 "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." 
 "Asus Radeon RX 460 Dual OC 2048MB GDDR5 PCI-Express Graphics Card"@en "▷ Asus Graphics… | OcUK"@en
"DUAL-RX460-O2G, Boost Clock: 1224MHz(1244MHz in OC mode), Memory: 2048MB 7000MHz GDDR5, Stream Processors: 896, VR Ready, FreeSync Ready, 3 Years Warranty"@en 