Sapphire r7 240 1gb gddr5 dual dvi hdmi pci e graphics card the sapphire r7 240 1gb with boost now has the latest gddr5 memory clocked at 4600mhz effective and runs with a core clock speed of 730 mhz which with powertune dynamic boost rises to 780 mhz on the engine specification display support 2 x maximum display monitors support output d subvga 1 x hdmi with 3d 1 x dual link dvi d gpu 730boost780 mhz core clock 28 nm chip 320 x stream processors video memory 1024 mb size 128