GPU Comparison
RADEON
AMD 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
VS
GEFORCE
RTX A400
CORE STATE
GA107
VRAM
4 GB
CLOCK SPEED
1762 MHz
TDP
50 W
BUS WIDTH
64 bit
ARCHITECTURE
Ampere
PROCESS
8 nm
LAUNCH DATE
2024
PERFORMANCE BENCHMARKS
geekbench_metal
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
Pro 555X
RTX A400
Core Specs
Shading Units
768
768
0.0%
Shaders
768
768
0.0%
TMUs
48
24
-50.0%
ROPs
16
16
0.0%
Compute Units
12
—
SM Count
—
6
Clocks
Base Clock
—
1417 MHz
Boost Clock
—
1762 MHz
GPU Clock
907 MHz
—
Memory Clock
1470 MHz
5.9 Gbps effective
1500 MHz
12 Gbps effective
Memory
Memory Size
4 GB
4 GB
VRAM (MB)
4,096
4,096
0.0%
Memory Type
GDDR5
GDDR6
Memory Bus
128 bit
64 bit
Bandwidth
94.08 GB/s
96.00 GB/s
Cache
L1 Cache
16 KB (per CU)
128 KB (per SM)
L2 Cache
1024 KB
2 MB
Performance
Pixel Rate
14.51 GPixel/s
28.19 GPixel/s
Texture Rate
43.54 GTexel/s
42.29 GTexel/s
FP32 (TFLOPS)
1,393.2 GFLOPS
2.706 TFLOPS
FP64 (TFLOPS)
87.07 GFLOPS (1:16)
42.29 GFLOPS (1:64)
FP16 (TFLOPS)
1,393.2 GFLOPS (1:1)
2.706 TFLOPS (1:1)
AI/RT
RT Cores
—
6
Tensor Cores
—
24
Power
TDP
75 W
50 W
TDP (W)
75
50
-33.3%
Suggested PSU
—
250 W
Power Connectors
None
None
Architecture
Architecture
GCN 4.0
Ampere
GPU Name
Polaris 21
GA107
Generation
Radeon Pro Mac
(500X Series)
Workstation Ampere
(Ax000)
Process Size
14 nm
8 nm
Transistors
3,000 million
8,700 million
Die Size
123 mm²
200 mm²
Foundry
GlobalFoundries
Samsung
Density
24.4M / mm²
43.5M / mm²
API Support
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
Vulkan
1.3
1.4
OpenCL
2.1
3.0
CUDA
—
8.6
Shader Model
6.7
6.8
Physical
Slot Width
IGP
Single-slot
Length
—
163 mm
6.4 inches
Height
—
69 mm
2.7 inches
Outputs
Portable Device Dependent
4x mini-DisplayPort 1.4a
Bus Interface
PCIe 3.0 x8
PCIe 4.0 x8
Other
Production
End-of-life
Active
Predecessor
—
Quadro Turing
Successor
—
Workstation Ada