ATI Mobility Radeon HD 4870 vs ATI Mobility Radeon HD 4870 X2

ATI Mobility Radeon HD 4870

► remove

The ATI Mobilty Radeon HD 4870 from AMD is a high-end DirectX 10.1 notebook graphics card. Technically, it is based on the desktop HD 4850 and 4870 GPUs but with a lower clock rate to save energy. The HD 4870 is also equipped with GDDR5 RAM, similar to its desktop variations. The successor of the HD 4870 is the Mobility Radeon HD 5870 which supports DirectX 11.

The gaming performance of the ATI Mobility Radeon HD 4870 should be comparable to, but still a bit below, the desktop HD 4850. The high amount of shaders and the 256 bit bus allows the Mobility HD 4870 to run every DirectX 9 game in high resolutions and detail settings. Demanding DirectX 10 games, such as Crysis, can be played fluently with medium to high details. Compared to the GeForce GTX 280M, the Mobility HD 4870 delivers a similar level of performance in games.

The Mobility HD 4870 is based on the RV770 chip and features 800 stream processors (160 5-dimensional shader cores). These cores do the graphics work that would normally be done by the shader- and pixel pipelines of older GPUs. The stream processors are also called ALUs and are grouped in five-way VLIW units. Each of the five instructions of a VLIW bundle has to be independent from the others and therefore much of the performance of the HD 4870 depends on the optimization of the driver.

 

The Mobility Radeon HD 4870 includes Avivo HD, UVD2 and an onboard soundchip for 7.1 sound output over HDMI or DisplayPort. The UVD2 supports full bitstream decoding of H.264/MPEG-4 AVC and VC-1 streams. In addition to this, it also supports dual video stream decoding and Picture-in Picture mode for full compliancy of the current BD-Live standard. Simply put, the Avivo HD technology handles all video tasks and enables the GPU to decode HD videos.

AMD has published a current consumption of about 65 Watt for the Mobility HD 4870. Still, it is unclear if this value represents the chip alone or the entire MXM board including the memory (which we estimate would contribute about 5 Watts).

Compared to the desktop ATI Radeon HD 4870, the mobile 4870 features a slower core clock and should therefore perform more similarly to the desktop HD 4850 and 4830.

ATI Mobility Radeon HD 4870 X2

► remove ATI Mobility Radeon HD 4870 X2

Because of the high amount of shaders (2x800) the gaming performance of the Mobility Radeon HD 4870 X2 is very good and allows the gaming of all DirectX 9 games in high resolutions and details. Even demanding DirectX 10 games of 2008 (i.e., Crysis Warhead and Far Cry 2) can be played with high details. The GPU supports fast GDDR5 graphics RAM, but all laptops as of this writing are built with slower GDDR3 graphics memory (Alienware M17x, Asus).

The 4870 X2 also suffers from micro stuttering most noticeable around 30 fps, similar to all SLI and Crossfire setups. This occurs if both cards are in Alternate Frame Rendering (AFR) Mode since the time delay to display each sequential frame becomes irregular. See our dedicated micro stuttering article here for more information.

The Mobility HD 4870 x2 is based on two RV770 chips and features 2x800 stream processors (2x160 5-dimensional shader cores). These cores do the graphics work of the shader and pixel pipelines of older GPUs. The stream processors are also called ALUs and are grouped in five-way VLIW units. Each of the five instructions of a VLIW bundle has to be independent from the others and the performance therefore depends on the optimization of the driver.

The Mobility Radeon HD 4870 X2 includes Avivo HD, an onboard soundchip for 7.1 sound output over HDMI or DisplayPort and the 2nd generation UVD (Unified Video Decoder). UVD 2 supports full bitstream decoding of H.264/MPEG-4 AVC and VC-1 streams, dual video stream decoding and Picture-in Picture mode which makes the UVD full BD-Live compliant. To put simply, the Avivo HD technology handles all video tasks and enables the GPU to decode HD videos.

AMD published a power consumption of about 2x65 Watt for the HD 4870 X2. Still, it is unclear if this value represents the chip alone or the whole MXM board including the memory, which we estimate would add about 2x5 Watts.

Compared to the desktop ATI Radeon HD 4870 X2, the mobile 4870 X2 features a slower core clock and should therefore perform a bit slower than even the desktop HD 4850 X2.

