AMD Radeon RX 6400

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AMD Radeon RX 6400
The only potential use case for the RX 6400 would be in a low profile system where a conventional full size simply won't fit. Thing is, though it would have to be a modern small form factor PC that supports PCIe 4.0 to be worth it, this would be required to unlock the full performance from the 6400, but also the system itself would be worth enough to justify adding such an expensive component. $160 is very expensive for what the RX 6400 offers overall.
– As reviewed by TechSpot on May 2022
RDNA 2
Architecture
Entry-level
Product Tier
768
Shader Cores
32
ROPs
48
TMUs
12
RT Cores
4 GB
Memory
GDDR6
Memory Type
128 GB/s
Bandwidth
53 W
TDP
$563
Price
GPU Snapshot
Release date:Apr 20, 2022Price at Launch:$159
Type:DesktopArchitecture:RDNA 2
Generation:RX 6000 seriesProduct Tier:Entry-level
VRAM Capacity:4 GBTotal Board Power:53 W
Core Configuration
Shader Cores:768TMUs:48
ROPs:32L2 Cache:1 MB
L3 Cache:16 MB
Memory
VRAM Capacity:4 GBMemory Type:GDDR6
Memory Speed:16 GbpsMemory Bus:64-bit
Bandwidth:128 GB/s
Graphics Processing
Base Clock:1.92 GHzGame Clock:2.03 GHz
Boost Clock:2.32 GHzFP32 Throughput:3.56 TFLOPs
Ray Tracing:YesRay Tracing Cores:12
Process Size:6nmProcess Name:TSMC N6
Die Size:107 mm²
Power & Connectivity
Total Board Power:53 WPower Connectors:None
Bus Interface:PCIe 4.0 x4HDMI Support:HDMI 2.1
DisplayPort Support:DP 1.4aDSC:1.2a
Max Displays:2
Media & Software Support
DirectX Support:12 UltimateShader Model:6.8
Vulkan Version:1.4OpenGL Version:4.6

GPU Benchmarks

GPU benchmark scores are aggregated from dozens of tests conducted in TechSpot's labs, compiled from our full library of GPU reviews and gaming benchmarks. Scores are normalized to a shared baseline and organized by resolution, covering rasterized workloads exclusively. Ray tracing and upscaling technologies are disabled to guarantee consistent, like-for-like comparisons.

[GPU] 4K Gaming

Price History

AMD Radeon RX 6400 pricing

Last 6 months
Price Date
Current $563 Feb 2, 2026
Highest* $563 Feb 2, 2026
Lowest* $469 Jan 16, 2026
Average $497
* Prices are based on listings from Newegg and other major retailers over the past 12+ months.
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Reviews and Ratings

58

Average Score

Based on 4 reviews

8.8

User Score

Based on 113 reviews

Reviewers Liked

  • Discrete graphics for sub-$200
  • Extremely quiet

Reviewers Didn't Like

  • Fairly expensive even in current market situation
  • Very low overall performance
  • Not much cheaper than RX 6500 XT
  • Trades blows with 3-years-old GTX 1650

Intel Arc 3 A380 vs. AMD Radeon RX 6400: We have to admit the Intel Arc 3 A380 didn't perform as poorly as we had expected in this 51 game benchmark, but that's not to say the experience was good overall. There were a few titles where the experience was great and many where it was just decent, but there were many where the performance was horrible or stability was a problem, or even both.

By TechSpot on
30

The only potential use case for the RX 6400 would be in a low profile system where a conventional full size simply won't fit. Thing is, though it would have to be a modern small form factor PC that supports PCIe 4.0 to be worth it, this would be required to unlock the full performance from the 6400, but also the system itself would be worth enough to justify adding such an expensive component. $160 is very expensive for what the RX 6400 offers overall.

By TechSpot on
70

AMD's Radeon RX 6400 low-profile graphics card delivers a bump in performance over older GPUs and integrated graphics—though not a big one—with no need for extra power.

By PCMag on
80

The Radeon RX 6400 may not be the cutting edge, but it is a solid foundation for your gaming PC if you’re looking to stay current without breaking the bank.

By CGM on
50

The Radeon RX 6400 represents the lowest performance "modern" GPU we've seen, but cuts too many features and doesn't reduce pricing enough to truly qualify as the budget card it's supposed to be. The only real draw is if you want a half-height GPU or don't want a 6-pin power connector.

By Tom's Hardware on

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By techPowerUp! on

The AMD Radeon RX 6400 comes with the narrowest PCI-Express interface of all consumer graphics cards. It's just four lanes wide, a quarter of what we're used to on graphics cards, which typically have a x16 interface. It's certainly an interesting...

By techPowerUp! on

Last week AMD quietly launched the Radeon RX 6400 series as the new low-end RDNA2 graphics. With Radeon RX 6400 there are finally low-profile, single-slot PCIe RDNA2 graphics cards whether they be for 2U servers, mini ITX builds, or other interesting...

By Phoronix on

If you have a bit more money to spend, the RX 580 8 GB ($200) should be worth checking out—twice the VRAM, great operation on PCIe 3.0, but higher power draw, just like the RX 570. A unique selling point of the the RX 6400 is that it works without the additional power connector. Still, there are lots of alternatives to the RX 6400, and while none come with the sticker "latest and greatest tech," I'm not sure if that's really something you must have when shopping on a budget.

By TechPowerUp on
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