu-engine 950 --gpu-memclock 1000 --gpu-powertune 10

@ 271w AC from Wall (118k/h per card)

Total build cost should be under $550.00 out the door for a 6 card rig if you build your own rig and order cheapest avail risers. In this build we used Windows 8.1 Enterprise Evaluation and default windows (update) found drivers. Additionally we used CGMiner 3.7.2

Upcoming next episodes include 12x MSI Twin Frozr build, Pair of 750ti builds, single card and 6 card rig in addition to the Mineral Oil Mining Rig we have been talking about for two months.