ATI Mobility Radeon HD 4870ATI Mobility Radeon HD 4870 X2
ManufacturerATIATI
Mobility Radeon HD 4000 Series
Mobility Radeon HD 4870 X2 1600 @ 550 MHz256 Bit @ 888 MHz
Mobility Radeon HD 4870 800 @ 550 MHz256 Bit @ 888 MHz
Mobility Radeon HD 4870 X2 1600 @ 550 MHz256 Bit @ 888 MHz
Mobility Radeon HD 4870 800 @ 550 MHz256 Bit @ 888 MHz
CodenameM98-XTM98-XT
ArchitectureTerascale 1Terascale 1
800 - 1600 -
Core550 MHz550 MHz
Memory888 MHz888 MHz
Bus256 Bit256 Bit
MemoryGDDR5GDDR3, GDDR5
Max. Memory1024 MB2048 MB
nono
DirectXDirectX 10.1, 4.1DirectX 10.1, 4.1
Transistors956 Million1912 Million
Technology55 nm55 nm
Features

OpenGL 2.0, PCI-E 2.0 x16, Powerplay, DisplayPort support up to 2560x1600, HDMI support up to 1920x1080 (both with 7.1 AC3 Audio), 1x Dual-Link/Single-Link DVI, 1x Single-Link DVI Support (all display ports have to be supported by the laptop manufacturer)

OpenGL 2.0, PCI-E 2.0 x16, Powerplay, DisplayPort support up to 2560x1600, HDMI support up to 1920x1080 (both with 7.1 AC3 Audio), 1x Dual-Link/Single-Link DVI, 1x Single-Link DVI Support (all display ports have to be supported by the laptop manufacturer)
Size
Introduced09.01.2009 09.01.2009
Manufacturerhttp://ati.amd.com/products/mobilityrade...http://ati.amd.com/products/mobilityrade...

3DMark Vantage
P Result 1280x1024 + ATI Mobility Radeon HD 4870
P Result 1280x1024 + ATI Mobility Radeon HD 4870 X2
P GPU no PhysX 1280x1024 + ATI Mobility Radeon HD 4870
P GPU no PhysX 1280x1024 + ATI Mobility Radeon HD 4870 X2
3DMark 05 - Standard 1024x768
min: 14594     avg: 16349     median: 16348.5 (31%)     max: 18103 Points
min: 14329     avg: 18522     median: 19550 (37%)     max: 21688 Points
3DMark 06 Standard 1280x1024 + ATI Mobility Radeon HD 4870
Standard 1280x1024 + ATI Mobility Radeon HD 4870 X2
Windows 7 Experience Index - Gaming graphics
7.2 points (91%)
7.2 points (91%)
Windows 7 Experience Index - Graphics
7.2 points (91%)
7.2 points (91%)
Cinebench R10 Shading 32Bit + ATI Mobility Radeon HD 4870
Shading 32Bit + ATI Mobility Radeon HD 4870 X2

Average Benchmarks ATI Mobility Radeon HD 4870 → 100%

Average Benchmarks ATI Mobility Radeon HD 4870 X2 → 115%

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

med. 1024x768
100%
Mobility Radeon HD 4870:
46.4  fps
181%
Mobility Radeon HD 4870 X2:
84.2  fps
ultra 1920x1080
100%
Mobility Radeon HD 4870:
30.8  fps
194%
Mobility Radeon HD 4870 X2:
59.6  fps
Mobility Radeon HD 4870:
»
Mobility Radeon HD 4870 X2:
»
Risen

Risen

2009
med. 1024x768
100%
Mobility Radeon HD 4870:
50  fps
120%
Mobility Radeon HD 4870 X2:
60.2  fps
ultra 1920x1080
100%
Mobility Radeon HD 4870:
28.3  fps
112%
Mobility Radeon HD 4870 X2:
31.6  fps
Mobility Radeon HD 4870:
»
Mobility Radeon HD 4870 X2:
»
Need for Speed Shift

Need for Speed Shift

2009
med. 1024x768
100%
Mobility Radeon HD 4870:
51.8  fps
100%
Mobility Radeon HD 4870 X2:
52  fps
ultra 1920x1080
100%
Mobility Radeon HD 4870:
30.7  fps
81%
Mobility Radeon HD 4870 X2:
25  fps
Mobility Radeon HD 4870:
»
Mobility Radeon HD 4870 X2:
»
Colin McRae: DIRT 2

Colin McRae: DIRT 2

2009
med. 1024x768
100%
Mobility Radeon HD 4870:
65.2  fps
107%
Mobility Radeon HD 4870 X2:
69.7  fps
ultra 1920x1080
100%
Mobility Radeon HD 4870:
29.5  fps
171%
Mobility Radeon HD 4870 X2:
50.4  fps
Mobility Radeon HD 4870:
»
Mobility Radeon HD 4870 X2:
»
Anno 1404

