Radeon R5 A255 vs HD 8450G

Primary details

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

Place in the ranking1121not rated
Place by popularitynot in top-100not in top-100
Power efficiency1.74no data
ArchitectureTeraScale 3 (2010−2013)GCN 3.0 (2014−2019)
GPU code nameScrapperTopaz
Market segmentDesktopDesktop
Release date23 May 2013 (11 years ago)2014 (10 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 cores192384
Core clock speed533 MHz925 MHz
Boost clock speed720 MHz940 MHz
Number of transistors1,303 million1,550 million
Manufacturing process technology32 nm28 nm
Power consumption (TDP)35 Wattno data
Texture fill rate8.64022.56
Floating-point processing power0.2765 TFLOPSno data
ROPs48
TMUs1224

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).

InterfaceIGPPCIe 3.0 x8
WidthIGPno data

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 typeSystem SharedGDDR5
Maximum RAM amountSystem Shared1 GB
Memory bus widthSystem Shared128 Bit
Memory clock speedSystem Shared4 GB/s
Memory bandwidthno data64 GB/s
Shared memory+-

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 outputsPortable Device Dependent

API compatibility

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

DirectX11.2 (11_0)12 (12_0)
Shader Model5.06.5
OpenGL4.44.6
OpenCL1.22.1
VulkanN/A1.2.170

Pros & cons summary


Chip lithography 32 nm 28 nm

R5 A255 has a 14.3% more advanced lithography process.

We couldn't decide between Radeon HD 8450G and Radeon R5 A255. We've got no test results to judge.


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 8450G
Radeon HD 8450G
AMD Radeon R5 A255
Radeon R5 A255

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.


4.3 18 votes

Rate Radeon HD 8450G on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

No user ratings yet.

Rate Radeon R5 A255 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.