AMD Radeon R9 285X vs AMD Radeon RX 6900 XTX
GPU Specs Compare
Graphics Card
Release Date
Unknown
Unknown
Generation
Volcanic Islands
Navi II
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Memory Clock
1375 MHz
2250 MHz
Base Clock
-
2075 MHz
Boost Clock
-
2435 MHz
Memory
Memory Size
3GB
16GB
Memory Type
GDDR5
GDDR6
Memory Bus
384bit
256bit
Bandwidth
264.0GB/s
576.0GB/s
Render Config
Compute Units
32
80
Shading Units
2048
5120
TMUs
128
320
ROPs
32
128
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
768 KB
4 MB
RT Cores
-
80
L3 Cache
-
128 MB
Theoretical Performance
Pixel Rate
32.06 GPixel/s
311.7 GPixel/s
Texture Rate
128.3 GTexel/s
779.2 GTexel/s
FP32 (float)
4.104 TFLOPS
24.93 TFLOPS
FP16 (half)
-
49.87 TFLOPS
FP64 (double)
-
1.558 TFLOPS
Graphics Processor
GPU Name
Tonga
Navi 21
GPU Variant
Tonga XT(215-0851313)
Navi 21 XTXH(215-121000247)
Architecture
GCN 3.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
7 nm
Transistors
5 billion
26.8 billion
Die Size
366 mm²
520 mm²
Board Design
TDP
200W
330W
Suggested PSU
550 W
700 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
Power Connectors
1x 6-pin + 1x 8-pin
2x 8-pin
Graphics Features
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.0
2.1
Vulkan
1.2
1.3
Shader Model
6.3
6.5