Radeon R9 390X and Radeon R7 265 - video card comparison
Radeon R9 390X
Radeon R7 265
Architecture
GCN (2011−2017)
GCN 1.0 (2012−2020)
GPU code name
Grenada XT
Pitcairn
Market segment
Desktop
Desktop
Release date
June 2015
February 2014
Bus support
PCIe 3.0
PCIe 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1 x 6-pin, 1 x 8-pin
1 x 6-pin
Bridgeless CrossFire
1
-
Boost clock speed
1050 MHz
925 MHz
Floating-point performance
5,914 gflops
1,894 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
2,800 million
Pipelines / CUDA cores
2816
1024
Power consumption (TDP)
275 Watt
150 Watt
Texture fill rate
184.8
59.20
Memory type
GDDR5
GDDR5
Maximum RAM amount
0 MB
4 GB
Memory bus width
512 Bit
256 Bit
Memory clock speed
1050 MHz
1400 MHz
Memory bandwidth
384 GB/s
179.2 GB/s
High bandwidth memory (HBM)
-
-
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
Eyefinity
+
1
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
+
-
DirectX
DirectX® 12
DirectX® 12
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
-
-