Radeon HD 7850 and Radeon R5 M255 - video card comparison
Passmark - benchmark score Radeon HD 7850 vs Radeon R5 M255
Radeon HD 7850
3976
Radeon R5 M255
550
Radeon HD 7850
Radeon R5 M255
Architecture
GCN 1.0 (2012−2020)
GCN (2011−2017)
GPU code name
Pitcairn
Topaz Pro / Sun
Market segment
Desktop
Laptop
Release date
March 2012
May 2014
Bus support
PCIe 2.1 x16
PCIe 3.0 x8
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Supplementary power connectors
1x 6-pin
-
Boost clock speed
1000 MHz
940 MHz
Compute units
-
5
Core clock speed
-
940 MHz
Floating-point performance
1,761 gflops
721.9 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
1,550 million
Pipelines / CUDA cores
1024
320
Power consumption (TDP)
130 Watt
-
Texture fill rate
55.04
22.56
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
64 Bit
Memory clock speed
1200 MHz
1000 MHz
Memory bandwidth
153.6 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
+
HDMI
+
-
DisplayPort support
-
-
DirectX
12
DirectX® 11
Mantle
-
+
OpenCL
1.2
Not Listed
OpenGL
4.6
4.4
Shader Model
5.1
6.3
Vulkan
+
-
AppAcceleration
-
+
CrossFire
1
-
DualGraphics
-
1
Enduro
-
-
FreeSync
1
-
HD3D
-
+
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
-
+