Radeon RX 550X 640SP vs Quadro K620

Primary details

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

Place in the ranking	593	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.37	no data
Power efficiency	8.88	no data
Architecture	Maxwell (2014−2017)	GCN 4.0 (2016−2020)
GPU code name	GM107	Baffin
Market segment	Workstation	Desktop
Release date	22 July 2014 (10 years ago)	11 April 2018 (6 years ago)
Launch price (MSRP)	$189.89	no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

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	384	640
Core clock speed	1058 MHz	1019 MHz
Boost clock speed	1124 MHz	1071 MHz
Number of transistors	1,870 million	3,000 million
Manufacturing process technology	28 nm	14 nm
Power consumption (TDP)	41 Watt	60 Watt
Texture fill rate	26.98	42.84
Floating-point processing power	0.8632 TFLOPS	1.371 TFLOPS
ROPs	16	16
TMUs	24	40

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 2.0 x16	PCIe 3.0 x8
Length	160 mm	145 mm
Width	1" (2.5 cm)	2-slot
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	128 Bit	GDDR5
Maximum RAM amount	2 GB	2 GB
Memory bus width	128 Bit	128 Bit
Memory clock speed	900 MHz	1500 MHz
Memory bandwidth	Up to 29 GB/s	96 GB/s

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 DisplayPort	1x DVI, 1x HDMI, 1x DisplayPort
Number of simultaneous displays	4	no data
HDMI	-	+

Supported technologies

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

3D Vision Pro	+	no data
Mosaic	+	no data
nView Desktop Management	+	no data

API compatibility

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

DirectX	12	12 (12_0)
Shader Model	5.1	6.4
OpenGL	4.5	4.6
OpenCL	1.2	2.0
Vulkan	1.1.126	1.2.131
CUDA	5.0	-

Pros & cons summary

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Recency	22 July 2014	11 April 2018
Chip lithography	28 nm	14 nm
Power consumption (TDP)	41 Watt	60 Watt

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