Can LTX Video 2B run on Mac Studio M2 Ultra 128GB?
YES — Runs Great
S90Excellent
LTX Video 2B needs ~12.0 GB VRAM. Mac Studio M2 Ultra 128GB has 92.2 GB.
| Precision | VRAM Needed | Status | Grade |
|---|---|---|---|
| FP16Best | 12.0 GB | Runs natively | S |
| FP8 | 14.1 GB | Runs natively | S |
12.0 GB required92.2 GB available
13% VRAM used
Parameters
2B
Precision
FP16
Max Resolution
1280×720
VRAM
12.0 GB / 92.2 GB
Gen Time
~37.3s/frame
Performance by workload
| Workload | Grade | Fit | VRAM | Per Frame |
|---|---|---|---|---|
| Short Clip | S | Runs natively | 12.0 GB | ~37.3s |
| Long Video | S | Runs natively | 32.5 GB | ~50.5s |
Video scenario compatibility
How LTX Video 2B (2B params) performs at each scenario on Mac Studio M2 Ultra 128GB (92.2 GB usable).
FP16 (full precision)
| Scenario | VRAM | Mac Studio M2 Ultra 128GB |
|---|---|---|
| 512×512 · 25 frames | 13.9 GB | S● |
| 768×512 · 25 frames | 12.0 GB | S● |
| 768×512 · 100 frames | 12.0 GB | S● |
| 1280×720 · 25 frames | 21.7 GB | S● |
FP8 (quantized — ~40% less VRAM)
| Scenario | VRAM | Mac Studio M2 Ultra 128GB |
|---|---|---|
| 512×512 · 25 frames | 12.0 GB | S |
| 768×512 · 25 frames | 14.1 GB | S |
| 768×512 · 100 frames | 20.4 GB | S |
| 1280×720 · 25 frames | 22.5 GB | S |
Memory breakdown
Required: 12.0 GBAvailable: 92.2 GB
Weights4.0 GB
VAE0.2 GB
Text Encoder9.4 GB
Activations6.0 GB
Overhead0.5 GB
Frequently asked questions
Can Mac Studio M2 Ultra 128GB run LTX Video 2B?
Yes, Mac Studio M2 Ultra 128GB can run LTX Video 2B for video generation. Runs natively.
How much VRAM does LTX Video 2B need?
LTX Video 2B (2B parameters) requires approximately 12.0 GB at FP16. Mac Studio M2 Ultra 128GB provides 92.2 GB.
What resolution and duration can LTX Video 2B produce on Mac Studio M2 Ultra 128GB?
On Mac Studio M2 Ultra 128GB, LTX Video 2B can generate video at up to 1280x720. Generation time is approximately 37.3 seconds per frame.
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