Radeon R9 390 and Radeon RX 6800 - video card comparison
Passmark - benchmark score Radeon R9 390 vs Radeon RX 6800
Radeon R9 390
9182
Radeon RX 6800
22945
Radeon R9 390
Radeon RX 6800
Architecture
GCN 2.0 (2013−2017)
Navi / RDNA2 (2020−2022)
GPU code name
Grenada
Navi 21
Market segment
Desktop
Desktop
Release date
June 2015
November 2020
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 4.0 x16
Supplementary power connectors
1 x 6-pin, 1 x 8-pin
2x 8-pin
Bridgeless CrossFire
1
-
Boost clock speed
1000 MHz
2105 MHz
Core clock speed
-
1815 MHz
Floating-point performance
5,120 gflops
-
Manufacturing process technology
28 nm
7 nm
Number of transistors
6,200 million
26,800 million
Pipelines / CUDA cores
2560
3840
Power consumption (TDP)
275 Watt
250 Watt
Texture fill rate
160.0
505.2
Memory type
GDDR5
GDDR6
Maximum RAM amount
0 MB
16 GB
Memory bus width
512 Bit
256 Bit
Memory clock speed
1000 MHz
16000 MHz
Memory bandwidth
384 GB/s
512.0 GB/s
High bandwidth memory (HBM)
-
-
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x HDMI, 2x DisplayPort, 1x USB Type-C
Eyefinity
1
-
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
+
-
DirectX
DirectX® 12
12 Ultimate (12_2)
Mantle
+
-
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.3
6.5
Vulkan
+
1.2
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
+
-
VCE
+
-
ZeroCore
-
-