Would extra processor L3 cache increase QubesOS speed?

Hi All, Rumor has it AMD is going to be releasing a bunch of v-cache chips in the next couple years. Most people are interested in them for gaming, but I’m interested in if they would provide a performance uplift on Qubes. What are peoples thoughts?

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hi

In my opinion, the only performance problem with Qubes OS at the moment is the rendering done with the GPU, this draws a lot of CPU with poor results.

Faster CPU will provide faster qubes, but it’s not really the bottleneck nowadays.

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I agree that bringing GPU virtualization to Qubes would be a big boon for performance. But sadly, it seems that will take some time (I would like to state I’m very glad the qubes devs are working on it!). In the short run however, I could buy new hardware (and maybe I’m just looking for an excuse to buy something new TBH).

I was once told CPU single core speed was the most important thing to look for when considering hardware for running VMs. If so, I thought maybe more L3 cache would be beneficial as it speeds up games with high CPU load. But I only have a cursory understanding of how all this works, so I could be quite wrong.

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a NVME drive is a must for speed if you want to improve Qubes OS speed

The fastest CPU will provide the best performance, this is actually obvious anyway. Multiples cores help to handle a huge load, but for many single threaded task, that’s indeed the single core performance that matters.

The CPU found in laptop and small computers are usually a slower version of desktop CPU to help heat management and battery life, a desktop CPU will always bring you better performance by a good margin.

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More L3 cache isn’t going to hurt you, but if you are going to see any actual improvements depends on your workload.

The high-end AMD CPUs do have 3D v-cache to improve virtualization, but that doesn’t mean all workloads are going to be able to take advantage of more L3 cache in a way that results in significant improvements.

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