Radeon 680M
AMD Radeon 680M vs AMD Radeon 660M
GPU Comparison Result
Below are the results of a comparison of the characteristics and performance of the AMD Radeon 680M and AMD Radeon 660M video cards. This comparison will help you determine which one best suits your needs.
Basic
Label Name
AMD
AMD
Launch Date
January 2022
January 2022
Platform
Integrated
Integrated
Model Name
Radeon 680M
Radeon 660M
Generation
Navi II IGP
Rembrandt
Base Clock
2000MHz
1500MHz
Boost Clock
2200MHz
1900MHz
Shading Units
?
The most fundamental processing unit is the Streaming Processor (SP), where specific instructions and tasks are executed. GPUs perform parallel computing, which means multiple SPs work simultaneously to process tasks.
768
384
Transistors
13,100 million
13,100 million
RT Cores
12
6
Compute Units
12
6
TMUs
?
Texture Mapping Units (TMUs) serve as components of the GPU, which are capable of rotating, scaling, and distorting binary images, and then placing them as textures onto any plane of a given 3D model. This process is called texture mapping.
48
24
L1 Cache
128 KB per Array
128 KB per Array
L2 Cache
2MB
2MB
Bus Interface
PCIe 4.0 x8
PCIe 4.0 x8
Foundry
TSMC
TSMC
Process Size
6 nm
6 nm
Architecture
RDNA 2.0
RDNA 2.0
TDP
50W
15W
Memory Specifications
Memory Size
System Shared
System Shared
Memory Type
System Shared
System Shared
Memory Bus
?
The memory bus width refers to the number of bits of data that the video memory can transfer within a single clock cycle. The larger the bus width, the greater the amount of data that can be transmitted instantaneously, making it one of the crucial parameters of video memory. The memory bandwidth is calculated as: Memory Bandwidth = Memory Frequency x Memory Bus Width / 8. Therefore, when the memory frequencies are similar, the memory bus width will determine the size of the memory bandwidth.
System Shared
System Shared
Memory Clock
SystemShared
SystemShared
Bandwidth
?
Memory bandwidth refers to the data transfer rate between the graphics chip and the video memory. It is measured in bytes per second, and the formula to calculate it is: memory bandwidth = working frequency × memory bus width / 8 bits.
System Dependent
System Dependent
Theoretical Performance
Pixel Rate
?
Pixel fill rate refers to the number of pixels a graphics processing unit (GPU) can render per second, measured in MPixels/s (million pixels per second) or GPixels/s (billion pixels per second). It is the most commonly used metric to evaluate the pixel processing performance of a graphics card.
70.40 GPixel/s
30.40 GPixel/s
Texture Rate
?
Texture fill rate refers to the number of texture map elements (texels) that a GPU can map to pixels in a single second.
105.6 GTexel/s
45.60 GTexel/s
FP16 (half)
?
An important metric for measuring GPU performance is floating-point computing capability. Half-precision floating-point numbers (16-bit) are used for applications like machine learning, where lower precision is acceptable. Single-precision floating-point numbers (32-bit) are used for common multimedia and graphics processing tasks, while double-precision floating-point numbers (64-bit) are required for scientific computing that demands a wide numeric range and high accuracy.
6.758 TFLOPS
2.918 TFLOPS
FP64 (double)
?
An important metric for measuring GPU performance is floating-point computing capability. Double-precision floating-point numbers (64-bit) are required for scientific computing that demands a wide numeric range and high accuracy, while single-precision floating-point numbers (32-bit) are used for common multimedia and graphics processing tasks. Half-precision floating-point numbers (16-bit) are used for applications like machine learning, where lower precision is acceptable.
211.2 GFLOPS
91.20 GFLOPS
FP32 (float)
?
An important metric for measuring GPU performance is floating-point computing capability. Single-precision floating-point numbers (32-bit) are used for common multimedia and graphics processing tasks, while double-precision floating-point numbers (64-bit) are required for scientific computing that demands a wide numeric range and high accuracy. Half-precision floating-point numbers (16-bit) are used for applications like machine learning, where lower precision is acceptable.
3.245
TFlops
1.458
TFlops
Miscellaneous
Vulkan Version
?
Vulkan is a cross-platform graphics and compute API by Khronos Group, offering high performance and low CPU overhead. It lets developers control the GPU directly, reduces rendering overhead, and supports multi-threading and multi-core processors.
1.3
1.2
OpenCL Version
2.0
2.0
OpenGL
4.6
4.6
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
Power Connectors
None
None
Shader Model
6.7
6.5
ROPs
?
The Raster Operations Pipeline (ROPs) is primarily responsible for handling lighting and reflection calculations in games, as well as managing effects like anti-aliasing (AA), high resolution, smoke, and fire. The more demanding the anti-aliasing and lighting effects in a game, the higher the performance requirements for the ROPs; otherwise, it may result in a sharp drop in frame rate.
32
16
Advantages
Radeon 680M
- Higher Boost Clock: 2200MHz (2200MHz vs 1900MHz)
- More Shading Units: 768 (768 vs 384)
Radeon 660M
- Newer Launch Date: January 2022 (January 2022 vs January 2022)
FP32 (float)
Radeon 680M
+123%
3.245
TFlops
Radeon 660M
1.458
TFlops
3DMark Time Spy
Radeon 680M
+54%
2351
Radeon 660M
1526
Blender
Radeon 680M
+182%
254
Radeon 660M
90
SiliconCat Rating
668
Ranks 668 among all GPU on our website
938
Ranks 938 among all GPU on our website
Radeon 660M
