Radeon R9 270X and HD Graphics 620 - video card comparison
Passmark - benchmark score Radeon R9 270X vs HD Graphics 620
Radeon R9 270X
5036
HD Graphics 620
963
Radeon R9 270X
HD Graphics 620
Architecture
GCN (2011−2017)
Gen. 9.5 Kaby Lake (2015−2017)
GPU code name
Curacao XT
Kaby-Lake GT2
Market segment
Desktop
Laptop
Release date
October 2013
August 2016
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x1
Supplementary power connectors
2 x 6-pin
-
Boost clock speed
1050 MHz
1050 MHz
Core clock speed
-
300 MHz
Floating-point performance
2,688 gflops
403.2 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
2,800 million
189 million
Pipelines / CUDA cores
1280
24
Power consumption (TDP)
180 Watt
15 Watt
Texture fill rate
84.00
25.20
Memory type
GDDR5
DDR3L/LPDDR3/LPDDR4
Maximum RAM amount
4 GB
32 GB
Memory bus width
256 Bit
64/128 Bit
Memory clock speed
-
System Shared
Memory bandwidth
179.2 GB/s
-
Shared memory
-
+
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
No outputs
Eyefinity
+
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
12 (12_1)
Mantle
-
-
OpenCL
1.2
2.1
OpenGL
4.6
4.6
Shader Model
5.1
6.4
Vulkan
+
+
AppAcceleration
+
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
Quick Sync
-
+
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-