Radeon 660M vs P102-101

Primary details

GPU architecture, market segment, value for money and other general parameters compared.

Place in the ranking	not rated	572
Place by popularity	not in top-100	not in top-100
Power efficiency	no data	14.82
Architecture	Pascal (2016−2021)	RDNA 2.0 (2020−2025)
GPU code name	GP102	Rembrandt+
Market segment	Workstation	Laptop
Release date	2018 (8 years ago)	3 January 2023 (3 years ago)

Detailed specifications

General parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	3200	384
Core clock speed	1557 MHz	1500 MHz
Boost clock speed	1670 MHz	1900 MHz
Number of transistors	11,800 million	13,100 million
Manufacturing process technology	16 nm	6 nm
Power consumption (TDP)	250 Watt	40 Watt
Texture fill rate	334.0	45.60
Floating-point processing power	10.69 TFLOPS	1.459 TFLOPS
ROPs	80	16
TMUs	200	24
Ray Tracing Cores	no data	6
L0 Cache	no data	96 KB
L1 Cache	1.2 MB	128 KB
L2 Cache	2.5 MB	2 MB
L3 Cache	no data	8 MB

Form factor & compatibility

Information on compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop graphics cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

Interface	PCIe 3.0 x4	PCIe 4.0 x8
Length	267 mm	no data
Width	2-slot	no data
Supplementary power connectors	2x 8-pin	None

VRAM capacity and type

Parameters of VRAM installed: its type, size, bus, clock and resulting bandwidth. Integrated GPUs have no dedicated video RAM and use a shared part of system RAM.

Memory type	GDDR5	System Shared
Maximum RAM amount	10 GB	System Shared
Memory bus width	320 Bit	System Shared
Memory clock speed	2002 MHz	System Shared
Memory bandwidth	320.3 GB/s	no data
Shared memory	-	+

Connectivity and outputs

This section shows the types and number of video connectors on each GPU. The data applies specifically to desktop reference models (for example, NVIDIA’s Founders Edition). OEM partners often modify both the number and types of ports. On notebook GPUs, video‐output options are determined by the laptop’s design rather than the graphics chip itself.

Display Connectors

No outputs

Portable Device Dependent

API and SDK support

List of supported 3D and general-purpose computing APIs, including their specific versions.

DirectX	12 (12_1)	12 Ultimate (12_2)
Shader Model	6.7	6.7
OpenGL	4.6	4.6
OpenCL	3.0	2.0
Vulkan	1.3	1.3
CUDA	6.1	-

Pros & cons summary

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Chip lithography	16 nm	6 nm
Power consumption (TDP)	250 Watt	40 Watt