Can internlm JanusCoder 14B run on RX 6650 XT 8GB?

YES — With Q2_K

D37Poor

Estimated from fit model

internlm JanusCoder 14B needs ~8.8 GB VRAM. RX 6650 XT 8GB has 8.0 GB. With Q2_K quantization, expect ~14 tok/s.

Runtime: llama.cppCapacity: OffloadBandwidth: LowStack: StandardBottleneck: Host offload

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.

internlm JanusCoder 14B at Q4_K_M needs 11.9 GB — too much for RX 6650 XT 8GB (8.0 GB). Runs at Q2_K (8.8 GB) with low quality.

Capabilities:

Select quantization to explore

Q4_K_M (Medium quality) — 11.9 GB, exceeds 8.0 GB available

11.9 GB required8.0 GB available

149% VRAM needed

3.9 GB over capacity — needs offload or smaller quantization

Fit status

Too heavy

Decode

5.5 tok/s

TTFT

35490 ms

Safe context

Memory

11.9 GB / 8.0 GB

Offload

30%

Memory breakdown

Weights8.5 GB

KV Cache1.6 GB

Runtime0.9 GB

Headroom0.8 GB

See how fast it feels

With memory offload — actual speed may be lower

See how fast it feelsinternlm JanusCoder 14B on RX 6650 XT 8GB
1st promptCold start — includes initialization
>Write a Python function to sort a list
Here's a Python function that sorts a list using quicksort:

def quicksort(arr):
    if len(arr) <= 1:
        return arr
    pivot = arr[len(arr) // 2]
    left   = [x for x in arr if x < pivot]
    middle = [x for x in arr if x == pivot]
    right  = [x for x in arr if x > pivot]
    return quicksort(left) + middle + quicksort(right)

# Example usage
numbers = [3, 6, 8, 10, 1, 2, 1]
print(quicksort(numbers))  # [1, 1, 2, 3, 6, 8, 10]

The algorithm picks a pivot, partitions the list into smaller, equal, and larger elements, then recursively sorts each partition and concatenates the results.
2nd promptWarm — model ready, no init overhead
>Now add type hints and a docstring
def quicksort(arr: list[int]) -> list[int]:
    """Sort a list using the quicksort algorithm.

    Args:
        arr: List of integers to sort.

    Returns:
        A new sorted list.
    """
    if len(arr) <= 1:
        return arr
    pivot = arr[len(arr) // 2]
    left   = [x for x in arr if x < pivot]
    middle = [x for x in arr if x == pivot]
    right  = [x for x in arr if x > pivot]
    return quicksort(left) + middle + quicksort(right)

Added type hints for the input and return type, plus a Google-style docstring.
Estimated: 5.5 tok/s decode · 35.5s TTFT (warm) · 14 tok/s prefill

What limits this setup

It fits through host-memory offload, and offload is the main reason performance drops.

CPU or host-memory offload is active

About 10% of the working set spills out of accelerator memory, which usually hurts latency and sustained decode throughput.

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

Remove offload with more accelerator memory

Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.

Buy headroom, not only minimum fit

A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.

Increase host RAM if you keep offloading

This setup may need roughly 0.5 GB of extra host RAM just for the offloaded portion, before OS and other tools.

Performance by workload

Workload	Grade	Fit	Decode	TTFT	Context
Chat	F	Too heavy	6.3 tok/s	16652 ms	4K
Coding	F	Too heavy	5.5 tok/s	35490 ms	4K
Agentic Coding	F	Too heavy	4.2 tok/s	67778 ms	4K
Reasoning	F	Too heavy	5.5 tok/s	41943 ms	4K
RAG	F	Too heavy	4.2 tok/s	84722 ms	4K

Quantization options

How internlm JanusCoder 14B (14B params) fits at each quantization level on RX 6650 XT 8GB (8.0 GB usable).

Quant	Bits	VRAM	Quality	Fit
Q2_K	2	5.5 GB	Low	F0
Q3_K_S	3	6.9 GB	Low	F0
NVFP4	4	7.8 GB	Medium	F0
Q4_K_M	4	8.5 GB	Medium	F0
Q5_K_M	5	10.1 GB	High	F0
Q6_K	6	11.5 GB	High	F0
Q8_0	8	15.0 GB	Very High	F0
F16	16	28.7 GB	Maximum	F0

Get started

Copy-paste commands to run internlm JanusCoder 14B on your machine.

Run

lms load hf-bartowski--internlm-januscoder-14b-gguf && lms server start

Upgrade options

Hardware that runs internlm JanusCoder 14B well

RX 7600 XT 16GBBudget pick

16 GB VRAM (+8)288 GB/s (+8)

Makes the model fit on the accelerator instead of staying completely out of reach.19.6 tok/s decode

Makes the model fit on the accelerator instead of staying completely out of reach.

Removes host-memory offload, which is usually the single biggest latency and throughput win.

~$329 MSRP

RX 9060 XT 16GBBest value

16 GB VRAM (+8)320 GB/s (+40)

Makes the model fit on the accelerator instead of staying completely out of reach.23.6 tok/s decode

Makes the model fit on the accelerator instead of staying completely out of reach.

