Head-to-Head Showdown

Razer Blade 16 (RTX 4090 Mobile 16GB) vs Lenovo Legion Pro 7i (RTX 4080 12GB)

Comparing x86 architecture against x86 for local AI inference. Review generation throughput, memory architecture, and runner compatibility.

Select Any Two Systems to Compare Head-to-Head

System A (Left)

System B (Right)

System A

Razer Blade 16 (RTX 4090 Mobile 16GB)

Intel Core i9-14900HX + NVIDIA RTX 4090 (16GB VRAM)

32 GB Memoryx86~76.4 t/s

System B

Intel Core i9-14900HX + NVIDIA RTX 4080 (12GB VRAM)

32 GB Memoryx86~57.3 t/s

Specification	Razer Blade 16 (RTX 4090 Mobile 16GB)	Lenovo Legion Pro 7i (RTX 4080 12GB)
Architecture	x86	x86
Processor	Intel Core i9-14900HX + NVIDIA RTX 4090 (16GB VRAM)	Intel Core i9-14900HX + NVIDIA RTX 4080 (12GB VRAM)
Operating System	Windows x86	Windows x86
System RAM / Unified Memory	32 GB	32 GB
GPU-Usable Memory (VRAM or unified)	16 GB	12 GB
Memory Bandwidth	576 GB/s	432 GB/s
Memory Type & Bandwidth	32 DDR5-5600 + 16GB GDDR6 VRAM (576 GB/s, laptop RTX 4090)	32 DDR5-5600 + 12GB GDDR6 VRAM (432 GB/s, laptop RTX 4080)
NPU Acceleration (TOPS)	686 TOPS	487 TOPS
Small models (3–7B)	Yes (Compatible)	Yes (Compatible)
8B models (Qwen3 8B)	Yes (Compatible)	Yes (Compatible)
Estimated 8B Generation Speed	~76.4 t/s	~57.3 t/s
Recommended Max Context	32k tokens	32k tokens
Power Consumption Envelope	120-220W	110-175W

The buying and sizing guides that explain the numbers above.