Some have created RAM disks with AMD 3D V-Cache technology and seen write speeds up to 175 GB/s – AMD

This “stack” structure allows the processor to access a very large amount of latent or cache memory resulting in rapid acceleration of certain applications.

What about using the extra L3 cache as a RAM disk? Apparently, it is possible to create a RAM disk where the specific SRAM behaves as a storage unit although in this particular case we are not talking about something that has any real application. You see, a RAM disk that takes advantage of the latent L3 memory of a processor like the AMD Ryzen 7 5800X3D can only be achieved by exposing L3 to the CrystalDiskMark benchmark. There is no other application in the real world that can do this the way CrystalDiskMark does. According to user Nemez on the social network The values ​​are SEQ 256 KB, Queue Depth 1, Threads 16, and data fill is zero (0) instead of random.

The results of this experiment were impressive, as the access or cache time may be small in quantity but it is extremely fast, helping the processor process data much faster. With an AMD Ryzen 7 5800X3D processor in the computer, RAM disk speeds were over 182 GB/s for reading and over 175 GB/s for writing.

In another test, the results of which were also published on

It’s worth noting that, again, CrystalDiskMark tested micro-allocations between 16 MiB and 32 MiB, so don’t expect to find apps that can take advantage of this feature today.