AMD Radeon RX 550 Mobile vs AMD Radeon RX 6900 XT
GPU · Specs Compare
Graphics Card
Release Date
Jul 2017
Oct 2020
Generation
Mobility Radeon
Navi II
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x8
PCIe 4.0 x16
Clock Speeds
Base Clock
1100 MHz
1825 MHz
Boost Clock
1287 MHz
2250 MHz
Memory Clock
1500 MHz
2000 MHz
Memory
Memory Size
2GB
16GB
Memory Type
GDDR5
GDDR6
Memory Bus
128bit
256bit
Bandwidth
96.00GB/s
512.0GB/s
Render Config
Compute Units
10
80
Shading Units
640
5120
TMUs
40
320
ROPs
16
128
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
512 KB
4 MB
RT Cores
—
80
L3 Cache
—
128 MB
Theoretical Performance
Pixel Rate
20.59 GPixel/s
288.0 GPixel/s
Texture Rate
51.48 GTexel/s
720.0 GTexel/s
FP16 (half)
1.647 TFLOPS
46.08 TFLOPS
FP32 (float)
1.647 TFLOPS
23.04 TFLOPS
FP64 (double)
103.0 GFLOPS
1440.0 GFLOPS
Graphics Processor
GPU Name
Lexa
Navi 21
GPU Variant
Lexa PRO(215-0904018)
Navi 21 XTX(215-121000167)
Architecture
GCN 4.0
RDNA 2.0
Foundry
GlobalFoundries
TSMC
Process Size
14 nm
7 nm
Transistors
2.2 billion
26.8 billion
Die Size
103 mm²
520 mm²
Board Design
TDP
50W
300W
Outputs
No outputs
1x HDMI 2.12x DisplayPort 1.4a1x USB Type-C
Power Connectors
None
2x 8-pin
Suggested PSU
—
700 W
Graphics Features
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
2.1
2.1
Vulkan
1.2
1.4
Shader Model
6.4
6.8
Benchmark
3DMark Time Spy
—
20,764
▲ Specs Compare
Data sourced from official specifications and benchmark tests.