G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, raw graphics performance, VRAM, feature set, power efficiency, pricing context, and long-term value so you can see which GPU actually makes more sense.

GeForce RTX 3080 12GB

2022

Why buy it

✅Delivers 100+% more G3D Mark for each dollar spent, at 21.3 vs 0 G3D/$ ($1,250 MSRP vs Unknown MSRP).

Trade-offs

❌Lower average FPS than GeForce RTX 4090 Mobile across 50 tracked games in our benchmark data.
❌Less VRAM, with 12 GB vs 16 GB for high-resolution textures and newer games.
❌No equivalent frame-generation stack like DLSS 3.5 + Frame Generation (2023).
❌Weaker long-term outlook: GeForce RTX 4090 Mobile is the safer future-proof pick thanks to newer hardware and better gaming feature support.
❌191.7% higher power demand at 350W vs 120W.

GeForce RTX 4090 Mobile

2023

Why buy it

✅18.9% more average FPS across 50 tracked games in our benchmark data.
✅Access to a newer frame-generation stack with DLSS 3.5 + Frame Generation (2023).
✅33.3% more VRAM for high-resolution textures and newer games (16 GB vs 12 GB).
✅More future proof: Ada Lovelace (2022−2024) on 4nm with a newer platform for upcoming games.
✅Draws 120W instead of 350W, a 230W reduction.

Trade-offs

❌Lower G3D Mark per dollar, at 0 vs 21.3 G3D/$ (Unknown MSRP vs $1,250 MSRP).

GeForce RTX 3080 12GB

2022

GeForce RTX 4090 Mobile

2023

Why buy it

✅Delivers 100+% more G3D Mark for each dollar spent, at 21.3 vs 0 G3D/$ ($1,250 MSRP vs Unknown MSRP).

Why buy it

✅18.9% more average FPS across 50 tracked games in our benchmark data.
✅Access to a newer frame-generation stack with DLSS 3.5 + Frame Generation (2023).
✅33.3% more VRAM for high-resolution textures and newer games (16 GB vs 12 GB).
✅More future proof: Ada Lovelace (2022−2024) on 4nm with a newer platform for upcoming games.
✅Draws 120W instead of 350W, a 230W reduction.

Trade-offs

❌Lower average FPS than GeForce RTX 4090 Mobile across 50 tracked games in our benchmark data.
❌Less VRAM, with 12 GB vs 16 GB for high-resolution textures and newer games.
❌No equivalent frame-generation stack like DLSS 3.5 + Frame Generation (2023).
❌Weaker long-term outlook: GeForce RTX 4090 Mobile is the safer future-proof pick thanks to newer hardware and better gaming feature support.
❌191.7% higher power demand at 350W vs 120W.

Trade-offs

❌Lower G3D Mark per dollar, at 0 vs 21.3 G3D/$ (Unknown MSRP vs $1,250 MSRP).

Quick Answers

So, is GeForce RTX 4090 Mobile better than GeForce RTX 3080 12GB?

Yes. GeForce RTX 4090 Mobile is the better GPU overall here. You are getting 18.9% more average FPS across 50 tracked games in our benchmark data, 1.8% higher PassMark G3D performance, 304 vs 280 Tensor cores, and 16 GB vs 12 GB of VRAM. It also comes from 2023 instead of 2022, which helps its case as the more complete modern gaming card.

Which one is more future-proof for 2026 and beyond?

GeForce RTX 4090 Mobile is the more future-proof choice for 2026 and beyond. You are getting a newer 2023 generation instead of 2022, more VRAM at 16 GB instead of 12 GB, better upscaling support with DLSS 3.5 Super Resolution (2023) instead of DLSS 2 Super Resolution (2020) and better frame-generation support with DLSS 3.5 + Frame Generation (2023) instead of DLSS Super Resolution, and a 4nm process instead of 8nm. That extra memory headroom makes it the safer pick for newer games, heavier textures, and higher settings over time.

Which one is the smarter buy today, not just the cheaper card?

GeForce RTX 4090 Mobile is priced in an unclear MSRP range at an unclear MSRP versus $1,250 MSRP, and you are getting 18.9% more estimated average FPS across 50 tracked games in our benchmark data and 1.8% higher G3D Mark. GeForce RTX 3080 12GB still holds the G3D-per-dollar lead, so the performance win comes with a real value premium. If you are comfortable paying the premium for the stronger gaming result, GeForce RTX 4090 Mobile is the one to buy. If staying closer to budget matters more, GeForce RTX 3080 12GB still makes more sense on price alone and remains capable enough for modern gaming.

Is GeForce RTX 3080 12GB still worth buying for gaming in 2026?

Yes. GeForce RTX 3080 12GB is still a strong gaming GPU in 2026: it is excellent for 1080p, very strong for 1440p, and still capable at 4K with sensible settings or upscaling. This mostly comes down to price. If you want to stay closer to $1,250 MSRP, it remains a strong choice; if you are comfortable paying more, GeForce RTX 4090 Mobile earns that extra money with a clearly stronger gaming result and a more complete overall package.

