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 Pro 555X
CORE STATE
Polaris 21
VRAM
4 GB
CLOCK SPEED
—
TDP
75 W
BUS WIDTH
128 bit
ARCHITECTURE
GCN 4.0
PROCESS
14 nm
LAUNCH DATE
2018
PERFORMANCE BENCHMARKS
geekbench_opencl
geekbench_metal
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
550X
Pro 555X
Core Specs
Shading Units
512
768
+50.0%
Shaders
512
768
+50.0%
TMUs
32
48
+50.0%
ROPs
16
16
0.0%
Compute Units
8
12
+50.0%
Clocks
Base Clock
1082 MHz
—
Boost Clock
1218 MHz
—
GPU Clock
—
907 MHz
Memory Clock
1750 MHz
7 Gbps effective
1470 MHz
5.9 Gbps effective
Memory
Memory Size
2 GB
4 GB
VRAM (MB)
2,048
4,096
+100.0%
Memory Type
GDDR5
GDDR5
Memory Bus
128 bit
128 bit
Bandwidth
112.0 GB/s
94.08 GB/s
Cache
L1 Cache
16 KB (per CU)
16 KB (per CU)
L2 Cache
512 KB
1024 KB
Performance
Pixel Rate
19.49 GPixel/s
14.51 GPixel/s
Texture Rate
38.98 GTexel/s
43.54 GTexel/s
FP32 (TFLOPS)
1,247.2 GFLOPS
1,393.2 GFLOPS
FP64 (TFLOPS)
77.95 GFLOPS (1:16)
87.07 GFLOPS (1:16)
FP16 (TFLOPS)
1,247.2 GFLOPS (1:1)
1,393.2 GFLOPS (1:1)
Power
TDP
50 W
75 W
TDP (W)
50
75
+50.0%
Suggested PSU
250 W
—
Power Connectors
None
None
Architecture
Architecture
GCN 4.0
GCN 4.0
GPU Name
Lexa
Polaris 21
Generation
Polaris
(RX 500X)
Radeon Pro Mac
(500X Series)
Process Size
14 nm
14 nm
Transistors
2,200 million
3,000 million
Die Size
103 mm²
123 mm²
Foundry
GlobalFoundries
GlobalFoundries
Density
21.4M / mm²
24.4M / mm²
API Support
DirectX
12 (12_0)
12 (12_0)
OpenGL
4.6
4.6
Vulkan
1.3
1.3
OpenCL
2.1
2.1
Shader Model
6.7
6.7
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 3.0 x8
Other
Production
End-of-life
End-of-life
Predecessor
Polaris
—
Successor
Vega
—