GeForce GTX 660M vs Radeon 550X

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 660M vs Radeon 550X 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 660M vs Radeon 550X: 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 660M

2012

Why buy it

✅300% more VRAM for high-resolution textures and newer games (2 GB vs 512 MB).

Trade-offs

❌Lower average FPS than Radeon 550X across 50 tracked games in our benchmark data.
❌2012 hardware with 2 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌Lower G3D Mark per dollar, at 0 vs 13.5 G3D/$ (Unknown MSRP vs $109 MSRP).

Radeon 550X

2019

Why buy it

✅56.3% more average FPS across 50 tracked games in our benchmark data.
✅Delivers 100+% more G3D Mark for each dollar spent, at 13.5 vs 0 G3D/$ ($109 MSRP vs Unknown MSRP).
✅GeForce GTX 660M is already obsolete for modern gaming, so Radeon 550X is the less risky modern option long term.

Trade-offs

❌Less VRAM, with 512 MB vs 2 GB for high-resolution textures and newer games.
❌2019 hardware with 512 MB of VRAM already sits in legacy territory for modern games.

Quick Answers

Which GPU is faster for gaming right now?

Radeon 550X is the faster gaming card right now. In our data, it leads by 56.3% in average FPS across 50 tracked games in our benchmark data and by 1.6% in PassMark G3D (1,475 vs 1,452), so the answer here is pretty clean.

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

Radeon 550X 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 14nm process instead of 28nm, and a newer 2019 generation instead of 2012. That makes it the less risky pick as game demands keep moving.

Which GPU is the better buy today?

Radeon 550X makes the most sense today based on the pricing and value data we have for this matchup.

GeForce GTX 660M vs Radeon 550X Technical Specifications

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

GeForce GTX 660M

The GeForce GTX 660M is manufactured by NVIDIA. It was released in March 22 2012. It features the Kepler architecture. The core clock ranges from 835 MHz to 950 MHz. It has 384 shading units. The thermal design power (TDP) is 50W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,452 points.

Radeon 550X

The Radeon 550X is manufactured by AMD. It was released in March 27 2019. It features the GCN 4.0 architecture. The core clock ranges from 1082 MHz to 1218 MHz. It has 512 shading units. The thermal design power (TDP) is 50W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 1,475 points.

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Graphics Performance

The GeForce GTX 660M scores 1,452 and the Radeon 550X reaches 1,475 in the G3D Mark benchmark — just a 1.6% difference, making them near-identical in rasterization performance. The GeForce GTX 660M is built on Kepler while the Radeon 550X uses GCN 4.0, both on 28 nm vs 14 nm. Shader units: 384 (GeForce GTX 660M) vs 512 (Radeon 550X). Raw compute: 0.7296 TFLOPS (GeForce GTX 660M) vs 1.247 TFLOPS (Radeon 550X). Boost clocks: 950 MHz vs 1218 MHz.

Feature	GeForce GTX 660M	Radeon 550X
G3D Mark Score	1,452	1,475+2%
Architecture	Kepler	GCN 4.0
Process Node	28 nm	14 nm
Shading Units	384	512+33%
Compute (TFLOPS)	0.7296 TFLOPS	1.247 TFLOPS+71%
Boost Clock	950 MHz	1218 MHz+28%
ROPs	16	16
TMUs	32	32
L1 Cache	32 KB	128 KB+300%
L2 Cache	256 KB	512 KB+100%

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Advanced Features (DLSS/FSR)

The GeForce GTX 660M gets NVIDIA DLSS, which still tends to look cleaner in motion. The Radeon 550X leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

Feature	GeForce GTX 660M	Radeon 550X
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 660M has 2 GB of VRAM, while the Radeon 550X carries 512 MB. GeForce GTX 660M gives you 300% 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 660M and 64-bit on the Radeon 550X. L2 Cache: 256 KB (GeForce GTX 660M) vs 512 KB (Radeon 550X) — the Radeon 550X has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce GTX 660M	Radeon 550X
VRAM Capacity	2 GB+300%	0.5 GB
Memory Type	GDDR5	GDDR5
Bus Width	128-bit+100%	64-bit
L2 Cache	256 KB	512 KB+100%

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Power & Dimensions

The GeForce GTX 660M draws 50W versus the Radeon 550X's 50W — a 0% difference. The Radeon 550X is more power-efficient. Recommended PSU: 350W (GeForce GTX 660M) vs 350W (Radeon 550X). Power connectors: 1x 6-pin vs None.

Feature	GeForce GTX 660M	Radeon 550X
TDP	50W	50W
Recommended PSU	350W	350W
Power Connector	1x 6-pin	None
Slots	0	—
Temp (Load)	60°C	—
Perf/Watt	29.0	29.5+2%

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Value Analysis

The newer card here is Radeon 550X (2019 vs 2012).

Feature	GeForce GTX 660M	Radeon 550X
MSRP	—	$109
Codename	GK107	Lexa
Release	March 22 2012	March 27 2019
Ranking	#774	#772

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