Games Benchmarks

Real-world benchmarks and performance projections based on comprehensive hardware analysis and comparative metrics. Values represent expected performance on High/Ultra settings at 1080p, 1440p, and 4K. Modeled using a Ryzen 7 9800X3D reference profile to minimize specific CPU bottlenecks.

Note: Performance behavior can vary per game. Specific architectures may perform better or worse depending on game engine optimizations and API implementation.

GeForce RTX 3080 12GB Benchmark Check

GeForce RTX 4090 Mobile Benchmark Check

Path of Exile 2

Preset	GeForce RTX 3080 12GB	GeForce RTX 4090 Mobile
1080p
low	165 FPS	204 FPS
medium	150 FPS	190 FPS
high	132 FPS	163 FPS
ultra	113 FPS	149 FPS
1440p
low	139 FPS	188 FPS
medium	115 FPS	159 FPS
high	98 FPS	128 FPS
ultra	85 FPS	118 FPS
4K
low	80 FPS	123 FPS
medium	67 FPS	102 FPS
high	51 FPS	76 FPS
ultra	45 FPS	70 FPS

Open GeForce RTX 3080 12GB Open GeForce RTX 4090 Mobile

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	GeForce RTX 3080 12GB	GeForce RTX 4090 Mobile
1080p
low	553 FPS	501 FPS
medium	473 FPS	438 FPS
high	383 FPS	353 FPS
ultra	345 FPS	296 FPS
1440p
low	415 FPS	383 FPS
medium	344 FPS	332 FPS
high	273 FPS	268 FPS
ultra	233 FPS	220 FPS
4K
low	198 FPS	214 FPS
medium	168 FPS	187 FPS
high	144 FPS	159 FPS
ultra	120 FPS	131 FPS

Open GeForce RTX 3080 12GB Open GeForce RTX 4090 Mobile

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	GeForce RTX 3080 12GB	GeForce RTX 4090 Mobile
1080p
low	892 FPS	884 FPS
medium	724 FPS	735 FPS
high	631 FPS	661 FPS
ultra	551 FPS	570 FPS
1440p
low	705 FPS	697 FPS
medium	567 FPS	577 FPS
high	484 FPS	508 FPS
ultra	416 FPS	433 FPS
4K
low	485 FPS	474 FPS
medium	394 FPS	396 FPS
high	331 FPS	347 FPS
ultra	275 FPS	282 FPS

Open GeForce RTX 3080 12GB Open GeForce RTX 4090 Mobile

League of Legends

League of Legends

Valorant

Preset	GeForce RTX 3080 12GB	GeForce RTX 4090 Mobile
1080p
low	456 FPS	723 FPS
medium	413 FPS	655 FPS
high	339 FPS	573 FPS
ultra	295 FPS	528 FPS
1440p
low	366 FPS	581 FPS
medium	334 FPS	520 FPS
high	273 FPS	456 FPS
ultra	233 FPS	408 FPS
4K
low	245 FPS	400 FPS
medium	226 FPS	364 FPS
high	191 FPS	334 FPS
ultra	166 FPS	296 FPS

Open GeForce RTX 3080 12GB Open GeForce RTX 4090 Mobile

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of GeForce RTX 3080 12GB and GeForce RTX 4090 Mobile

GeForce RTX 3080 12GB

The GeForce RTX 3080 12GB is manufactured by NVIDIA. It was released in January 11 2022. It features the Ampere architecture. The core clock ranges from 1260 MHz to 1710 MHz. It has 8960 shading units. The thermal design power (TDP) is 350W. Manufactured using 8 nm process technology. It features 70 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 26,569 points. Launch price was $799.

GeForce RTX 4090 Mobile

The GeForce RTX 4090 Mobile is manufactured by NVIDIA. It was released in January 3 2023. It features the Ada Lovelace architecture. The core clock ranges from 1335 MHz to 1695 MHz. It has 9728 shading units. The thermal design power (TDP) is 120W. Manufactured using 4 nm process technology. It features 76 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 27,048 points.

⚡

Graphics Performance

The GeForce RTX 3080 12GB scores 26,569 and the GeForce RTX 4090 Mobile reaches 27,048 in the G3D Mark benchmark — just a 1.8% difference, making them near-identical in rasterization performance. The GeForce RTX 3080 12GB is built on Ampere while the GeForce RTX 4090 Mobile uses Ada Lovelace, both on 8 nm vs 4 nm. Shader units: 8,960 (GeForce RTX 3080 12GB) vs 9,728 (GeForce RTX 4090 Mobile). Raw compute: 30.64 TFLOPS (GeForce RTX 3080 12GB) vs 32.98 TFLOPS (GeForce RTX 4090 Mobile). Boost clocks: 1710 MHz vs 1695 MHz. Ray tracing: 70 RT cores (GeForce RTX 3080 12GB) vs 76 (GeForce RTX 4090 Mobile) with 280 Tensor cores vs 304.

