The Sapphire R9 290X Vapor-X OC is one of the most recent AMD Radeon R9 290X video cards to come to market. The Radeon R9 290X became the flagship single-GPU card for AMD nearly 8 months ago (released in October 2013) and it has been a popular card for both gamers and Litecoin miners. While the Sapphire R9 290X Vapor-X OC was arguably late to market, it might very well be one of the best Radeon R9 290X video cards due to the custom Vapor-X/Tri-X GPU cooler, 10-phase power design and one of the highest factory overclocks that we have seen on any Radeon R9 290X 4GB graphics cards...