Radeon RX 580G vs GeForce 820M

Primary details

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

Place in performance ranking	993	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.03	no data
Architecture	Fermi (2010−2014)	GCN 4.0 (2016−2020)
GPU code name	N15V-GM	Polaris 20
Market segment	Laptop	Desktop
Release date	7 January 2014 (10 years ago)	15 October 2018 (5 years ago)
Current price	$490	$330

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

Detailed specifications

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	96	2304
Core clock speed	775 MHz	1257 MHz
Boost clock speed	no data	1330 MHz
Number of transistors	585 million	5,700 million
Manufacturing process technology	28 nm	14 nm
Power consumption (TDP)	15 Watt	185 Watt
Texture fill rate	10.00	191.5
Floating-point performance	240.0 gflops	no data

Form factor & compatibility

Information on GeForce 820M and Radeon RX 580G compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility). For notebook video cards it's notebook size, connection slot and bus, if the video card is inserted into a slot instead of being soldered to the notebook motherboard.

Bus support	PCI Express 2.0	no data
Interface	PCIe 2.0 x16	PCIe 3.0 x16
Length	no data	241 mm
Width	no data	2-slot
Supplementary power connectors	no data	1x 8-pin

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	GDDR5
Maximum RAM amount	2 GB	8 GB
Memory bus width	64 Bit	256 Bit
Memory clock speed	1800 MHz	8000 MHz
Memory bandwidth	14.4 GB/s	256.0 GB/s
Shared memory	-	no data

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	No outputs	1x HDMI, 3x DisplayPort
HDMI	no data	+

Supported technologies

Supported technological solutions. This information will prove useful if you need some particular technology for your purposes.

GPU Boost	2.0	no data
Optimus	+	no data
GameWorks	+	no data

API compatibility

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

DirectX	12 (11_0)	12 (12_0)
Shader Model	5.1	6.4
OpenGL	4.5	4.6
OpenCL	1.1	2.0
Vulkan	N/A	1.2.131
CUDA	+	no data

Pros & cons summary

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Recency	7 January 2014	15 October 2018
Maximum RAM amount	2 GB	8 GB
Chip lithography	28 nm	14 nm
Power consumption (TDP)	15 Watt	185 Watt

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