Which is better for local AI in 2026 — NVIDIA GeForce RTX 5070 Ti or NVIDIA GeForce RTX 5080?

Same VRAM tier, similar workload ceilings. The choice depends on price, ecosystem, and form factor — not raw capability.

Can I run 70B Q4 models on these cards?

On the 16 GB card, 70B Q4 fits at very short context (~2K) only — workable for benchmarking, not for production agent loops.

Should I buy used or new at this tier?

Both cards are current-generation new silicon. The used-vs-new question doesn't apply directly — but consider whether a used 3090 ($700-1,000) covers your workload at much lower cost.

What about power, noise, and heat under sustained AI load?

Sustained inference draws closer to nameplate TDP than gaming benchmarks suggest. Plan PSU sizing with 200-250W headroom over GPU TDP. Improving case airflow helps the GPU more than swapping the CPU cooler.

How long will these cards stay relevant for local AI?

24 GB consumer GPUs (3090, 4090) stay inference-relevant 4-6 years. Apple Silicon stays relevant ~5 years before macOS / framework drift. Don't buy for "future-proofing" — buy for what you'll run this year. Use /will-it-run to verify your specific model + hardware combination.

How is the custom comparison different from your editorial verdicts?

The custom comparison is generated from real catalog data (VRAM, bandwidth, compute, power, runtime support). The 13+ editorial pair pages are hand-written buyer guides with decision rules, avoid-each lists, and qualitative tier scoring. Use editorial when we have one for your pair; use custom for everything else.

Why don't all comparisons have an editorial verdict?

We hand-write editorial verdicts only for the highest-search-volume pairs (RTX 4090 vs 5090, dual 3090 vs 5090, etc.). Writing a quality verdict takes hours. The custom tool covers the long tail without inventing fake editorial.

Are the prices real-time?

No. Prices in the catalog are updated periodically by editorial. Click through to a retailer for the live price.

Can I compare laptops?

Yes — the catalog includes mobile GPUs and laptop SoCs. Pick any two entries from the dropdown.

Custom comparisonEditorialReviewed May 2026

NVIDIA GeForce RTX 5070 Ti vs NVIDIA GeForce RTX 5080

Spec-driven comparison from our catalog. For curated editorial verdicts on the most-asked pairs, see the head-to-head index.

Editorial verdict available: We have a hand-written buyer guide for this exact pair. Read the editorial verdict →

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Spec matrix

Dimension	NVIDIA GeForce RTX 5070 Ti	NVIDIA GeForce RTX 5080
VRAM	16 GB mid (13B-32B Q4; 70B Q4 short ctx)	16 GB mid (13B-32B Q4; 70B Q4 short ctx)
Memory bandwidth	— —	960 GB/s strong (800 GB/s - 1.5 TB/s)
FP16 compute	—	56 TFLOPS
FP8 compute	—	112 TFLOPS
Power draw	300 W enthusiast (850W PSU)	360 W enthusiast (850W PSU)
Price	~$849 (street)	~$1,199 (street)
Release year	2025	2025
Vendor	nvidia	nvidia
Runtime support	CUDA, Vulkan	CUDA, Vulkan

Spec data from our hardware catalog. This is a generated spec compare, not a hand-written editorial verdict. For editorial picks on the most-asked pairs, see our curated head-to-heads.

Biggest buyer mistake on this comparison

Buying based on the spec sheet without verifying the actual workload requirement. Run /will-it-run with your specific model + context-length combination before committing — the math is exact and frequently surprising.

Workload fit

How each card handles common local AI workloads. “Tie” means both cards meet the bar; pick on other axes (price, ecosystem, form factor).

Workload	Winner	Notes
Coding agents (Aider, Cursor, Continue)	Tie	Code agents need 16 GB minimum for 13B-32B Q4. Below that, latency degrades from offloading.
Ollama / LM Studio chat	Tie	Both run Ollama fine. 16 GB unlocks multi-model serving via OLLAMA_KEEP_ALIVE.
Image generation (SDXL, Flux Dev)	NVIDIA GeForce RTX 5080	Image gen is compute-bound. 16 GB fits SDXL + Flux Dev FP8 with care; LoRA training tight.
Local RAG (embedding + LLM)	Tie	RAG with 13B-class LLM fits at 16 GB. 70B LLM RAG needs 24+ GB.
Long-context chat (32K+ context)	Neither fits	16 GB is tight for long context — KV cache eats VRAM linearly with context length.
Voice / Whisper transcription	Tie	Whisper Large V3 fits in 4-8 GB. Both cards likely overkill for transcription-only workloads.
Video generation (LTX-Video, Mochi)	Neither fits	Below 24 GB, local video gen isn't realistic with current models.
Multi-GPU tensor parallel (vLLM, ExLlamaV2)	Tie	Tensor-parallel scaling works on PCIe 4.0 x8/x16. Used cards typically win on $/GB-VRAM at scale (dual 3090 vs single 5090).

VRAM reality check

Multi-GPU does NOT pool VRAM by default. Two 24 GB cards = 48 GB combined ONLY when the runtime supports tensor-parallel inference (vLLM, ExLlamaV2, llama.cpp split-mode). For models that don't tensor-parallel cleanly, you're stuck at single-card VRAM.
At 16 GB, 13-32B Q4 fits comfortably. 70B Q4 fits at very short context (~2K) — usable for benchmarking but not for agent workflows. Plan for the 24 GB tier if 70B is your roadmap.

Power, noise, and thermals

NVIDIA GeForce RTX 5070 Ti TDP: 300W. NVIDIA GeForce RTX 5080 TDP: 360W. Both fit standard ATX builds with 750-850W PSUs.

Upgrade-path logic

If you already own the NVIDIA GeForce RTX 5070 Ti, the NVIDIA GeForce RTX 5080 is a side-grade — same VRAM tier means same workload ceiling. Only upgrade if you specifically need newer architecture features (FP8 native, FlashAttention 3, warranty refresh).