N1 20SM vs Radeon 620

Primary details

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

Place in the ranking	920	not rated
Place by popularity	not in top-100	not in top-100
Power efficiency	3.48	no data
Architecture	GCN 3.0 (2014−2019)	Blackwell 2.0 (2025−2026)
GPU code name	Polaris 24	GB20B
Market segment	Laptop	Laptop
Release date	13 May 2019 (7 years ago)	1 June 2026 (less than a year ago)

Detailed specifications

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

Pipelines / CUDA cores	384	2560
Core clock speed	730 MHz	741 MHz
Boost clock speed	1024 MHz	2346 MHz
Number of transistors	1,550 million	no data
Manufacturing process technology	28 nm	5 nm
Power consumption (TDP)	50 Watt	no data
Texture fill rate	24.58	375.4
Floating-point processing power	0.7864 TFLOPS	12.01 TFLOPS
ROPs	8	24
TMUs	24	160
Tensor Cores	no data	80
Ray Tracing Cores	no data	20
L1 Cache	96 KB	2.5 MB
L2 Cache	128 KB	50 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 x8	PCIe 5.0 x16
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	DDR3	LPDDR5X
Maximum RAM amount	2 GB	128 GB
Memory bus width	64 Bit	256 Bit
Memory clock speed	900 MHz	1067 MHz
Memory bandwidth	14.4 GB/s	273.2 GB/s
Shared memory	-	no data
Resizable BAR	-	+

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	1x HDMI
HDMI	-	+

API and SDK support

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

DirectX	12 (12_0)	N/A
Shader Model	6.3	N/A
OpenGL	4.6	N/A
OpenCL	2.0	3.0
Vulkan	1.2.131	N/A
CUDA	-	12.1
DLSS	-	+

Pros & cons summary

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Recency	13 May 2019	1 June 2026
Maximum RAM amount	2 GB	128 GB
Chip lithography	28 nm	5 nm