Ticket #20548 (new defect)

Opened 6 weeks ago

Last modified 7 days ago

AMD vs Intel CPU big performance difference

Reported by: Petr Vones Owned by:
Component: other Version: VirtualBox 6.1.26
Keywords: Cc:
Guest type: Windows Host type: Windows


I use single VM on both Intel and AMD hardware. When I moved it from Intel to AMD I noticed the performance is much better. Next I tried to switch to Hyper-V on both machines, converted the VDI file and use it.

On Intel Core i5 2540M and Intel Core i5-8265U the performance difference was about 50 percent while on AMD Ryzen 5 3600 both VirtualBox and Hyper-V performs almost identical (5 percent difference is as expected). The AMD PC machine has super fast Samsung 980 Pro SSD while the Intel laptop just an ordinary WD SSD. Still the difference is huge.

The guest OS I use for software development. It is Windows 10, Visual Studio, MS SQL Server and so on. I run unit tests of a complex project and recorded how long it takes, see the tests.png attachment.

There is a long thread about it with more detailed information.


tests.png Download (92.8 KB) - added by Petr Vones 6 weeks ago. Download (60.2 KB) - added by Petr Vones 6 weeks ago.

Change History

Changed 6 weeks ago by Petr Vones

Changed 6 weeks ago by Petr Vones

comment:1 Changed 7 days ago by vbicf

I cannot run my old VM on AMD when I switch Hyper-V in Windows. I get a blue screen! But on Intel it works fine. Do you have to do something on AMD to work? What do you mean you converted your VDI? See my issue here:

Last edited 7 days ago by vbicf (previous) (diff)
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