Radeon HD 8670A vs HD 7660D

Primary details

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

Place in the ranking	1095	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	0.09	no data
Power efficiency	0.94	no data
Architecture	TeraScale 3 (2010−2013)	GCN 1.0 (2012−2020)
GPU code name	Devastator	Sun
Market segment	Desktop	Laptop
Release date	2 October 2012 (13 years ago)	2 February 2013 (13 years ago)
Launch price (MSRP)	$122	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	384	320
Core clock speed	800 MHz	600 MHz
Boost clock speed	800 MHz	no data
Number of transistors	1,303 million	690 million
Manufacturing process technology	32 nm	28 nm
Power consumption (TDP)	100 Watt	45 Watt
Texture fill rate	19.20	12.00
Floating-point processing power	0.6144 TFLOPS	0.384 TFLOPS
ROPs	8	8
TMUs	24	20
L1 Cache	no data	80 KB
L2 Cache	no data	128 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	IGP	MXM-A (3.0)
Width	IGP	no data

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	System Shared	DDR3
Maximum RAM amount	System Shared	1 GB
Memory bus width	System Shared	64 Bit
Memory clock speed	System Shared	1000 MHz
Memory bandwidth	no data	16 GB/s
Shared memory	+	no data

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	11.2 (11_0)	12 (11_1)
Shader Model	5.0	6.5 (5.1)
OpenGL	4.4	4.6
OpenCL	1.2	2.1 (1.2)
Vulkan	N/A	1.2.170

Pros & cons summary

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Recency	2 October 2012	2 February 2013
Chip lithography	32 nm	28 nm
Power consumption (TDP)	100 Watt	45 Watt