AMD Radeon RX 6800M vs AMD Radeon R9 390X
GPU Specs Compare
Graphics Card
Release Date
May 2021
Jun 2015
Generation
Mobility Radeon
Pirate Islands
Type
Mobile
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
2116 MHz
-
Boost Clock
2390 MHz
-
Memory Clock
2000 MHz
1500 MHz
Memory
Memory Size
12GB
8GB
Memory Type
GDDR6
GDDR5
Memory Bus
192bit
512bit
Bandwidth
384.0GB/s
384.0GB/s
Render Config
Compute Units
40
44
Shading Units
2560
2816
TMUs
160
176
ROPs
64
64
RT Cores
40
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
3 MB
1024 KB
L3 Cache
96 MB
-
Theoretical Performance
Pixel Rate
153.0 GPixel/s
67.20 GPixel/s
Texture Rate
382.4 GTexel/s
184.8 GTexel/s
FP16 (half)
24.47 TFLOPS
-
FP32 (float)
12.24 TFLOPS
5.914 TFLOPS
FP64 (double)
764.8 GFLOPS
739.2 GFLOPS
Graphics Processor
GPU Name
Navi 22
Grenada
GPU Variant
Navi 22 XTM
Grenada XT(215-0880004)
Architecture
RDNA 2.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
17.2 billion
6.2 billion
Die Size
335 mm²
438 mm²
Board Design
TDP
145W
275W
Outputs
No outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
1x 6-pin + 1x 8-pin
Suggested PSU
-
600 W
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.0
Vulkan
1.3
1.2
Shader Model
6.5
6.3
📊 Benchmark
3DMark Time Spy
11,498
-
3DMark Time Spy Extreme
5,418
-
3DMark Speed Way
2,096
-
Blender
1,568
-