Radeon HD 4870 and Radeon RX 640 - video card comparison
Passmark - benchmark score Radeon HD 4870 vs Radeon RX 640
Radeon HD 4870
1411
Radeon RX 640
2020
Radeon HD 4870
Radeon RX 640
Architecture
TeraScale (2005−2013)
Polaris (2016−2019)
GPU code name
RV770
Polaris 12
Market segment
Desktop
Laptop
Release date
June 2008
August 2019
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
None
Boost clock speed
-
1218 MHz
Core clock speed
750 MHz
1218 MHz
Floating-point performance
1,200.0 gflops
-
Manufacturing process technology
55 nm
14 nm
Number of transistors
956 million
2,200 million
Pipelines / CUDA cores
800
640
Power consumption (TDP)
150 Watt
50 Watt
Texture fill rate
30.00
38.98
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
4 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
3600 MHz
6000 MHz
Memory bandwidth
115.2 GB/s
112.0 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
10.1 (10_1)
12 (12_0)
OpenCL
1.1
2.0
OpenGL
3.3
4.6
Shader Model
4.1
6.4
Vulkan
N/A
1.2.131
FreeSync
-
+