Fanatic turns AMD's V-Cache into 182 GB/s RAMDisk storage
Whereas trendy PCIe 4.0 and PCIe 5.0 SSDs are greater than quick sufficient for at the moment’s duties, there may be at all times a drive to make storage quicker and push the bounds of PC expertise. For years, PC customers have used RAMDisk expertise to create ultra-fast storage mediums, utilizing system reminiscence to create quicker, albeit risky, storage areas. Now, Ryzen 7 7800X3D customers are taking this idea to a brand new stage by making a 3D V-Cache RAMDisk. An X consumer referred to as Nemez (by way of Tom’s Hardware) was the primary to create a “CacheDisk” utilizing an AMD Ryzen 7 7800X3D processor. Utilizing very particular settings in CrystelDiskMark, Nemez was in a position to create a RAMDisk throughout the processor’s L3 V-cache. This allowed them to create a RAMDisk that might ship insane 182GB/s efficiency ranges throughout the SSD testing software. For context, at the moment’s quickest PCIe 5.0 SSDs (like the Corsair MP700 PRO that we recently reviewed) sometimes ship 12GB/s speeds on this take a look at. That’s round 15x slower than this 3D V-Cache primarily based RAMDisk. PCIe 5.0 storage could also be quick, however it's nothing when in comparison with the velocity of this RAMDisk. CrystalCacheMark pic.twitter.com/MSGyrGkXv8 — Nemez (@GPUsAreMagic) February 13, 2023
It might not be sensible, however that is what V-Cache RAMDisk efficiency appears like
Okay, okay. A RAMDisk this small will not be that helpful. Nonetheless it does showcase the ability quick caches and the way they examine with DRAM or non-volatile system storage. Maybe with V-Cache clad EPYC processors a extra usable RAMDisk might be created. In spite of everything, AMD’s largest Genoa-X CPUs can characteristic over one gigabyte of L3 cache.
I don’t anticipate cache-based RAMDisks to turn into the subsequent huge factor for PC storage, just because I don't see caches changing into massive sufficient to turn into appropriate for this function. AMD’s 96MB of L3 Cache on their Ryzen 7 5800X3D and Ryzen 7 7800X3D is already thought-about revolutionary. Whereas AMD may add extra cache to future CPUs, we don't anticipate to see massive sufficient adjustments to make unusual use instances like CacheDisk storage viable. You possibly can be part of the dialogue on AMD’s V-Cache becoming an uber-fast storage medium on the OC3D Forums. Have a Ryzen 7 5800X3D. Set up OSFMount and create a FAT32 formatted ramdisk. Run CrystalDiskMark, set the take a look at values to: SEQ 256KB, Queue Depth 1, Threads 16 Set knowledge fill to 0s as a substitute of random. Run the take a look at (most likely a number of instances, that is very delicate to system load). — Nemez (@GPUsAreMagic) February 14, 2023
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