G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.

Radeon RX 580 2048SP vs Radeon RX 6400 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with Ryzen 7 9800X3D to isolate GPU performance.

Search any supported game below to compare 1080p FPS for both components.

Radeon RX 580 2048SP vs Radeon RX 6400: Pros, Cons & Final Verdict

See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.

Radeon RX 580 2048SP

2018

Why buy it

✅58.9% more average FPS across 50 tracked games in our benchmark data.
✅300% more VRAM for high-resolution textures and newer games (16 GB vs 4 GB).

Trade-offs

❌Older hardware, 16 GB of VRAM, and weaker feature support mean it will age faster in newer AAA releases.
❌
44% HIGHER MSRP
$229 MSRPvs$159 MSRP
❌Lower G3D Mark per dollar, at 33.3 vs 48.6 G3D/$ ($229 MSRP vs $159 MSRP).
❌183% higher power demand at 150W vs 53W.
❌40.1% longer card at 241mm vs 172mm.

Radeon RX 6400

2022

Why buy it

✅Costs $70 less on MSRP ($159 MSRP vs $229 MSRP).
✅Delivers 45.8% more G3D Mark for each dollar spent, at 48.6 vs 33.3 G3D/$ ($159 MSRP vs $229 MSRP).
✅Better long-term bet: RDNA 2.0 (2020−2025) on 6nm gives it a newer hardware base for upcoming games.
✅Draws 53W instead of 150W, a 97W reduction.
✅Measures 172mm instead of 241mm, a 69mm shorter card that is more SFF-friendly.

Trade-offs

❌Lower average FPS than Radeon RX 580 2048SP across 50 tracked games in our benchmark data.
❌Less VRAM, with 4 GB vs 16 GB for high-resolution textures and newer games.

Quick Answers

Which GPU is faster for gaming right now?

Radeon RX 580 2048SP is the faster gaming card right now. In our data, it leads by 58.9% in average FPS across 50 tracked games in our benchmark data. PassMark G3D leans toward Radeon RX 6400 instead at 7,728 vs 7,633, so for this question the real-game FPS result matters more than the synthetic split.

Which GPU is the safer long-term pick for 2026 and beyond?

Radeon RX 6400 is the safer long-term pick for 2026 and beyond. The case is simple: the newer frame-generation stack, FSR Frame Generation + AFMF (2023) instead of FSR Frame Generation (2023), a 6nm process instead of 14nm, 12 vs 0 ray-tracing units, and a newer 2022 generation instead of 2018. That gives it the more rounded hardware package for newer games.

Which GPU is the better buy today?

Radeon RX 6400 makes the most sense to buy today. It is $70 cheaper on MSRP at $159 vs $229, and it leads G3D-per-dollar by 45.8% (48.6 vs 33.3), which is enough to swing the recommendation its way. Radeon RX 580 2048SP still makes more sense if max raw gaming performance matters more than value.

Radeon RX 580 2048SP vs Radeon RX 6400 Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

Radeon RX 580 2048SP

The Radeon RX 580 2048SP is manufactured by AMD. It was released in October 15 2018. It features the GCN 4.0 architecture. The core clock ranges from 1168 MHz to 1284 MHz. It has 2048 shading units. The thermal design power (TDP) is 150W. Manufactured using 14 nm process technology. G3D Mark benchmark score: 7,633 points.

Radeon RX 6400

The Radeon RX 6400 is manufactured by AMD. It was released in January 19 2022. It features the RDNA 2.0 architecture. The core clock ranges from 1923 MHz to 2321 MHz. It has 768 shading units. The thermal design power (TDP) is 53W. Manufactured using 6 nm process technology. It features 12 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 7,728 points. Launch price was $159.

⚡

Graphics Performance

The Radeon RX 580 2048SP scores 7,633 and the Radeon RX 6400 reaches 7,728 in the G3D Mark benchmark — just a 1.2% difference, making them near-identical in rasterization performance. The Radeon RX 580 2048SP is built on GCN 4.0 while the Radeon RX 6400 uses RDNA 2.0, both on 14 nm vs 6 nm. Shader units: 2,048 (Radeon RX 580 2048SP) vs 768 (Radeon RX 6400). Raw compute: 5.259 TFLOPS (Radeon RX 580 2048SP) vs 3.565 TFLOPS (Radeon RX 6400). Boost clocks: 1284 MHz vs 2321 MHz.

