GeForce GTX 660M vs Radeon R9 M365X

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 R9 M365X 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 R9 M365X: 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

✅Draws 50W instead of 75W, a 25W reduction.

Trade-offs

❌Lower average FPS than Radeon R9 M365X across 50 tracked games in our benchmark data.
❌Less VRAM, with 2 GB vs 4 GB for high-resolution textures and newer games.
❌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 5.9 G3D/$ (Unknown MSRP vs $250 MSRP).

Radeon R9 M365X

2015

Why buy it

✅32.3% more average FPS across 50 tracked games in our benchmark data.
✅Delivers 100+% more G3D Mark for each dollar spent, at 5.9 vs 0 G3D/$ ($250 MSRP vs Unknown MSRP).
✅100% more VRAM for high-resolution textures and newer games (4 GB vs 2 GB).

Trade-offs

❌2015 hardware with 4 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌50% higher power demand at 75W vs 50W.

Quick Answers

Which GPU is faster for gaming right now?

Radeon R9 M365X is the faster gaming card right now. In our data, it leads by 32.3% in average FPS across 50 tracked games in our benchmark data and by 2.1% in PassMark G3D (1,482 vs 1,452), so the answer here is pretty clean.

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

GeForce GTX 660M is the safer long-term pick for 2026 and beyond because it comes out ahead on the available hardware-headroom signals for this matchup.

Which GPU is the better buy today?

Radeon R9 M365X makes the most sense today based on the pricing and value data we have for this matchup. If you are mainly targeting 1080p and some 1440p, Radeon R9 M365X is the easier value choice. If you care more about 1080p and some 1440p headroom, GeForce GTX 660M has the stronger long-term case.

GeForce GTX 660M vs Radeon R9 M365X 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 R9 M365X

The Radeon R9 M365X is manufactured by AMD. It was released in May 5 2015. It features the GCN 1.0 architecture. The core clock ranges from 900 MHz to 925 MHz. It has 640 shading units. The thermal design power (TDP) is 75W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,482 points.

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Graphics Performance

The GeForce GTX 660M scores 1,452 and the Radeon R9 M365X reaches 1,482 in the G3D Mark benchmark — just a 2.1% difference, making them near-identical in rasterization performance. The GeForce GTX 660M is built on Kepler while the Radeon R9 M365X uses GCN 1.0, both on a 28 nm process. Shader units: 384 (GeForce GTX 660M) vs 640 (Radeon R9 M365X). Raw compute: 0.7296 TFLOPS (GeForce GTX 660M) vs 1.184 TFLOPS (Radeon R9 M365X). Boost clocks: 950 MHz vs 925 MHz.

Feature	GeForce GTX 660M	Radeon R9 M365X
G3D Mark Score	1,452	1,482+2%
Architecture	Kepler	GCN 1.0
Process Node	28 nm	28 nm
Shading Units	384	640+67%
Compute (TFLOPS)	0.7296 TFLOPS	1.184 TFLOPS+62%
Boost Clock	950 MHz+3%	925 MHz
ROPs	16	16
TMUs	32	40+25%
L1 Cache	32 KB	160 KB+400%
L2 Cache	256 KB	256 KB

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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 R9 M365X leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

Feature	GeForce GTX 660M	Radeon R9 M365X
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 R9 M365X carries 4 GB. Radeon R9 M365X 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 660M and 128-bit on the Radeon R9 M365X.

Feature	GeForce GTX 660M	Radeon R9 M365X
VRAM Capacity	2 GB	4 GB+100%
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit	128-bit
L2 Cache	256 KB	256 KB

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Power & Dimensions

The GeForce GTX 660M draws 50W versus the Radeon R9 M365X's 75W — a 40% difference. The GeForce GTX 660M is more power-efficient. Recommended PSU: 350W (GeForce GTX 660M) vs 350W (Radeon R9 M365X). Power connectors: 1x 6-pin vs Mobile.

Feature	GeForce GTX 660M	Radeon R9 M365X
TDP	50W-33%	75W
Recommended PSU	350W	350W
Power Connector	1x 6-pin	Mobile
Slots	0	—
Temp (Load)	60°C	—
Perf/Watt	29.0+46%	19.8

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Value Analysis

The newer card here is Radeon R9 M365X (2015 vs 2012).

Feature	GeForce GTX 660M	Radeon R9 M365X
MSRP	—	$250
Codename	GK107	Tropo
Release	March 22 2012	May 5 2015
Ranking	#774	#769

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