RTX A400 vs Radeon HD 6870 X2

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Primary details

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

Place in the rankingnot rated417
Place by popularitynot in top-100not in top-100
Power efficiencyno data15.58
ArchitectureTeraScale 2 (2009−2015)Ampere (2020−2024)
GPU code nameBartsGA107
Market segmentDesktopWorkstation
Release date8 July 2011 (13 years ago)16 April 2024 (less than a year ago)
Launch price (MSRP)$520 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 cores1120768
Core clock speed900 MHz727 MHz
Boost clock speedno data1762 MHz
Number of transistors1,700 million8,700 million
Manufacturing process technology40 nm8 nm
Power consumption (TDP)300 Watt50 Watt
Texture fill rate50.4042.29
Floating-point processing power2.016 TFLOPS2.706 TFLOPS
ROPs3216
TMUs5624
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).

InterfacePCIe 2.0 x16PCIe 4.0 x8
Length304 mm163 mm
Width2-slot1-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 width256 Bit64 Bit
Memory clock speed1050 MHz1500 MHz
Memory bandwidth134.4 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 Connectors2x DVI, 1x HDMI, 2x mini-DisplayPort4x mini-DisplayPort 1.4a
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 Model5.06.7
OpenGL4.44.6
OpenCL1.23.0
VulkanN/A1.3
CUDA-8.6

Pros & cons summary


Recency 8 July 2011 16 April 2024
Maximum RAM amount 1 GB 4 GB
Chip lithography 40 nm 8 nm
Power consumption (TDP) 300 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 500% lower power consumption.

We couldn't decide between Radeon HD 6870 X2 and RTX A400. We've got no test results to judge.

Be aware that Radeon HD 6870 X2 is a desktop 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 6870 X2
Radeon HD 6870 X2
NVIDIA RTX A400
RTX A400

Comparisons with similar GPUs

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Community ratings

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5 5 votes

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3.3 11 votes

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Questions & comments

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