Worldwide graphics card shipments are expected to decline 30-40% sequentially in the second quarter as vendors are suffering from excessive inventories, according to sources from graphics card players.

Graphics card sales have been significantly impacted by Bitcoin's dropping demand recently, the sources said.

Graphics card players and channel retailers have suggested AMD and Nvidia cut prices to boost demand, but both GPU makers have instead focused on reducing their new GPU shipments to maintain profits and a balance between inventory and new shipments.

Trapped by existing inventories, most players' graphics card sales have been impacted since April, the sources noted.

Btw, miners are good source of used cards :-) Btw, it is mostly mining of other coins, not Bitcoin lately. But if you wantch around you can get good card and good discount.