GeForce 845M vs GeForce GTX 660M

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 845M vs GeForce GTX 660M 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 845M vs GeForce GTX 660M: 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 845M

2015

Why buy it

✅65.9% more average FPS across 50 tracked games in our benchmark data.
✅Draws 33W instead of 50W, a 17W reduction.

Trade-offs

❌Less VRAM, with 512 MB vs 2 GB for high-resolution textures and newer games.
❌2015 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

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 GeForce 845M 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.
❌51.5% higher power demand at 50W vs 33W.

Quick Answers

Which GPU is faster for gaming right now?

GeForce 845M is the faster gaming card right now. In our data, it leads by 65.9% in average FPS across 50 tracked games in our benchmark data and by 2.4% in PassMark G3D (1,487 vs 1,452), so the answer here is pretty clean.

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

GeForce 845M is the safer long-term pick for 2026 and beyond. The case is simple: a newer 2015 generation instead of 2012. That makes it the less risky pick as game demands keep moving.

Which GPU is the better buy today?

GeForce 845M makes the most sense today based on the pricing and value data we have for this matchup.

GeForce 845M vs GeForce GTX 660M Technical Specifications

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

GeForce 845M

The GeForce 845M is manufactured by NVIDIA. It was released in August 26 2015. It features the Maxwell architecture. The core clock ranges from 1071 MHz to 1176 MHz. It has 384 shading units. The thermal design power (TDP) is 33W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,487 points.

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.

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Graphics Performance

The GeForce 845M scores 1,487 and the GeForce GTX 660M reaches 1,452 in the G3D Mark benchmark — just a 2.4% difference, making them near-identical in rasterization performance. The GeForce 845M is built on Maxwell while the GeForce GTX 660M uses Kepler, both on a 28 nm process. Shader units: 384 (GeForce 845M) vs 384 (GeForce GTX 660M). Raw compute: 0.9032 TFLOPS (GeForce 845M) vs 0.7296 TFLOPS (GeForce GTX 660M). Boost clocks: 1176 MHz vs 950 MHz.

Feature	GeForce 845M	GeForce GTX 660M
G3D Mark Score	1,487+2%	1,452
Architecture	Maxwell	Kepler
Process Node	28 nm	28 nm
Shading Units	384	384
Compute (TFLOPS)	0.9032 TFLOPS+24%	0.7296 TFLOPS
Boost Clock	1176 MHz+24%	950 MHz
ROPs	16	16
TMUs	32	32
L1 Cache	192 KB+500%	32 KB
L2 Cache	1 MB+300%	0.25 MB

✨

Advanced Features (DLSS/FSR)

Feature	GeForce 845M	GeForce GTX 660M
Upscaling Tech	Upscaling support	Upscaling support
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	NVIDIA Reflex	NVIDIA Reflex

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Video Memory (VRAM)

The GeForce 845M has 512 MB of VRAM, while the GeForce GTX 660M carries 2 GB. 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 845M and 128-bit on the GeForce GTX 660M. L2 Cache: 1 MB (GeForce 845M) vs 0.25 MB (GeForce GTX 660M) — the GeForce 845M has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce 845M	GeForce GTX 660M
VRAM Capacity	0.5 GB	2 GB+300%
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit	128-bit
L2 Cache	1 MB+300%	0.25 MB

🖥️

Display & API Support

DirectX support: 12 (11_0) (GeForce 845M) vs 12 (11_0) (GeForce GTX 660M). Vulkan: 1.3 vs 1.2. OpenGL: 4.6 vs 4.5. Maximum simultaneous displays: 3 vs 4.

Feature	GeForce 845M	GeForce GTX 660M
DirectX	12 (11_0)	12 (11_0)
Vulkan	1.3+8%	1.2
OpenGL	4.6+2%	4.5
Max Displays	3	4+33%

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Media & Encoding

Hardware encoder: 4th Gen NVENC (Maxwell) (GeForce 845M) vs NVENC 1st Gen (GeForce GTX 660M). Decoder: PureVideo HD VP6 vs PureVideo HD VP5. Supported codecs: H.264,HEVC (GeForce 845M) vs H.264,VC-1,MPEG-2,MPEG-4 ASP (GeForce GTX 660M).

Feature	GeForce 845M	GeForce GTX 660M
Encoder	4th Gen NVENC (Maxwell)	NVENC 1st Gen
Decoder	PureVideo HD VP6	PureVideo HD VP5
Codecs	H.264,HEVC	H.264,VC-1,MPEG-2,MPEG-4 ASP

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Power & Dimensions

The GeForce 845M draws 33W versus the GeForce GTX 660M's 50W — a 41% difference. The GeForce 845M is more power-efficient. Recommended PSU: 350W (GeForce 845M) vs 350W (GeForce GTX 660M). Power connectors: Legacy vs 1x 6-pin. Typical load temperature: 85°C vs 60°C.