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 3090

2020

Why buy it

✅24.0% more average FPS across 50 tracked games in our benchmark data.
✅41.4% more Tensor Cores for AI-powered features like DLSS and frame generation, which can increase overall FPS in supported games (328 vs 232).
✅100% more VRAM for high-resolution textures and newer games (24 GB vs 12 GB).

Trade-offs

❌No equivalent frame-generation stack like DLSS 3.5 + Frame Generation (2023).
❌Weaker long-term outlook: GeForce RTX 4080 Mobile is the safer future-proof pick thanks to newer hardware and better gaming feature support.
❌
32.7% HIGHER MSRP
$1,499 MSRPvs$1,130 MSRP
❌Lower G3D Mark per dollar, at 17.7 vs 22.0 G3D/$ ($1,499 MSRP vs $1,130 MSRP).
❌133.3% higher power demand at 350W vs 150W.

GeForce RTX 4080 Mobile

2023

Why buy it

✅Costs $369 less on MSRP ($1,130 MSRP vs $1,499 MSRP).
✅Delivers 23.7% more G3D Mark for each dollar spent, at 22.0 vs 17.7 G3D/$ ($1,130 MSRP vs $1,499 MSRP).
✅Access to a newer frame-generation stack with DLSS 3.5 + Frame Generation (2023).
✅More future proof: Ada Lovelace (2022−2024) on 4nm with a newer platform for upcoming games.
✅Draws 150W instead of 350W, a 200W reduction.

Trade-offs

❌Lower average FPS than GeForce RTX 3090 across 50 tracked games in our benchmark data.
❌Less VRAM, with 12 GB vs 24 GB for high-resolution textures and newer games.
❌Fewer Tensor Cores for AI-powered features like DLSS and frame generation (232 vs 328), which can reduce FPS gains in supported games.

GeForce RTX 3090

2020

GeForce RTX 4080 Mobile

2023

Why buy it

✅24.0% more average FPS across 50 tracked games in our benchmark data.
✅41.4% more Tensor Cores for AI-powered features like DLSS and frame generation, which can increase overall FPS in supported games (328 vs 232).
✅100% more VRAM for high-resolution textures and newer games (24 GB vs 12 GB).

Why buy it

✅Costs $369 less on MSRP ($1,130 MSRP vs $1,499 MSRP).
✅Delivers 23.7% more G3D Mark for each dollar spent, at 22.0 vs 17.7 G3D/$ ($1,130 MSRP vs $1,499 MSRP).
✅Access to a newer frame-generation stack with DLSS 3.5 + Frame Generation (2023).
✅More future proof: Ada Lovelace (2022−2024) on 4nm with a newer platform for upcoming games.
✅Draws 150W instead of 350W, a 200W reduction.

Trade-offs

❌No equivalent frame-generation stack like DLSS 3.5 + Frame Generation (2023).
❌Weaker long-term outlook: GeForce RTX 4080 Mobile is the safer future-proof pick thanks to newer hardware and better gaming feature support.
❌
32.7% HIGHER MSRP
$1,499 MSRPvs$1,130 MSRP
❌Lower G3D Mark per dollar, at 17.7 vs 22.0 G3D/$ ($1,499 MSRP vs $1,130 MSRP).
❌133.3% higher power demand at 350W vs 150W.

Trade-offs

❌Lower average FPS than GeForce RTX 3090 across 50 tracked games in our benchmark data.
❌Less VRAM, with 12 GB vs 24 GB for high-resolution textures and newer games.
❌Fewer Tensor Cores for AI-powered features like DLSS and frame generation (232 vs 328), which can reduce FPS gains in supported games.

Quick Answers

So, is GeForce RTX 3090 better than GeForce RTX 4080 Mobile?

Yes. GeForce RTX 3090 is the better GPU overall here. You are getting 24.0% more average FPS across 50 tracked games in our benchmark data, 7.2% higher PassMark G3D performance, 328 vs 232 Tensor cores, and 24 GB vs 12 GB of VRAM. It also comes from 2020 instead of 2023, which helps its case as the more complete modern gaming card.

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

GeForce RTX 4080 Mobile is the more future-proof choice for 2026 and beyond. You are getting a newer 2023 generation instead of 2020, 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 broader feature stack should age better as more games lean on modern upscaling and frame-generation support.

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

GeForce RTX 4080 Mobile is easier to justify on price alone at $1,130 MSRP, but GeForce RTX 3090 is still the stronger gaming card overall. GeForce RTX 3090 is about 32.7% more expensive on MSRP at $1,499 MSRP versus $1,130 MSRP, and you are getting 24.0% more estimated average FPS across 50 tracked games in our benchmark data and 7.2% higher G3D Mark. GeForce RTX 4080 Mobile still holds the G3D-per-dollar lead, so the performance win comes with a real value premium. Go with GeForce RTX 3090 if you want the better experience; go with GeForce RTX 4080 Mobile if keeping cost down matters more than squeezing out the highest performance.