Anno 1404

2009
ultra 1280x1024
100%
Mobility Radeon HD 4870:
58.8  fps
153%
Mobility Radeon HD 4870 X2:
89.8  fps
Mobility Radeon HD 4870:
»
Mobility Radeon HD 4870 X2:
»
Sims 3

Sims 3

2009
low 800x600
Mobility Radeon HD 4870 X2:
251.7  fps
med. 1024x768
Mobility Radeon HD 4870 X2:
118.6  fps
high 1280x1024
Mobility Radeon HD 4870 X2:
77.4  fps
Mobility Radeon HD 4870 X2:
»
F.E.A.R. 2

F.E.A.R. 2

2009
high 1280x1024
100%
Mobility Radeon HD 4870:
88.8  fps
119%
Mobility Radeon HD 4870 X2:
105.3  fps
ultra 1920x1080
100%
Mobility Radeon HD 4870:
49.3  fps
188%
Mobility Radeon HD 4870 X2:
92.5  fps
Mobility Radeon HD 4870:
»
Mobility Radeon HD 4870 X2:
»
GTA IV - Grand Theft Auto

GTA IV - Grand Theft Auto

2008
low 800x600
Mobility Radeon HD 4870 X2:
48.6  fps
med. 1024x768
Mobility Radeon HD 4870 X2:
32.3  fps
Mobility Radeon HD 4870 X2:
»
Far Cry 2

Far Cry 2

2008
low 640x480
100%
Mobility Radeon HD 4870:
76  fps
117%
Mobility Radeon HD 4870 X2:
88.7  fps
high 1024x768
Mobility Radeon HD 4870 X2:
40.5  fps
Mobility Radeon HD 4870:
»
Mobility Radeon HD 4870 X2:
»
Racedriver: GRID

Racedriver: GRID

2008
low 800x600
Mobility Radeon HD 4870 X2:
84.6  fps
med. 1024x768
Mobility Radeon HD 4870 X2:
56.3  fps
high 1280x1024
Mobility Radeon HD 4870 X2:
51.3  fps
Mobility Radeon HD 4870 X2:
»
Call of Duty 4 - Modern Warfare

Call of Duty 4 - Modern Warfare

2007
low 800x600
Mobility Radeon HD 4870 X2:
156.5  fps
med. 1024x768
Mobility Radeon HD 4870 X2:
106.2  fps
high 1280x1024
Mobility Radeon HD 4870 X2:
99.8  fps
Mobility Radeon HD 4870 X2:
»
Supreme Commander - FA Bench

Supreme Commander - FA Bench

2007
med. 1024x768
Mobility Radeon HD 4870 X2:
52.5  fps
high 1024x768
100%
Mobility Radeon HD 4870:
50  fps
103%
Mobility Radeon HD 4870 X2:
51.4  fps
Mobility Radeon HD 4870:
»
Mobility Radeon HD 4870 X2:
»
Crysis - GPU Benchmark

Crysis - GPU Benchmark

2007
high 1024x768
100%
Mobility Radeon HD 4870:
50  fps
105%
Mobility Radeon HD 4870 X2:
52.4  fps
ultra 1920x1080
100%
Mobility Radeon HD 4870:
14.5  fps
184%
Mobility Radeon HD 4870 X2:
26.7  fps
Mobility Radeon HD 4870:
»
Mobility Radeon HD 4870 X2:
»
Crysis - CPU Benchmark

Crysis - CPU Benchmark

2007
high 1024x768
100%
Mobility Radeon HD 4870:
43.9  fps
119%
Mobility Radeon HD 4870 X2:
52.2  fps
ultra 1920x1080
100%
Mobility Radeon HD 4870:
13.5  fps
189%
Mobility Radeon HD 4870 X2:
25.5  fps
Mobility Radeon HD 4870:
»
Mobility Radeon HD 4870 X2:
»
Half Life 2 - Lost Coast Benchmark

Half Life 2 - Lost Coast Benchmark

2005
high 1024x768
100%
Mobility Radeon HD 4870:
165  fps
Mobility Radeon HD 4870:
»
Quake 3 Arena - Timedemo

Quake 3 Arena - Timedemo

1999
high 1024x768
100%
Mobility Radeon HD 4870:
582  fps
Mobility Radeon HD 4870:
»

Average Gaming ATI Mobility Radeon HD 4870 → 100%

Average Gaming ATI Mobility Radeon HD 4870 X2 → 138%

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), 2020, 2019
v1.11
Please share our article, every link counts!
> Notebook / Laptop Reviews and News > Benchmarks / Tech > Graphics Card Comparison - Head 2 Head
Redaktion, 2017-09- 8 (Update: 2017-09-11)