How much memory does GLM-4.7-Flash need at Q4?

The Q4 figure used here is 18.8 GB. GGUF file size plus an FP16 KV-cache estimate at 8,192 tokens. The cache counts only the layers and heads named in the method on the About page.

What is the cheapest catalog device that runs GLM-4.7-Flash at Q4?

Radeon RX 7900 XT, list price $899.

How fast is GLM-4.7-Flash on the GeForce RTX 4090, as a bandwidth estimate?

About 573 tok/s at Q4. That is device bandwidth divided by active weight bytes, not a measured run.

Yes. GLM-4.7-Flash fits on the GeForce RTX 4090 at Q4, with 4.0 GB of headroom. Usable memory is 22.8 GB.

Can the GeForce RTX 4090 run GLM-4.7-Flash?

Data updated 16 October 2026. Last reviewed the same day, when this catalog snapshot was written.

Usable memory on this 24 GB VRAM config is 22.8 GB (95% of the sticker figure). A result under 2 GB of headroom is labeled tight.

Quant ladder

Estimated memory for GLM-4.7-Flash on GeForce RTX 4090
Quant	Estimate	Headroom	Est. tok/s	Verdict
Q4	18.8 GB	4.0 GB	573 tok/s	Yes
Q8	32.3 GB	-9.5 GB	329 tok/s	No
FP16	74.9 GB	-52.1 GB	168 tok/s	No

GGUF file size plus an FP16 KV-cache estimate at 8,192 tokens. The cache counts only the layers and heads named in the method on the About page.
Formula estimate: parameter count × bytes per weight × 1.20. No GGUF file size is stored for this quant.
Tokens/sec is a bandwidth roofline: GB/s divided by active weight GB. It is not a measured generation speed.

KV cache at 8K and 32K

FP16 KV-cache estimate: 0.4 GB at 8,192 tokens and 1.8 GB at 32,768 tokens. MLA models use the compressed latent plus the RoPE key from config.json, not a per-head KV.

Offload

The Q4 weight estimate fits in usable VRAM, so this page does not assume a system-RAM offload.

Ollama

This command pulls the Q4_K_M file from unsloth/GLM-4.7-Flash-GGUF, the Hub repo whose file size is used above. It is not an official Ollama library tag.

ollama run hf.co/unsloth/GLM-4.7-Flash-GGUF:Q4_K_M

Other picks

Cheapest catalog device at Q4: Radeon RX 7900 XT
Closest catalog model that still fits at Q4: Qwen3.6 35B-A3B.

All hardware for GLM-4.7-Flash · All models for the GeForce RTX 4090

Questions

How much memory does GLM-4.7-Flash need at Q4?: The Q4 figure used here is 18.8 GB. GGUF file size plus an FP16 KV-cache estimate at 8,192 tokens. The cache counts only the layers and heads named in the method on the About page.
Can the GeForce RTX 4090 run GLM-4.7-Flash?: Yes. GLM-4.7-Flash fits on the GeForce RTX 4090 at Q4, with 4.0 GB of headroom. Usable memory is 22.8 GB.
What is the cheapest catalog device that runs GLM-4.7-Flash at Q4?: Radeon RX 7900 XT, list price $899.
How fast is GLM-4.7-Flash on the GeForce RTX 4090, as a bandwidth estimate?: About 573 tok/s at Q4. That is device bandwidth divided by active weight bytes, not a measured run.