The launch of GDDR6X memories served as a kind of intergenerational refresh, which certainly marked an important advance over GDDR6 memories, no wonder the memories were able to reach 24 GHz before GDDR6. However, this must be clear to us We will make a real leap with GDDR7 memoryfrom this The peak will be at 36 GHz.

The evolution that GDDR7 memories will see compared to GDDR6 memory will be enormous, to understand this, just remember that the latest implementation of GDDR7 reached 18 GHz in the Radeon RX 6000 and that the new revision that AMD will use in the Radeon RX 7900 XT and 7900 XTX shall not exceed 20 GHz. So we are talking about an increase of 18 GHz.

We know that GDDR7 memory will be much faster, and this will be reflected in much more bandwidth, which will allow us to use smaller buses without giving up a good level of performance, but it will not be the only thing. improvements that this new type of graphics memory will offer. According to Samsung, one of the world’s largest memory manufacturers, GDDR7 will be 25% more efficient than GDDR6thanks to the use of PAM3 (Pulse-Amplitude Modulation) signaling.

PAM3 technology operates with three bits per cycle, which represents an important difference from the two major current standards. GDDR6 memory works sun bits per cycleand GDDR6X memory works with two bits per cycleso the difference is obvious and quite large.

Thanks to GDDR7 memory it will be easier than ever to break the terabytes per second mark without having to use big buses. For example, with a 320-bit configuration and next-generation GDDR6 memory at 20 GHz, we would have a bandwidth of 800 GB/s, while with a 256-bit bus and GDDR7 memory at 36 GHz, we would achieve a bandwidth of 1,152 GB. /s, i.e. 1,152 TB/s.

If we combine GDDR7 memory with a 384-bit bus, the bandwidth increases to an impressive 1728 GB/sand with a modest A 128-bit bus would have a bandwidth of 576 GB/s. To better contextualize these numbers, I remind you that the GeForce RTX 3070 with GDDR6 memory and a 256-bit bus has a bandwidth 448 GB/s.

We don’t know when this new standard will be used, but I think that it will most likely end up being reserved for the next generation of graphics solutions, i.e. for successors to GeForce RTX 40 and Radeon RX 7000.