Radeon RX 6400 vs Radeon R9 285
We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 6400 and 2GB VRAM Radeon R9 285 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 6400 's Advantages
Released 7 years and 4 months late
Boost Clock2321MHz
More VRAM (4GB vs 2GB)
Lower TDP (53W vs 190W)
Radeon R9 285 's Advantages
Larger VRAM bandwidth (176.0GB/s vs 128.0GB/s)
1024 additional rendering cores
Score
Benchmark
FP32 (float)
Radeon RX 6400
+8%
3565
Radeon R9 285
3290
Graphics Card
Jan 2022
Release Date
Sep 2014
Navi II
Generation
Volcanic Islands
Desktop
Type
Desktop
PCIe 4.0 x4
Bus Interface
PCIe 3.0 x16
Clock Speeds
1923 MHz
Base Clock
-
2321 MHz
Boost Clock
-
2000 MHz
Memory Clock
1375 MHz
Memory
4GB
Memory Size
2GB
GDDR6
Memory Type
GDDR5
64bit
Memory Bus
256bit
128.0GB/s
Bandwidth
176.0GB/s
Render Config
12
Compute Units
28
768
Shading Units
1792
48
TMUs
112
32
ROPs
32
12
RT Cores
-
128 KB per Array
L1 Cache
16 KB (per CU)
1024 KB
L2 Cache
512 KB
16 MB
L3 Cache
-
Theoretical Performance
74.27 GPixel/s
Pixel Rate
29.38 GPixel/s
111.4 GTexel/s
Texture Rate
102.8 GTexel/s
7.130 TFLOPS
FP16 (half)
3.290 TFLOPS
3.565 TFLOPS
FP32 (float)
3.290 TFLOPS
222.8 GFLOPS
FP64 (double)
205.6 GFLOPS
Board Design
53W
TDP
190W
250 W
Suggested PSU
450 W
1x HDMI 2.1
1x DisplayPort 1.4a
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
None
Power Connectors
2x 6-pin
Graphics Processor
Navi 24
GPU Name
Tonga
Navi 24 XL
(215-135000046)
GPU Variant
Tonga PRO
(215-0851128)
RDNA 2.0
Architecture
GCN 3.0
TSMC
Foundry
TSMC
6 nm
Process Size
28 nm
5.4 billion
Transistors
5 billion
107 mm²
Die Size
366 mm²
Graphics Features
12 Ultimate (12_2)
DirectX
12 (12_0)
4.6
OpenGL
4.6
2.2
OpenCL
2.1
1.3
Vulkan
1.2.170
6.7
Shader Model
6.5
