Radeon RX 6900 XT and Radeon R9 285 - video card comparison
Passmark - benchmark score Radeon RX 6900 XT vs Radeon R9 285
Radeon RX 6900 XT
27641
Radeon R9 285
6880
Radeon RX 6900 XT
Radeon R9 285
Architecture
Navi / RDNA2 (2020−2022)
GCN 3.0 (2014−2017)
GPU code name
Navi 21
Tonga
Market segment
Desktop
Desktop
Release date
December 2020
September 2014
Interface
PCIe 4.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 8-pin
2x 6-pin
Boost clock speed
2250 MHz
-
Core clock speed
1825 MHz
918 MHz
Floating-point performance
-
3,290 gflops
Manufacturing process technology
7 nm
28 nm
Number of transistors
26,800 million
5,000 million
Pipelines / CUDA cores
5120
1792
Power consumption (TDP)
300 Watt
190 Watt
Texture fill rate
720.0
102.8
Memory type
GDDR6
GDDR5
Maximum RAM amount
16 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
16000 MHz
5.5 GB/s
Memory bandwidth
512.0 GB/s
176.0 GB/s
Shared memory
-
-
Display Connectors
1x HDMI, 2x DisplayPort, 1x USB Type-C
2x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
HDMI
+
+
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenCL
2.1
2.1
OpenGL
4.6
4.6
Shader Model
6.5
6.5
Vulkan
1.2
1.2.170