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Radeon PRO W6400 vs RTX A400

Workstation Verdict

The RTX A400 is $24 EUR cheaper than the Radeon PRO W6400.

Maximum Capacity Reached. Remove a model to add another. (2/2)

VS
AMD Radeon
PRO W6400
Price
€243
VRAM
4 GB GDDR6✓
Mem. Speed
128 GB/s✓
FP32 Compute
3.6 TFLOPS✓
Key Specs Advantage
+20% FP32 (TFLOPS) (3.6 TFLOPS vs 3 TFLOPS)
€243Radeon Pro W6400 4GB
Used - No Listing
NVIDIA
RTX A400
Price
€219✓
VRAM
4 GB GDDR6✓
Mem. Speed
128 GB/s✓
FP32 Compute
3 TFLOPS
Key Specs Advantage

Comparable or lower specs

€219Lenovo - NVIDIA RTX A400 graphics card (4GB GDDR6-4 x Mini DisplayPort - Mini DisplayPort)
Used - No Listing
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Radeon PRO W6400 vs RTX A400: In-Depth Breakdown

AI Training & Compute

For model training, scientific simulation, and rendering, FP32 throughput is the key metric. The Radeon PRO W6400 delivers 3.6 TFLOPS against 3 TFLOPS for the RTX A400 — a 20% compute advantage. Training runs and heavy matrix operations will complete proportionally faster on the Radeon PRO W6400.

Price & Value

Pricing starts at $219 EUR for the RTX A400, a $24 EUR saving over the Radeon PRO W6400's $243 EUR. Teams working within a tighter budget may find that saving worth more than the spec gap, particularly if the smaller card already covers their typical workload.

Which should you buy: Radeon PRO W6400 or RTX A400?

Choose the Radeon PRO W6400 for maximum capacity — it leads on VRAM, bandwidth, and compute, making it the better fit for large models and training jobs. The RTX A400 is the more budget-friendly option ($24 EUR less) — a solid choice if your models fit within its 4GB and inference volume is moderate.

Frequently Asked Questions

Can the Radeon PRO W6400 or RTX A400 run large language models?

Yes, both can — each carries 4GB of VRAM, so they support a comparable range of models. From there, memory bandwidth and compute throughput are what separate their performance.

Which is better for AI training?

The Radeon PRO W6400 leads at 3.6 TFLOPS versus 3 TFLOPS, so training runs finish proportionally sooner than on the RTX A400.

Which should you buy: Radeon PRO W6400 or RTX A400?

Choose the Radeon PRO W6400 for maximum capacity — it leads on VRAM, bandwidth, and compute, making it the better fit for large models and training jobs. The RTX A400 is the more budget-friendly option ($24 EUR less) — a solid choice if your models fit within its 4GB and inference volume is moderate.

Technical Specifications Comparison

Architecture & Cores

Architecture & Cores specifications comparison between Radeon PRO W6400 and RTX A400
SpecificationRadeon PRO W6400RTX A400
ArchitectureRDNA 2Ada Lovelace
CUDA Cores (Stream Processors / CUDA Cores)768768

Memory

Memory specifications comparison between Radeon PRO W6400 and RTX A400
SpecificationRadeon PRO W6400RTX A400
VRAM Capacity4 GB4 GB
Memory TypeGDDR6GDDR6
Memory Bus64-bit64-bit
Bandwidth128 GB/s128 GB/s

Connectivity & Power

Connectivity & Power specifications comparison between Radeon PRO W6400 and RTX A400
SpecificationRadeon PRO W6400RTX A400
InterfacePCIe 4.0 x4PCIe 4.0 x16
TDP50 W50 W
ReleasedMar 2022Aug 2023

Workstation

Workstation specifications comparison between Radeon PRO W6400 and RTX A400
SpecificationRadeon PRO W6400RTX A400
FP32 (TFLOPS)3.6 TFLOPS✓3 TFLOPS
ECCYesYes
NVLinkNoNo
Form factorlow-profilelow-profile