GeForce GTX 675MX vs Radeon Steam Deck 8CU

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.

GeForce GTX 675MX vs Radeon Steam Deck 8CU FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with Ryzen 7 9800X3D to isolate GPU performance.

Search any supported game below to compare 1080p FPS for both components.

GeForce GTX 675MX vs Radeon Steam Deck 8CU: Pros, Cons & Final Verdict

See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.

GeForce GTX 675MX

2012

Why buy it

✅100% more VRAM for high-resolution textures and newer games (4 GB vs 2 GB).

Trade-offs

❌Lower average FPS than Radeon Steam Deck 8CU across 50 tracked games in our benchmark data.
❌2012 hardware with 4 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌233.3% higher power demand at 100W vs 30W.

Radeon Steam Deck 8CU

2023

Why buy it

✅32.1% more average FPS across 50 tracked games in our benchmark data.
✅Better long-term bet: RDNA 2 (2022−2023) on 6nm gives it a newer hardware base for upcoming games.
✅Draws 30W instead of 100W, a 70W reduction.

Trade-offs

❌Less VRAM, with 2 GB vs 4 GB for high-resolution textures and newer games.

Quick Answers

Which GPU is faster for gaming right now?

Radeon Steam Deck 8CU is the faster gaming card right now. In our data, it leads by 32.1% in average FPS across 50 tracked games in our benchmark data and by 1.7% in PassMark G3D (3,000 vs 2,951), so the answer here is pretty clean.

Which GPU is the safer long-term pick for 2026 and beyond?

Radeon Steam Deck 8CU is the safer long-term pick for 2026 and beyond. The case is simple: the newer upscaling stack, FSR Upscaling / FSR 4 (2025) instead of no meaningful modern upscaling stack, a 6nm process instead of 28nm, and a newer 2023 generation instead of 2012. That makes it the less risky pick as game demands keep moving.

Which GPU is the better buy today?

Radeon Steam Deck 8CU makes the most sense today based on the pricing and value data we have for this matchup.

GeForce GTX 675MX vs Radeon Steam Deck 8CU Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

GeForce GTX 675MX

The GeForce GTX 675MX is manufactured by NVIDIA. It was released in October 1 2012. It features the Kepler architecture. The core clock speed is 600 MHz. It has 960 shading units. The thermal design power (TDP) is 100W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 2,951 points.

Radeon Steam Deck 8CU

The Radeon Steam Deck 8CU is manufactured by AMD. It was released in November 9 2023. It features the RDNA 2 architecture. The boost clock speed is 1900 MHz. It has 512 shading units. The thermal design power (TDP) is 30W. Manufactured using 6 nm process technology. G3D Mark benchmark score: 3,000 points.

⚡

Graphics Performance

The GeForce GTX 675MX scores 2,951 and the Radeon Steam Deck 8CU reaches 3,000 in the G3D Mark benchmark — just a 1.7% difference, making them near-identical in rasterization performance. The GeForce GTX 675MX is built on Kepler while the Radeon Steam Deck 8CU uses RDNA 2, both on 28 nm vs 6 nm. Shader units: 960 (GeForce GTX 675MX) vs 512 (Radeon Steam Deck 8CU).

Feature	GeForce GTX 675MX	Radeon Steam Deck 8CU
G3D Mark Score	2,951	3,000+2%
Architecture	Kepler	RDNA 2
Process Node	28 nm	6 nm
Shading Units	960+88%	512
L1 Cache	80 KB	512 KB+540%
L2 Cache	0.5 MB	1 MB+100%

✨

Advanced Features (DLSS/FSR)

The GeForce GTX 675MX gets NVIDIA DLSS, which still tends to look cleaner in motion. The Radeon Steam Deck 8CU leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

Feature	GeForce GTX 675MX	Radeon Steam Deck 8CU
Upscaling Tech	Upscaling support	FSR Upscaling / FSR 4
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	NVIDIA Reflex	AMD Anti-Lag

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Video Memory (VRAM)

The GeForce GTX 675MX has 4 GB of VRAM, while the Radeon Steam Deck 8CU carries 2 GB. GeForce GTX 675MX gives you 100% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 128-bit on the GeForce GTX 675MX and 64-bit on the Radeon Steam Deck 8CU. L2 Cache: 0.5 MB (GeForce GTX 675MX) vs 1 MB (Radeon Steam Deck 8CU) — the Radeon Steam Deck 8CU has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce GTX 675MX	Radeon Steam Deck 8CU
VRAM Capacity	4 GB+100%	2 GB
Memory Type	GDDR5	GDDR5
Bus Width	128-bit+100%	64-bit
L2 Cache	0.5 MB	1 MB+100%

🖥️

Display & API Support

DirectX support: 12 (11_0) (GeForce GTX 675MX) vs 12_0 (Radeon Steam Deck 8CU). Maximum simultaneous displays: 4 vs 0.

Feature	GeForce GTX 675MX	Radeon Steam Deck 8CU
DirectX	12 (11_0)	12_0
Max Displays	4	0

🎬

Media & Encoding

Hardware encoder: NVENC 1st Gen (GeForce GTX 675MX) vs VCN 3.0 (Radeon Steam Deck 8CU). Decoder: PureVideo HD VP5 vs VCN 3.0.

Feature	GeForce GTX 675MX	Radeon Steam Deck 8CU
Encoder	NVENC 1st Gen	VCN 3.0
Decoder	PureVideo HD VP5	VCN 3.0
Codecs	H.264,VC-1,MPEG-2,MPEG-4 ASP	—

🔌

Power & Dimensions

The GeForce GTX 675MX draws 100W versus the Radeon Steam Deck 8CU's 30W — a 107.7% difference. The Radeon Steam Deck 8CU is more power-efficient. Recommended PSU: 350W (GeForce GTX 675MX) vs 350W (Radeon Steam Deck 8CU). Power connectors: 1x 6-pin vs PCIe-powered.

Feature	GeForce GTX 675MX	Radeon Steam Deck 8CU
TDP	100W	30W-70%
Recommended PSU	350W	350W
Power Connector	1x 6-pin	PCIe-powered
Length	—	1mm
Slots	0	0
Temp (Load)	85°C	—
Perf/Watt	29.5	100.0+239%

💰

Value Analysis

The newer card here is Radeon Steam Deck 8CU (2023 vs 2012).

Feature	GeForce GTX 675MX	Radeon Steam Deck 8CU
MSRP	—	$0
Codename	GK104	RDNA 2 Sephiroth
Release	October 1 2012	November 9 2023
Ranking	#588	#480

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