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ATI Mobility Radeon HD 3870 vs ATI Mobility Radeon 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 3450

► remove from comparison ATI Mobility Radeon HD 3450

Successor of the HD 2400 produced in 55nm (therefore with a faster clockspeed) and with DirectX 10.1 support.

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 3450, the Mobility version has a lower core clock speed and is therefore a bit slower.

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ATI Mobility Radeon HD 3870ATI Mobility Radeon HD 3450
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 40 @ 0.5 GHz64 Bit @ 700 MHz
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 40 @ 0.5 GHz64 Bit @ 700 MHz
CodenameM88-XTM82
ArchitectureRV6xxRV6xx
Pipelines320 - unified40 - unified
Core Speed660 MHz500 MHz
Memory Speed850 MHz700 MHz
Memory Bus Width256 Bit64 Bit
Memory TypeGDDR3DDR2/GDDR3
Shared Memorynono
APIDirectX 10.1, Shader 4.1DirectX 10.1, Shader 4.1
Power Consumption55 Watt12 Watt
Transistors666 Million181 Million
technology55 nm55 nm
Features
Avivo HD, OpenGL 2.0, PowerPlay 7.0, PCI Express 2.0 x16, 512-bit internal ring bus
Display-Port support, Avivo HD, Powerplay
Notebook Sizelarge
Date of Announcement01.03.2008 08.01.2007
Information55nm, Display Port with external transmitter
Link to Manufacturer Pageati.amd.comati.amd.com

Benchmarks

3DMark Vantage
3DM Vant. Perf. total + ATI Mobility Radeon HD 3870
3DMark Vantage - 3DM Vant. Perf. total
3458 Points (1%)
3DM Vant. Perf. total + ATI Mobility Radeon HD 3450
min: 200     avg: 306.5     median: 306.5 (0%)     max: 413 Points
3DM Vant. Perf. GPU no PhysX + ATI Mobility Radeon HD 3870
3DMark Vantage - 3DM Vant. Perf. GPU no PhysX
3463 Points (2%)
3DM Vant. Perf. GPU no PhysX + ATI Mobility Radeon HD 3450
min: 150     avg: 234     median: 234 (0%)     max: 318 Points
3DMark 2001SE - 3DMark 2001 - Standard
21439 Points (22%)
min: 10800     avg: 12534     median: 12859 (13%)     max: 13943 Points
3DMark 03 - 3DMark 03 - Standard
28981 Points (15%)
min: 4070     avg: 4342     median: 4093 (2%)     max: 4863 Points
3DMark 05 - 3DMark 05 - Standard
min: 12769     avg: 12885     median: 12884.5 (14%)     max: 13000 Points
min: 3566     avg: 3922     median: 4000 (4%)     max: 4199 Points
3DMark 06 3DMark 06 - Score Unknown Settings + ATI Mobility Radeon HD 3870
3DMark 06
min: 8000     avg: 8600     median: 8600 (11%)     max: 9200 Points
3DMark 06 - Score Unknown Settings + ATI Mobility Radeon HD 3450
2000 Points (3%)
3DMark 06 - Standard 1280x1024 + ATI Mobility Radeon HD 3870
3DMark 06
min: 8064     avg: 8636     median: 8635.5 (11%)     max: 9207 Points
3DMark 06 - Standard 1280x800 + ATI Mobility Radeon HD 3450
3DMark 06
min: 1790     avg: 1908     median: 1823 (2%)     max: 2112 Points
Cinebench R10 Cinebench R10 Shading (32bit) + ATI Mobility Radeon HD 3870
Cinebench R10 - Cinebench R10 Shading (32bit)
3290 Points (2%)
Cinebench R10 Shading (32bit) + ATI Mobility Radeon HD 3450
min: 2536     avg: 2595     median: 2595 (2%)     max: 2654 Points

Average Benchmarks ATI Mobility Radeon HD 3870 → 100% n=7

Average Benchmarks ATI Mobility Radeon HD 3450 → 32% n=7

- Range of benchmark values for this graphics card
- Average benchmark values for this graphics card
* 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.

