AMD Radeon RX 6750 XT vs AMD Radeon R9 M390X
GPU Specs Compare
Graphics Card
Release Date
Mar 2022
May 2015
Generation
Navi II
Crystal System
Type
Desktop
Mobile
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
2150 MHz
-
Boost Clock
2600 MHz
-
Memory Clock
2250 MHz
1250 MHz
Memory
Memory Size
12GB
4GB
Memory Type
GDDR6
GDDR5
Memory Bus
192bit
256bit
Bandwidth
432.0GB/s
160.0GB/s
Render Config
Compute Units
40
32
Shading Units
2560
2048
TMUs
160
128
ROPs
64
32
RT Cores
40
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
3 MB
512 KB
L3 Cache
96 MB
-
Theoretical Performance
Pixel Rate
166.4 GPixel/s
23.14 GPixel/s
Texture Rate
416.0 GTexel/s
92.54 GTexel/s
FP16 (half)
26.62 TFLOPS
2.961 TFLOPS
FP32 (float)
13.31 TFLOPS
2.961 TFLOPS
FP64 (double)
832.0 GFLOPS
185.1 GFLOPS
Graphics Processor
GPU Name
Navi 22
Amethyst
GPU Variant
Navi 22 KXT(215-127000144)
Amethyst XT
Architecture
RDNA 2.0
GCN 3.0
Foundry
TSMC
TSMC
Process Size
7 nm
28 nm
Transistors
17.2 billion
5 billion
Die Size
335 mm²
366 mm²
Board Design
TDP
250W
75W
Suggested PSU
600 W
-
Outputs
1x HDMI 2.13x DisplayPort 1.4a
No outputs
Power Connectors
1x 6-pin + 1x 8-pin
None
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