AMD Radeon RX 6600M vs AMD Radeon RX 580 OEM
GPU Specs Compare
Graphics Card
Release Date
May 2021
Jun 2016
Generation
Mobility Radeon
Polaris
Type
Mobile
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
2068 MHz
1120 MHz
Boost Clock
2416 MHz
1266 MHz
Memory Clock
1750 MHz
2000 MHz
Memory
Memory Size
8GB
8GB
Memory Type
GDDR6
GDDR5
Memory Bus
128bit
256bit
Bandwidth
224.0GB/s
256.0GB/s
Render Config
Compute Units
28
36
Shading Units
1792
2304
TMUs
112
144
ROPs
64
32
RT Cores
28
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
2 MB
L3 Cache
32 MB
-
Theoretical Performance
Pixel Rate
154.6 GPixel/s
40.51 GPixel/s
Texture Rate
270.6 GTexel/s
182.3 GTexel/s
FP16 (half)
17.32 TFLOPS
5.834 TFLOPS
FP32 (float)
8.659 TFLOPS
5.834 TFLOPS
FP64 (double)
541.2 GFLOPS
364.6 GFLOPS
Graphics Processor
GPU Name
Navi 23
Ellesmere
Architecture
RDNA 2.0
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
7 nm
14 nm
Transistors
11.06 billion
5.7 billion
Die Size
237 mm²
232 mm²
GPU Variant
-
Polaris 10 XT(215-0876184)
Board Design
TDP
100W
150W
Outputs
No outputs
1x HDMI 2.0b3x DisplayPort 1.4a
Power Connectors
None
1x 6-pin
Suggested PSU
-
450 W
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.1
2.1
Vulkan
1.3
1.2
Shader Model
6.5
6.4