ATI Mobility Radeon HD 3470 vs ATI Mobility Radeon HD 3870
ATI Mobility Radeon HD 3470
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The AMD ATI Mobility Radeon HD 3470 is a faster clocked HD 3450 and therefore also produced in 55nm and with DirectX 10.1 support (the enhancements over the HD 2400 series).
The 40 unified shaders count like 8 shaders on Nvidia cards (5-dimensional versus 1-dimensional).
The Avivo HD video support enables the gpu to decode HD videos (MPEG-2, H.264, VC-1).
The performance of the card can be suited for modest casual gamers. Demanding games like Crysis run only with very low details and resolution.
Compared to the desktop HD 3470, the Mobility version has a lower core clock speed and should perform a bit better than the desktop HD 3450.
ATI Mobility Radeon HD 3870
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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.
ATI Mobility Radeon HD 3470 | ATI Mobility Radeon HD 3870 | |||||||||||||||||||||||||
Mobility Radeon HD 3000 Series |
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Codename | M82-XT | M88-XT | ||||||||||||||||||||||||
Architecture | RV6xx | RV6xx | ||||||||||||||||||||||||
Pipelines | 40 - unified | 320 - unified | ||||||||||||||||||||||||
Core Speed | 680 MHz | 660 MHz | ||||||||||||||||||||||||
Memory Speed | 800 MHz | 850 MHz | ||||||||||||||||||||||||
Memory Bus Width | 64 Bit | 256 Bit | ||||||||||||||||||||||||
Memory Type | DDR2/GDDR3 | GDDR3 | ||||||||||||||||||||||||
Shared Memory | no | no | ||||||||||||||||||||||||
API | DirectX 10.1, Shader 4.1 | DirectX 10.1, Shader 4.1 | ||||||||||||||||||||||||
Power Consumption | 12 Watt | 55 Watt | ||||||||||||||||||||||||
Transistors | 181 Million | 666 Million | ||||||||||||||||||||||||
technology | 55 nm | 55 nm | ||||||||||||||||||||||||
Features | Display-Port support | Avivo HD, OpenGL 2.0, PowerPlay 7.0, PCI Express 2.0 x16, 512-bit internal ring bus | ||||||||||||||||||||||||
Date of Announcement | 08.01.2007 | 01.03.2008 | ||||||||||||||||||||||||
Link to Manufacturer Page | ati.amd.com | ati.amd.com | ||||||||||||||||||||||||
Notebook Size | large | |||||||||||||||||||||||||
Information | 55nm, Display Port with external transmitter |
Benchmarks
3DM Vant. Perf. total + ATI Mobility Radeon HD 3870
Average Benchmarks ATI Mobility Radeon HD 3470 → 100% n=6
Average Benchmarks ATI Mobility Radeon HD 3870 → 388% n=6

* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation
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.
Average Gaming ATI Mobility Radeon HD 3470 → 100%
Average Gaming 30-70 fps → 100%
Average Gaming ATI Mobility Radeon HD 3870 → 419%
ATI Mobility Radeon HD 3870 | low | med. | high | ultra | QHD | 4K |
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Supreme Commander - FA Bench | 30.8 | |||||
Crysis - GPU Benchmark | 26 | |||||
Crysis - CPU Benchmark | 25 | |||||
Call of Juarez Benchmark | 33 | |||||
The Elder Scrolls IV - Oblivion | 64 | |||||
Half Life 2 - Lost Coast Benchmark | 98 | |||||
F.E.A.R. | 189 | 91 | ||||
Doom 3 | 125 | 117 | ||||
< 30 fps < 60 fps < 120 fps ≥ 120 fps | 2 | | 2 2 3 | 1 | | |
ATI Mobility Radeon HD 3470 | low | med. | high | ultra | QHD | 4K |
---|---|---|---|---|---|---|
Crysis - GPU Benchmark | 25.5 | 11.39 | 6.32 | |||
Crysis - CPU Benchmark | 22.19 | 9.67 | 5.24 | |||
F.E.A.R. | 220 | 47 | 13 | |||
Quake 3 Arena - Timedemo | 240 | |||||
< 30 fps < 60 fps < 120 fps ≥ 120 fps | 2 1 | 2 1 | 3 1 | | | |
For more games that might be playable and a list of all games and graphics cards visit our Gaming List