GPU Comparison
RADEON
AMD Radeon 550X
CORE STATE
Lexa
VRAM
2 GB
CLOCK SPEED
1218 MHz
TDP
50 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2019
VS
RADEON
Radeon 660M
CORE STATE
Rembrandt
VRAM
System Shared
CLOCK SPEED
1900 MHz
TDP
40 W
BUS WIDTH
System Shared
ARCHITECTURE
RDNA 2.0
PROCESS
6 nm
LAUNCH DATE
2022
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
550X
660M
Core Specs
Shading Units
512
384
-25.0%
Shaders
512
384
-25.0%
TMUs
32
24
-25.0%
ROPs
16
16
0.0%
Compute Units
8
6
-25.0%
Clocks
Base Clock
1082 MHz
1500 MHz
Boost Clock
1218 MHz
1900 MHz
Memory Clock
1750 MHz
7 Gbps effective
System Shared
Memory
Memory Size
2 GB
System Shared
VRAM (MB)
2,048
—
Memory Type
GDDR5
System Shared
Memory Bus
128 bit
System Shared
Bandwidth
112.0 GB/s
System Dependent
Cache
L1 Cache
16 KB (per CU)
128 KB per Array
L2 Cache
512 KB
2 MB
L0 Cache
—
32 KB per WGP
Performance
Pixel Rate
19.49 GPixel/s
30.40 GPixel/s
Texture Rate
38.98 GTexel/s
45.60 GTexel/s
FP32 (TFLOPS)
1,247.2 GFLOPS
1,459.2 GFLOPS
FP64 (TFLOPS)
77.95 GFLOPS (1:16)
91.20 GFLOPS (1:16)
FP16 (TFLOPS)
1,247.2 GFLOPS (1:1)
2.918 TFLOPS (2:1)
AI/RT
RT Cores
—
6
Power
TDP
50 W
40 W
TDP (W)
50
40
-20.0%
Suggested PSU
250 W
—
Power Connectors
None
None
Architecture
Architecture
GCN 4.0
RDNA 2.0
GPU Name
Lexa
Rembrandt
Generation
Polaris
(RX 500X)
Navi II IGP
(Rembrandt Mobile)
Process Size
14 nm
6 nm
Transistors
2,200 million
13,100 million
Die Size
103 mm²
208 mm²
Foundry
GlobalFoundries
TSMC
Density
21.4M / mm²
63.0M / mm²
API Support
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
Vulkan
1.3
1.4
OpenCL
2.1
2.0
Shader Model
6.7
6.8
Physical
Slot Width
Dual-slot
IGP
Length
145 mm
5.7 inches
—
Outputs
1x DVI1x HDMI 2.0b1x DisplayPort 1.4a
Portable Device Dependent
Bus Interface
PCIe 3.0 x8
PCIe 4.0 x8
Other
Production
End-of-life
End-of-life
Predecessor
Polaris
Vega II IGP
Successor
Vega
Navi III IGP