 "Sapphire RADEON R7 240 with Boost graphics card - Radeon 4 GB" " Sapphire GB 11216-02-20G Video Cards CDWG.com
"The SAPPHIRE R7 240 with Boost now has the latest DDR3 memory clocked at 1800MHz effective, and runs with a core clock speed of 730 MHz which with PowerTune Dynamic Boost rises to 780 MHz on the engine." 
 "Sapphire Radeon R7 240 Graphics Card"@en Card LN53955 - 11216-02-20G | SCAN UK"@en
"4GB Sapphire Radeon Radeon R7 240, 1800MHz GDDR3, GPU 730MHz, Boost 780MHz, 320 Streams, D-Sub/DVI-D/HDMI                "@en 