ATI Mobility Radeon HD 3870 vs ATI Mobility Radeon HD 3450

ATI Mobility Radeon HD 3870

► remove 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.

ATI Mobility Radeon HD 3450

► remove 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.

ATI Mobility Radeon HD 3870ATI Mobility Radeon HD 3450
ManufacturerATIATI
Mobility Radeon HD 3000 Series
Mobility Radeon HD 3870 320 @ 660 MHz256 Bit @ 850 MHz
Mobility Radeon HD 3470 Hybrid X2 compare 80
Mobility Radeon HD 3470 compare 40 @ 680 MHz64 Bit @ 800 MHz
Mobility Radeon HD 3450 40 @ 500 MHz64 Bit @ 700 MHz
Mobility Radeon HD 3870 320 @ 660 MHz256 Bit @ 850 MHz
Mobility Radeon HD 3470 Hybrid X2 compare 80
Mobility Radeon HD 3470 compare 40 @ 680 MHz64 Bit @ 800 MHz
Mobility Radeon HD 3450 40 @ 500 MHz64 Bit @ 700 MHz
CodenameM88-XTM82
ArchitectureRV6xxRV6xx
Cores320 - unified40 - unified
Core660 MHz500 MHz
Memory850 MHz700 MHz
Bus256 Bit64 Bit
MemoryGDDR3DDR2/GDDR3
Shared Memorynono
DirectXDirectX 10.1, 4.1DirectX 10.1, 4.1
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
Size2/3
Introduced01.03.2008 08.01.2007
55nm, Display Port with external transmitter
Manufacturerhttp://ati.amd.com/products/mobilityrade...http://ati.amd.com/products/mobilityrade...

3DMark Vantage
P Result 1280x1024 + ATI Mobility Radeon HD 3870
P Result 1280x1024 + ATI Mobility Radeon HD 3450
P GPU no PhysX 1280x1024 + ATI Mobility Radeon HD 3870
P GPU no PhysX 1280x1024 + ATI Mobility Radeon HD 3450
3DMark 2001SE - Standard 1024x768
21439 Points (22%)
min: 10800     avg: 12534     median: 12859 (13%)     max: 13943 Points
3DMark 03 - Standard 1024x768
28981 Points (15%)
min: 4070     avg: 4342     median: 4093 (2%)     max: 4863 Points
3DMark 05 - Standard 1024x768
min: 12769     avg: 12885     median: 12884.5 (24%)     max: 13000 Points
min: 3566     avg: 3922     median: 4000 (8%)     max: 4199 Points
3DMark 06 + ATI Mobility Radeon HD 3870
+ ATI Mobility Radeon HD 3450
Cinebench R10 Shading 32Bit + ATI Mobility Radeon HD 3870
Shading 32Bit + ATI Mobility Radeon HD 3450

Average Benchmarks ATI Mobility Radeon HD 3870 → 100%

Average Benchmarks ATI Mobility Radeon HD 3450 → 32%

-
-
* Smaller numbers mean a higher performance
1 This benchmark is not used for the average calculation

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 ATI Mobility Radeon HD 3450 → 46%

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Redaktion, 2017-09- 8 (Update: 2017-09-11)