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GDDR5 FAQs

GDDR5(3)
How does Graphics DRAM differ from regular DRAM?
Graphics DRAM is a category of DDR SDRAM designed to handle very large bandwidth requirements. Unlike standard DRAM, graphics DRAM is typically soldered down on the same PCB as the SoC and always supports 32 DQs per memory component. Besides graphics cards and game consoles, graphics DRAM is being used in high-bandwidth applications like networking, automotive and high-performance computing.
What features and functions does GDDR5 have versus previous generations of Graphics DRAM?
GDDR5 provides higher densities, lower external voltage and more than twice the memory bandwidth compared to its predecessor, GDDR3. GDDR5’s 4X relationship between data rate and the CK clock is unique compared to the 2X relationship in DDR3 and GDDR3.
Is GDDR5 a direct replacement for GDDR3?
No, GDDR5 is not a direct replacement for GDDR3 due to package size differences. GDDR3 has a 136-ball BGA package while GDDR5 has a 170-ball BGA package.