Home / NVIDIA / NVIDIA RTX A4000H: Performance and Specs

NVIDIA RTX A4000H

NVIDIA RTX A4000H: Power for Professionals and Enthusiasts in 2025

April 2025

1. Architecture and Key Features

Ampere Architecture: The Foundation of Performance

The NVIDIA RTX A4000H is built on an updated version of the Ampere architecture that debuted back in 2020. The card uses a 8nm manufacturing process from Samsung, optimized for a balance between energy efficiency and performance. At its core are 6144 CUDA cores, 48 RT (ray tracing) cores, and 192 Tensor cores for AI algorithms.

RTX Technologies, DLSS 3.5, and FidelityFX

The RTX A4000H supports all key NVIDIA features:

- RTX (Real-Time Ray Tracing): Hardware-accelerated real-time ray tracing for realistic lighting and shadows.

- DLSS 3.5: Artificial intelligence boosts FPS by generating frames and improving detail.

- Compatibility with FidelityFX Super Resolution (FSR): Although FSR is an AMD technology, the card works correctly with it in hybrid scenarios.

2. Memory: Speed and Capacity

GDDR6: 16 GB for Complex Tasks

The graphics card is equipped with 16 GB of GDDR6 memory with a 256-bit bus. The bandwidth reaches 448 GB/s, which is 15% higher than that of the previous RTX A4000. This amount allows for handling 8K textures, heavy 3D scenes, and neural network models without memory overload.

Impact on Performance

In games like Cyberpunk 2077: Phantom Liberty (2024), 16 GB ensures stable FPS even at ultra settings in 4K. For professionals, this means the ability to render projects in Blender or Unreal Engine 5 without frequent access to system memory.

3. Gaming Performance

FPS in Popular Titles

- Cyberpunk 2077 (4K, Ultra, RTX On, DLSS 3.5): 58-62 FPS.

- Horizon Forbidden West PC Edition (1440p, Ultra): 85-90 FPS.

- Starfield: Enhanced Edition (1080p, Ultra): 120-130 FPS.

Ray Tracing: Beauty Comes at a Cost

Activating RTX reduces FPS by 25-40%, but DLSS 3.5 compensates for the losses, adding up to 30% performance. For instance, in Alan Wake III (2025) at 1440p with DLSS, the game consistently delivers 75 FPS compared to 45 FPS without AI upscaling.

Optimal Resolutions

- 1080p: Maximum settings in any game.

- 1440p: Ideal for high refresh rate monitors.

- 4K: Requires DLSS/FSR for smooth gameplay.

4. Professional Tasks

Video Editing and 3D Rendering

- DaVinci Resolve: Rendering an 8K project takes 20% less time than on the RTX 3080.

- Blender (Cycles): CUDA acceleration achieves a speed of 142 samples/min (versus 98 for the RTX 3060 Ti).

Scientific Calculations

With support for CUDA and OpenCL, the card handles tasks in molecular modeling and data analysis. For example, in MATLAB, simulating physical processes is sped up by 3-4 times compared to CPU performance.

5. Power Consumption and Cooling

TDP: 140 Watts — An Efficient Giant

The RTX A4000H consumes less power than gaming counterparts (e.g., RTX 4070 Ti with a TDP of 285 Watts). This makes it suitable for use in compact workstations.

Cooling Recommendations

- Case: At least 2 intake fans and 1 exhaust fan.

- Thermal Interface: Replacing the thermal paste every 2 years can reduce temperatures by 5-7°C.

Under load, the card heats up to 72-75°C while keeping noise levels below 38 dB.

6. Comparison with Competitors

AMD Radeon Pro W6800: A Battle for the Crown

- Pros of W6800: 32 GB of GDDR6 memory, performs better in tasks with large textures.

- Pros of A4000H: DLSS 3.5, higher performance in rendering with RTX.

NVIDIA RTX 4060 Ti: Gaming Rival

The RTX 4060 Ti is cheaper ($499 compared to $899 for the A4000H) but lags in professional tasks (8 GB of memory, fewer CUDA cores).

7. Practical Tips

Power Supply: 550 Watts — Minimum

Even with a TDP of 140 Watts, a power supply with some headroom is needed for stability. Recommended models include Corsair RM550x or Be Quiet! Straight Power 11.

Compatibility

- Platform: PCIe 4.0 x16 (backward compatibility with 3.0).

- Drivers: Studio Driver for application work, Game Ready Driver for gaming.

8. Pros and Cons

Pros:

- Ideal for professionals and gamers.

- Energy efficiency.

- Support for DLSS 3.5 and RTX.

Cons:

- High price ($899 for new models).

- No HDMI 2.2 (only 2.1).

9. Final Verdict

The RTX A4000H is a versatile tool for those seeking a balance between gaming and professional performance. It is suitable for:

- Designers and Engineers: Rendering speed and stability.

- Enthusiast Gamers: 4K with DLSS and ray tracing.

- Researchers: CUDA-accelerated computations.

If your budget allows for a long-term investment, the A4000H will be a reliable choice for the next 3-4 years.

