Radeon HD 7870 XT and HD Graphics 620 - video card comparison
Passmark - benchmark score Radeon HD 7870 XT vs HD Graphics 620
Radeon HD 7870 XT
4603
HD Graphics 620
963
Radeon HD 7870 XT
HD Graphics 620
Architecture
GCN 1.0 (2012−2020)
Gen. 9.5 Kaby Lake (2015−2017)
GPU code name
Tahiti
Kaby-Lake GT2
Market segment
Desktop
Laptop
Release date
November 2012
August 2016
Interface
PCIe 3.0 x16
PCIe 3.0 x1
Supplementary power connectors
2x 6-pin
-
Boost clock speed
975 MHz
1050 MHz
Core clock speed
925 MHz
300 MHz
Floating-point performance
2,995 gflops
403.2 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
4,313 million
189 million
Pipelines / CUDA cores
1536
24
Power consumption (TDP)
185 Watt
15 Watt
Texture fill rate
93.60
25.20
Memory type
GDDR5
DDR3L/LPDDR3/LPDDR4
Maximum RAM amount
2 GB
32 GB
Memory bus width
256 Bit
64/128 Bit
Memory clock speed
6000 MHz
System Shared
Memory bandwidth
192.0 GB/s
-
Shared memory
-
+
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
HDMI
+
-
DirectX
12 (11_1)
12 (12_1)
OpenCL
1.2
2.1
OpenGL
4.6
4.6
Shader Model
5.1
6.4
Vulkan
1.2.131
+
Quick Sync
-
+