Radeon 550X 640SP vs HD 8870M

Primary details

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

Place in the ranking	752	not rated
Place by popularity	not in top-100	not in top-100
Architecture	GCN 1.0 (2012−2020)	GCN 4.0 (2016−2020)
GPU code name	Venus	Lexa
Market segment	Laptop	Desktop
Release date	1 April 2013 (13 years ago)	11 April 2018 (7 years ago)

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	640	640
Core clock speed	725 MHz	1019 MHz
Boost clock speed	775 MHz	1071 MHz
Number of transistors	1,500 million	2,200 million
Manufacturing process technology	28 nm	14 nm
Power consumption (TDP)	no data	50 Watt
Texture fill rate	31.00	42.84
Floating-point processing power	0.992 TFLOPS	1.371 TFLOPS
ROPs	16	16
TMUs	40	40
L1 Cache	160 KB	160 KB
L2 Cache	256 KB	256 KB

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).

Laptop size	large	no data
Interface	PCIe 3.0 x16	PCIe 3.0 x8
Width	no data	IGP
Supplementary power connectors	no data	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	GDDR5
Maximum RAM amount	2 GB	4 GB
Memory bus width	128 Bit	64 Bit
Memory clock speed	1125 MHz	1500 MHz
Memory bandwidth	72 GB/s	48 GB/s
Shared memory	-	-

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 DVI, 1x HDMI, 1x DisplayPort
HDMI	-	+

API and SDK support

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

DirectX	12 (11_1)	12 (12_0)
Shader Model	5.1	6.4
OpenGL	4.6	4.6
OpenCL	1.2	2.0
Vulkan	1.2.131	1.2.131

Pros & cons summary

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Recency	1 April 2013	11 April 2018
Maximum RAM amount	2 GB	4 GB
Chip lithography	28 nm	14 nm