AMD Radeon R9 M390X vs AMD Radeon RX 6750 GRE
GPU · Specs Compare
Graphics Card
Release Date
May 2015
Oct 2023
Generation
Crystal System
Navi II
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Memory Clock
1250 MHz
2250 MHz
Base Clock
—
2321 MHz
Boost Clock
—
2581 MHz
Memory
Memory Size
4GB
12GB
Memory Type
GDDR5
GDDR6
Memory Bus
256bit
192bit
Bandwidth
160.0GB/s
432.0GB/s
Render Config
Compute Units
32
40
Shading Units
2048
2560
TMUs
128
160
ROPs
32
64
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
512 KB
3 MB
RT Cores
—
40
L3 Cache
—
96 MB
Theoretical Performance
Pixel Rate
23.14 GPixel/s
165.2 GPixel/s
Texture Rate
92.54 GTexel/s
413.0 GTexel/s
FP16 (half)
2.961 TFLOPS
26.43 TFLOPS
FP32 (float)
2.961 TFLOPS
13.21 TFLOPS
FP64 (double)
185.1 GFLOPS
825.9 GFLOPS
Graphics Processor
GPU Name
Amethyst
Navi 22
GPU Variant
Amethyst XT
Navi 22 KXT
Architecture
GCN 3.0
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
28 nm
7 nm
Transistors
5 billion
17.2 billion
Die Size
366 mm²
335 mm²
Board Design
TDP
75W
250W
Outputs
No outputs
1x HDMI 2.13x DisplayPort 1.4a
Power Connectors
None
1x 6-pin + 1x 8-pin
Suggested PSU
—
600 W
Graphics Features
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.0
2.1
Vulkan
1.2
1.3
Shader Model
6.3
6.7
▲ Specs Compare
Data sourced from official specifications and benchmark tests.