Radeon RX 455 OEM vs HD 6790

Primary details

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

Place in the ranking684not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation0.86no data
Power efficiency1.92no data
ArchitectureTeraScale 2 (2009−2015)GCN 2.0 (2013−2017)
GPU code nameBartsTobago
Market segmentDesktopDesktop
Release date4 April 2011 (13 years ago)30 June 2016 (8 years ago)
Launch price (MSRP)$149 no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

no data

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 cores800768
Core clock speed840 MHz1050 MHz
Number of transistors1,700 million2,080 million
Manufacturing process technology40 nm28 nm
Power consumption (TDP)150 Watt100 Watt
Texture fill rate33.6050.40
Floating-point processing power1.344 TFLOPS1.613 TFLOPS
ROPs1616
TMUs4048

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 3.0 x16
Length198 mm165 mm
Width2-slot1-slot
Supplementary power connectors2x 6-pin1x 6-pin

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 amount1 GB2 GB
Memory bus width256 Bit128 Bit
Memory clock speed1050 MHz1625 MHz
Memory bandwidth134.4 GB/s104.0 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 Connectors2x DVI, 1x HDMI, 1x DisplayPort1x DVI, 1x HDMI, 1x DisplayPort
HDMI++

API compatibility

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

DirectX11.2 (11_0)12 (12_0)
Shader Model5.06.3
OpenGL4.44.6
OpenCL1.22.0
VulkanN/A1.2.131

Pros & cons summary


Recency 4 April 2011 30 June 2016
Maximum RAM amount 1 GB 2 GB
Chip lithography 40 nm 28 nm
Power consumption (TDP) 150 Watt 100 Watt

RX 455 OEM has an age advantage of 5 years, a 100% higher maximum VRAM amount, a 42.9% more advanced lithography process, and 50% lower power consumption.

We couldn't decide between Radeon HD 6790 and Radeon RX 455 OEM. 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.

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AMD Radeon HD 6790
Radeon HD 6790
AMD Radeon RX 455 OEM
Radeon RX 455 OEM

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Community ratings

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


4 153 votes

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2.3 3 votes

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Questions & comments

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