Skip to content

GPU Comparison

Select up to 2 GPUs to analyze their pricing, performance, and specifications side-by-side.

Market Value Leader

Market comparison is currently pending while we verify the latest benchmarks for Radeon RX 590 and Radeon RX 6400.

Quick Verdict

On raw speed the Radeon RX 590 comes out noticeably faster — about 17% ahead of the Radeon RX 6400.

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

VS
AMD
Radeon RX 590
Price
Awaiting Data
Performance
7/100✓
VRAM
8 GB GDDR5✓
Key Specs Advantage
+300% Memory Bus (256-bit vs 64-bit)
+200% Stream Processors (2,304 vs 768)
+100% Bandwidth (256 GB/s vs 128 GB/s)
AMD
Radeon RX 6400
Price
Awaiting Data
Performance
6/100
VRAM
4 GB GDDR6
Key Specs Advantage
+50% Boost Clock (2,321 MHz vs 1,545 MHz)
Skip to Spec Sheets ↓

Radeon RX 590 vs Radeon RX 6400: In-Depth Breakdown

Performance: Radeon RX 590 vs Radeon RX 6400

The Radeon RX 590 is noticeably faster, around 17% ahead of the Radeon RX 6400. Both cards sit in the same broad class, well suited to entry-level 1080p. The Radeon RX 590 packs 2,304 stream processors versus 768 on the Radeon RX 6400.

Power & Efficiency

At 53W against 225W, the Radeon RX 6400 is both the lower-power and the more efficient card, making it the easier build to cool and power. Its more modern RDNA 2 architecture on a TSMC N6 process is part of why it does more with each watt.

VRAM & Future-Proofing

The Radeon RX 590 carries 8GB versus 4GB on the Radeon RX 6400. The extra 4GB helps at 4K, with high-resolution texture packs, and for content-creation or local-AI workloads that exhaust smaller buffers. The Radeon RX 590's memory is also faster — 256 GB/s versus 128 GB/s (256-bit vs 64-bit bus) — which helps feed the GPU at 4K and with heavy textures.

Generation & Longevity

The Radeon RX 6400 is roughly 4 years newer than the Radeon RX 590 (RDNA 2 vs GCN 4.0 (Polaris)), so it generally benefits from a more modern architecture and longer driver-support runway.

Which should you buy: Radeon RX 590 or Radeon RX 6400?

The Radeon RX 590 is the faster card by about 17%. With live pricing limited for this pair, base your decision on the spec differences above — particularly VRAM and power draw — and check current stock before buying.

Frequently Asked Questions

Is the Radeon RX 590 better than the Radeon RX 6400?

The Radeon RX 590 is noticeably faster, roughly 17% ahead. If your budget allows, it's the stronger pick.

Which is better for 4K gaming, the Radeon RX 590 or the Radeon RX 6400?

Neither is a dedicated 4K card; both are best at entry-level 1080p. For 4K you'd want a faster GPU, or lean on upscaling.

Does the Radeon RX 590 have enough VRAM advantage to matter?

Its 8GB (vs 4GB) gives real headroom for 4K, heavy texture mods, and creative/AI work. At 1080p the gap matters less.

Technical Specifications Comparison

Architecture & Cores

SpecificationRadeon RX 590Radeon RX 6400
ArchitectureGCN 4.0 (Polaris)RDNA 2
Process NodeGloFo 12nmTSMC N6
CUDA Cores (Stream Processors / Stream Processors)2,304✓768
Ray Tracing Cores—12

Clock Speeds

SpecificationRadeon RX 590Radeon RX 6400
Base Clock1,469 MHz1,923 MHz✓
Boost Clock1,545 MHz2,321 MHz✓

Memory

SpecificationRadeon RX 590Radeon RX 6400
VRAM Capacity8 GB✓4 GB
Memory TypeGDDR5GDDR6
Memory Bus256-bit✓64-bit
Memory Speed8 Gbps16 Gbps✓
Bandwidth256 GB/s✓128 GB/s

Connectivity & Power

SpecificationRadeon RX 590Radeon RX 6400
InterfacePCIe 3.0 x16PCIe 4.0 x4
TDP225 W53 W✓
Power Connectors1x 8-pinNone
ReleasedNov 2018Jan 2022
Back to Top ↑