Radeon HD 8790M and Radeon 660M - video card comparison
Passmark - benchmark score Radeon HD 8790M vs Radeon 660M
Radeon HD 8790M
1344
Radeon 660M
6474
Radeon HD 8790M
Radeon 660M
Architecture
GCN (2011−2017)
RDNA 2 (2020−2022)
GPU code name
Mars XTX
RDNA 2 Rembrandt
Market segment
Laptop
Laptop
Release date
November 2012
January 2022
Interface
MXM-A (3.0)
PCIe 4.0 x8
Supplementary power connectors
None
None
Boost clock speed
900 MHz
1900 MHz
Core clock speed
850 MHz
-
Floating-point performance
691.2 gflops
-
Manufacturing process technology
28 nm
6 nm
Number of transistors
950 million
13,100 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
unknown
45 Watt
Texture fill rate
21.60
45.60
Memory type
GDDR5
System Shared
Maximum RAM amount
2 GB
System Shared
Memory bus width
128 Bit
System Shared
Memory clock speed
4500 MHz
System Shared
Memory bandwidth
64 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_1)
12 (12_1)
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.5
Vulkan
1.2.131
1.2