Radeon R9 390 and Radeon HD 7870 XT - video card comparison
Passmark - benchmark score Radeon R9 390 vs Radeon HD 7870 XT
Radeon R9 390
9182
Radeon HD 7870 XT
4603
Radeon R9 390
Radeon HD 7870 XT
Architecture
GCN 2.0 (2013−2017)
GCN 1.0 (2012−2020)
GPU code name
Grenada
Tahiti
Market segment
Desktop
Desktop
Release date
June 2015
November 2012
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1 x 6-pin, 1 x 8-pin
2x 6-pin
Bridgeless CrossFire
1
-
Boost clock speed
1000 MHz
975 MHz
Core clock speed
-
925 MHz
Floating-point performance
5,120 gflops
2,995 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
4,313 million
Pipelines / CUDA cores
2560
1536
Power consumption (TDP)
275 Watt
185 Watt
Texture fill rate
160.0
93.60
Memory type
GDDR5
GDDR5
Maximum RAM amount
0 MB
2 GB
Memory bus width
512 Bit
256 Bit
Memory clock speed
1000 MHz
6000 MHz
Memory bandwidth
384 GB/s
192.0 GB/s
High bandwidth memory (HBM)
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
+
-
DirectX
DirectX® 12
12 (11_1)
Mantle
+
-
OpenCL
2.0
1.2
OpenGL
4.6
4.6
Shader Model
6.3
5.1
Vulkan
+
1.2.131
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
+
-
VCE
+
-
ZeroCore
-
-