When does GeForce RTX 4080 Mobile make more sense than GeForce RTX 3090?

Yes. GeForce RTX 4080 Mobile is still an excellent gaming GPU in 2026: it is excellent for 1080p, very strong for 1440p, and still capable at 4K with sensible settings or upscaling. It makes more sense if your priority is newer architecture, lower power draw (150W vs 350W), future-proofing, and staying closer to $1,130 MSRP more than squeezing out the extra headroom of GeForce RTX 3090. The trade-off is that GeForce RTX 3090 currently gives you 7.2% higher G3D Mark and 24.0% more estimated average FPS across 50 tracked games in our benchmark data. GeForce RTX 4080 Mobile still holds the G3D-per-dollar lead, so the performance win comes with a real value premium.

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 3090 Benchmark Check

GeForce RTX 4080 Mobile Benchmark Check

Path of Exile 2

Preset	GeForce RTX 3090	GeForce RTX 4080 Mobile
1080p
low	259 FPS	174 FPS
medium	240 FPS	158 FPS
high	201 FPS	140 FPS
ultra	176 FPS	123 FPS
1440p
low	249 FPS	145 FPS
medium	208 FPS	120 FPS
high	162 FPS	104 FPS
ultra	145 FPS	93 FPS
4K
low	167 FPS	87 FPS
medium	138 FPS	73 FPS
high	98 FPS	58 FPS
ultra	87 FPS	51 FPS

Open GeForce RTX 3090 Open GeForce RTX 4080 Mobile

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	GeForce RTX 3090	GeForce RTX 4080 Mobile
1080p
low	648 FPS	422 FPS
medium	557 FPS	365 FPS
high	440 FPS	295 FPS
ultra	382 FPS	259 FPS
1440p
low	475 FPS	326 FPS
medium	405 FPS	272 FPS
high	319 FPS	222 FPS
ultra	263 FPS	186 FPS
4K
low	229 FPS	179 FPS
medium	193 FPS	155 FPS
high	161 FPS	132 FPS
ultra	134 FPS	108 FPS

Open GeForce RTX 3090 Open GeForce RTX 4080 Mobile

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	GeForce RTX 3090	GeForce RTX 4080 Mobile
1080p
low	909 FPS	885 FPS
medium	745 FPS	722 FPS
high	664 FPS	634 FPS
ultra	574 FPS	550 FPS
1440p
low	711 FPS	696 FPS
medium	583 FPS	564 FPS
high	508 FPS	483 FPS
ultra	434 FPS	413 FPS
4K
low	489 FPS	474 FPS
medium	406 FPS	385 FPS
high	349 FPS	329 FPS
ultra	289 FPS	267 FPS

Open GeForce RTX 3090 Open GeForce RTX 4080 Mobile

League of Legends

League of Legends

Valorant

Preset	GeForce RTX 3090	GeForce RTX 4080 Mobile
1080p
low	821 FPS	467 FPS
medium	765 FPS	410 FPS
high	675 FPS	345 FPS
ultra	598 FPS	303 FPS
1440p
low	656 FPS	387 FPS
medium	609 FPS	342 FPS
high	534 FPS	285 FPS
ultra	449 FPS	244 FPS
4K
low	475 FPS	245 FPS
medium	443 FPS	221 FPS
high	397 FPS	188 FPS
ultra	299 FPS	163 FPS

Open GeForce RTX 3090 Open GeForce RTX 4080 Mobile

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of GeForce RTX 3090 and GeForce RTX 4080 Mobile

GeForce RTX 3090

The GeForce RTX 3090 is manufactured by NVIDIA. It was released in September 1 2020. It features the Ampere architecture. The core clock ranges from 1395 MHz to 1695 MHz. It has 10496 shading units. The thermal design power (TDP) is 350W. Manufactured using 8 nm process technology. It features 82 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 26,594 points. Launch price was $1,499.

GeForce RTX 4080 Mobile

The GeForce RTX 4080 Mobile is manufactured by NVIDIA. It was released in January 3 2023. It features the Ada Lovelace architecture. The core clock ranges from 1290 MHz to 2010 MHz. It has 7424 shading units. The thermal design power (TDP) is 150W. Manufactured using 4 nm process technology. It features 58 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 24,805 points.

