The AMD Ryzen 7 5800X3D Review: 96 MB of L3 3D V-Cache Designed For Gamers
by Gavin Bonshor on June 30, 2022 8:00 AM EST- Posted in
- CPUs
- AMD
- DDR4
- AM4
- Ryzen
- V-Cache
- Ryzen 7 5800X3D
- Zen3
- 3D V-Cache
CPU Benchmark Performance: Encoding and Compression
One of the interesting elements on modern processors is encoding performance. This covers two main areas: encryption/decryption for secure data transfer, and video transcoding from one video format to another.
In the encrypt/decrypt scenario, how data is transferred and by what mechanism is pertinent to on-the-fly encryption of sensitive data - a process by which more modern devices are leaning to for software security.
Video transcoding as a tool to adjust the quality, file size and resolution of a video file has boomed in recent years, such as providing the optimum video for devices before consumption, or for game streamers who are wanting to upload the output from their video camera in real-time. As we move into live 3D video, this task will only get more strenuous, and it turns out that the performance of certain algorithms is a function of the input/output of the content.
We are using DDR4 memory at the following settings:
- DDR4-3200
Encoding
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nandnandnand - Thursday, June 30, 2022 - link
Great results for the 5800X3D in Dwarf Fortress and Factorio. Clearly it does not have enough cache for the World Gen 257x257 test.dorion - Thursday, June 30, 2022 - link
It shows the exceptional predictors in Intel's architecture, they don't have 96MB of L3 cache either(duh) and yet they whip that world generator. Wonder what odd coding of Tarn's the CPUs are butting against. And exceptional amount of civilizations and monsters to simulate for 550 years in the 257x257 world?AndreaSussman - Sunday, July 31, 2022 - link
HelloSamus - Thursday, June 30, 2022 - link
Also impressive is how much the cache improves WinRAR performance. Going from last to 2nd place - with a lower clock speednandnandnand - Thursday, June 30, 2022 - link
Compared to some of the earliest reviews like Tom's, this one found more productivity/code scenarios where the extra cache helps it edge out over the 5800X, despite the lower clock speed. Obviously there are niches where the 5800X3D will do really well, like the workloads that Milan-X can boost by >50%. You won't usually see them all in one review.DanNeely - Sunday, July 3, 2022 - link
WinRAR has always been extremely dependent on memory performance. That a huge cache benefits it isn't a big surprise.emn13 - Monday, July 11, 2022 - link
Sure, but it's more than just memory performance that's an issue here: in very abstract principle compressors need to find correlation across broad swaths of memory. It's actually not at all obvious whether that's cache-friendly; and indeed in 7-zip it appears not to be.After all, if your compression context significantly exceeds the L3 cache, then that cache will largely be useless. Conversely, if your window (almost) fits within the smaller L3-cache, then increasing its size is likely largely useless.
The fact that this helps WinRAR but not 7-zip is not obvious. Given the compression ratio differences, I'm going to assume that 7-zip is using more context, and thus can't benefit from "just" 96MB of cache. And perhaps that WinRAR at higher settings (if it has any?) wouldn't either.
That does make me curious how the 3d-vcache impacts the more high-throughput compressors such as zstd or even lz4 perhaps.
brucethemoose - Friday, July 1, 2022 - link
Just wanna say I am ecstatic over the DF/Factorio tests. Stuff like that is where I'm most critically CPU bottlenecked these days, as opposed to CPU Blender or Battlefield at 720p.I'd like to suggest Minecraft chunk generation as another test (though its a bit tricky to set up). Expansive strategy/sim games like Starsector, Rimworld, Stellaris and such would also be great to test, but I don't think they're fully automatable.
29a - Tuesday, July 5, 2022 - link
I’d also be interested in a Stellaris benchmark.ballsystemlord - Thursday, June 30, 2022 - link
@Gavin , is it just me, or do you have two sets of identical WoT Benchmarks at 1080p? BTW: I'm looking at the print view.