Radeon HD 6970 X2 vs HD 7990

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Primary details

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

Place in the ranking362not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.51no data
Power efficiency2.64no data
ArchitectureGCN 1.0 (2011−2020)TeraScale 3 (2010−2013)
GPU code nameMaltaAntilles
Market segmentDesktopDesktop
Release date24 April 2013 (11 years ago)no data
Launch price (MSRP)$999 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 cores20481536
Core clock speed950 MHz880 MHz
Boost clock speed1000 MHzno data
Number of transistors4,313 million2,640 million
Manufacturing process technology28 nm40 nm
Power consumption (TDP)375 Watt375 Watt
Texture fill rate128.084.48
Floating-point processing power4.096 TFLOPSno data
ROPs3232
TMUs12896

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 x16PCIe 2.0 x16
Length307 mmno data
Width2-slot2-slot
Supplementary power connectors2x 8-pin3x 8-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 amount3 GB2 GB
Memory bus width384 Bit256 Bit
Memory clock speed1500 MHz5.5 GB/s
Memory bandwidth288.0 GB/s176.0 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 Connectors1x DVI, 4x mini-DisplayPort2x DVI, 1x HDMI 1.4a, 2x mini-DisplayPort 1.2
HDMI-+

API compatibility

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

DirectX12 (11_1)11.2 (11_0)
Shader Model5.15.0
OpenGL4.64.4
OpenCL1.21.2
Vulkan1.2.131N/A

Pros & cons summary


Maximum RAM amount 3 GB 2 GB
Chip lithography 28 nm 40 nm

HD 7990 has a 50% higher maximum VRAM amount, and a 42.9% more advanced lithography process.

We couldn't decide between Radeon HD 7990 and Radeon HD 6970 X2. 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 7990
Radeon HD 7990
AMD Radeon HD 6970 X2
Radeon HD 6970 X2

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Community ratings

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