Radeon HD 7640G + HD 7670M Dual Graphics vs HD 6870 X2

Primary details

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

Place in the ranking	not rated	1021
Place by popularity	not in top-100	not in top-100
Architecture	TeraScale 2 (2009−2015)	Terascale 3 (2010−2013)
GPU code name	Barts	no data
Market segment	Desktop	Laptop
Release date	8 July 2011 (14 years ago)	15 May 2012 (13 years ago)
Launch price (MSRP)	$520	no data

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	1120 ×2	736
Core clock speed	900 MHz	655 / 600 MHz
Number of transistors	1,700 million	no data
Manufacturing process technology	40 nm	40 nm
Power consumption (TDP)	300 Watt	no data
Texture fill rate	50.40 ×2	no data
Floating-point processing power	2.016 TFLOPS ×2	no data
ROPs	32 ×2	no data
TMUs	56 ×2	no data
L1 Cache	224 KB	no data
L2 Cache	512 KB	no data

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	no data	medium sized
Interface	PCIe 2.0 x16	no data
Length	304 mm	no data
Width	2-slot	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	GDDR5	no data
Maximum RAM amount	1 GB ×2	no data
Memory bus width	256 Bit ×2	128 Bit
Memory clock speed	1050 MHz	1800 MHz
Memory bandwidth	134.4 GB/s ×2	no data
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	2x DVI, 1x HDMI, 2x mini-DisplayPort	no data
HDMI	+	-

API and SDK support

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

DirectX	11.2 (11_0)	11
Shader Model	5.0	no data
OpenGL	4.4	no data
OpenCL	1.2	no data
Vulkan	N/A	-

Pros & cons summary

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Recency

8 July 2011

15 May 2012