Basic

Label Name

NVIDIA

Platform

Desktop

Launch Date

April 2021

Model Name

RTX A4000H

Generation

Quadro Ampere

Base Clock

735MHz

Boost Clock

1560MHz

Bus Interface

PCIe 4.0 x16

Transistors

17,400 million

RT Cores

Tensor Cores

Tensor Cores are specialized processing units designed specifically for deep learning, providing higher training and inference performance compared to FP32 training. They enable rapid computations in areas such as computer vision, natural language processing, speech recognition, text-to-speech conversion, and personalized recommendations. The two most notable applications of Tensor Cores are DLSS (Deep Learning Super Sampling) and AI Denoiser for noise reduction.

192

TMUs

Texture Mapping Units (TMUs) serve as components of the GPU, which are capable of rotating, scaling, and distorting binary images, and then placing them as textures onto any plane of a given 3D model. This process is called texture mapping.

192

Foundry

Samsung

Process Size

8 nm

Architecture

Ampere

Memory Specifications

Memory Size

16GB

Memory Type

GDDR6

Memory Bus

The memory bus width refers to the number of bits of data that the video memory can transfer within a single clock cycle. The larger the bus width, the greater the amount of data that can be transmitted instantaneously, making it one of the crucial parameters of video memory. The memory bandwidth is calculated as: Memory Bandwidth = Memory Frequency x Memory Bus Width / 8. Therefore, when the memory frequencies are similar, the memory bus width will determine the size of the memory bandwidth.

256bit

Memory Clock

1750MHz

Bandwidth

Memory bandwidth refers to the data transfer rate between the graphics chip and the video memory. It is measured in bytes per second, and the formula to calculate it is: memory bandwidth = working frequency × memory bus width / 8 bits.

448.0 GB/s

Theoretical Performance

Pixel Rate

Pixel fill rate refers to the number of pixels a graphics processing unit (GPU) can render per second, measured in MPixels/s (million pixels per second) or GPixels/s (billion pixels per second). It is the most commonly used metric to evaluate the pixel processing performance of a graphics card.

149.8 GPixel/s

Texture Rate

Texture fill rate refers to the number of texture map elements (texels) that a GPU can map to pixels in a single second.

299.5 GTexel/s

FP16 (half)

An important metric for measuring GPU performance is floating-point computing capability. Half-precision floating-point numbers (16-bit) are used for applications like machine learning, where lower precision is acceptable. Single-precision floating-point numbers (32-bit) are used for common multimedia and graphics processing tasks, while double-precision floating-point numbers (64-bit) are required for scientific computing that demands a wide numeric range and high accuracy.

19.17 TFLOPS

FP64 (double)

An important metric for measuring GPU performance is floating-point computing capability. Double-precision floating-point numbers (64-bit) are required for scientific computing that demands a wide numeric range and high accuracy, while single-precision floating-point numbers (32-bit) are used for common multimedia and graphics processing tasks. Half-precision floating-point numbers (16-bit) are used for applications like machine learning, where lower precision is acceptable.

299.5 GFLOPS

FP32 (float)

An important metric for measuring GPU performance is floating-point computing capability. Single-precision floating-point numbers (32-bit) are used for common multimedia and graphics processing tasks, while double-precision floating-point numbers (64-bit) are required for scientific computing that demands a wide numeric range and high accuracy. Half-precision floating-point numbers (16-bit) are used for applications like machine learning, where lower precision is acceptable.

18.787 TFLOPS

Miscellaneous

SM Count

Multiple Streaming Processors (SPs), along with other resources, form a Streaming Multiprocessor (SM), which is also referred to as a GPU's major core. These additional resources include components such as warp schedulers, registers, and shared memory. The SM can be considered the heart of the GPU, similar to a CPU core, with registers and shared memory being scarce resources within the SM.

Shading Units

The most fundamental processing unit is the Streaming Processor (SP), where specific instructions and tasks are executed. GPUs perform parallel computing, which means multiple SPs work simultaneously to process tasks.

6144

L1 Cache

128 KB (per SM)

L2 Cache

4MB

TDP

140W

Vulkan Version

Vulkan is a cross-platform graphics and compute API by Khronos Group, offering high performance and low CPU overhead. It lets developers control the GPU directly, reduces rendering overhead, and supports multi-threading and multi-core processors.

1.3

OpenCL Version

3.0

OpenGL

4.6

DirectX

12 Ultimate (12_2)

CUDA

8.6

Power Connectors

1x 6-pin

Shader Model

6.7

ROPs

The Raster Operations Pipeline (ROPs) is primarily responsible for handling lighting and reflection calculations in games, as well as managing effects like anti-aliasing (AA), high resolution, smoke, and fire. The more demanding the anti-aliasing and lighting effects in a game, the higher the performance requirements for the ROPs; otherwise, it may result in a sharp drop in frame rate.

Suggested PSU

300W

Benchmarks

FP32 (float)

Score

18.787 TFLOPS

Compared to Other GPU

FP32 (float) / TFLOPS

GeForce RTX 4080 Max-Q

20.441 +8.8%

GeForce RTX 3080 Mobile

19.36 +3%

RTX A4000H

18.787

Arc A750

16.856 -10.3%

Tesla V100S PCIe 32 GB

16.023 -14.7%