There are different versions of synchronous dynamicrandom-access memorysuch asDDR3 RAMandDDR4 RAM.
What Is GDDR5?
First of all, what is GDDR5SDRAM?
It is a punch in of GDDR SDRAM.
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GDDR5 also adopts 8-bit wide prefetch buffers like GDDR4 and DDR3 SDRAM.
GDDR5 SGRAM meets the standards proposed by JEDEC in the GDDR5 specification.
However, it can open two memory pages at once, thus simulating the dual-port characteristics of otherVRAMtechnologies.
GDDR5 works with two different clock types.
WCKs operating frequency is twice the frequency of the CK.
During the initialization and training sequence, CK and WCK are phase aligned.
This alignment allows read and write access with minimal delay.
GDDR5X
In January 2016, JEDEC standardized GDDR5X SGRAM.
While GDDR5 only has a double data rate mode with 8N prefetch.
GDDR5X also uses 190 pins per chip (190 BGA).
In contrast, the standard GDDR5 has 170 pins per chip (170 BGA).
