GeForce GT 820M and Radeon R5 M255 - video card comparison
Passmark - benchmark score GeForce GT 820M vs Radeon R5 M255
GeForce GT 820M
584
Radeon R5 M255
550
GeForce GT 820M
Radeon R5 M255
Architecture
Fermi 2.0 (2010−2014)
GCN (2011−2017)
GPU code name
GF117
Topaz Pro / Sun
Market segment
Desktop
Laptop
Release date
November 2013
May 2014
Bus support
-
PCIe 3.0 x8
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Boost clock speed
-
940 MHz
Compute units
-
5
Core clock speed
775 MHz
940 MHz
Floating-point performance
297.6 gflops
721.9 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
585 million
1,550 million
Pipelines / CUDA cores
96
320
Power consumption (TDP)
15 Watt
-
Texture fill rate
12.40
22.56
Memory type
DDR3
DDR3
Maximum RAM amount
1 GB
4 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
1800 MHz
1000 MHz
Memory bandwidth
14.4 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
-
+
DirectX
12 (11_0)
DirectX® 11
CUDA
2.1
-
Mantle
-
+
OpenCL
1.1
Not Listed
OpenGL
4.6
4.4
Shader Model
5.1
6.3
Vulkan
N/A
-
AppAcceleration
-
+
DualGraphics
-
1
Enduro
-
-
HD3D
-
+
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
-
+