RTX 5070 vs RTX 5080 mobile in 2026: comparison and which to pick

If you're in high-end laptops ($2,000-3,500 USD), the key dilemma is RTX 5070 vs RTX 5080 mobile. Price difference between laptops carrying them is typically $500-800 USD. Worth the jump? Crucially depends on your resolution, AI workloads, and whether your use justifies the extra VRAM. This comparison gives you the verdict.

Compared specs

| Metric | RTX 5070 mobile | RTX 5080 mobile | |---|---|---| | VRAM | 12 GB GDDR7 | 16 GB GDDR7 | | Memory bus | 192 bit | 256 bit | | Memory bandwidth | 432 GB/s | 768 GB/s | | CUDA cores | 5,888 | 7,680 | | Typical TGP | 90-150 W | 100-175 W | | Architecture | Blackwell | Blackwell | | DLSS 4 | yes | yes |

The 5080 has 33% more VRAM and almost double bandwidth. Bigger gap than between 4070 and 4080 in the previous generation.

1440p gaming performance

Independent 2026 tests (typical TGP 130 W both):

• Cyberpunk 2077 1440p ultra (no RT): 5070 65 fps, 5080 90 fps. 5080 edge ~38%.
• Cyberpunk 2077 1440p ultra + RT + DLSS 4: 5070 70 fps, 5080 105 fps.
• Counter-Strike 2 1440p competitive: 5070 300+ fps, 5080 350+ fps. Both CPU bound.
• Hogwarts Legacy 1440p ultra: 5070 75 fps, 5080 105 fps.
• Black Myth Wukong 1440p high: 5070 50 fps, 5080 75 fps.

1440p verdict: 5080 delivers ~35-40% more fps in modern games. Clear difference.

4K gaming performance

• Cyberpunk 2077 4K high (no RT): 5070 35 fps (unplayable without DLSS), 5080 52 fps.
• Cyberpunk 4K + DLSS 4 Quality: 5070 60 fps, 5080 88 fps.
• Forza Horizon 5 4K ultra: 5070 60 fps, 5080 88 fps.

Only the 5080 offers comfortable 4K. The 5070 requires DLSS for decent 4K.

1080p competitive gaming

Both far exceed any 1080p need. If your use is 1080p competitive only, neither justifies — better RTX 4060 or 5060.

Local AI

This is where the difference is brutal:

Local LLMs

• Llama 3.1 8B Q4 (5 GB VRAM): both at top, 5080 ~25% faster in throughput.
• Llama 13B Q4 (8 GB): both comfortable, 5080 faster.
• Qwen 14B Q5 (10 GB): 5070 tight, 5080 comfortable.
• DeepSeek R1 14B Q6 (12 GB): 5070 at limit, 5080 comfortable with margin.
• Llama 30B Q4 (18 GB): 5070 unviable without offload, 5080 with moderate offload (5-8 tokens/s).

Detail in which RTX for LLMs.

Stable Diffusion

• SD 1.5 1024x1024: 5070 8 seconds, 5080 6 seconds.
• SDXL 1024x1024: 5070 15 seconds, 5080 11 seconds.
• FLUX schnell: 5070 18 seconds, 5080 13 seconds.
• Workflows with multiple LoRAs and ControlNet: 5070 can run out of VRAM, 5080 supports it.

Video editing

• Premiere 4K timeline scrubbing: both smooth.
• H.265 4K 10 min render: 5070 4:30, 5080 3:20.
• DaVinci Neural Engine effects: 5080 25% faster.
• 8K timeline scrubbing: 5070 with occasional jumps, 5080 smooth.

TGP and battery

• RTX 5070 with 130 W TGP: laptop with 90 Wh battery lasts 4-6 hours mixed.
• RTX 5080 with 150 W TGP: lasts 3-5 hours mixed.

Battery difference isn't decisive in high-end — they're desktop-class laptops that move occasionally.

2026 laptop prices

Laptop with each GPU (16 GB RAM, 1 TB SSD, decent display):

• ASUS ROG Strix with RTX 5070: $1,800-2,300 USD.
• ASUS ROG Strix with RTX 5080: $2,500-3,200 USD.
• Lenovo Legion Pro 7i with RTX 5070: $1,900-2,400 USD.
• Lenovo Legion Pro 7i with RTX 5080: $2,700-3,500 USD.

Typical premium: $700-900 USD to upgrade from 5070 to 5080 at equivalent config.

Best option by your use

Competitive 1440p gaming with 165 Hz+ monitor

RTX 5080. Guarantees sustained 144+ fps in modern AAA.

Casual 1440p gaming

RTX 5070 saves money. ~75 fps on AAA is perfectly playable.

4K laptop gaming

RTX 5080 mandatory. The 5070 doesn't reach comfortable 4K on AAA.

LLMs up to 13B

Both work. 5070 covers comfortably. 5080 premium not justified by LLMs alone.

Local LLMs 14B-30B

RTX 5080 for VRAM. 5070 locks you out of 30B and tight on 14B Q6.

Stable Diffusion XL with LoRAs and ControlNet

RTX 5080. Complex workflows consume >12 GB.

Professional 4K video editing

Tied, 5070 plenty. Both excessive for consumer 4K.

8K video editing or heavy multicam

RTX 5080.

Heavy Blender 3D render

RTX 5080 for superior throughput, especially OptiX on complex scenes.

Worth the $700-900 USD premium?

Yes if:

• You'll use 4K gaming or external 4K monitor.
• You do local AI with 14B+ models or complex Stable Diffusion.
• 8K video editing, heavy 3D render or local ML training.
• You want a laptop that lasts 5+ years on max AAA gaming.

No if:

• Your gaming is 1080p competitive or 1440p casual.
• Your local AI is only 8B LLMs and SD 1.5.
• Your productive use is Office, browsing, dev.

In those cases, the $800 USD is better invested in:

• 32→64 GB RAM on the 5070 laptop.
• 2 TB SSD instead of 1 TB.
• OLED 240 Hz vs standard IPS display.

Summary table

| Metric | RTX 5070 | RTX 5080 | |---|---|---| | 1440p AAA gaming | baseline | +35-40% | | 4K AAA gaming | unviable solo | viable with DLSS | | VRAM | 12 GB | 16 GB | | 14B Q6 LLM | tight | comfortable | | 30B Q4 LLM | unviable | with offload | | Blender render | baseline | +30% | | Laptop price | baseline | +$700-900 USD |

FAQ

Worth RTX 5070 Ti (when released)? Rumors indicate 12 GB too but more CUDA cores and bandwidth. Interesting middle ground. Worth waiting if you can.

Is RTX 5080 mobile with 16 GB enough for SDXL? Yes, with headroom. For FLUX dev or newer models can be tight on complex workflows.

Does RTX 5080 Ti mobile exist? Not announced in 2026. Likely Q3-Q4 2026 with 18-20 GB.

Buy RTX 5080 mobile or desktop RTX 5070 Ti? If you need portability, mobile. If you'll work at fixed desk and want more perf per dollar, desktop. Desktop RTX 5070 Ti beats mobile 5080 at similar price.

Which fits your real use?

Tell the AI advisor your main use (1440p gaming, AI with large models, editing, etc.), monitor resolution and budget. You'll know if the premium is worth it.