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ATI Mobility Radeon HD 4830

The AMD ATI Mobility Radeon HD 4830 is a slower clocked Mobility HD 4860 and based on the 40nm RV740 core. Therefore, it is similar to the desktop HD 4700 series. Because of the 40nm production process, the power consumption should be similar to the HD 4670 (according to rumors).

Instead of GDDR5 memory of the HD 4860, the 4830 can be only equipped with slow DDR3 or faster GDDR3. Therefore, the 128 Bit memory bus becomes a bottle neck and the performance is clearly degraded.

The gaming performance of the ATI Mobility Radeon HD4830 is sufficient for demanding games of 2009 in medium - high details. Our gaming benchmarks (see below) showed that a high preset in Crysis or NFS Shift resulted in barely playable framerates around 25 fps. Less demanding games, are playable in high resolution and detail settings.

The Mobility HD 4830 is based on the RV740 chip and features 640 stream processors (128 5-dimensional shader cores). These cores do the graphic 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 therefore the performance depends on the optimization of the driver.

The Mobility Radeon HD 4830 includes the Avivo HD called video technology including an onboard soundchip for 7.1 sound output over HDMI or DisplayPort and the 2nd generation UVD (Unified Video Decoder). This UVD 2 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 which makes the UVD full BD-Live compliant. Simplified, the Avivo HD technology handles all video tasks and enables the GPU to decode HD videos.

The HD4830 was replaced by the Mobility Radeon HD 5830, which features a higher shader count (800) and DirectX 11 capable shaders. Therefore, the gaming performance of the 5830 is better, but also the power consumption should be higher (same 40nm process, although more mature).

Compared to the desktop cards, the Mobility Radeon is similar to the ATI Radeon HD 4730. Still, the desktop 4730 offers a noticeable higher performance due to GDDR5 usage and higher clock speeds.


Mobility Radeon HD 4800 Series

Mobility Radeon HD 4860 compare 640 @ 0.65 GHz128 Bit @ 1000 MHz
Mobility Radeon HD 4850 compare 800 @ 0.5 GHz256 Bit @ 850 MHz
Mobility Radeon HD 4830 640 @ 0.55 GHz128 Bit @ 700 MHz
ArchitectureTerascale 1
Pipelines640 - unified
Core Speed550 MHz
Memory Speed700 MHz
Memory Bus Width128 Bit
Memory TypeGDDR3, DDR3
Shared Memoryno
APIDirectX 10.1, Shader 4.1
Transistor Count826 Million
technology40 nm
FeaturesPowerplay, CrossFireX support, 
Notebook Sizelarge
Date of Announcement03.03.2009
Information512 - 768 GFlops Computing Power
Link to Manufacturer


3DMark Vantage
3DM Vant. Perf. total +
3DM Vant. Perf. GPU no PhysX +
3DMark 06 3DMark 06 - Standard 1280x1024 +
3DMark 06 - Standard 1280x768 +
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.

Need for Speed Shift

Need for Speed Shift

low 800x600
64.8  fps    + Compare
med. 1024x768
36.7  fps    + Compare
high 1366x768
24.6  fps    + Compare
» With all tested laptops playable in detail settings med..
Anno 1404

Anno 1404

F.E.A.R. 2

F.E.A.R. 2

low 800x600
168.1  fps    + Compare
med. 1024x768
88.1  fps    + Compare
» With all tested laptops playable in detail settings med..
Call of Duty 4 - Modern Warfare

Call of Duty 4 - Modern Warfare

low 800x600
169.7  fps    + Compare
med. 1024x768
61.5  fps    + Compare
» With all tested laptops playable in detail settings med..
Supreme Commander - FA Bench

Supreme Commander - FA Bench

med. 1024x768
43.1  fps    + Compare
high 1024x768
35.7  fps    + Compare
» With all tested laptops playable in detail settings high.
Crysis - GPU Benchmark

Crysis - GPU Benchmark

low 1024x768
99.4  fps    + Compare
med. 1024x768
59.2  fps    + Compare
high 1024x768
32.3  fps    + Compare
» With all tested laptops playable in detail settings med..
Crysis - CPU Benchmark

Crysis - CPU Benchmark

low 1024x768
106.9  fps    + Compare
med. 1024x768
54.4  fps    + Compare
high 1024x768
27.5  fps    + Compare
» With all tested laptops playable in detail settings med..
Need for Speed Shift64.836.7224.6
Anno 1404132.3
F.E.A.R. 2168.188.1
Call of Duty 4 - Modern Warfare169.761.5
Supreme Commander - FA Bench43.0535.73
Crysis - GPU Benchmark99.459.232.31
Crysis - CPU Benchmark106.954.427.53
< 30 fps
< 60 fps
< 120 fps
≥ 120 fps



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

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Notebook reviews with ATI Mobility Radeon HD 4830 graphics card


Review HP Envy 15 Notebook

They are around us. With the new Envy notebook HP finally dares to enter the premium multimedia segment, which is only sparsely populated by some brands so far....
Intel Core i7-720QM | ATI Mobility Radeon HD 4830 | 15.60" | 2.4 kg

HP Envy 15-1060ea: Intel Core i7-720QM, 15.60", 2.4 kg
  External Review » HP Envy 15-1060ea

HP Envy 15-1050nr: Intel Core i7-720QM, 15.60", 2.6 kg
  External Review » HP Envy 15-1050nr

HP Envy 15: Intel Core i7-720QM, 15.60", 2.4 kg
  External Review » HP Envy 15

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Playable games for each graphics card and their average FPS results.

Class 1

Class 2

Radeon PRO W6600M *

Class 3

Radeon Radeon Steam Deck 8CU
UHD Graphics 32EUs
UHD Graphics 750

Class 4

Class 5

* Approximate position of the graphics adapter