seen how smoothly a coworkers pc handles autocad and revit, and decided to upgrade, I’m thinking about 7900 or 9700x. They are about the same price here in europe, and I wonder, does autodesk apps even use avx512 and I should go with 9700x, or should I go with older 7900 with more cores. I’m not looking at higher tdp cpus because I dont want to scrap my noctua DH-15 or whatever it’s called and by some huge water cooler for another 100eur and have a heater right next to me. So does anyone know if autodek uses avx512, because I cant find anything on autodesk site. Or maybe I should go for 9900x, would DH15 be enough? And whats with core parking on 9900x does it affect only games, or will apps also lag when used in real time without it? Lag in autocad is very frustrating, when you need to hurry with the drawings.
When I work I usually have a lot of programs at the same time that i switch in between and make changes rapidly like dialux, word excel, sometimes revit, and 2d autocad. I just mention autocad because that one is the biggest pain in the ass. But excel sheets are huge, and even word start to lag so I want everything to be as snappy as possible, without going to to high TDP cpus.
I will go with 7900, with at least 64GB ram.
Zen 4 vs Zen 5, you will never notice the difference. As 7900 comes with 4 more cores, it speeds up zip/unzip.
I know you don’t like to hear it but Intel makes more sense because it’s cheaper and faster. Just make sure to apply the bios update for the voltage issue.
Autodesk applications don’t really use all that much memory bandwidth and are very serialized. so they prefer low latency high single thread performance.
Given how weird Igor’s Cadalyst results are I’d be hesitant to hang a CPU choice on them even if use centered on the evaluated workflows. Some CAD benches favor Raptor, some Zen 5, broader pools benches currently favor Zen 5 and will presumably swing to Arrow Lake when it’s available. In the meantime, by its own admission Intel hasn’t fully resolved Raptor’s degradation issues and I’ve found it’s not hard for Intel7’s cooling and power costs to exceed Zen 5 early adopter premiums.
Should be, unless low noise is a priority. Phantom Spirit 120’ll probably be 2-4 degrees cooler, noise normalized.