Radeon R9 390X and GeForce GTX 970M SLI - video card comparison
Radeon R9 390X
GeForce GTX 970M SLI
Architecture
GCN (2011−2017)
Maxwell (2014−2018)
GPU code name
Grenada XT
-
Market segment
Desktop
Laptop
Release date
June 2015
October 2014
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
1050 MHz
1038 MHz
Core clock speed
-
924 MHz
Floating-point performance
5,914 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
2x 5200 Million
Pipelines / CUDA cores
2816
2560
Power consumption (TDP)
275 Watt
162 Watt
Texture fill rate
184.8
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
0 MB
2x 6 GB
Memory bus width
512 Bit
2x 192 Bit
Memory clock speed
1050 MHz
5000 MHz
Memory bandwidth
384 GB/s
-
High bandwidth memory (HBM)
-
-
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
-
Eyefinity
+
-
Number of Eyefinity displays
6
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
12_1
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
-
-