#Samsung reveals #GDDR7 memory with #PAM3 signalling and 36 Gbps speeds. 2x faster than most GDDR6 modules
Via
https://twitter.com/IanCutress/status/1599451187509530624
RT @IanCutress@twitter.com
I'm not attending this one, but here's a fascinating slide. Samsung confirms that GDDR7 uses PAM3 signalling.
NRZ is 0 or 1: 1 bit/cycle.
PAM3 is -1, 0, 1: 3 bit/2 cyc
PAM4 is 0, 1, 2, 3. 2 bit/1 cyc
80G Thunderbolt will also use PAM3. https://www.anandtech.com/show/16858/intel-executive-posts-thunderbolt-5-photo-80-gbps-and-pam3-then-deletes-it
๐ฆ๐: https://twitter.com/IanCutress/status/1599451187509530624