XFX Radeon R7 250 GDDR5
1000/1050 MHz GPU, 1 GB GDDR5 a 1150 MHz (4600 MT/s)

Sapphire Radeon HD 7730 GDDR5
800 MHz GPU, 1 GB GDDR5 a 1125 MHz (4500 MT/s)

Reference Radeon HD 6670 GDDR5
800 MHz GPU, 1 GB GDDR5 a 1000 MHz (4000 MT/s)

Gigabyte Radeon HD 6670 DDR3
800 MHz GPU, 1 GB DDR3 a 900 MHz (1600 MT/s)

Reference AMD Radeon HD 7750
800 MHz GPU, 1 GB GDDR5 a 1125 MHz (4500 MT/s)

Gigabyte Radeon HD 7770
1000 MHz GPU, 1 GB GDDR5 a 1125 MHz (4500 MT/s)

Zotac GeForce GT 630 GDDR5
810 MHz GPU, 1 GB GDDR5 a 900 MHz (3600 MT/s)

Reference Nvidia GT 640
900 MHz GPU, 1 GB DDR3 a 891 MHz (1782 MT/s)