Radeon R9 270X and GeForce GT 620 - video card comparison
Passmark - benchmark score Radeon R9 270X vs GeForce GT 620
Radeon R9 270X
5036
GeForce GT 620
388
Radeon R9 270X
GeForce GT 620
Architecture
GCN (2011−2017)
Fermi (2010−2014)
GPU code name
Curacao XT
GF108
Market segment
Desktop
Desktop
Release date
October 2013
May 2012
Bus support
PCIe 3.0
PCI Express 2.0
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
2 x 6-pin
None
Boost clock speed
1050 MHz
-
Core clock speed
-
700 MHz
CUDA cores
-
96
Floating-point performance
2,688 gflops
268.8 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
2,800 million
585 million
Pipelines / CUDA cores
1280
96
Power consumption (TDP)
180 Watt
49 Watt
Maximum GPU temperature
-
98 °C
Texture fill rate
84.00
11.2 billion/sec
Memory type
GDDR5
DDR3
Maximum RAM amount
4 GB
1 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
-
1.8 GB/s
Memory bandwidth
179.2 GB/s
14.4 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
Dual Link DVI-I, HDMI, VGA
Multi monitor support
-
+
Eyefinity
+
-
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
2048x1536
DisplayPort support
+
-
Audio input for HDMI
-
Internal
DirectX
DirectX® 12
12 (11_0)
CUDA
-
+
Mantle
-
-
OpenCL
1.2
1.1
OpenGL
4.6
4.2
Shader Model
5.1
5.1
Vulkan
+
N/A
3D Blu-Ray
-
+
AppAcceleration
+
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-