Rank: Newbie
Groups: Registered
Joined: 7/10/2025(UTC) Posts: 2  Location: Toronto Thanks: 1 times
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Hello all,
Long time vMix user - first time poster =)
Ive purchased a P8 Lenovo desktop thats running an NVIDIA RTX 5000 Ada video card - i was hoping this GPU was enough horsepower to run my mixes as i run a lot of overlays, PiP, video playback and NDI inputs.
Running it for the fist time this week and im looking at +50% on the GPU Mem.. any thoughts as to why this consumption is so great?
Appreciate any input y'all have to share!
vMix report
EX FPS: 30
Render Time: ~10ms (avg)
GPU Mem: 50%-57% (avg)
CPU Mem: 1%
CPU vMix: 1%
Total: 2%
Computer spec
Lenovo P8
AMD Ryzen Threadripper PRO
128GB RAM
2TB Storage
NVIDIA RTX 5000 Ada
Task Manger Process
vmix
1.5% CPU
800MB Memory
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Rank: Advanced Member
Groups: Registered
Joined: 7/1/2020(UTC) Posts: 94  Location: Earth Was thanked: 20 time(s) in 18 post(s)
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are you using resizable bar? if so ignore this number and carry on. also check in vmix performance settings to make sure you are using the nvidia, and not the onboard gpu.
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 1 user thanked AudioGreg for this useful post.
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Rank: Newbie
Groups: Registered
Joined: 7/10/2025(UTC) Posts: 2 Location: Toronto Thanks: 1 times
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Thanks AudioGreg =)
the system was set to the nvidia card - but i selected High Input Performace mode and it dropped the GPU Mem to ~14%
Ill give it the gears later this afternoon to see how it behaves.
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Rank: Advanced Member
Groups: Registered
Joined: 9/10/2015(UTC) Posts: 134 Thanks: 2 times
Was thanked: 35 time(s) in 32 post(s)
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With ResizableBAR you actually don't want high input performance mode.
That option uses an extra layer of memory swaps on GPU memory to increase throughout but at the cost of added latency. Prior to ReBAR your CPU could only write to 128MB of memory at a time. The GPU memory usage percentage you see on the status bar _always_ assumes you only have 128MB, even if you have a larger BAR (the amount of memory you can write to).
Say you resized your BAR to 1GB. In that case you'd want to take advantage of all that available memory so you'd expect yout GPU memory usage to be above 100%.
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Rank: Advanced Member
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Joined: 12/24/2021(UTC) Posts: 699  Location: athens Thanks: 159 times
Was thanked: 89 time(s) in 85 post(s)
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Vmix 28 show correctly when rebar is enabled. So you will see 100% when really gpu memory is full by 100%
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Rank: Advanced Member
Groups: Registered
Joined: 3/7/2012(UTC) Posts: 2,662  Location: Canada Thanks: 33 times
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