Disconsented
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
Mobs & other entities are what typically eat your TPS, thats what you need to simulate
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
Correct, CPU pipelines are incredibly complex and minecraft doesn't exactly do 1 thing.
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
The nice part about the Vcache parts, is that they're just running at sensible power targets
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
It also appears to reduce the load on the Infinity Fabric
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
Vcache is great at hiding poor RAM performance
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
Fundementally, its https://en.wikipedia.org/wiki/Amdahl%27s_law
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
The point of extra cores for MC, is to have something else process tasks besides the main loop thus giving the main loop more time on the core without being interupted.
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
Hence, single core performance, because thats the abstraction thats relevant here
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
Its everything from the process its built on, to the libraries it uses, to the PPA trade offs for the design. To the compiler support, how well it does branch prediction, handling op caching, how ops are broken down... to levels of caching in their size, throughput and latency as well as the complicated trade offs of those in relation to eachother and their hireachy
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
Its really damn complicated, there isn't a single component or aspect of it
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
The part I replied to wasn't asking about components directly either
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
Its not a component is the problem
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
The yardstick paper even validates this academically.
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
Its single core performance, how fast you can process the main loop.
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
Hetzner is using them because they're at much lower power draw stock lol
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
But I've got down the rabbit hole of finding claims around V-cache being useful for games, but also hosting server like Factorio and possible MC. That said I'm yet to find any sort of benchmark or results.https://images.anandtech.com/graphs/graph18795/132231.png As for MC, I have seen no evidence to suggest it'd benefit despite my own speculation. I'd presume it doesn't.
But as I'm already locking dockers and VMs to cores. I don't think the V-Cache only being present on the first CCD would cause an issue. In fact I would be able to test the server on both CCDs and draw my conclusions. And spread other applications accordingly too.I does cause issues, but you can also manually wrangle applications to a single CCD and then its a non factor.
I would be getting a 7900X3D. Unless someone is telling me differently. I've thought about getting the 7800X3D but this would of course remove to option to choose between CCDs. And I'm also don't see how I can get away with 8 less threads compared to what I have now.I don't really recommend the 7900X3D, its in an akward space. Generally speaking, for a gaming focued machine you want a 7800X3D. Because its either the fastest, or almost the fastest CPU and its incredibly efficient. Drawing up to a third of the power that Intel will under load. 7950X3D for hybird work/games with the 7800X3D for primarily games. https://tpucdn.com/review/intel-core-i9-14900k/images/relative-performance-games-1280-720.png There's extra value here, the games that do actually scale with Vcache scale really damn well. These tend to be sim games like factorio, MSFS or some MMOs like WOW and co. These generally aren't captured in benchmarks, so if they're relevant to you, its worth considering.
117 replies
AAdmincraft
•Created by Flexz on 11/15/2023 in #questions
AMD V-Cache
I'll read this tomorrow
117 replies