RTX 4000 Ada 20GBOpción económica20 GB VRAM (+4)
A
Añade margen de memoria para más contexto y para que el modelo envejezca mejor.65.8 tok/s decodificación
Añade margen de memoria para más contexto y para que el modelo envejezca mejor.
~$1,250 MSRP
Can MPT-7B-Instruct run on RTX A4000 16GB?
YES — Tight Fit
B69Good
Estimated from fit model
MPT-7B-Instruct needs ~14.9 GB VRAM. RTX A4000 16GB has 16.0 GB. With Q4_K_M quantization, expect ~73 tok/s.
Runtime: OllamaCapacity: TightBandwidth: LowStack: BasicBottleneck: Balanced
Operating mode
Choose the run profile you care about
Interactive favors responsiveness, while light API and scale-out lean harder on serving readiness. The fit stays the same, but the recommendation lens changes.
Current mode
Balanced
Balanced for general local use. Keeps the ranking neutral across personal and serving workflows.
Select quantization to explore
Q4_K_M (Medium quality) — 14.9 GB, 73.4 tok/s, Tight fit
14.9 GB required16.0 GB available
93% VRAM used
Fit status
Tight fit
Decode
73.4 tok/s
TTFT
2636 ms
Safe context
8K
Memory
14.9 GB / 16.0 GB
Memory breakdown
Weights4.3 GB
KV Cache7.8 GB
Runtime1.2 GB
Headroom1.6 GB
See how fast it feels
See how fast it feelsMPT-7B-Instruct on RTX A4000 16GB
1st promptCold start — includes initialization
>Solve: If a train travels at 60 mph for 2.5 hours, how far does it go?
Let me work through this step by step.
Given information:
- Speed = 60 mph (miles per hour)
- Time = 2.5 hours
Formula: Distance = Speed x Time
Calculation:
Distance = 60 mph x 2.5 h
= 150 miles
The train travels 150 miles.
Double-check: at 60 mph the train covers 60 miles each hour. In half an hour it covers 30 miles. So in 2.5 hours: 60 + 60 + 30 = 150 miles. Confirmed.
2nd promptWarm — model ready, no init overhead
>What if the train stops for 20 minutes halfway?
The stop doesn't change the total distance covered while moving, but it affects total trip time.
Breakdown:
- First half: 1.25 hours at 60 mph = 75 miles
- Stop: 20 minutes (no distance)
- Second half: 1.25 hours at 60 mph = 75 miles
Total distance: 150 miles (same)
Total time: 2.5 h + 0.33 h = 2.83 hours
Average speed: 150 / 2.83 = 53 mph
The distance stays the same but average speed drops to 53 mph because of the stop.
Estimated: 73.4 tok/s decode · 2.6s TTFT (warm) · 184 tok/s prefill
What limits this setup
This setup is broadly balanced for this model.
Very little memory headroom
You can run the model, but there is not much room left for longer context, bigger batches, extra apps, or future model updates.
Best improvement path
Buy headroom, not only minimum fit
A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.
Performance by workload
| Workload | Grade | Fit | Decode | TTFT | Context |
|---|---|---|---|---|---|
| Chat | A | Runs well | 73.4 tok/s | 1438 ms | 8K |
| Coding | B | Tight fit | 73.4 tok/s | 2636 ms | 8K |
| Agentic Coding | F | Too heavy | 26.4 tok/s | 10670 ms | 8K |
| Reasoning | B | Tight fit | 73.4 tok/s | 3115 ms | 8K |
| RAG | F | Too heavy | 26.4 tok/s | 13338 ms | 8K |
Quantization options
How MPT-7B-Instruct (7B params) fits at each quantization level on RTX A4000 16GB (16.0 GB usable).
| Quant | Bits | VRAM | Quality | Fit |
|---|---|---|---|---|
Q2_K | 2 | 2.7 GB | Low | B63 |
Q3_K_S | 3 | 3.4 GB | Low | B63 |
NVFP4 | 4 | 3.9 GB | Medium | B64 |
Q4_K_M | 4 | 4.3 GB | Medium | B64 |
Q5_K_M | 5 | 5.0 GB | High | B65 |
Q6_K | 6 | 5.7 GB | High | B66 |
Q8_0Best for your GPU | 8 | 7.5 GB | Very High | B67 |
F16 | 16 | 14.3 GB | Maximum | F0 |
Get started
Copy-paste commands to run MPT-7B-Instruct on your machine.
Run
lms load mpt-7b-instruct && lms server startOpciones de mejora
Hardware que ejecuta bien MPT-7B-Instruct
RTX 4000 Ada 20GBOpción económicaRTX 3090 24GBMejor relación calidad-precio24 GB VRAM (+8)936 GB/s (+488)
A
Sube la velocidad estimada de decodificación alrededor de un 34%.98 tok/s decodificación
Sube la velocidad estimada de decodificación alrededor de un 34%.
Añade margen de memoria para más contexto y para que el modelo envejezca mejor.
~$1,499 MSRP
RTX 4090 24GBMejora NVIDIA24 GB VRAM (+8)1008 GB/s (+560)
A
Sube la velocidad estimada de decodificación alrededor de un 34%.98 tok/s decodificación
Sube la velocidad estimada de decodificación alrededor de un 34%.
Añade margen de memoria para más contexto y para que el modelo envejezca mejor.
~$1,599 MSRP
Frequently asked questions
Can RTX A4000 16GB run MPT-7B-Instruct?
Yes, RTX A4000 16GB can run MPT-7B-Instruct with a B grade (Tight fit). Expected decode speed: 73.4 tok/s.
How much VRAM does MPT-7B-Instruct need?
MPT-7B-Instruct (7B parameters) requires approximately 14.9 GB of memory with Q4_K_M quantization.
What is the best quantization for MPT-7B-Instruct?
The recommended quantization for MPT-7B-Instruct is Q4_K_M, which balances quality and memory efficiency.
What speed will MPT-7B-Instruct run at on RTX A4000 16GB?
On RTX A4000 16GB, MPT-7B-Instruct achieves approximately 73.4 tokens per second decode speed with a time-to-first-token of 2636ms using Q4_K_M quantization.
Can RTX A4000 16GB run MPT-7B-Instruct for coding?
For coding workloads, MPT-7B-Instruct on RTX A4000 16GB receives a B grade with 73.4 tok/s and 8K context.
What context window can MPT-7B-Instruct use on RTX A4000 16GB?
On RTX A4000 16GB, MPT-7B-Instruct can safely use up to 8K tokens of context. The model's official context limit is 8K, but available memory constrains the safe maximum.
What should I upgrade first if MPT-7B-Instruct feels slow on RTX A4000 16GB?
Buy headroom, not only minimum fit. A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.
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