Radeon 780M vs HD 6390

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Primary details

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

Place in the rankingnot rated302
Place by popularitynot in top-10049
Power efficiencyno data83.69
ArchitectureTeraScale 2 (2009−2015)RDNA 3.0 (2022−2024)
GPU code nameRedwoodPhoenix
Market segmentDesktopLaptop
Release date4 July 2011 (13 years ago)4 January 2023 (1 year 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 cores320768
Core clock speed550 MHz800 MHz
Boost clock speedno data2700 MHz
Number of transistors627 million25,390 million
Manufacturing process technology40 nm4 nm
Power consumption (TDP)39 Watt15 Watt
Texture fill rate8.800129.6
Floating-point processing power0.352 TFLOPS8.294 TFLOPS
ROPs832
TMUs1648
Ray Tracing Coresno data12

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 2.0 x16PCIe 4.0 x8
Length165 mmno data
Width1-slotno data
Supplementary power connectorsNoneNone

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 typeDDR2System Shared
Maximum RAM amount1 GBSystem Shared
Memory bus width128 BitSystem Shared
Memory clock speed500 MHzSystem Shared
Memory bandwidth16 GB/sno data
Shared memoryno data+

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 VGAPortable Device Dependent
HDMI+-

API compatibility

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

DirectX11.2 (11_0)12 Ultimate (12_2)
Shader Model5.06.8
OpenGL4.44.6
OpenCL1.22.1
VulkanN/A1.3

Pros & cons summary


Recency 4 July 2011 4 January 2023
Chip lithography 40 nm 4 nm
Power consumption (TDP) 39 Watt 15 Watt

Radeon 780M has an age advantage of 11 years, a 900% more advanced lithography process, and 160% lower power consumption.

We couldn't decide between Radeon HD 6390 and Radeon 780M. We've got no test results to judge.

Be aware that Radeon HD 6390 is a desktop card while Radeon 780M is a notebook one.


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

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AMD Radeon HD 6390
Radeon HD 6390
AMD Radeon 780M
Radeon 780M

Comparisons with similar GPUs

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Community ratings

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


2.8 19 votes

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4.2 1549 votes

Rate Radeon 780M on a scale of 1 to 5:

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Questions & comments

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