Radeon R9 390 and Radeon HD 7750 - video card comparison
Passmark - benchmark score Radeon R9 390 vs Radeon HD 7750
Radeon R9 390
9182
Radeon HD 7750
1754
Radeon R9 390
Radeon HD 7750
Architecture
GCN 2.0 (2013−2017)
GCN 1.0 (2012−2020)
GPU code name
Grenada
Cape Verde
Market segment
Desktop
Desktop
Release date
June 2015
February 2012
Bus support
PCIe 3.0
PCIe 2.1 x16
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1 x 6-pin, 1 x 8-pin
None
Bridgeless CrossFire
1
-
Boost clock speed
1000 MHz
800 MHz
Floating-point performance
5,120 gflops
819.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
1,500 million
Pipelines / CUDA cores
2560
512
Power consumption (TDP)
275 Watt
75 Watt
Texture fill rate
160.0
25.60
Memory type
GDDR5
GDDR5
Maximum RAM amount
0 MB
1 GB
Memory bus width
512 Bit
128 Bit
Memory clock speed
1000 MHz
1125 MHz
Memory bandwidth
384 GB/s
72 GB/s
High bandwidth memory (HBM)
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x DisplayPort
Eyefinity
1
1
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
+
+
DirectX
DirectX® 12
DirectX® 11
Mantle
+
-
OpenCL
2.0
1.2
OpenGL
4.6
4.6
Shader Model
6.3
5.1
Vulkan
+
-
AppAcceleration
-
-
CrossFire
1
1
DDMA audio
+
-
Enduro
-
-
FreeSync
1
1
HD3D
-
-
PowerTune
+
-
TrueAudio
+
-
VCE
+
-
ZeroCore
-
-