What is GDDR4 in the video card?

GDDR4 belongs to double data rate memory, through the use of the cutting-edge technology of the data bus inversion and multi-preamble technology, so that its relatively GDDR3 operating efficiency increased by 56%, The use of GDDR4 video memory can achieve higher operating frequency and stronger actual performance.

However, the DDR4 delay is greater than the DDR3, regardless of DDR3,DDR4, as long as the frequency of high performance.

The so-called delay is a high frequency DDR must have something, for example, DDR1 delay is the lowest, than the DDR3,DDR4 are lower, but you use DDR1 Mody?

The impact of latency on the performance of the graphics card can be largely ignored. The same frequency graphics card is naturally a good delay, the different frequency is the good high-frequency.

But DDR4 may not be popular, because immediately we will enter the DDR5 era.