Radeon HD 7970M X2 vs 540X

Primary details

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

Place in the ranking	756	not rated
Place by popularity	not in top-100	not in top-100
Power efficiency	5.91	no data
Architecture	GCN 4.0 (2016−2020)	GCN 1.0 (2012−2020)
GPU code name	Lexa	Wimbledon
Market segment	Laptop	Laptop
Release date	5 September 2018 (7 years ago)	24 April 2012 (14 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	512	1280 ×2
Core clock speed	980 MHz	850 MHz
Boost clock speed	1046 MHz	no data
Number of transistors	2,200 million	2,800 million
Manufacturing process technology	14 nm	28 nm
Power consumption (TDP)	50 Watt	200 Watt
Texture fill rate	33.47	68.00 ×2
Floating-point processing power	1.071 TFLOPS	2.176 TFLOPS ×2
ROPs	16	32 ×2
TMUs	32	80 ×2
L1 Cache	128 KB	320 KB
L2 Cache	512 KB	512 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).

Interface	PCIe 3.0 x8	MXM-B (3.0)
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	GDDR5	GDDR5
Maximum RAM amount	2 GB	2 GB ×2
Memory bus width	64 Bit	256 Bit ×2
Memory clock speed	1500 MHz	1200 MHz
Memory bandwidth	48 GB/s	153.6 GB/s ×2
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

Portable Device Dependent

API and SDK support

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

DirectX	12 (12_0)	12 (11_1)
Shader Model	6.4	6.5 (5.1)
OpenGL	4.6	4.6
OpenCL	2.0	2.1 (1.2)
Vulkan	1.2.131	1.2.170

Pros & cons summary

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Recency	5 September 2018	24 April 2012
Chip lithography	14 nm	28 nm
Power consumption (TDP)	50 Watt	200 Watt