Radeon R9 390 and Radeon HD 6850 - video card comparison
Passmark - benchmark score Radeon R9 390 vs Radeon HD 6850
Radeon R9 390
9182
Radeon HD 6850
2030
Radeon R9 390
Radeon HD 6850
Architecture
GCN 2.0 (2013−2017)
TeraScale 2 (2009−2015)
GPU code name
Grenada
Barts
Market segment
Desktop
Desktop
Release date
June 2015
October 2010
Bus support
PCIe 3.0
AGP
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
-
Floating-point performance
5,120 gflops
1,488.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
6,200 million
1,700 million
Pipelines / CUDA cores
2560
960
Power consumption (TDP)
275 Watt
127 Watt
Texture fill rate
160.0
37.20
Memory type
GDDR5
GDDR5
Maximum RAM amount
0 MB
1 GB
Memory bus width
512 Bit
256 Bit
Memory clock speed
1000 MHz
-
Memory bandwidth
384 GB/s
128.0 GB/s
High bandwidth memory (HBM)
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x HDMI, 2x mini-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
4.4
Shader Model
6.3
5.0
Vulkan
+
-
AppAcceleration
-
-
CrossFire
1
1
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
+
-
VCE
+
-
ZeroCore
-
-