GeForce 840A vs GeForce 840M

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 840A vs GeForce 840M 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 840A vs GeForce 840M: 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 840A

2014

Why buy it

✅Delivers 100+% more G3D Mark for each dollar spent, at 11.2 vs 0 G3D/$ ($100 MSRP vs Unknown MSRP).

Trade-offs

❌Lower average FPS than GeForce 840M across 34 tracked games in our benchmark data.
❌Less VRAM, with 512 MB vs 2 GB for high-resolution textures and newer games.
❌2014 hardware with 512 MB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.

GeForce 840M

2014

Why buy it

✅181.5% more average FPS across 34 tracked games in our benchmark data.
✅300% more VRAM for high-resolution textures and newer games (2 GB vs 512 MB).
✅More future proof: Maxwell (2014−2017) on 28nm with a newer platform for upcoming games.

Trade-offs

❌2014 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 11.2 G3D/$ (Unknown MSRP vs $100 MSRP).

Quick Answers

Which GPU is faster for gaming right now?

GeForce 840M is the faster gaming card right now. In our data, it leads by 181.5% in average FPS across 34 tracked games in our benchmark data. PassMark G3D leans toward GeForce 840A instead at 1,115 vs 1,100, so for this question the real-game FPS result matters more than the synthetic split.

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

GeForce 840A 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?

GeForce 840A makes the most sense today based on the pricing and value data we have for this matchup. GeForce 840M still makes more sense if max raw gaming performance matters more than value.

GeForce 840A vs GeForce 840M Technical Specifications

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

GeForce 840A

The GeForce 840A is manufactured by NVIDIA. It was released in March 17 2014. It features the Maxwell architecture. The core clock ranges from 1029 MHz to 1124 MHz. It has 384 shading units. The thermal design power (TDP) is 33W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,115 points.

GeForce 840M

The GeForce 840M is manufactured by NVIDIA. It was released in March 12 2014. It features the Maxwell architecture. The core clock ranges from 1029 MHz to 1124 MHz. It has 384 shading units. The thermal design power (TDP) is 33W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 1,100 points.

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Graphics Performance

The GeForce 840A scores 1,115 and the GeForce 840M reaches 1,100 in the G3D Mark benchmark — just a 1.4% difference, making them near-identical in rasterization performance. The GeForce 840A is built on Maxwell while the GeForce 840M uses Maxwell, both on a 28 nm process. Shader units: 384 (GeForce 840A) vs 384 (GeForce 840M). Raw compute: 0.8632 TFLOPS (GeForce 840A) vs 0.8632 TFLOPS (GeForce 840M). Boost clocks: 1124 MHz vs 1124 MHz.

Feature	GeForce 840A	GeForce 840M
G3D Mark Score	1,115+1%	1,100
Architecture	Maxwell	Maxwell
Process Node	28 nm	28 nm
Shading Units	384	384
Compute (TFLOPS)	0.8632 TFLOPS	0.8632 TFLOPS
Boost Clock	1124 MHz	1124 MHz
ROPs	8	8
TMUs	16	16
L1 Cache	192 KB	192 KB
L2 Cache	1 MB	1 MB

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Advanced Features (DLSS/FSR)

Feature	GeForce 840A	GeForce 840M
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 840A has 512 MB of VRAM, while the GeForce 840M carries 2 GB. GeForce 840M 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 840A and 128-bit on the GeForce 840M.

Feature	GeForce 840A	GeForce 840M
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	1 MB

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Display & API Support

DirectX support: 12 (11_0) (GeForce 840A) vs 11.0 (GeForce 840M). Vulkan: 1.1 vs 1.2. OpenGL: 4.5 vs 4.5. Maximum simultaneous displays: 3 vs 1.

Feature	GeForce 840A	GeForce 840M
DirectX	12 (11_0)+9%	11.0
Vulkan	1.1	1.2+9%
OpenGL	4.5	4.5
Max Displays	3+200%	1

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Media & Encoding

Hardware encoder: NVENC (Maxwell) (GeForce 840A) vs NVENC 2.0 (GeForce 840M). Decoder: NVDEC (Maxwell) vs PureVideo HD VP6. Supported codecs: H.264,VC-1,MPEG-2 (GeForce 840A) vs MPEG-2,H.264,VC-1,MPEG-4 ASP,H.265 (GeForce 840M).

Feature	GeForce 840A	GeForce 840M
Encoder	NVENC (Maxwell)	NVENC 2.0
Decoder	NVDEC (Maxwell)	PureVideo HD VP6
Codecs	H.264,VC-1,MPEG-2	MPEG-2,H.264,VC-1,MPEG-4 ASP,H.265

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Power & Dimensions

The GeForce 840A draws 33W versus the GeForce 840M's 33W — a 0% difference. The GeForce 840M is more power-efficient. Recommended PSU: 350W (GeForce 840A) vs 350W (GeForce 840M). Power connectors: Legacy vs Legacy. Typical load temperature: 75°C vs 75°C.