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ATI Mobility Radeon HD 3870

ATI Mobility Radeon HD 3870

The AMD ATI Mobility Radeon HD 3870 is a higher clocked Mobilty Radeon HD 3850 wich is also manufactured in 55 nm and features DirectX 10.1 support. The chip is compareable to the desktop HD 3850 and optimized for less power consumption.

The performance of the graphics card is similar to the 8800M GTS and should therefore be sufficient for DirectX 9 games in medium to high details (see games list beyond).

The RV670 chip has 64 5-dimensional unified shaders with 16 ROPs, 16 TMUs, and 32 TAUs.

The Avivo HD video engine helps the cpu in decoding HD videos (MPEG-2, H.264, VC-1). The HD 3870 houses the UVD+ (Unified Video Decoder) that is capable of decoding MPEG-2, H.265/AVC, and VC-1 nearly fully. The UVD2 in the HD 4000 generation is capable of full bitstream decoding and two video streams can be decoded at once (which UVD+ can not).

Compared to desktop graphics cards, the HD 3870 is similar to the Radeon HD 3850 (nealry similar clock speeds, same core).

The power consumption of the HD 3800 series lies between 35-55 Watt.

Mobility Radeon HD 3000 Series

Mobility Radeon HD 3870 320 @ 0.66 GHz256 Bit @ 850 MHz
Mobility Radeon HD 3470 Hybrid X2 compare 80
Mobility Radeon HD 3470 compare 40 @ 0.68 GHz64 Bit @ 800 MHz
Mobility Radeon HD 3450 compare 40 @ 0.5 GHz64 Bit @ 700 MHz
Pipelines320 - unified
Core Speed660 MHz
Memory Speed850 MHz
Memory Bus Width256 Bit
Memory TypeGDDR3
Shared Memoryno
APIDirectX 10.1, Shader 4.1
Power Consumption55 Watt
Transistor Count666 Million
technology55 nm
Avivo HD, OpenGL 2.0, PowerPlay 7.0, PCI Express 2.0 x16, 512-bit internal ring bus
Notebook Sizelarge
Date of Announcement01.03.2008
Information55nm, Display Port with external transmitter
Link to Manufacturer Page


3DMark Vantage
3DM Vant. Perf. total +
3DM Vant. Perf. GPU no PhysX +
3DMark 06 3DMark 06 - Score Unknown Settings +
3DMark 06 - Standard 1280x1024 +
Cinebench R10 Cinebench R10 Shading (32bit) +
- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* Smaller numbers mean a higher performance

Game Benchmarks

The following benchmarks stem from our benchmarks of review laptops. The performance depends on the used graphics memory, clock rate, processor, system settings, drivers, and operating systems. So the results don't have to be representative for all laptops with this GPU. For detailed information on the benchmark results, click on the fps number.

The Elder Scrolls IV - Oblivion

The Elder Scrolls IV - Oblivion



low 640x480
189  fps    + Compare
high 1024x768
91  fps    + Compare
» With all tested laptops playable in detail settings high.
Doom 3

Doom 3

low 640x480
125  fps    + Compare
ultra 1024x768
117  fps    + Compare
» With all tested laptops playable in detail settings ultra.

For more games that might be playable and a list of all games and graphics cards visit our Gaming List

Add one or more devices and compare

In the following list you can select (and also search for) devices that should be added to the comparison. You can select more than one device.

restrict list:

show all (including archived), 2023, 2022
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» Comparison of GPUs
Detailed list of all laptop GPUs sorted by class and performance.

» Benchmark List
Sort and restrict laptop GPUs based on performance in synthetic benchmarks.

» Notebook Gaming List
Playable games for each graphics card and their average FPS results.

Class 1

Class 2

Radeon PRO W6600M *

Class 3

UHD Graphics 750
UHD Graphics Xe 24EUs *

Class 4

Class 5

* Approximate position of the graphics adapter

> Notebook / Laptop Reviews and News > Benchmarks / Tech > Comparison of Laptop Graphics Cards > ATI Mobility Radeon HD 3870
Klaus Hinum (Update: 2016-01-26)