GDDR6X graphics cards
prices on 319 modelsGDDR6X
— enhanced version of GDDR6 (see related paragraph) released in Fall 2020.According to the creators, it is the fastest graphics memory at the time of release. One of the key updates is the use of the so-called multi-level PAM4 modulation, which allows you to transfer 2 bits of data per cycle (versus 1 bit for its predecessors). Due to this, the bandwidth of GDDR6X can reach 21 Gbps per pin and 1 TB / s for the entire memory block (versus 16 Gbps and 700 Gbps, respectively, in the previous version). This type of memory is great even for the most powerful modern graphics cards, but it also costs accordingly.
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