Radeon HD 3870 X2 and HD Graphics 620 - video card comparison
Passmark - benchmark score Radeon HD 3870 X2 vs HD Graphics 620
Radeon HD 3870 X2
729
HD Graphics 620
963
Radeon HD 3870 X2
HD Graphics 620
Architecture
TeraScale (2005−2013)
Gen. 9.5 Kaby Lake (2015−2017)
GPU code name
R680
Kaby-Lake GT2
Market segment
Desktop
Laptop
Release date
January 2008
August 2016
Interface
PCIe 2.0 x16
PCIe 3.0 x1
Supplementary power connectors
1x 6-pin + 1x 8-pin
-
Boost clock speed
-
1050 MHz
Core clock speed
825 MHz
300 MHz
Floating-point performance
2x 528.0 gflops
403.2 gflops
Manufacturing process technology
55 nm
14 nm
Number of transistors
666 million
189 million
Pipelines / CUDA cores
320
24
Power consumption (TDP)
165 Watt
15 Watt
Texture fill rate
13.20
25.20
Memory type
GDDR3
DDR3L/LPDDR3/LPDDR4
Maximum RAM amount
512 MB
32 GB
Memory bus width
256 Bit
64/128 Bit
Memory clock speed
1802 MHz
System Shared
Memory bandwidth
57.66 GB/s
-
Shared memory
-
+
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
12 (12_1)
OpenCL
N/A
2.1
OpenGL
3.3
4.6
Shader Model
4.1
6.4
Vulkan
N/A
+
Quick Sync
-
+