Radeon R9 M390 and Radeon HD 7770 - video card comparison
Radeon R9 M390
Radeon HD 7770
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Pitcairn
Cape Verde
Market segment
Laptop
Desktop
Release date
June 2015
February 2012
Bus support
PCIe 3.0
-
Interface
-
PCIe 3.0 x16
Supplementary power connectors
-
1x 6-pin
Core clock speed
-
1000 MHz
Manufacturing process technology
28 nm
28 nm
Number of transistors
5000 Million
1,500 million
Pipelines / CUDA cores
1024
640
Power consumption (TDP)
-
80 Watt
Texture fill rate
-
40.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
-
4500 MHz
Memory bandwidth
-
72 GB/s
Shared memory
-
-
Display Connectors
-
1x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
1
+
HDMI
-
+
DirectX
DirectX® 12
12 (11_1)
Mantle
+
-
OpenCL
Not Listed
1.2
OpenGL
4.4
4.6
Shader Model
-
5.1
Vulkan
-
1.2.131
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-