Supreme Commander - FA Bench

Supreme Commander - FA Bench

2007
high 1024x768
100%
Mobility Radeon HD 3870:
30.8  fps
Crysis - GPU Benchmark

Crysis - GPU Benchmark

2007
low 1024x768
Mobility Radeon HD 3450:
22.8 25.5 ~ 24 fps
med. 1024x768
Mobility Radeon HD 3450:
8.9 9.6 ~ 9 fps
high 1024x768
100%
Mobility Radeon HD 3870:
26  fps
19%
Mobility Radeon HD 3450:
4.5 5.6 ~ 5 fps
Crysis - CPU Benchmark

Crysis - CPU Benchmark

2007
low 1024x768
Mobility Radeon HD 3450:
19.6 21.6 ~ 21 fps
med. 1024x768
Mobility Radeon HD 3450:
7.8 7.8 ~ 8 fps
high 1024x768
100%
Mobility Radeon HD 3870:
25  fps
16%
Mobility Radeon HD 3450:
4 4.5 ~ 4 fps
World in Conflict - Benchmark

World in Conflict - Benchmark

2007
med. 1024x768
Mobility Radeon HD 3450:
14  fps
high 1024x768
Mobility Radeon HD 3450:
4  fps
Call of Juarez Benchmark

Call of Juarez Benchmark

2006
high 1024x768
100%
Mobility Radeon HD 3870:
33  fps
The Elder Scrolls IV - Oblivion

The Elder Scrolls IV - Oblivion

2006
high 1280x800
100%
Mobility Radeon HD 3870:
64  fps
Half Life 2 - Lost Coast Benchmark

Half Life 2 - Lost Coast Benchmark

2005
high 1024x768
100%
Mobility Radeon HD 3870:
98  fps
F.E.A.R.

F.E.A.R.

2005
low 640x480
100%
Mobility Radeon HD 3870:
189  fps
136%
Mobility Radeon HD 3450:
232 281 ~ 257 fps
med. 800x600
Mobility Radeon HD 3450:
27 47 ~ 37 fps
high 1024x768
100%
Mobility Radeon HD 3870:
91  fps
13%
Mobility Radeon HD 3450:
11 12 ~ 12 fps
Doom 3

Doom 3

2004
low 640x480
100%
Mobility Radeon HD 3870:
125  fps
60%
Mobility Radeon HD 3450:
75.1  fps
med. 640x480
Mobility Radeon HD 3450:
74.2  fps
high 800x600
Mobility Radeon HD 3450:
51.1  fps
ultra 1024x768
100%
Mobility Radeon HD 3870:
117  fps
29%
Mobility Radeon HD 3450:
33.9  fps
Quake 3 Arena - Timedemo

Quake 3 Arena - Timedemo

1999
high 1024x768
Mobility Radeon HD 3450:
255  fps

Average Gaming ATI Mobility Radeon HD 3870 → 100%

Average Gaming 30-70 fps → 100%

Average Gaming ATI Mobility Radeon HD 3450 → 46%

Average Gaming 30-70 fps → 29%

ATI Mobility Radeon HD 3870lowmed.highultraQHD4K
Supreme Commander - FA Bench30.8
Crysis - GPU Benchmark26
Crysis - CPU Benchmark25
Call of Juarez Benchmark33
The Elder Scrolls IV - Oblivion64
Half Life 2 - Lost Coast Benchmark98
F.E.A.R.18991
Doom 3125117
< 30 fps
< 60 fps
< 120 fps
≥ 120 fps


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ATI Mobility Radeon HD 3450lowmed.highultraQHD4K
Crysis - GPU Benchmark2495
Crysis - CPU Benchmark2184
World in Conflict - Benchmark144
F.E.A.R.2573712
Doom 375.174.251.133.9
Quake 3 Arena - Timedemo255
< 30 fps
< 60 fps
< 120 fps
≥ 120 fps		2

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

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Redaktion, 2017-09- 8 (Update: 2023-07- 1)