Mobility Radeon HD 4830 vs Radeon HD 6990

In this comparison between Mobility Radeon HD 4830 and Radeon HD 6990 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Mobility Radeon HD 4830 will be the best choice, for others Radeon HD 6990 will be their preference. Study the comparison tables below and make your choice.

Mobility Radeon HD 4830 is a Laptop Graphics Card

Note: Mobility Radeon HD 4830 is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Mobility Radeon HD 4830 here:

Main Specs

  Mobility Radeon HD 4830 Radeon HD 6990
Power consumption (TDP) 375 Watt
Interface PCIe 2.0 x16 PCIe 2.0 x16
Supplementary power connectors 2x 8-pin
Memory type GDDR3, DDR3 GDDR5
Maximum RAM amount 1 GB 2 GB
Display Connectors No outputs 1x DVI, 4x mini-DisplayPort
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  • Both video cards are using PCIe 2.0 x16 interface connection to a motherboard.
  • Radeon HD 6990 has 1 GB more memory, than Mobility Radeon HD 4830.
  • Mobility Radeon HD 4830 is used in Laptops, and Radeon HD 6990 - in Desktops.
  • Mobility Radeon HD 4830 is build with Terascale 1 architecture, and Radeon HD 6990 - with TeraScale 3.
  • Core clock speed of Radeon HD 6990 is 280 MHz higher, than Mobility Radeon HD 4830.
  • Mobility Radeon HD 4830 and Radeon HD 6990 are manufactured by 40 nm process technology.
  • Memory clock speed of Radeon HD 6990 is 4300 MHz higher, than Mobility Radeon HD 4830.

Game benchmarks

high / 1080p 0−1 14−16
ultra / 1080p 0−1 9−10
QHD / 1440p 0−1 3−4
low / 720p 10−11 30−35
medium / 1080p 1−2 18−20
The average gaming FPS of Radeon HD 6990 in Assassin's Creed Odyssey is 316% more, than Mobility Radeon HD 4830.

Full Specs

  Mobility Radeon HD 4830 Radeon HD 6990
Architecture Terascale 1 TeraScale 3
Code name M97 Antilles
Type Laptop Desktop
Release date 3 March 2009 8 March 2011
Pipelines 640 1536
Core clock speed 550 MHz 830 MHz
Transistor count 826 million 2,640 million
Manufacturing process technology 40 nm 40 nm
Texture fill rate 17.60 79.68
Floating-point performance 704.0 gflops 2x 2,549.8 gflops
Length 295 mm
Memory bus width 128 Bit 256 Bit
Memory clock speed 700 MHz 5000 MHz
Memory bandwidth 44.8 GB/s 160.0 GB/s
Shared memory -
DirectX 10.1 (10_1) 11.2 (11_0)
Shader Model 4.1 5.0
OpenGL 3.3 4.4
OpenCL 1.1 1.2
Vulkan N/A N/A
Bitcoin / BTC (SHA256) 265 Mh/s
Laptop size large
Ethereum / ETH (DaggerHashimoto) 24 Mh/s
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