Can LTX Video 2B run on Mac Studio M3 Ultra 256GB?
YES — Runs Great
S90Excellent
LTX Video 2B needs ~12.0 GB VRAM. Mac Studio M3 Ultra 256GB has 184.3 GB.
| Precision | VRAM Needed | Status | Grade |
|---|---|---|---|
| FP16Best | 12.0 GB | Runs natively | S |
| FP8 | 14.1 GB | Runs natively | S |
12.0 GB required184.3 GB available
7% VRAM used
Parameters
2B
Precision
FP16
Max Resolution
1280×720
VRAM
12.0 GB / 184.3 GB
Gen Time
~31.8s/frame
Performance by workload
| Workload | Grade | Fit | VRAM | Per Frame |
|---|---|---|---|---|
| Short Clip | S | Runs natively | 12.0 GB | ~31.8s |
| Long Video | S | Runs natively | 32.5 GB | ~43s |
Video scenario compatibility
How LTX Video 2B (2B params) performs at each scenario on Mac Studio M3 Ultra 256GB (184.3 GB usable).
FP16 (full precision)
| Scenario | VRAM | Mac Studio M3 Ultra 256GB |
|---|---|---|
| 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 M3 Ultra 256GB |
|---|---|---|
| 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: 184.3 GB
Weights4.0 GB
VAE0.2 GB
Text Encoder9.4 GB
Activations6.0 GB
Overhead0.5 GB
Frequently asked questions
Can Mac Studio M3 Ultra 256GB run LTX Video 2B?
Yes, Mac Studio M3 Ultra 256GB 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 M3 Ultra 256GB provides 184.3 GB.
What resolution and duration can LTX Video 2B produce on Mac Studio M3 Ultra 256GB?
On Mac Studio M3 Ultra 256GB, LTX Video 2B can generate video at up to 1280x720. Generation time is approximately 31.8 seconds per frame.
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