Radeon HD 6490M Mac Edition vs RX 460 1024SP

Primary details

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

Place in the rankingnot ratednot rated
Place by popularitynot in top-100not in top-100
ArchitectureGCN 4.0 (2016−2020)TeraScale 2 (2009−2015)
GPU code nameBaffinSeymour
Market segmentDesktopLaptop
Release date17 January 2017 (7 years ago)2 May 2011 (13 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 cores1024160
Core clock speed1090 MHz750 MHz
Boost clock speed1200 MHzno data
Number of transistors3,000 million370 million
Manufacturing process technology14 nm40 nm
Power consumption (TDP)75 Wattno data
Texture fill rate76.806.000
Floating-point processing power2.458 TFLOPS0.24 TFLOPS
ROPs164
TMUs648

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).

InterfacePCIe 3.0 x8PCIe 2.0 x16
Length170 mmno data
Width2-slotno data
Supplementary power connectorsNoneno 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 typeGDDR5GDDR5
Maximum RAM amount2 GB256 MB
Memory bus width128 Bit64 Bit
Memory clock speed1750 MHz794 MHz
Memory bandwidth112.0 GB/s25.41 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 Connectors1x DVI, 1x HDMI, 1x DisplayPortNo outputs
HDMI+-

API compatibility

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

DirectX12 (12_0)11.2 (11_0)
Shader Model6.45.0
OpenGL4.64.4
OpenCL2.01.2
Vulkan1.2.131N/A

Pros & cons summary


Recency 17 January 2017 2 May 2011
Maximum RAM amount 2 GB 256 MB
Chip lithography 14 nm 40 nm

RX 460 1024SP has an age advantage of 5 years, a 700% higher maximum VRAM amount, and a 185.7% more advanced lithography process.

We couldn't decide between Radeon RX 460 1024SP and Radeon HD 6490M Mac Edition. We've got no test results to judge.

Be aware that Radeon RX 460 1024SP is a desktop card while Radeon HD 6490M Mac Edition is a notebook 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 RX 460 1024SP
Radeon RX 460 1024SP
AMD Radeon HD 6490M Mac Edition
Radeon HD 6490M Mac Edition

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.


2.1 785 votes

Rate Radeon RX 460 1024SP on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

No user ratings yet.

Rate Radeon HD 6490M Mac Edition 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.