RTX A400 vs Radeon HD 6990M Rebrand

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Primary details

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

Place in the rankingnot rated469
Place by popularitynot in top-100not in top-100
Power efficiencyno data13.33
ArchitectureTeraScale 2 (2009−2015)Ampere (2020−2024)
GPU code nameBroadwayGA107
Market segmentLaptopWorkstation
Release date12 July 2011 (13 years ago)16 April 2024 (less than a 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 cores800768
Core clock speed800 MHz727 MHz
Boost clock speedno data1762 MHz
Number of transistors1,040 million8,700 million
Manufacturing process technology40 nm8 nm
Power consumption (TDP)100 Watt50 Watt
Texture fill rate32.0042.29
Floating-point processing power1.28 TFLOPS2.706 TFLOPS
ROPs1616
TMUs4024
Tensor Coresno data24
Ray Tracing Coresno data6

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).

InterfaceMXM-B (3.0)PCIe 4.0 x8
Lengthno data163 mm
Widthno data1-slot
Supplementary power connectorsno dataNone

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 typeGDDR5GDDR6
Maximum RAM amount1 GB4 GB
Memory bus width128 Bit64 Bit
Memory clock speed1100 MHz1500 MHz
Memory bandwidth70.4 GB/s96 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 ConnectorsNo outputs4x mini-DisplayPort 1.4a

API compatibility

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

DirectX11.2 (11_0)12 Ultimate (12_2)
Shader Model5.06.7
OpenGL4.44.6
OpenCL1.23.0
VulkanN/A1.3
CUDA-8.6

Pros & cons summary


Recency 12 July 2011 16 April 2024
Maximum RAM amount 1 GB 4 GB
Chip lithography 40 nm 8 nm
Power consumption (TDP) 100 Watt 50 Watt

RTX A400 has an age advantage of 12 years, a 300% higher maximum VRAM amount, a 400% more advanced lithography process, and 100% lower power consumption.

We couldn't decide between Radeon HD 6990M Rebrand and RTX A400. We've got no test results to judge.

Be aware that Radeon HD 6990M Rebrand is a notebook card while RTX A400 is a workstation 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 6990M Rebrand
Radeon HD 6990M Rebrand
NVIDIA RTX A400
RTX A400

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Community ratings

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Questions & comments

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