Removes host-memory offload, which is usually the single biggest latency and throughput win.

~$349 MSRP

RX 7700 XT 12GBAMD upgrade

12 GB VRAM (+4)432 GB/s (+152)

Makes the model fit on the accelerator instead of staying completely out of reach.21.7 tok/s decode

Makes the model fit on the accelerator instead of staying completely out of reach.

Removes host-memory offload, which is usually the single biggest latency and throughput win.

~$449 MSRP

Frequently asked questions

Can RX 6650 XT 8GB run internlm JanusCoder 14B?

Yes, RX 6650 XT 8GB can run internlm JanusCoder 14B at Q2_K quantization (Very compromised (needs ~0.5 GB host RAM)). The recommended Q4_K_M requires 11.9 GB which exceeds available memory, but at Q2_K it needs only 8.8 GB. Expected decode speed: 13.6 tok/s.

How much VRAM does internlm JanusCoder 14B need?

internlm JanusCoder 14B (14B parameters) requires approximately 11.9 GB at Q4_K_M quantization. On RX 6650 XT 8GB, it fits at Q2_K using 8.8 GB.

What is the best quantization for internlm JanusCoder 14B?

The recommended quantization is Q4_K_M, but on RX 6650 XT 8GB the best fitting quantization is Q2_K, which uses 8.8 GB.

What speed will internlm JanusCoder 14B run at on RX 6650 XT 8GB?

On RX 6650 XT 8GB, internlm JanusCoder 14B achieves approximately 13.6 tokens per second decode speed with a time-to-first-token of 14193ms using Q2_K quantization.

Can RX 6650 XT 8GB run internlm JanusCoder 14B for coding?

For coding workloads, internlm JanusCoder 14B on RX 6650 XT 8GB receives a F grade with 5.5 tok/s and 4K context.

What context window can internlm JanusCoder 14B use on RX 6650 XT 8GB?

On RX 6650 XT 8GB, internlm JanusCoder 14B can safely use up to 8K tokens of context at Q2_K quantization. The model's official context limit is —, but available memory constrains the safe maximum.

What should I upgrade first if internlm JanusCoder 14B feels slow on RX 6650 XT 8GB?

Remove offload with more accelerator memory. Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.

See all results for RX 6650 XT 8GB See all hardware for internlm JanusCoder 14B

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Preview:

What limits this setup

It fits through host-memory offload, and offload is the main reason performance drops.

CPU or host-memory offload is active

About 10% of the working set spills out of accelerator memory, which usually hurts latency and sustained decode throughput.

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

Remove offload with more accelerator memory

Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.

Buy headroom, not only minimum fit

A slightly larger memory tier gives you safer context growth and makes the recommendation more future-proof.

Increase host RAM if you keep offloading

This setup may need roughly 0.5 GB of extra host RAM just for the offloaded portion, before OS and other tools.

Workload

Grade

Fit

Decode

TTFT

Context

Chat

Too heavy

6.3 tok/s

16652 ms

Coding

Too heavy

5.5 tok/s

35490 ms

Agentic Coding

Too heavy

4.2 tok/s

67778 ms

Reasoning

Too heavy

5.5 tok/s

41943 ms

RAG

Too heavy

4.2 tok/s

84722 ms

Quant

Bits

VRAM

Quality

Fit

Q2_K

5.5 GB

Low

Q3_K_S

6.9 GB

Low

NVFP4

7.8 GB

Medium

Q4_K_M

8.5 GB

Medium

Q5_K_M

10.1 GB

High

Q6_K

11.5 GB

High

Q8_0

15.0 GB

Very High

F16

28.7 GB

Maximum

Frequently asked questions

Can RX 6650 XT 8GB run internlm JanusCoder 14B?

How much VRAM does internlm JanusCoder 14B need?

internlm JanusCoder 14B (14B parameters) requires approximately 11.9 GB at Q4_K_M quantization. On RX 6650 XT 8GB, it fits at Q2_K using 8.8 GB.

What is the best quantization for internlm JanusCoder 14B?

The recommended quantization is Q4_K_M, but on RX 6650 XT 8GB the best fitting quantization is Q2_K, which uses 8.8 GB.

What speed will internlm JanusCoder 14B run at on RX 6650 XT 8GB?

On RX 6650 XT 8GB, internlm JanusCoder 14B achieves approximately 13.6 tokens per second decode speed with a time-to-first-token of 14193ms using Q2_K quantization.

Can RX 6650 XT 8GB run internlm JanusCoder 14B for coding?

For coding workloads, internlm JanusCoder 14B on RX 6650 XT 8GB receives a F grade with 5.5 tok/s and 4K context.

What context window can internlm JanusCoder 14B use on RX 6650 XT 8GB?

On RX 6650 XT 8GB, internlm JanusCoder 14B can safely use up to 8K tokens of context at Q2_K quantization. The model's official context limit is —, but available memory constrains the safe maximum.

What should I upgrade first if internlm JanusCoder 14B feels slow on RX 6650 XT 8GB?

Remove offload with more accelerator memory. Prioritize a GPU or unified-memory tier that fits the whole model natively. Removing offload usually helps more than small compute gains.