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.

Head-to-Head Verdict, Benchmarks, Value & Long-Term Outlook

This comparison brings together gaming FPS, raw graphics performance, VRAM, feature set, power efficiency, pricing context, and long-term value so you can see which GPU actually makes more sense.

Radeon RX 780

2024

Why buy it

✅92.6% more average FPS across 50 tracked games in our benchmark data.
✅More future proof: RDNA 3.0 (2022−2026) on 5nm with a newer platform for upcoming games.
✅More future proof: RDNA 3.0 (2022−2026) on 5nm with a newer platform for upcoming games.

Trade-offs

❌
213.8% HIGHER MSRP
$499 MSRPvs$159 MSRP
❌Lower G3D Mark per dollar, at 15.3 vs 48.6 G3D/$ ($499 MSRP vs $159 MSRP).
❌239.6% higher power demand at 180W vs 53W.

Radeon RX 6400

2022

Why buy it

✅Costs $340 less on MSRP ($159 MSRP vs $499 MSRP).
✅Delivers 216.7% more G3D Mark for each dollar spent, at 48.6 vs 15.3 G3D/$ ($159 MSRP vs $499 MSRP).
✅Draws 53W instead of 180W, a 127W reduction.

Trade-offs

❌Lower average FPS than Radeon RX 780 across 50 tracked games in our benchmark data.
❌Weaker long-term outlook: Radeon RX 780 is the safer future-proof pick thanks to newer hardware and better gaming feature support.

Radeon RX 780

2024

Radeon RX 6400

2022

Why buy it

✅92.6% more average FPS across 50 tracked games in our benchmark data.
✅More future proof: RDNA 3.0 (2022−2026) on 5nm with a newer platform for upcoming games.
✅More future proof: RDNA 3.0 (2022−2026) on 5nm with a newer platform for upcoming games.

Why buy it

✅Costs $340 less on MSRP ($159 MSRP vs $499 MSRP).
✅Delivers 216.7% more G3D Mark for each dollar spent, at 48.6 vs 15.3 G3D/$ ($159 MSRP vs $499 MSRP).
✅Draws 53W instead of 180W, a 127W reduction.

Trade-offs

❌
213.8% HIGHER MSRP
$499 MSRPvs$159 MSRP
❌Lower G3D Mark per dollar, at 15.3 vs 48.6 G3D/$ ($499 MSRP vs $159 MSRP).
❌239.6% higher power demand at 180W vs 53W.

Trade-offs

❌Lower average FPS than Radeon RX 780 across 50 tracked games in our benchmark data.
❌Weaker long-term outlook: Radeon RX 780 is the safer future-proof pick thanks to newer hardware and better gaming feature support.

Quick Answers

So, is Radeon RX 780 better than Radeon RX 6400?

Yes. Radeon RX 780 is clearly the better overall GPU here. Radeon RX 780 averages 92.6% more FPS across 50 tracked games in our benchmark data. You are also looking at 7,658 vs 7,728 in G3D Mark. On top of that, Radeon RX 780 is a 2024 card with FSR 3 + AFMF, while Radeon RX 6400 is a 2022 model from an older generation with FSR 3 + AFMF. So this is not really a tight same-tier comparison. It is more a modern card against an older, weaker alternative.

Which one is more future-proof for 2026 and beyond?

Radeon RX 780 is the more future-proof choice for 2026 and beyond. You are getting a newer 2024 generation instead of 2022, 400.0% more ray-tracing hardware, and a 5nm process instead of 6nm. That makes it the safer long-run choice for modern games.

Which one is the smarter buy today, not just the cheaper card?

Radeon RX 780 is about 213.8% more expensive on MSRP at $499 MSRP versus $159 MSRP, and you are getting 92.6% more estimated average FPS across 50 tracked games in our benchmark data and a lower G3D Mark (7,658 vs 7,728). Radeon RX 6400 still holds the G3D-per-dollar lead, so the performance win comes with a real value premium. If you are comfortable paying the premium for the stronger gaming result, Radeon RX 780 is the one to buy. If staying closer to budget matters more, Radeon RX 6400 still makes more sense on price alone and remains capable enough for modern gaming.

Is Radeon RX 6400 still worth buying for gaming in 2026?

