ssamramg :
yes. but the gainward's memory is clocked at 2700 MHz and the zotac one has 5600MHz. so which one?
They're just reporting the frequency differently, Zotac is telling you the effective memory frequency of 5.6GHz because it's GDDR5, meaning it's the base frequency quadrupled (1.4GHz), whereas Gainward for some reason states the doubled base frequency of 1350MHz, which would equal an effective speed of 5.4GHz. That difference could easily be made up by overclocking the memory, so don't let that influence your decision, choose whichever one you want.