GeForce 920M vs Mobility Radeon HD 4870

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 920M vs Mobility Radeon HD 4870 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 920M vs Mobility Radeon HD 4870: 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 920M

2016

Why buy it

✅Draws 16W instead of 30W, a 14W reduction.
✅More future proof: Maxwell (2014−2017) on 28nm with a newer platform for upcoming games.

Trade-offs

❌Less VRAM, with 512 MB vs 1 GB for high-resolution textures and newer games.
❌2016 hardware with 512 MB 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 2.4 G3D/$ (Unknown MSRP vs $299 MSRP).

Mobility Radeon HD 4870

2009

Why buy it

✅Delivers 100+% more G3D Mark for each dollar spent, at 2.4 vs 0 G3D/$ ($299 MSRP vs Unknown MSRP).
✅100% more VRAM for high-resolution textures and newer games (1 GB vs 512 MB).

Trade-offs

❌2009 hardware with 1 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌87.5% higher power demand at 30W vs 16W.

Quick Answers

Which GPU is faster for gaming right now?

Mobility Radeon HD 4870 is the faster gaming card right now based on the synthetic data we have. It leads by 0.4% in PassMark G3D (720 vs 717), which is the best performance signal available in this matchup.

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

GeForce 920M is the safer long-term pick for 2026 and beyond. The case is simple: a 28nm process instead of 55nm and a newer 2016 generation instead of 2009. That makes it the less risky pick as game demands keep moving.

Which GPU is the better buy today?

Mobility Radeon HD 4870 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, Mobility Radeon HD 4870 is the easier value choice. If you care more about 1080p and some 1440p headroom, GeForce 920M has the stronger long-term case.

GeForce 920M vs Mobility Radeon HD 4870 Technical Specifications

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

GeForce 920M

The GeForce 920M is manufactured by NVIDIA. It was released in March 25 2016. It features the Maxwell architecture. The core clock ranges from 965 MHz to 993 MHz. It has 256 shading units. The thermal design power (TDP) is 16W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 717 points.

Mobility Radeon HD 4870

The Mobility Radeon HD 4870 is manufactured by AMD. It was released in January 9 2009. It features the TeraScale architecture. The core clock speed is 550 MHz. It has 800 shading units. The thermal design power (TDP) is 30W. Manufactured using 55 nm process technology. G3D Mark benchmark score: 720 points.

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Graphics Performance

The GeForce 920M scores 717 and the Mobility Radeon HD 4870 reaches 720 in the G3D Mark benchmark — just a 0.4% difference, making them near-identical in rasterization performance. The GeForce 920M is built on Maxwell while the Mobility Radeon HD 4870 uses TeraScale, both on 28 nm vs 55 nm. Shader units: 256 (GeForce 920M) vs 800 (Mobility Radeon HD 4870). Raw compute: 0.5084 TFLOPS (GeForce 920M) vs 0.88 TFLOPS (Mobility Radeon HD 4870).

Feature	GeForce 920M	Mobility Radeon HD 4870
G3D Mark Score	717	720
Architecture	Maxwell	TeraScale
Process Node	28 nm	55 nm
Shading Units	256	800+213%
Compute (TFLOPS)	0.5084 TFLOPS	0.88 TFLOPS+73%
ROPs	8	16+100%
TMUs	24	40+67%
L1 Cache	128 KB	160 KB+25%
L2 Cache	1 MB+300%	0.25 MB

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Advanced Features (DLSS/FSR)

The GeForce 920M gets NVIDIA DLSS, which still tends to look cleaner in motion. The Mobility Radeon HD 4870 leans on FSR, which is flexible and widely supported, but usually a bit rougher at the same settings.

Feature	GeForce 920M	Mobility Radeon HD 4870
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 920M has 512 MB of VRAM, while the Mobility Radeon HD 4870 carries 1 GB. Mobility Radeon HD 4870 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 920M and 64-bit on the Mobility Radeon HD 4870. L2 Cache: 1 MB (GeForce 920M) vs 0.25 MB (Mobility Radeon HD 4870) — the GeForce 920M has significantly larger on-die cache to reduce VRAM reliance.

Feature	GeForce 920M	Mobility Radeon HD 4870
VRAM Capacity	0.5 GB	1 GB+100%
Memory Type	GDDR5	GDDR5
Memory Bandwidth	Unknown	Unknown
Bus Width	128-bit+100%	64-bit
L2 Cache	1 MB+300%	0.25 MB

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Display & API Support

DirectX support: 11.0 (GeForce 920M) vs 10.1 (Mobility Radeon HD 4870). OpenGL: 4.5 vs 3.3. Maximum simultaneous displays: 1 vs 2.

Feature	GeForce 920M	Mobility Radeon HD 4870
DirectX	11.0+9%	10.1
OpenGL	4.5+36%	3.3
Max Displays	1	2+100%

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Media & Encoding

Decoder: PureVideo HD VP5 vs UVD 2.0. Supported codecs: MPEG-2,H.264,VC-1,MPEG-4 ASP (GeForce 920M) vs H.264,VC-1,MPEG-2 (Mobility Radeon HD 4870).

Feature	GeForce 920M	Mobility Radeon HD 4870
Encoder	No	—
Decoder	PureVideo HD VP5	UVD 2.0
Codecs	MPEG-2,H.264,VC-1,MPEG-4 ASP	H.264,VC-1,MPEG-2

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Power & Dimensions

The GeForce 920M draws 16W versus the Mobility Radeon HD 4870's 30W — a 60.9% difference. The GeForce 920M is more power-efficient. Recommended PSU: 350W (GeForce 920M) vs 350W (Mobility Radeon HD 4870). Power connectors: Legacy vs PCIe-powered.

Feature	GeForce 920M	Mobility Radeon HD 4870
TDP	16W-47%	30W
Recommended PSU	350W	350W
Power Connector	Legacy	PCIe-powered
Length	0mm	—
Height	0mm	—
Slots	0	0
Temp (Load)	70°C	—
Perf/Watt	44.8+87%	24.0

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Value Analysis

The newer card here is GeForce 920M (2016 vs 2009).

Feature	GeForce 920M	Mobility Radeon HD 4870
MSRP	—	$299
Codename	GM108	M98
Release	March 25 2016	January 9 2009
Ranking	#864	#927

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