Feature	Radeon RX 580 2048SP	Radeon RX 6400
G3D Mark Score	7,633	7,728+1%
Architecture	GCN 4.0	RDNA 2.0
Process Node	14 nm	6 nm
Shading Units	2048+167%	768
Compute (TFLOPS)	5.259 TFLOPS+48%	3.565 TFLOPS
Boost Clock	1284 MHz	2321 MHz+81%
ROPs	32	32
TMUs	128+167%	48
L1 Cache	512 KB+100%	256 KB
L2 Cache	2 MB+100%	1 MB
Frame Generation	FSR upscaling + limited Frame Generation	FSR 3 + AFMF

✨

Advanced Features (DLSS/FSR)

Both cards support Frame Generation, but the Radeon RX 6400 is on the newer stack with FSR Frame Generation + AFMF, while the Radeon RX 580 2048SP stays on FSR Frame Generation.

Feature	Radeon RX 580 2048SP	Radeon RX 6400
Upscaling Tech	FSR Upscaling / FSR 4	FSR 3
Frame Generation	FSR Frame Generation	FSR Frame Generation + AFMF
Ray Reconstruction	No	No
Low Latency	AMD Anti-Lag	AMD Anti-Lag

💾

Video Memory (VRAM)

The Radeon RX 580 2048SP has 16 GB of VRAM, while the Radeon RX 6400 carries 4 GB. Radeon RX 580 2048SP gives you 300% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bandwidth: 224 GB/s (Radeon RX 580 2048SP) vs 128 GB/s (Radeon RX 6400) — a 75% advantage for the Radeon RX 580 2048SP. Memory bus width is 256-bit on the Radeon RX 580 2048SP and 64-bit on the Radeon RX 6400. L2 Cache: 2 MB (Radeon RX 580 2048SP) vs 1 MB (Radeon RX 6400) — the Radeon RX 580 2048SP has significantly larger on-die cache to reduce VRAM reliance.

Feature	Radeon RX 580 2048SP	Radeon RX 6400
VRAM Capacity	16 GB+300%	4 GB
Memory Type	GDDR5	GDDR6
Memory Bandwidth	224 GB/s+75%	128 GB/s
Bus Width	256-bit+300%	64-bit
L2 Cache	2 MB+100%	1 MB

🖥️

Display & API Support

DirectX support: 12 (Radeon RX 580 2048SP) vs 12.2 (Radeon RX 6400). Vulkan: 1.3 vs 1.3. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 4 vs 2.

Feature	Radeon RX 580 2048SP	Radeon RX 6400
DirectX	12	12.2+2%
Vulkan	1.3	1.3
OpenGL	4.6	4.6
Max Displays	4+100%	2

🎬

Media & Encoding

Hardware encoder: VCE 3.4 (Radeon RX 580 2048SP) vs None (Radeon RX 6400). Decoder: UVD 6.3 vs VCN 3.0 (Limited). Supported codecs: H.264,HEVC,VP9 (Radeon RX 580 2048SP) vs MPEG-2,H.264 (Decode),HEVC (Decode) (Radeon RX 6400).

Feature	Radeon RX 580 2048SP	Radeon RX 6400
Encoder	VCE 3.4	None
Decoder	UVD 6.3	VCN 3.0 (Limited)
Codecs	H.264,HEVC,VP9	MPEG-2,H.264 (Decode),HEVC (Decode)

🔌

Power & Dimensions

The Radeon RX 580 2048SP draws 150W versus the Radeon RX 6400's 53W — a 95.6% difference. The Radeon RX 6400 is more power-efficient. Recommended PSU: 450W (Radeon RX 580 2048SP) vs 350W (Radeon RX 6400). Power connectors: 8-pin vs None. Card length: 241mm vs 172mm, occupying 2 vs 1 slots. Typical load temperature: 75°C vs 75°C.

Feature	Radeon RX 580 2048SP	Radeon RX 6400
TDP	150W	53W-65%
Recommended PSU	450W	350W-22%
Power Connector	8-pin	None
Length	241mm	172mm
Height	—	112mm
Slots	2	1-50%
Temp (Load)	75°C	75°C
Perf/Watt	50.9	145.8+186%

💰

Value Analysis

At launch, the Radeon RX 580 2048SP came in at $229, while the Radeon RX 6400 launched at $159. On MSRP, Radeon RX 6400 was 30.6% cheaper ($70 less). Performance per dollar on MSRP (G3D Mark / MSRP): 33.3 (Radeon RX 580 2048SP) vs 48.6 (Radeon RX 6400) — the Radeon RX 6400 offers 45.9% better value. The newer card here is Radeon RX 6400 (2022 vs 2018).

Feature	Radeon RX 580 2048SP	Radeon RX 6400
MSRP	$229	$159-31%
Performance per Dollar	33.3	48.6+46%
Codename	Polaris 20	Navi 24
Release	October 15 2018	January 19 2022
Ranking	#334	#330

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