AMD Radeon RX 6750 XT vs AMD Radeon RX 640 Mobile
GPU Specs Compare
Graphics Card
Release Date
Mar 2022
May 2019
Generation
Navi II
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x8
Clock Speeds
Base Clock
2150 MHz
1082 MHz
Boost Clock
2600 MHz
1218 MHz
Memory Clock
2250 MHz
1500 MHz
Memory
Memory Size
12GB
2GB
Memory Type
GDDR6
GDDR5
Memory Bus
192bit
64bit
Bandwidth
432.0GB/s
48.00GB/s
Render Config
Compute Units
40
10
Shading Units
2560
640
TMUs
160
40
ROPs
64
16
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
19.49 GPixel/s
Texture Rate
416.0 GTexel/s
48.72 GTexel/s
FP16 (half)
26.62 TFLOPS
1.559 TFLOPS
FP32 (float)
13.31 TFLOPS
1.559 TFLOPS
FP64 (double)
832.0 GFLOPS
97.44 GFLOPS
Graphics Processor
GPU Name
Navi 22
Polaris 23
GPU Variant
Navi 22 KXT(215-127000144)
Polaris 23 XT
Architecture
RDNA 2.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
7 nm
14 nm
Transistors
17.2 billion
2.2 billion
Die Size
335 mm²
103 mm²
Board Design
TDP
250W
50W
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
2.1
Vulkan
1.3
1.2
Shader Model
6.5
6.4