Radeon R9 390 and FirePro V7770 - video card comparison
Radeon R9 390
FirePro V7770
Architecture
GCN 2.0 (2013−2017)
TeraScale (2005−2013)
GPU code name
Grenada
RV770
Market segment
Desktop
Workstation
Release date
June 2015
2012
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1 x 6-pin, 1 x 8-pin
1x 6-pin
Bridgeless CrossFire
1
-
Boost clock speed
1000 MHz
-
Core clock speed
-
625 MHz
Floating-point performance
5,120 gflops
-
Manufacturing process technology
28 nm
55 nm
Number of transistors
6,200 million
956 million
Pipelines / CUDA cores
2560
800
Power consumption (TDP)
275 Watt
76 Watt
Texture fill rate
160.0
25.00
Memory type
GDDR5
GDDR4
Maximum RAM amount
0 MB
1 GB
Memory bus width
512 Bit
128 Bit
Memory clock speed
1000 MHz
2.1 GB/s
Memory bandwidth
384 GB/s
33.6 GB/s
High bandwidth memory (HBM)
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
10.1 (10_1)
Mantle
+
-
OpenCL
2.0
1.1
OpenGL
4.6
3.3
Shader Model
6.3
4.1
Vulkan
+
N/A
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
+
-
VCE
+
-
ZeroCore
-
-