Radeon R9 390 and GeForce GTX 775M - video card comparison
Passmark - benchmark score Radeon R9 390 vs GeForce GTX 775M
Radeon R9 390
9182
GeForce GTX 775M
3708
Radeon R9 390
GeForce GTX 775M
Architecture
GCN 2.0 (2013−2017)
Kepler (2012−2018)
GPU code name
Grenada
N13E-GTX-A2
Market segment
Desktop
Laptop
Release date
June 2015
September 2013
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
-
Supplementary power connectors
1 x 6-pin, 1 x 8-pin
-
SLI options
-
+
Bridgeless CrossFire
1
-
Boost clock speed
1000 MHz
-
Core clock speed
-
719 MHz
Floating-point performance
5,120 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
3540 Million
Pipelines / CUDA cores
2560
1344
Power consumption (TDP)
275 Watt
100 Watt
Texture fill rate
160.0
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
0 MB
4 GB
Memory bus width
512 Bit
256 Bit
Memory clock speed
1000 MHz
3600 MHz
Memory bandwidth
384 GB/s
-
High bandwidth memory (HBM)
-
-
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
-
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
11
CUDA
-
+
Mantle
+
-
OpenCL
2.0
-
OpenGL
4.6
-
Shader Model
6.3
-
Vulkan
+
-
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
Optimus
-
+
PowerTune
+
-
TrueAudio
+
-
VCE
+
-
ZeroCore
-
-