Radeon 660M vs RX 560D

Primary details

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

Place in the ranking	not rated	329
Place by popularity	not in top-100	not in top-100
Architecture	GCN 4.0 (2016−2020)	RDNA 2 (2020−2023)
GPU code name	Polaris 21	RDNA 2 Rembrandt
Market segment	Desktop	Laptop
Release date	4 July 2017 (7 years ago)	4 January 2022 (2 years ago)
Launch price (MSRP)	$99	no data

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	896	384
Core clock speed	1090 MHz	no data
Boost clock speed	1175 MHz	1900 MHz
Number of transistors	3,000 million	13,100 million
Manufacturing process technology	14 nm	6 nm
Power consumption (TDP)	65 Watt	45 Watt
Texture fill rate	65.80	45.60
Floating-point processing power	2.106 gflops	1.459 gflops
ROPs	16	16
TMUs	56	24

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 x8	PCIe 4.0 x8
Length	170 mm	no data
Width	2-slot	no data
Supplementary power connectors	None	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	no data
Maximum RAM amount	4 GB	System Shared
Memory bus width	128 Bit	no data
Memory clock speed	6000 MHz	no data
Memory bandwidth	96 GB/s	no data
Shared memory	-	-

Connectivity and outputs

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors	1x DVI, 1x HDMI, 1x DisplayPort	No outputs
HDMI	+	-

API compatibility

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

DirectX	12 (12_0)	12 (12_1)
Shader Model	6.4	6.5
OpenGL	4.6	4.6
OpenCL	2.0	2.0
Vulkan	1.2.131	1.2

Pros & cons summary

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Recency	4 July 2017	4 January 2022
Chip lithography	14 nm	6 nm
Power consumption (TDP)	65 Watt	45 Watt

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