Can Yi 1.5 34B run on NVIDIA H100 80GB?

YES — Runs Great

B63Good

Estimated from fit model

Yi 1.5 34B needs ~33.6 GB VRAM. NVIDIA H100 80GB has 80.0 GB. With Q4_K_M quantization, expect ~147 tok/s.

Runtime: OllamaCapacity: RoomyBandwidth: HighStack: 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.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 33.6 GB, 147.3 tok/s, Runs well

33.6 GB required80.0 GB available

42% VRAM used

Fit status

Runs well

Decode

147.3 tok/s

TTFT

1314 ms

Safe context

Memory

33.6 GB / 80.0 GB

Memory breakdown

Weights20.7 GB

KV Cache3.7 GB

Runtime1.2 GB

Headroom8.0 GB

See how fast it feels

See how fast it feelsYi 1.5 34B on NVIDIA H100 80GB
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: 147.3 tok/s decode · 1.3s TTFT (warm) · 368 tok/s prefill

What limits this setup

This setup is broadly balanced for this model.

No major red flags

This recommendation has enough memory headroom and acceptable estimated speed for the selected workload.

Best improvement path

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	B	Runs well	147.3 tok/s	717 ms	4K
Coding	B	Runs well	147.3 tok/s	1314 ms	4K
Agentic Coding	B	Runs well	147.3 tok/s	1912 ms	4K
Reasoning	B	Runs well	147.3 tok/s	1553 ms	4K
RAG	B	Runs well	147.3 tok/s	2390 ms	4K

Quantization options

How Yi 1.5 34B (34B params) fits at each quantization level on NVIDIA H100 80GB (80.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	13.3 GB	Low	C53
Q3_K_S	3	16.7 GB	Low	C54
NVFP4	4	19.0 GB	Medium	C54
Q4_K_M	4	20.7 GB	Medium	C55
Q5_K_M	5	24.5 GB	High	B55
Q6_K	6	27.9 GB	High	B56
Q8_0Best for your GPU	8	36.4 GB	Very High	B58
F16	16	69.7 GB	Maximum	F0

Get started

Copy-paste commands to run Yi 1.5 34B on your machine.

Run

lms load Yi-1.5-34B-Chat && lms server start

Frequently asked questions

Can NVIDIA H100 80GB run Yi 1.5 34B?

Yes, NVIDIA H100 80GB can run Yi 1.5 34B with a B grade (Runs well). Expected decode speed: 147.3 tok/s.

How much VRAM does Yi 1.5 34B need?

Yi 1.5 34B (34B parameters) requires approximately 33.6 GB of memory with Q4_K_M quantization.

What is the best quantization for Yi 1.5 34B?

The recommended quantization for Yi 1.5 34B is Q4_K_M, which balances quality and memory efficiency.

What speed will Yi 1.5 34B run at on NVIDIA H100 80GB?

On NVIDIA H100 80GB, Yi 1.5 34B achieves approximately 147.3 tokens per second decode speed with a time-to-first-token of 1314ms using Q4_K_M quantization.

Can NVIDIA H100 80GB run Yi 1.5 34B for coding?

For coding workloads, Yi 1.5 34B on NVIDIA H100 80GB receives a B grade with 147.3 tok/s and 4K context.

What context window can Yi 1.5 34B use on NVIDIA H100 80GB?

On NVIDIA H100 80GB, Yi 1.5 34B can safely use up to 4K tokens of context. The model's official context limit is 4K, but available memory constrains the safe maximum.

See all results for NVIDIA H100 80GB See all hardware for Yi 1.5 34B

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Preview:

Workload

Grade

Fit

Decode

TTFT

Context

Chat

Runs well

147.3 tok/s

717 ms

Coding

Runs well

147.3 tok/s

1314 ms

Agentic Coding

Runs well

147.3 tok/s

1912 ms

Reasoning

Runs well

147.3 tok/s

1553 ms

RAG

Runs well

147.3 tok/s

2390 ms

Quantization options

How Yi 1.5 34B (34B params) fits at each quantization level on NVIDIA H100 80GB (80.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	13.3 GB	Low	C53
Q3_K_S	3	16.7 GB	Low	C54
NVFP4	4	19.0 GB	Medium	C54
Q4_K_M	4	20.7 GB	Medium	C55
Q5_K_M	5	24.5 GB	High	B55
Q6_K	6	27.9 GB	High	B56
Q8_0Best for your GPU	8	36.4 GB	Very High	B58
F16	16	69.7 GB	Maximum	F0

Frequently asked questions

Can NVIDIA H100 80GB run Yi 1.5 34B?

Yes, NVIDIA H100 80GB can run Yi 1.5 34B with a B grade (Runs well). Expected decode speed: 147.3 tok/s.

How much VRAM does Yi 1.5 34B need?

Yi 1.5 34B (34B parameters) requires approximately 33.6 GB of memory with Q4_K_M quantization.

What is the best quantization for Yi 1.5 34B?

The recommended quantization for Yi 1.5 34B is Q4_K_M, which balances quality and memory efficiency.

What speed will Yi 1.5 34B run at on NVIDIA H100 80GB?

On NVIDIA H100 80GB, Yi 1.5 34B achieves approximately 147.3 tokens per second decode speed with a time-to-first-token of 1314ms using Q4_K_M quantization.

Can NVIDIA H100 80GB run Yi 1.5 34B for coding?

For coding workloads, Yi 1.5 34B on NVIDIA H100 80GB receives a B grade with 147.3 tok/s and 4K context.

What context window can Yi 1.5 34B use on NVIDIA H100 80GB?

On NVIDIA H100 80GB, Yi 1.5 34B can safely use up to 4K tokens of context. The model's official context limit is 4K, but available memory constrains the safe maximum.