ATI Radeon HD 4720 vs HD 6550A

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking914not rated
Place by popularitynot in top-100not in top-100
Power efficiency3.62no data
ArchitectureTeraScale 2 (2009−2015)TeraScale (2005−2013)
GPU code namePinewoodRV730
Market segmentLaptopDesktop
Release date7 February 2011 (13 years ago)11 December 2011 (12 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores480320
Core clock speed550 MHz600 MHz
Number of transistors627 million514 million
Manufacturing process technology40 nm55 nm
Power consumption (TDP)35 Watt55 Watt
Texture fill rate13.2019.20
Floating-point processing power0.528 TFLOPS0.384 TFLOPS
ROPs88
TMUs2432

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

InterfaceMXM-A (3.0)PCIe 2.0 x16
Lengthno data193 mm
Widthno data1-slot

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory typeGDDR3GDDR3
Maximum RAM amount2 GB1 GB
Memory bus width128 Bit128 Bit
Memory clock speed800 MHz667 MHz
Memory bandwidth25.6 GB/s21.34 GB/s

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display ConnectorsNo outputs2x DVI, 1x S-Video

API compatibility

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX11.2 (11_0)10.1 (10_1)
Shader Model5.04.1
OpenGL4.43.3
OpenCL1.21.1
VulkanN/AN/A

Pros & cons summary


Recency 7 February 2011 11 December 2011
Maximum RAM amount 2 GB 1 GB
Chip lithography 40 nm 55 nm
Power consumption (TDP) 35 Watt 55 Watt

HD 6550A has a 100% higher maximum VRAM amount, a 37.5% more advanced lithography process, and 57.1% lower power consumption.

ATI HD 4720, on the other hand, has an age advantage of 10 months.

We couldn't decide between Radeon HD 6550A and Radeon HD 4720. We've got no test results to judge.

Be aware that Radeon HD 6550A is a notebook card while Radeon HD 4720 is a desktop one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

Vote for your favorite

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite graphics card.


AMD Radeon HD 6550A
Radeon HD 6550A
ATI Radeon HD 4720
Radeon HD 4720

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


1 1 vote

Rate Radeon HD 6550A on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
4.7 3 votes

Rate Radeon HD 4720 on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about this comparison, agree or disagree with our judgements, or report an error or mismatch.