what are the differences between DDR3 and DDR5 graphic cards

Solution
DDR3 is akin to system RAM, whereas GDDR5 is specific to graphics cards.

GDDR5 has a much faster bandwidth speed, which is ideal for gaming as textures are constantly being changed to reflect what's happening on-screen. The net result is higher frame rates and less stuttering.
DDR3 is akin to system RAM, whereas GDDR5 is specific to graphics cards.

GDDR5 has a much faster bandwidth speed, which is ideal for gaming as textures are constantly being changed to reflect what's happening on-screen. The net result is higher frame rates and less stuttering.
 
Solution