RunLLMLocal

Compare · GPUs

RTX 4070 Ti Super vs RTX 3090 / 3090 Ti for local LLMs

It runs 28 of 39 models fully in memory, against 21 for the RTX 4070 Ti Super, thanks to 24 GB of VRAM versus 16 GB. It is also about 25% faster on the models both can run.

VerdictThe RTX 3090 / 3090 Ti is the better card for local AI

It runs 28 of 39 models fully in memory, against 21 for the RTX 4070 Ti Super, thanks to 24 GB of VRAM versus 16 GB. It is also about 25% faster on the models both can run.

VRAM16 GB
Memory bandwidth672 GB/s
Models that fit fully21 / 39
Run with offload13
Largest that fitsgpt-oss 20B
VRAM24 GB
Memory bandwidth936 GB/s
Models that fit fully28 / 39
Run with offload8
Largest that fitsQwen3 30B-A3B (MoE)

Every model at 8K context with the best quantization that fits. Offload assumes 32 GB of system RAM. Green marks the better result. Rows where the two differ come first.

ModelRTX 4070 Ti SuperRTX 3090 / 3090 Ti
Codestral 22BOffload~4.7 tok/sQ4_K_MRuns~39 tok/sQ5_K_M
Mistral Small 3 24BOffload~4.2 tok/sQ4_K_MRuns~36 tok/sQ5_K_M
Devstral Small 24BOffload~4.3 tok/sQ4_K_MRuns~36 tok/sQ5_K_M
Gemma 4 26B-A4B (MoE)Offload~12 tok/sQ4_K_MRuns~110 tok/sQ4_K_M
Qwen3.6 27BOffload~3.6 tok/sQ4_K_MRuns~38 tok/sQ4_K_M
Qwen3 30B-A3B (MoE)Offload~13 tok/sQ4_K_MRuns~120 tok/sQ4_K_M
Qwen3-Coder 30B-A3BOffload~13 tok/sQ4_K_MRuns~120 tok/sQ4_K_M
Llama 3.3 70BWon’t fitOffload~1.9 tok/sQ3_K_M
DeepSeek-R1 Distill 70BWon’t fitOffload~1.9 tok/sQ3_K_M
Qwen3 0.6BRuns~690 tok/sQ8_0Runs~960 tok/sQ8_0
Gemma 3 1BRuns~410 tok/sQ8_0Runs~570 tok/sQ8_0
Llama 3.2 1BRuns~340 tok/sQ8_0Runs~480 tok/sQ8_0
Llama 3.2 3BRuns~130 tok/sQ8_0Runs~180 tok/sQ8_0
Phi-4 Mini 3.8BRuns~110 tok/sQ8_0Runs~150 tok/sQ8_0
Qwen3 4BRuns~100 tok/sQ8_0Runs~140 tok/sQ8_0
Gemma 3 4BRuns~96 tok/sQ8_0Runs~130 tok/sQ8_0
Qwen3.5 4BRuns~88 tok/sQ8_0Runs~120 tok/sQ8_0
Mistral 7B v0.3Runs~57 tok/sQ8_0Runs~80 tok/sQ8_0
Qwen2.5-Coder 7BRuns~54 tok/sQ8_0Runs~76 tok/sQ8_0
Llama 3.1 8BRuns~52 tok/sQ8_0Runs~72 tok/sQ8_0
DeepSeek-R1 Distill 8BRuns~52 tok/sQ8_0Runs~72 tok/sQ8_0
Qwen3 8BRuns~50 tok/sQ8_0Runs~70 tok/sQ8_0
Qwen3.5 9BRuns~44 tok/sQ8_0Runs~61 tok/sQ8_0
Gemma 4 12BRuns~44 tok/sQ6_KRuns~48 tok/sQ8_0
Gemma 3 12BRuns~44 tok/sQ6_KRuns~47 tok/sQ8_0
Mistral Nemo 12BRuns~44 tok/sQ6_KRuns~47 tok/sQ8_0
Phi-4 14BRuns~42 tok/sQ5_K_MRuns~39 tok/sQ8_0
Qwen3 14BRuns~42 tok/sQ5_K_MRuns~39 tok/sQ8_0
DeepSeek-R1 Distill 14BRuns~42 tok/sQ5_K_MRuns~39 tok/sQ8_0
gpt-oss 20BRuns~90 tok/sQ4_K_MRuns~90 tok/sQ6_K
Gemma 3 27BOffload~3.4 tok/sQ4_K_MOffload~5.5 tok/sQ4_K_M
Gemma 4 31BOffload~2.9 tok/sQ4_K_MOffload~4.6 tok/sQ4_K_M
Qwen3 32BOffload~2.8 tok/sQ4_K_MOffload~4.5 tok/sQ4_K_M
DeepSeek-R1 Distill 32BOffload~2.8 tok/sQ4_K_MOffload~4.5 tok/sQ4_K_M
Qwen2.5-Coder 32BOffload~2.8 tok/sQ4_K_MOffload~4.5 tok/sQ4_K_M
Qwen3.6 35B-A3B (MoE)Offload~14 tok/sQ4_K_MOffload~19 tok/sQ4_K_M
Llama 4 Scout 109B-A17BWon’t fitWon’t fit
gpt-oss 120BWon’t fitWon’t fit
Qwen3 235B-A22B (MoE)Won’t fitWon’t fit

Which should you buy?

The RTX 3090 / 3090 Ti is the better card for local AI. It runs 28 of 39 models fully in memory, against 21 for the RTX 4070 Ti Super, thanks to 24 GB of VRAM versus 16 GB. It is also about 25% faster on the models both can run.

Only the RTX 3090 / 3090 Ti fits Codestral 22B, Mistral Small 3 24B, Devstral Small 24B, Gemma 4 26B-A4B (MoE), Qwen3.6 27B, Qwen3 30B-A3B (MoE) and Qwen3-Coder 30B-A3B fully in memory.

See every result on its own page: RTX 4070 Ti Super and RTX 3090 / 3090 Ti.

Questions

Is the RTX 4070 Ti Super or the RTX 3090 / 3090 Ti better for running LLMs?

The RTX 3090 / 3090 Ti is the better card for local AI. It runs 28 of 39 models fully in memory, against 21 for the RTX 4070 Ti Super, thanks to 24 GB of VRAM versus 16 GB. It is also about 25% faster on the models both can run.

Which models can the RTX 3090 / 3090 Ti run that the RTX 4070 Ti Super can't?

At 8K context, only the RTX 3090 / 3090 Ti holds Codestral 22B, Mistral Small 3 24B, Devstral Small 24B, Gemma 4 26B-A4B (MoE), Qwen3.6 27B and Qwen3 30B-A3B (MoE) and 1 more fully in VRAM.

Does the RTX 4070 Ti Super or RTX 3090 / 3090 Ti need anything else to run local AI?

Only the software. Install Ollama or LM Studio, pick a model that fits in VRAM, and it runs on the GPU. 32 GB of system RAM helps when a model spills over, but that path is much slower.

More comparisons

Estimates from memory size and bandwidth at 8K context. Real speed varies with software, drivers and settings.

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