These cards were used to Mine Ethereum for ~2 years, and have then sat on a shelf until now.

These cards have had the custom Copper Shim install for memory. This card's default configuration has the VRAM having NO contact with the main assembly's Heatsink. This results in immediate themal throttling of these cards due to the VRAM overheating. A Thermal pad + a thin copper shim are installed, which are the PERFECT height with the GPU Core, to make contact with the heat assembly and pass just enough heat, for no thermal throtting to occur.

VulMem Test: Eight successful passes - NO ERRORS Furmark 1080P: 1.5 hours sustained load, NO HOT SPOTS, NO ARTIFACTS, STABLE!!