⚡

Graphics Performance

In G3D Mark, the GeForce RTX 3090 scores 26,594 versus the GeForce RTX 4080 Mobile's 24,805 — the GeForce RTX 3090 leads by 7.2%. The GeForce RTX 3090 is built on Ampere while the GeForce RTX 4080 Mobile uses Ada Lovelace, both on 8 nm vs 4 nm. Shader units: 10,496 (GeForce RTX 3090) vs 7,424 (GeForce RTX 4080 Mobile). Raw compute: 35.58 TFLOPS (GeForce RTX 3090) vs 24.72 TFLOPS (GeForce RTX 4080 Mobile). Boost clocks: 1695 MHz vs 2010 MHz. Ray tracing: 82 RT cores (GeForce RTX 3090) vs 58 (GeForce RTX 4080 Mobile) with 328 Tensor cores vs 232.

Feature	GeForce RTX 3090	GeForce RTX 4080 Mobile
G3D Mark Score	26,594+7%	24,805
Architecture	Ampere	Ada Lovelace
Process Node	8 nm	4 nm
Shading Units	10496+41%	7424
Compute (TFLOPS)	35.58 TFLOPS+44%	24.72 TFLOPS
Boost Clock	1695 MHz	2010 MHz+19%
ROPs	112+40%	80
TMUs	328+41%	232
L1 Cache	10.3 MB+41%	7.3 MB
L2 Cache	6 MB	48 MB+700%
Ray Tracing Cores	82+41%	58
Tensor Cores	328+41%	232

✨

Advanced Features (DLSS/FSR)

A critical advantage for the GeForce RTX 4080 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 3090 lacks specific hardware/driver support for this native frame generation tier.The GeForce RTX 4080 Mobile supports the newer DLSS 3.5 Super Resolution, whereas the GeForce RTX 3090 is capped at DLSS 2 Super Resolution.

Feature	GeForce RTX 3090	GeForce RTX 4080 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 3090 comes with 24 GB of VRAM, while the GeForce RTX 4080 Mobile has 12 GB. The GeForce RTX 3090 offers 100% more capacity, crucial for higher resolutions and texture-heavy games. Memory bandwidth: 936 GB/s (GeForce RTX 3090) vs 432 GB/s (GeForce RTX 4080 Mobile) — a 116.7% advantage for the GeForce RTX 3090. Bus width: 384-bit vs 192-bit. L2 Cache: 6 MB (GeForce RTX 3090) vs 48 MB (GeForce RTX 4080 Mobile) — the GeForce RTX 4080 Mobile has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce RTX 3090	GeForce RTX 4080 Mobile
VRAM Capacity	24 GB+100%	12 GB
Memory Type	GDDR6X	GDDR6
Memory Bandwidth	936 GB/s+117%	432 GB/s
Bus Width	384-bit+100%	192-bit
L2 Cache	6 MB	48 MB+700%

🖥️

Display & API Support

DirectX support: 12 Ultimate (GeForce RTX 3090) vs 12.2 (GeForce RTX 4080 Mobile). Vulkan: 1.4 vs 1.3. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 4 vs 1.

Feature	GeForce RTX 3090	GeForce RTX 4080 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 3090) vs 8th Gen NVENC (GeForce RTX 4080 Mobile). Decoder: NVDEC 5th gen vs 5th Gen NVDEC. Supported codecs: H.264,H.265/HEVC,AV1 (GeForce RTX 3090) vs MPEG-2,H.264,HEVC,VP9,AV1 (GeForce RTX 4080 Mobile).

Feature	GeForce RTX 3090	GeForce RTX 4080 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 3090 draws 350W versus the GeForce RTX 4080 Mobile's 150W — a 80% difference. The GeForce RTX 4080 Mobile is more power-efficient. Recommended PSU: 750W (GeForce RTX 3090) vs 650W (GeForce RTX 4080 Mobile). Power connectors: 2x 8-pin vs Mobile. Card length: 312mm vs 0mm, occupying 3 vs 0 slots. Typical load temperature: 85°C vs 80°C.

Feature	GeForce RTX 3090	GeForce RTX 4080 Mobile
TDP	350W	150W-57%
Recommended PSU	750W	650W-13%
Power Connector	2x 8-pin	Mobile
Length	312mm	0mm
Height	140mm	0mm
Slots	3	0-100%
Temp (Load)	85°C	80°C-6%
Perf/Watt	76.0	165.4+118%

💰

Value Analysis

The GeForce RTX 3090 launched at $1499 MSRP, while the GeForce RTX 4080 Mobile launched at $1130. The GeForce RTX 4080 Mobile costs 24.6% less ($369 savings) on MSRP. Performance per dollar on MSRP (G3D Mark / MSRP): 17.7 (GeForce RTX 3090) vs 22.0 (GeForce RTX 4080 Mobile) — the GeForce RTX 4080 Mobile offers 24.3% better value. The GeForce RTX 4080 Mobile is the newer GPU (2023 vs 2020).