Radeon R9 285 and Radeon RX 640 - video card comparison
Passmark - benchmark score Radeon R9 285 vs Radeon RX 640
Radeon R9 285
6880
Radeon RX 640
2020
Radeon R9 285
Radeon RX 640
Architecture
GCN 3.0 (2014−2017)
Polaris (2016−2019)
GPU code name
Tonga
Polaris 12
Market segment
Desktop
Laptop
Release date
September 2014
August 2019
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
None
Boost clock speed
-
1218 MHz
Core clock speed
918 MHz
1218 MHz
Floating-point performance
3,290 gflops
-
Manufacturing process technology
28 nm
14 nm
Number of transistors
5,000 million
2,200 million
Pipelines / CUDA cores
1792
640
Power consumption (TDP)
190 Watt
50 Watt
Texture fill rate
102.8
38.98
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
5.5 GB/s
6000 MHz
Memory bandwidth
176.0 GB/s
112.0 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (12_0)
12 (12_0)
OpenCL
2.1
2.0
OpenGL
4.6
4.6
Shader Model
6.5
6.4
Vulkan
1.2.170
1.2.131
FreeSync
-
+