RTX PRO 4000 Blackwell SFF vs Radeon RX 6400

Aggregate performance score

We've compared Radeon RX 6400 with RTX PRO 4000 Blackwell SFF, including specs and performance data.

RX 6400
2022
4 GB GDDR6, 53 Watt
17.41

PRO 4000 Blackwell SFF outperforms 6400 by a whopping 290% based on our aggregate benchmark results.

Primary details

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

Place in the ranking32620
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation45.34no data
Power efficiency26.4678.13
ArchitectureRDNA 2.0 (2020−2025)Blackwell 2.0 (2025)
GPU code nameNavi 24GB203
Market segmentDesktopWorkstation
Release date19 January 2022 (3 years ago)11 August 2025 (less than a year ago)
Launch price (MSRP)$159 no data

Cost-effectiveness evaluation

The higher the ratio, the better. We use the manufacturer's recommended prices.

no data

Performance to price scatter graph

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 cores7688960
Core clock speed1923 MHz790 MHz
Boost clock speed2321 MHz1337 MHz
Number of transistors5,400 million45,600 million
Manufacturing process technology6 nm5 nm
Power consumption (TDP)53 Watt70 Watt
Texture fill rate111.4374.4
Floating-point processing power3.565 TFLOPS23.96 TFLOPS
ROPs3296
TMUs48280
Tensor Coresno data280
Ray Tracing Cores1270
L0 Cache192 KBno data
L1 Cache256 KB8.8 MB
L2 Cache1024 KB48 MB
L3 Cache16 MBno data

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 4.0 x4PCIe 5.0 x8
Lengthno data167 mm
Width1-slot2-slot
Supplementary power connectorsNoneNone

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 typeGDDR6GDDR7
Maximum RAM amount4 GB24 GB
Memory bus width64 Bit192 Bit
Memory clock speed2000 MHz1125 MHz
Memory bandwidth128.0 GB/s432.0 GB/s
Resizable BAR++

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display Connectors1x HDMI 2.1, 1x DisplayPort 1.4a4x mini-DisplayPort 2.1b
HDMI+-

API and SDK support

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

DirectX12 Ultimate (12_2)12 Ultimate (12_2)
Shader Model6.76.8
OpenGL4.64.6
OpenCL2.23.0
Vulkan1.31.4
CUDA-12.0
DLSS-+

Synthetic benchmarks

Non-gaming benchmark results comparison. The combined score is measured on a 0-100 point scale.


Combined synthetic benchmark score

This is our combined benchmark score.

RX 6400 17.41
RTX PRO 4000 Blackwell SFF 67.89
+290%

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.

RX 6400 7697
Samples: 1604
RTX PRO 4000 Blackwell SFF 30019
+290%
Samples: 2

Gaming performance

Let's see how good the compared graphics cards are for gaming. Particular gaming benchmark results are measured in FPS.

Pros & cons summary


Performance score 17.41 67.89
Recency 19 January 2022 11 August 2025
Maximum RAM amount 4 GB 24 GB
Chip lithography 6 nm 5 nm
Power consumption (TDP) 53 Watt 70 Watt

RX 6400 has 32.1% lower power consumption.

RTX PRO 4000 Blackwell SFF, on the other hand, has a 289.9% higher aggregate performance score, an age advantage of 3 years, a 500% higher maximum VRAM amount, and a 20% more advanced lithography process.

The RTX PRO 4000 Blackwell SFF is our recommended choice as it beats the Radeon RX 6400 in performance tests.

Be aware that Radeon RX 6400 is a desktop graphics card while RTX PRO 4000 Blackwell SFF is a workstation one.

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AMD Radeon RX 6400
Radeon RX 6400
NVIDIA RTX PRO 4000 Blackwell SFF
RTX PRO 4000 Blackwell SFF

Other comparisons

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Community ratings

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