Radeon HD 4870 and UHD Graphics 620 - video card comparison
Passmark - benchmark score Radeon HD 4870 vs UHD Graphics 620
Radeon HD 4870
1411
UHD Graphics 620
1061
Radeon HD 4870
UHD Graphics 620
Architecture
TeraScale (2005−2013)
Gen. 9.5 (2017)
GPU code name
RV770
Kaby-Lake-Refresh GT2
Market segment
Desktop
Laptop
Release date
June 2008
September 2017
Interface
PCIe 2.0 x16
PCIe 3.0 x1
Supplementary power connectors
2x 6-pin
-
Boost clock speed
-
1150 MHz
Core clock speed
750 MHz
300 MHz
Floating-point performance
1,200.0 gflops
-
Manufacturing process technology
55 nm
14 nm
Number of transistors
956 million
189 million
Pipelines / CUDA cores
800
24
Power consumption (TDP)
150 Watt
15 Watt
Texture fill rate
30.00
27.60
Memory type
GDDR5
LPDDR3/DDR4
Maximum RAM amount
1 GB
32 GB
Memory bus width
256 Bit
System Shared
Memory clock speed
3600 MHz
System Shared
Memory bandwidth
115.2 GB/s
-
Shared memory
-
+
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
12 (12_1)
OpenCL
1.1
2.1
OpenGL
3.3
4.6
Shader Model
4.1
6.4
Vulkan
N/A
1.1.103
Quick Sync
-
+