NVIDIA started RTX A400 sales 16 April 2024. This is an Ampere architecture desktop card based on 8 nm manufacturing process and primarily aimed at designers. 4 GB of GDDR6 memory clocked at 1.5 GHz are supplied, and together with 64 Bit memory interface this creates a bandwidth of 96 GB/s.

Compatibility-wise, this is a single-slot graphics card attached via PCIe 4.0 x8 interface. Its manufacturer default version has a length of 163 mm. No additional power connector is required, and power consumption is at 50 Watt.

Primary details

Some basic facts about RTX A400: architecture, market segment, release date etc.

Place in the ranking	417
Place by popularity	not in top-100
Power efficiency	15.72	of 100.00 (Radeon 890M)
Architecture	Ampere (2020−2024)
GPU code name	GA107
Market segment	Workstation
Release date	16 April 2024 (less than a year ago)

Detailed specifications

RTX A400's specs such as number of shaders, GPU base clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of RTX A400's performance, but for precise assessment you have to consider its benchmark and gaming test results.

Pipelines / CUDA cores	768	of 21760 (GeForce RTX 5090)
Core clock speed	727 MHz	of 2610 MHz (Radeon RX 6500 XT)
Boost clock speed	1762 MHz	of 3599 MHz (Radeon RX 7990 XTX)
Number of transistors	8,700 million	of 208,000 million (B200 SXM 192 GB)
Manufacturing process technology	8 nm	of 3 nm (Arc Graphics 140V)
Power consumption (TDP)	50 Watt	of 2400 Watt (Data Center GPU Max Subsystem)
Texture fill rate	42.29	of 2,554 (Radeon Instinct MI300X)
Floating-point processing power	2.706 TFLOPS	of 109.7 (GeForce RTX 5090)
ROPs	16	of 192 (Radeon RX 7900 XTX)
TMUs	24	of 1280 (Data Center GPU Max NEXT)
Tensor Cores	24	of 1216 (Radeon Instinct MI300X)
Ray Tracing Cores	6	of 170 (GeForce RTX 5090)

Form factor & compatibility

This section provides details about the physical dimensions of RTX A400 and its compatibility with other computer components. This information is useful when selecting a computer configuration or upgrading an existing one. For desktop graphics cards, it includes details about the interface and bus (for motherboard compatibility) and additional power connectors (for power supply compatibility).

Interface	PCIe 4.0 x8
Length	163 mm
Width	1-slot
Supplementary power connectors	None

VRAM capacity and type

Parameters of memory installed on RTX A400: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors have no dedicated memory and use a shared part of system RAM instead.

Memory type	GDDR6
Maximum RAM amount	4 GB	of 294912 (Radeon Instinct MI325X)
Memory bus width	64 Bit	of 8192 Bit (Radeon Instinct MI250X)
Memory clock speed	1500 MHz	of 20000 (RTX 5000 Ada Generation Mobile)
Memory bandwidth	96 GB/s	of 5,171 GB/s (Radeon Instinct MI300X)

Connectivity and outputs

Types and number of video connectors present on RTX A400. As a rule, this section is relevant only for desktop reference graphics cards, since for notebook ones the availability of certain video outputs depends on the laptop model, while non-reference desktop models can (though not necessarily will) bear a different set of video ports.

Display Connectors

4x mini-DisplayPort 1.4a

API compatibility

APIs supported by RTX A400, sometimes including their particular versions.

DirectX	12 Ultimate (12_2)
Shader Model	6.7
OpenGL	4.6
OpenCL	3.0
Vulkan	1.3
CUDA	8.6

Benchmark performance

Synthetic benchmark performance of RTX A400. The combined score is measured on a 0-100 point scale.

Combined synthetic benchmark score

This is our combined benchmark score. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

RTX A400 11.27

Passmark

This is the most ubiquitous GPU benchmark. It gives the graphics card a thorough evaluation under various types of load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

RTX A400 4346

GeekBench 5 OpenCL

Geekbench 5 is a widespread graphics card benchmark combined from 11 different test scenarios. All these scenarios rely on direct usage of GPU's processing power, no 3D rendering is involved. This variation uses OpenCL API by Khronos Group.

RTX A400 22671

Gaming performance

Let's see how good RTX A400 is for gaming. Particular gaming benchmark results are measured in frames per second. Comparisons with game system requirements are included, but remember that sometimes official requirements may reflect reality inaccurately.