About graphic memories GDDR7 we already wrote Micron plans them for next year, Samsung then talked about switching to PAM3 signaling and should reach speeds of up to 36 Gbps, which would be half the current 24 Gbps of GDDR6X memories. It’s right now Samsungwho now represents the chips GDDR7 and it is a fact that it really switches to PAM3 (Pulse Amplitude Modulation) signaling. This will allow 50% more data to be transferred per cycle than NRZ (Non Return to Zero) with GDDR6, on the other hand, PAM4 will transfer even twice as much, but is again significantly more sensitive to noise. PAM3 is thus a golden mean.
However, when it comes to speed, we have to let go of the appetite for 36Gbps chips from the beginning, and Samsung presented “only” 32Gbps models. But even that is a third more than 24 Gbps, and with a 384-bit bus, it will enable a throughput of 1.536 TB/s (today’s cards have a maximum of 1.152 TB/s). According to Samsung, the new GDDR7 chips have 20% better efficiency and reduced voltage variants will be available for notebooks, thermal resistance has been reduced by 70% compared to GDDR6. They will find use not only in gaming GPUs, but also in workstations, HPC, for training AI or in autonomous vehicles. But the question is when that will happen. We have to wait a little longer for the new GPUs.
2023-07-20 14:12:24
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