Yes. Radeon RX 6400 is still a strong gaming GPU in 2026: it is still comfortable for 1080p and decent for 1440p, though 4K is more situational. This mostly comes down to price. If you want to stay closer to $159 MSRP, it remains a strong choice; if you are comfortable paying more, Radeon RX 780 earns that extra money with a clearly stronger gaming result and a more complete overall package.

Games Benchmarks

Real-world benchmarks and performance projections based on comprehensive hardware analysis and comparative metrics. Values represent expected performance on High/Ultra settings at 1080p, 1440p, and 4K. Modeled using a Ryzen 7 9800X3D reference profile to minimize specific CPU bottlenecks.

Note: Performance behavior can vary per game. Specific architectures may perform better or worse depending on game engine optimizations and API implementation.

Radeon RX 780 Benchmark Check

Radeon RX 6400 Benchmark Check

Path of Exile 2

Preset	Radeon RX 780	Radeon RX 6400
1080p
low	125 FPS	104 FPS
medium	114 FPS	92 FPS
high	96 FPS	79 FPS
ultra	82 FPS	66 FPS
1440p
low	108 FPS	94 FPS
medium	92 FPS	80 FPS
high	77 FPS	67 FPS
ultra	67 FPS	56 FPS
4K
low	59 FPS	45 FPS
medium	51 FPS	42 FPS
high	41 FPS	31 FPS
ultra	37 FPS	28 FPS

Open Radeon RX 780 Open Radeon RX 6400

Path of Exile 2

Path of Exile 2

Counter-Strike 2

Preset	Radeon RX 780	Radeon RX 6400
1080p
low	345 FPS	158 FPS
medium	276 FPS	124 FPS
high	230 FPS	92 FPS
ultra	172 FPS	60 FPS
1440p
low	258 FPS	104 FPS
medium	207 FPS	81 FPS
high	172 FPS	60 FPS
ultra	129 FPS	42 FPS
4K
low	160 FPS	53 FPS
medium	135 FPS	41 FPS
high	115 FPS	33 FPS
ultra	86 FPS	20 FPS

Open Radeon RX 780 Open Radeon RX 6400

Counter-Strike 2

Counter-Strike 2

League of Legends

Preset	Radeon RX 780	Radeon RX 6400
1080p
low	345 FPS	329 FPS
medium	276 FPS	278 FPS
high	230 FPS	210 FPS
ultra	172 FPS	172 FPS
1440p
low	258 FPS	232 FPS
medium	207 FPS	208 FPS
high	172 FPS	156 FPS
ultra	129 FPS	121 FPS
4K
low	172 FPS	134 FPS
medium	138 FPS	121 FPS
high	115 FPS	82 FPS
ultra	86 FPS	54 FPS

Open Radeon RX 780 Open Radeon RX 6400

League of Legends

League of Legends

Valorant

Preset	Radeon RX 780	Radeon RX 6400
1080p
low	323 FPS	251 FPS
medium	260 FPS	186 FPS
high	223 FPS	165 FPS
ultra	172 FPS	138 FPS
1440p
low	243 FPS	192 FPS
medium	203 FPS	139 FPS
high	170 FPS	126 FPS
ultra	129 FPS	101 FPS
4K
low	144 FPS	101 FPS
medium	126 FPS	74 FPS
high	102 FPS	65 FPS
ultra	85 FPS	50 FPS

Open Radeon RX 780 Open Radeon RX 6400

Valorant

Valorant

Check FPS for your specific build

Technical Specifications

Side-by-side comparison of Radeon RX 780 and Radeon RX 6400

Radeon RX 780

The Radeon RX 780 is manufactured by AMD. It was released in September 11 2024. It features the RDNA 3.0 architecture. The core clock ranges from 1295 MHz to 2335 MHz. It has 3840 shading units. The thermal design power (TDP) is 180W. Manufactured using 5 nm process technology. It features 60 dedicated ray tracing cores for enhanced lighting effects. G3D Mark benchmark score: 7,658 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 780 scores 7,658 and the Radeon RX 6400 reaches 7,728 in the G3D Mark benchmark — just a 0.9% difference, making them near-identical in rasterization performance. The Radeon RX 780 is built on RDNA 3.0 while the Radeon RX 6400 uses RDNA 2.0, both on 5 nm vs 6 nm. Shader units: 3,840 (Radeon RX 780) vs 768 (Radeon RX 6400). Raw compute: 35.87 TFLOPS (Radeon RX 780) vs 3.565 TFLOPS (Radeon RX 6400). Boost clocks: 2335 MHz vs 2321 MHz. Ray tracing: 60 RT cores (Radeon RX 780) vs 12 (Radeon RX 6400).