Feature	GeForce RTX 3080 12GB	GeForce RTX 4090 Mobile
G3D Mark Score	26,569	27,048+2%
Architecture	Ampere	Ada Lovelace
Process Node	8 nm	4 nm
Shading Units	8960	9728+9%
Compute (TFLOPS)	30.64 TFLOPS	32.98 TFLOPS+8%
Boost Clock	1710 MHz	1695 MHz
ROPs	96	112+17%
TMUs	280	304+9%
L1 Cache	8.8 MB	9.5 MB+8%
L2 Cache	6 MB	64 MB+967%
Ray Tracing Cores	70	76+9%
Tensor Cores	280	304+9%

✨

Advanced Features (DLSS/FSR)

A critical advantage for the GeForce RTX 4090 Mobile is support for DLSS 3.5 + Frame Generation. This allows it to generate entire frames using AI/Algorithms, essentially doubling the frame rate in CPU-bound scenarios or heavy ray-tracing titles. The GeForce RTX 3080 12GB lacks specific hardware/driver support for this native frame generation tier.The GeForce RTX 4090 Mobile supports the newer DLSS 3.5 Super Resolution, whereas the GeForce RTX 3080 12GB is capped at DLSS 2 Super Resolution.

Feature	GeForce RTX 3080 12GB	GeForce RTX 4090 Mobile
Upscaling Tech	DLSS 2 Super Resolution	DLSS 3.5 Super Resolution
Frame Generation	Not Supported	DLSS 3.5 + Frame Generation
Ray Reconstruction	No	Yes (DLSS 3.5)
Low Latency	NVIDIA Reflex	NVIDIA Reflex

💾

Video Memory (VRAM)

The GeForce RTX 3080 12GB comes with 12 GB of VRAM, while the GeForce RTX 4090 Mobile has 16 GB. The GeForce RTX 4090 Mobile offers 33.3% more capacity, crucial for higher resolutions and texture-heavy games. Memory bandwidth: 912 GB/s (GeForce RTX 3080 12GB) vs 576 GB/s (GeForce RTX 4090 Mobile) — a 58.3% advantage for the GeForce RTX 3080 12GB. Bus width: 384-bit vs 256-bit. L2 Cache: 6 MB (GeForce RTX 3080 12GB) vs 64 MB (GeForce RTX 4090 Mobile) — the GeForce RTX 4090 Mobile has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce RTX 3080 12GB	GeForce RTX 4090 Mobile
VRAM Capacity	12 GB	16 GB+33%
Memory Type	GDDR6X	GDDR6
Memory Bandwidth	912 GB/s+58%	576 GB/s
Bus Width	384-bit+50%	256-bit
L2 Cache	6 MB	64 MB+967%

🖥️

Display & API Support

DirectX support: 12 Ultimate (GeForce RTX 3080 12GB) vs 12.2 (GeForce RTX 4090 Mobile). Vulkan: 1.4 vs 1.3. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 4 vs 1.

Feature	GeForce RTX 3080 12GB	GeForce RTX 4090 Mobile
DirectX	12 Ultimate	12.2+2%
Vulkan	1.4+8%	1.3
OpenGL	4.6	4.6
Max Displays	4+300%	1

🎬

Media & Encoding

Hardware encoder: NVENC 7th gen (GeForce RTX 3080 12GB) vs 8th Gen NVENC (GeForce RTX 4090 Mobile). Decoder: NVDEC 5th gen vs 5th Gen NVDEC. Supported codecs: H.264,H.265/HEVC,AV1 (GeForce RTX 3080 12GB) vs MPEG-2,H.264,HEVC,VP9,AV1 (GeForce RTX 4090 Mobile).

Feature	GeForce RTX 3080 12GB	GeForce RTX 4090 Mobile
Encoder	NVENC 7th gen	8th Gen NVENC
Decoder	NVDEC 5th gen	5th Gen NVDEC
Codecs	H.264,H.265/HEVC,AV1	MPEG-2,H.264,HEVC,VP9,AV1

🔌

Power & Dimensions

The GeForce RTX 3080 12GB draws 350W versus the GeForce RTX 4090 Mobile's 120W — a 97.9% difference. The GeForce RTX 4090 Mobile is more power-efficient. Recommended PSU: 750W (GeForce RTX 3080 12GB) vs 650W (GeForce RTX 4090 Mobile). Power connectors: 2x 8-pin vs Mobile. Card length: 285mm vs 0mm, occupying 2 vs 0 slots. Typical load temperature: 80°C vs 80°C.

Feature	GeForce RTX 3080 12GB	GeForce RTX 4090 Mobile
TDP	350W	120W-66%
Recommended PSU	750W	650W-13%
Power Connector	2x 8-pin	Mobile
Length	285mm	0mm
Height	112mm	0mm
Slots	2	0-100%
Temp (Load)	80°C	80°C
Perf/Watt	75.9	225.4+197%