Radeon R9 M395X Mac Edition vs HD 7970

Primary details

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

Place in the ranking	432	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	2.15	no data
Power efficiency	3.86	no data
Architecture	GCN 1.0 (2012−2020)	GCN 3.0 (2014−2019)
GPU code name	Tahiti	Amethyst
Market segment	Desktop	Laptop
Design	reference	no data
Release date	9 January 2012 (13 years ago)	5 May 2015 (10 years ago)
Launch price (MSRP)	$549	no data

Cost-effectiveness evaluation

The higher the ratio, the better. We use the manufacturer's recommended prices.

Performance to price scatter graph

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	2048	2048
Core clock speed	no data	909 MHz
Boost clock speed	925 MHz	no data
Number of transistors	4,313 million	5,000 million
Manufacturing process technology	28 nm	28 nm
Power consumption (TDP)	300 Watt	250 Watt
Texture fill rate	118.4	116.4
Floating-point processing power	3.789 TFLOPS	3.723 TFLOPS
ROPs	32	32
TMUs	128	128
L1 Cache	512 KB	512 KB
L2 Cache	768 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).

Bus support	PCIe 2.1 x16	no data
Interface	PCIe 3.0 x16	MXM-B (3.0)
Length	275 mm	no data
Width	2-slot	no data
Supplementary power connectors	1x 6-pin + 1x 8-pin	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	6 GB	4 GB
Memory bus width	384 Bit	256 Bit
Memory clock speed	1375 MHz	1365 MHz
Memory bandwidth	264 GB/s	174.7 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	1x DVI, 1x HDMI 1.4a, 2x mini-DisplayPort 1.2	No outputs
Eyefinity	+	-
HDMI	+	-

Supported technologies

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

CrossFire	+	-
FreeSync	+	-

API and SDK support

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

DirectX	DirectX® 11	12 (12_0)
Shader Model	6.5 (5.1)	6.3
OpenGL	4.6	4.6
OpenCL	2.1 (1.2)	2.0
Vulkan	-	1.2.131

Pros & cons summary

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Recency	9 January 2012	5 May 2015
Maximum RAM amount	6 GB	4 GB
Power consumption (TDP)	300 Watt	250 Watt

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