Radeon RX 550X 640SP vs GeForce GTX 950

Primary details

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

Place in the ranking	374	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	8.50	no data
Power efficiency	10.64	no data
Architecture	Maxwell 2.0 (2014−2019)	GCN 4.0 (2016−2020)
GPU code name	GM206	Baffin
Market segment	Desktop	Desktop
Release date	20 August 2015 (9 years ago)	11 April 2018 (6 years ago)
Launch price (MSRP)	$159	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	768	640
Core clock speed	1024 MHz	1019 MHz
Boost clock speed	1188 MHz	1071 MHz
Number of transistors	2,940 million	3,000 million
Manufacturing process technology	28 nm	14 nm
Power consumption (TDP)	90 Watt	60 Watt
Texture fill rate	57.02	42.84
Floating-point processing power	1.825 TFLOPS	1.371 TFLOPS
ROPs	32	16
TMUs	48	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).

Bus support	PCI Express 3.0	no data
Interface	PCIe 3.0 x16	PCIe 3.0 x8
Length	202 mm	145 mm
Height	4.376" (11.1 cm)	no data
Width	2-slot	2-slot
Recommended system power (PSU)	350 Watt	no data
Supplementary power connectors	1x 6-pin	None
SLI options	+	-

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	GDDR5
Maximum RAM amount	2 GB	2 GB
Memory bus width	128 Bit	128 Bit
Memory clock speed	6.6 GB/s	1500 MHz
Memory bandwidth	105.6 GB/s	96 GB/s
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	Dual Link DVI-I, HDMI 2.0, 3x DisplayPort 1.2	1x DVI, 1x HDMI, 1x DisplayPort
Multi monitor support	4 displays	no data
HDMI	+	+
HDCP	+	-
Maximum VGA resolution	2048x1536	no data
G-SYNC support	+	-
Audio input for HDMI	Internal	no data

Supported technologies

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

GameStream	+	-
GeForce ShadowPlay	+	-
GPU Boost	2.0	no data
GameWorks	+	-

API compatibility

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

DirectX	12 (12_1)	12 (12_0)
Shader Model	6.4	6.4
OpenGL	4.5	4.6
OpenCL	1.2	2.0
Vulkan	1.1.126	1.2.131
CUDA	+	-

Pros & cons summary

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Recency	20 August 2015	11 April 2018
Chip lithography	28 nm	14 nm
Power consumption (TDP)	90 Watt	60 Watt

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