GeForce GT 820M vs Mobility Radeon HD 3870

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.

Performance Comparison

About G3D Mark

G3D Mark Score

542

G3D Mark Score

548

Performance Difference

Mobility Radeon HD 3870 is 1.1% faster than GeForce GT 820M

VRAM & Game Performance

VRAM (Video RAM) is dedicated memory on your graphics card that stores textures, frame buffers, and game assets. Higher VRAM allows for sharper textures at high resolutions (1440p/4K) and prevents stuttering in modern AAA games. 8GB is minimum for 1080p, 12GB+ recommended for 1440p, and 16GB+ for 4K gaming.

GeForce GT 820MN/A

016GB32GB

VRAM data unavailable

Mobility Radeon HD 3870512 MB

016GB32GB

1080pLimited

low4%

medium4%

high4%

ultra4%

1440pLimited

low4%

medium4%

high4%

ultra4%

4KLimited

low4%

medium4%

high4%

ultra4%

📊 Performance Analysis

1 GB VRAM · 548 G3D Mark (entry-level)

1080pLimited. Older/lighter games only.

1440pNot recommended. Use 1080p.

4KNot viable. Use lower resolution or heavy upscaling.

⚡Ray Tracing: RT not recommended. Keep disabled for playable FPS.

🚀Upscaling: Performance mode: +50-70% FPS, noticeable quality loss.

Benchmarks & Performance Comparison

In this GPU comparison, Mobility Radeon HD 3870 performs 1.1% better in benchmarks. Below you'll find detailed performance analysis, gaming benchmarks, power consumption data, and specifications to help you decide between GeForce GT 820M and Mobility Radeon HD 3870.

Both graphics cards are popular choices for gaming. When comparing GPUs, consider VRAM capacity, ray tracing performance, power requirements, and price-to-performance ratio for your target gaming resolution (1080p, 1440p, or 4K).

Technical Specifications

Detailed hardware specifications for GeForce GT 820M and Mobility Radeon HD 3870

GeForce GT 820M

The GeForce GT 820M is manufactured by NVIDIA. It was released in October 7 2014. It features the Maxwell 2.0 architecture. The core clock ranges from 1038 MHz to 1127 MHz. It has 1536 shading units. The thermal design power (TDP) is 100W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 542 points.

Technical Specifications

ROPs:64

TMUs:96

Vram:null

L1 Cache:576 kB

L2 Cache:2 MB

Core Clock:1038 MHz

Boost Clock:1127 MHz

Shading Units:1536

Transistor Count:5,200 million

Texture Fill Rate:51.84

Manufacturing Process:28 nm

Power Consumption (TDP):unknown

Floating Point Performance:1.659 TFLOPS

General Information

Codename:GM204

Architecture:Maxwell 2.0 (2014−2019)

Release Date:October 7 2014

Performance Ranking Position:344

Mobility Radeon HD 3870

The Mobility Radeon HD 3870 is manufactured by AMD. It was released in January 7 2010. It features the TeraScale 2 architecture. Core clock: 700 MHz. It has 800 shading units. The thermal design power (TDP) is 50W. Manufactured using 40 nm process technology. G3D Mark benchmark score: 548 points.