Radeon R9 285 and Radeon RX 6600 XT - video card comparison
Passmark - benchmark score Radeon R9 285 vs Radeon RX 6600 XT
Radeon R9 285
6880
Radeon RX 6600 XT
16985
Radeon R9 285
Radeon RX 6600 XT
Architecture
GCN 3.0 (2014−2017)
Navi / RDNA2 (2020−2022)
GPU code name
Tonga
Navi 23
Market segment
Desktop
Desktop
Release date
September 2014
July 2021
Interface
PCIe 3.0 x16
PCIe 4.0 x8
Supplementary power connectors
2x 6-pin
1x 8-pin
Boost clock speed
-
2589 MHz
Core clock speed
918 MHz
1968 MHz
Floating-point performance
3,290 gflops
-
Manufacturing process technology
28 nm
7 nm
Number of transistors
5,000 million
11,060 million
Pipelines / CUDA cores
1792
2048
Power consumption (TDP)
190 Watt
160 (TGP) Watt
Texture fill rate
102.8
331.4
Memory type
GDDR5
GDDR6
Maximum RAM amount
2 GB
8 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
5.5 GB/s
16000 MHz
Memory bandwidth
176.0 GB/s
256.0 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
1x HDMI, 2x DisplayPort
HDMI
+
+
DirectX
12 (12_0)
12.0 Ultimate (12_2)
OpenCL
2.1
2.1
OpenGL
4.6
4.6
Shader Model
6.5
6.5
Vulkan
1.2.170
1.2