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
RADEON
Radeon RX 9070 GRE
CORE STATE
Navi 48
VRAM
12 GB
CLOCK SPEED
2790 MHz
TDP
220 W
BUS WIDTH
192 bit
ARCHITECTURE
RDNA 4.0
PROCESS
4 nm
LAUNCH DATE
2025
PERFORMANCE BENCHMARKS
geekbench_metal
geekbench_opencl
geekbench_vulkan
DETAILED SPECIFICATIONS
SPECIFICATION
Pro 555X
RX 9070 GRE
Core Specs
Shading Units
768
3,072
+300.0%
Shaders
768
3,072
+300.0%
TMUs
48
192
+300.0%
ROPs
16
96
+500.0%
Compute Units
12
48
+300.0%
Clocks
Base Clock
—
1420 MHz
Boost Clock
—
2790 MHz
GPU Clock
907 MHz
—
Game Clock
—
2220 MHz
Memory Clock
1470 MHz
5.9 Gbps effective
2250 MHz
18 Gbps effective
Memory
Memory Size
4 GB
12 GB
VRAM (MB)
4,096
12,288
+200.0%
Memory Type
GDDR5
GDDR6
Memory Bus
128 bit
192 bit
Bandwidth
94.08 GB/s
432.0 GB/s
Cache
L1 Cache
16 KB (per CU)
—
L2 Cache
1024 KB
8 MB
L3 Cache
—
48 MB
L0 Cache
—
32 KB per WGP
Performance
Pixel Rate
14.51 GPixel/s
267.8 GPixel/s
Texture Rate
43.54 GTexel/s
535.7 GTexel/s
FP32 (TFLOPS)
1,393.2 GFLOPS
34.28 TFLOPS
FP64 (TFLOPS)
87.07 GFLOPS (1:16)
1,071.4 GFLOPS (1:32)
FP16 (TFLOPS)
1,393.2 GFLOPS (1:1)
68.57 TFLOPS (2:1)
AI/RT
RT Cores
—
48
Matrix Cores
—
96
Power
TDP
75 W
220 W
TDP (W)
75
220
+193.3%
Suggested PSU
—
550 W
Power Connectors
None
2x 8-pin
Architecture
Architecture
GCN 4.0
RDNA 4.0
GPU Name
Polaris 21
Navi 48
Generation
Radeon Pro Mac
(500X Series)
Navi IV
(RX 9000)
Process Size
14 nm
4 nm
Transistors
3,000 million
53,900 million
Die Size
123 mm²
357 mm²
Foundry
GlobalFoundries
TSMC
Density
24.4M / mm²
151.0M / mm²
API Support
DirectX
12 (12_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
Vulkan
1.3
1.4
OpenCL
2.1
2.2
Shader Model
6.7
6.8
Physical
Slot Width
IGP
Dual-slot
Outputs
Portable Device Dependent
1x HDMI 2.1b3x DisplayPort 2.1a
Bus Interface
PCIe 3.0 x8
PCIe 5.0 x16
Other
Production
End-of-life
Active
Predecessor
—
Navi III