NV28 A2 vs Radeon HD 6870 X2

General info

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

Place in performance ranking	not rated	not rated
Place by popularity	not in top-100	not in top-100
Architecture	TeraScale 2 (2009−2015)	Kelvin (2001−2003)
GPU code name	Barts	NV28 A2
Market segment	Desktop	Desktop
Release date	8 July 2011 (12 years ago)	no data
Launch price (MSRP)	$520	no data

Technical specs

General performance parameters such as number of shaders, GPU core base clock and boost clock speeds, manufacturing process, texturing and calculation speed. These parameters indirectly speak of performance, but for precise assessment you have to consider their benchmark and gaming test results. Note that power consumption of some graphics cards can well exceed their nominal TDP, especially when overclocked.

Pipelines / CUDA cores	1120	no data
Core clock speed	900 MHz	no data
Number of transistors	1,700 million	36 million
Manufacturing process technology	40 nm	150 nm
Power consumption (TDP)	300 Watt	no data
Texture fill rate	50.40	no data
Floating-point performance	2x 2,016.0 gflops	no data

Size and 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 2.0 x16	no data
Length	304 mm	no data
Width	2-slot	no data

Memory

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	no data
Memory bus width	256 Bit	no data
Memory clock speed	4200 MHz	no data
Memory bandwidth	134.4 GB/s	no data

Video outputs and ports

Types and number of video connectors present on the reviewed GPUs. As a rule, data in this section is precise only for desktop reference ones (so-called Founders Edition for NVIDIA chips). OEM manufacturers may change the number and type of output ports, while for notebook cards availability of certain video outputs ports depends on the laptop model rather than on the card itself.

Display Connectors	2x DVI, 1x HDMI, 2x mini-DisplayPort	no data
HDMI	+	no data

API support

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

DirectX	11.2 (11_0)	8.1
Shader Model	5.0	no data
OpenGL	4.4	1.3
OpenCL	1.2	N/A
Vulkan	N/A	N/A

Advantages and disadvantages

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Chip lithography

40 nm

150 nm

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