AMD Radeon 680M vs AMD Radeon RX 455 OEM
GPU Specs Compare
Graphics Card
Release Date
Jan 2022
Jun 2016
Generation
Navi II IGP
Arctic Islands
Type
Integrated
Desktop
Bus Interface
PCIe 4.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
2000 MHz
-
Boost Clock
2200 MHz
-
Memory Clock
System Shared
1625 MHz
Memory
Memory Size
System Shared
2GB
Memory Type
System Shared
GDDR5
Memory Bus
System Shared
128bit
Bandwidth
System Dependent
104.0GB/s
Render Config
Compute Units
12
12
Shading Units
768
768
TMUs
48
48
ROPs
32
16
RT Cores
12
-
L1 Cache
128 KB per Array
16 KB (per CU)
L2 Cache
2 MB
256 KB
Theoretical Performance
Pixel Rate
70.40 GPixel/s
16.80 GPixel/s
Texture Rate
105.6 GTexel/s
50.40 GTexel/s
FP16 (half)
6.758 TFLOPS
-
FP32 (float)
3.379 TFLOPS
1.613 TFLOPS
FP64 (double)
211.2 GFLOPS
100.8 GFLOPS
Graphics Processor
GPU Name
Rembrandt
Tobago
Architecture
RDNA 2.0
GCN 2.0
Foundry
TSMC
TSMC
Process Size
6 nm
28 nm
Transistors
13.1 billion
2.08 billion
Die Size
208 mm²
160 mm²
GPU Variant
-
Tobago PRO(215-0875010)
Board Design
TDP
50W
100W
Outputs
Portable Device Dependent
1x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
1x 6-pin
Suggested PSU
-
300 W
Graphics Features
DirectX
12 Ultimate (12_2)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
2.0
2.0
Vulkan
1.3
1.2
Shader Model
6.7
6.3