2023-11-28 04:14:03
AMD’s Ryzen 7000X3D series processors use 3D V-Cache technology to greatly increase the capacity of L3 cache. Since the concept of cache is similar to system memory RAM, some players use special means to convert Ryzen 7800X3D into a RAM Disk. , and used CrystalDisk 8.0.4 to achieve a read performance of nearly 180 GB/s. Netizen @ultrawide219 shared on the , reading and writing performance of 163 GB/s. RAM disk on AMD Ryzen 7800X V-Cache(Results not mine) @AMD make this into an Optane replacement PLEASE pic.twitter.com/E7fVXjXJL5 — Albert Thomas – Cooling Reviewer (@ultrawide219) November 24, 2023 In fact, @ultrawide219 is According to the cracking method provided by another netizen @GPUsAreMagic, as early as February this year, the other party had used Ryzen 5 5800X3D in CrystalDisk 8.0.4 to obtain 182 GB/s sequential reading and 175 GB/s. The results are written sequentially. @GPUsAreMagic also recently conducted other tests on Ryzen 5 5800X3D, but the content of the benchmarks also confused him, because the processor’s L3 cache capacity is 96 MB, and he was informed by the system of the write burden of random writes. If it is too large, the test may not be completed. Judging from the results, all projects can be completed normally using the 16 MB test file. However, errors occur when using the 64 MB, 256 MB, and 1 GB test files. Only sequential reading and writing can be completed. However, the projects that can be completed when using the 2 GB and 8 GB files cannot be completed. It actually increased, making the items that can be tested appear irregular. Did some more testing, this time with random fill (I only used 0 fill because RND has too much write overhead, but was informed it can produce impossible results with ramdisks sometimes) – 5800X3DBut now I’m honestly even more puzzled than before ????@ ultrawide219 @itsHemu2K pic.twitter.com/4KdZz3mXdn — Nemez (@GPUsAreMagic) November 26, 2023 The current mainstream PCIe 4.0 M.2 SSD has the fastest speed of 7.4 GB/s, while the latest PCIe 5.0 M.2 SSD on the market is At 13 GB/s, the taillights of the L3 cache are not visible at all in comparison to the SSD. However, the maximum capacity of the Ryzen 7000X3D series cache is only 128 MB. It is mainly used as a temporary storage space for program instructions. It is not enough to be used as a system memory, let alone a storage device. However, this is a limitation of existing technology. AMD and Intel are already moving in the direction of increasing processor cache. Intel, for example, is expected to use Foveros packaging technology to combine up to 32 GB of LPDDR5X memory with Lunar Lake CPUs. The chips are packaged together, and it may be practical to change the cache to a RAM Disk.
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