Feature	Radeon RX 780	Radeon RX 6400
G3D Mark Score	7,658	7,728
Architecture	RDNA 3.0	RDNA 2.0
Process Node	5 nm	6 nm
Shading Units	3840+400%	768
Compute (TFLOPS)	35.87 TFLOPS+906%	3.565 TFLOPS
Boost Clock	2335 MHz	2321 MHz
ROPs	96+200%	32
TMUs	240+400%	48
L1 Cache	768 KB+200%	256 KB
L2 Cache	4 MB+300%	1 MB
Frame Generation	FSR 3 + AFMF	FSR 3 + AFMF
Ray Tracing Cores	60+400%	12

✨

Advanced Features (DLSS/FSR)

Both cards support modern Frame Generation technology, allowing them to insert intermediate frames to smooth motion and boost perceived FPS in supported games.

Feature	Radeon RX 780	Radeon RX 6400
Upscaling Tech	FSR 3	FSR 3
Frame Generation	FSR Frame Generation + AFMF	FSR Frame Generation + AFMF
Ray Reconstruction	No	No
Low Latency	AMD Anti-Lag	AMD Anti-Lag

💾

Video Memory (VRAM)

Both cards feature 4 GB of video memory. Bus width: System vs 64-bit. L2 Cache: 4 MB (Radeon RX 780) vs 1 MB (Radeon RX 6400) — the Radeon RX 780 has significantly larger on-die cache to reduce VRAM reliance.

Feature	Radeon RX 780	Radeon RX 6400
VRAM Capacity	4 GB	4 GB
Memory Type	Shared	GDDR6
Memory Bandwidth	System	128 GB/s
Bus Width	System	64-bit
L2 Cache	4 MB+300%	1 MB

🖥️

Display & API Support

DirectX support: 12 (12_2) (Radeon RX 780) vs 12.2 (Radeon RX 6400). Vulkan: 1.4 vs 1.3. OpenGL: 4.6 vs 4.6. Maximum simultaneous displays: 4 vs 2.

Feature	Radeon RX 780	Radeon RX 6400
DirectX	12 (12_2)	12.2+2%
Vulkan	1.4+8%	1.3
OpenGL	4.6	4.6
Max Displays	4+100%	2

🎬

Media & Encoding

Hardware encoder: RDNA 3 Dual Media Engine (Radeon RX 780) vs None (Radeon RX 6400). Decoder: VCN 4.0 vs VCN 3.0 (Limited). Supported codecs: H.264,HEVC,VP9,AV1 (Radeon RX 780) vs MPEG-2,H.264 (Decode),HEVC (Decode) (Radeon RX 6400).

Feature	Radeon RX 780	Radeon RX 6400
Encoder	RDNA 3 Dual Media Engine	None
Decoder	VCN 4.0	VCN 3.0 (Limited)
Codecs	H.264,HEVC,VP9,AV1	MPEG-2,H.264 (Decode),HEVC (Decode)

🔌

Power & Dimensions

The Radeon RX 780 draws 180W versus the Radeon RX 6400's 53W — a 109% difference. The Radeon RX 6400 is more power-efficient. Recommended PSU: 350W (Radeon RX 780) vs 350W (Radeon RX 6400). Power connectors: PCIe-powered vs None. Typical load temperature: 85°C vs 75°C.

Feature	Radeon RX 780	Radeon RX 6400
TDP	180W	53W-71%
Recommended PSU	350W	350W
Power Connector	PCIe-powered	None
Length	—	172mm
Height	—	112mm
Slots	0-100%	1
Temp (Load)	85°C	75°C-12%
Perf/Watt	42.5	145.8+243%

💰

Value Analysis

The Radeon RX 780 launched at $499 MSRP, while the Radeon RX 6400 launched at $159. The Radeon RX 6400 costs 68.1% less ($340 savings) on MSRP. Performance per dollar on MSRP (G3D Mark / MSRP): 15.3 (Radeon RX 780) vs 48.6 (Radeon RX 6400) — the Radeon RX 6400 offers 217.6% better value. The Radeon RX 780 is the newer GPU (2024 vs 2022).