Radeon R9 390X and GeForce RTX 4080 Ti - video card comparison
Radeon R9 390X
GeForce RTX 4080 Ti
Architecture
GCN (2011−2017)
Ada Lovelace
GPU code name
Grenada XT
AD102
Market segment
Desktop
Desktop
Release date
June 2015
2023
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
1x 16-pin
Bridgeless CrossFire
1
-
Boost clock speed
1050 MHz
2610 MHz
Floating-point performance
5,914 gflops
-
Manufacturing process technology
28 nm
5 nm
Number of transistors
6,200 million
76,300 million
Pipelines / CUDA cores
2816
14080
Power consumption (TDP)
275 Watt
400 Watt
Texture fill rate
184.8
1,148
Memory type
GDDR5
GDDR6X
Maximum RAM amount
0 MB
16 GB
Memory bus width
512 Bit
256 Bit
Memory clock speed
1050 MHz
21.2 GB/s
Memory bandwidth
384 GB/s
678.4 GB/s
High bandwidth memory (HBM)
-
-
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x HDMI 2.1, 3x DisplayPort 1.4a
Eyefinity
+
-
Number of Eyefinity displays
6
-
HDMI
+
+
DisplayPort support
+
-
DirectX
DirectX® 12
12 Ultimate (12_2)
CUDA
-
8.9
Mantle
+
-
OpenCL
2.0
3.0
OpenGL
4.6
4.6
Shader Model
6.3
6.7
Vulkan
+
1.3
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
+
-
TrueAudio
+
-
VCE
+
-
ZeroCore
-
-