Nvidia GeForce RTX 4090 vs Nvidia GeForce RTX 3080 Mobile

Updated Jun 2026 · Scored by the Let’s Compare Data Engine · How we score

For most buyers the Nvidia GeForce RTX 4090 is the better pick — it scores 85/100 to the Nvidia GeForce RTX 3080 Mobile's 45, leading on Memory and Theoretical Performance. Choose the Nvidia GeForce RTX 3080 Mobile instead if core specifications matters most to you, where it comes out ahead.

Verdict

Our overall take, at a glance

Nvidia GeForce RTX 4090 leads overall

Nvidia GeForce RTX 4090

Nvidia GeForce RTX 3080 Mobile

Why it stands out

Core Specifications Maximum Power: 450 W (200% more)
Memory Capacity: 24 GB (200% more)
Memory Bandwidth: 1,008 GB/s (125% more)

Winner by category for Nvidia GeForce RTX 4090 vs Nvidia GeForce RTX 3080 Mobile
Category	Nvidia GeForce RTX 4090	Nvidia GeForce RTX 3080 Mobile	Winner
Core Specifications	40	85	Nvidia GeForce RTX 3080 Mobile
Memory	86	37	Nvidia GeForce RTX 4090
API Support	50	50	Tie
Theoretical Performance	96	46	Nvidia GeForce RTX 4090
Benchmark	93	41	Nvidia GeForce RTX 4090
Miscellaneous	87	32	Nvidia GeForce RTX 4090

In-depth analysisAI

AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Jun 2026.

Nvidia GeForce RTX 4090

The GeForce RTX 4090 is the flagship graphics card in Nvidia's consumer GPU family, succeeding the GeForce RTX 30 series. It is based on Nvidia's Ada Lovelace architecture and features third-generation RT cores and fourth-generation Tensor Cores for hardware acceleration.

Best for High-end graphics tasks

Pros

Features a TSMC 4N process designed by Nvidia
Includes three-generation Ray Tracing Cores for accelerated ray tracing
Supports OpenGL 4.6, Vulkan 1.4, and DirectX Direct3D 12.0 Ultimate APIs
Features dual NVENC with 8K 10-bit 120FPS AV1 fixed function hardware encoding

Cons

No NVLink support
Double-precision performance is 1/64 of single-precision performance

Nvidia GeForce RTX 3080 Mobile

The Nvidia GeForce RTX 3080 Mobile is a powerful graphics processing unit designed for demanding laptops, enabling high-fidelity gaming and complex creative workflows on the go. Its performance architecture, based on Ampere, makes it suitable for users who require desktop-class GPU performance in portable form factors. It targets enthusiasts and professionals who prioritize graphical capabilities without sacrificing mobility.

Best for PC GamingBest for Content CreationBest for Portable Workstations

Pros

Delivers advanced graphics features through its RTX 30 series components.
Appropriate for tasks requiring high processing power, compared to lower-tier mobile GPUs.
Supports modern APIs such as Direct3D and Vulkan.

Cons

Performance is dependent on the specific laptop manufacturer's thermal design and power limits (Mobile GPU nature).
Older generation architecture relative to subsequent Nvidia releases.

Value for Money

Which is the better deal for the price

Pre-filled with launch prices where known — enter today's price for an up-to-date check. Use the same currency for both.

Nvidia GeForce RTX 4090

Check Price on Amazon

Nvidia GeForce RTX 3080 Mobile

Check Price on Amazon

Performance

Higher benchmark score = faster

Nvidia GeForce RTX 409038,037

Nvidia GeForce RTX 3080 Mobile16,036

See the raw benchmark values →

Benchmark score — a measured indicator of raw performance, not a guarantee of real-world speed.

Review Videos

Hand-picked expert reviews for each product

Detailed Specifications

The full spec sheet, side by side

Core Specifications

Feature	Nvidia GeForce RTX 4090	Nvidia GeForce RTX 3080 Mobile
Base Frequency	2.23 GHz	N/A
Base Power	N/A	80 W
Maximum Frequency	2.52 GHz	1.81 GHz
Maximum Power	450 W200% more	150 W
Lithography Process	5 nm38% less	8 nm

Memory

Feature	Nvidia GeForce RTX 4090	Nvidia GeForce RTX 3080 Mobile
Capacity	24 GB200% more	8 GB
Technology
Bus Width	384 bit	256 bit
Bandwidth	1,008 GB/s125% more	448 GB/s
Is Shared	No	No

API Support

Feature	Nvidia GeForce RTX 4090	Nvidia GeForce RTX 3080 Mobile
DirectX Version	12	12
OpenGL Version	4.6	4.6
Vulkan Version	1.4	1.4
OpenCL Version	3	3

Theoretical Performance

Feature	Nvidia GeForce RTX 4090	Nvidia GeForce RTX 3080 Mobile
Pixel Rate	443.5 GP/s	148.3 GP/s
Texture Rate	1,290 GT/s	296.6 GT/s
Performance (FP16)	82.575 TFLOPS272% more	22.2 TFLOPS
Performance (FP32)	82.6 TFLOPS272% more	22.2 TFLOPS
Performance (FP64)	1,290 GFLOPS	328 GFLOPS

Benchmark

Feature	Nvidia GeForce RTX 4090	Nvidia GeForce RTX 3080 Mobile
G3D Mark	38,037137% more	16,036

Miscellaneous

Feature	Nvidia GeForce RTX 4090	Nvidia GeForce RTX 3080 Mobile
Release Date	October 12, 2022	January 12, 2021
Platform

Specification Note

Specifications are compiled from official manufacturer data and other reliable internet sources. Some features may vary by region or model configuration.

Frequently Asked Questions

Common questions about Nvidia GeForce RTX 4090 vs Nvidia GeForce RTX 3080 Mobile comparison

Based on our overall comparison score, Nvidia GeForce RTX 4090 rates higher at 92/100 versus 55/100 for Nvidia GeForce RTX 3080 Mobile — a 37-point lead. Nvidia GeForce RTX 4090 is the stronger overall pick, though the right choice still depends on which specs matter most to you; the full spec table above breaks down every difference.

Nvidia GeForce RTX 4090 and Nvidia GeForce RTX 3080 Mobile are compared side by side above across every spec in the gpus category — including performance, features and design — each scored 0–100 so you can see exactly where one leads the other. Our overall scores are 92/100 for Nvidia GeForce RTX 4090 and 55/100 for Nvidia GeForce RTX 3080 Mobile.

If you want the higher-rated gpus option overall, Nvidia GeForce RTX 4090 (92/100) edges out Nvidia GeForce RTX 3080 Mobile (55/100). But if Nvidia GeForce RTX 3080 Mobile is cheaper or stronger on the specific specs you care about, it can still be the better buy — use the spec table and strengths profile above to decide.