Almost exactly a year ago, Samsung introduced GDDR6, capable of transmitting 24 Gbps per pin. Now, the company has completed the design of a next-generation graphics RAM called GDD7.
This product is up to 40 Gbps per pin for a total of 1.5 Terabytes per second, which is faster than GDDR6 at 1.1 Terabytes per second 32%.
The increased speed is due to the use of three-level pulse amplitude modulation (PAM3). For example, PAM3 is also used for USB4 and Thunderbolt 5. GDDR6X used in cards like Nvidia RTX 3090 and 3090 uses the associated PAM4 standard.
Anyway, besides being faster, GDDR7 is also 20% more energy efficient . Samsung has also developed a low operating voltage version of GDDR7, which will be used in power-constrained devices such as notebook computers.
The company has also taken other measures to combat heat – Epoxy Molding Compound (encapsulates RAM chips with low thermal resistance to EMC compared to EMC used in GDDR6 packages 24%, so more heat can be removed faster.
Samsung will send samples to its key customers later this year so they can start developing GDDR7-based device.