Radeon HD 6775G2 vs HD 7870 XT

Primary details

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

Place in the ranking	410	not rated
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	3.48	no data
Power efficiency	4.33	no data
Architecture	GCN 1.0 (2011−2020)	Terascale 2 (2009−2015)
GPU code name	Tahiti	no data
Market segment	Desktop	Laptop
Release date	19 November 2012 (11 years ago)	14 June 2011 (13 years ago)
Launch price (MSRP)	$270	no data

Cost-effectiveness evaluation

Performance to price ratio. The higher, the better.

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	1536	880
Core clock speed	925 MHz	no data
Boost clock speed	975 MHz	no data
Number of transistors	4,313 million	no data
Manufacturing process technology	28 nm	40 nm
Power consumption (TDP)	185 Watt	no data
Texture fill rate	93.60	no data
Floating-point processing power	2.995 TFLOPS	no data
ROPs	32	no data
TMUs	96	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 3.0 x16	no data
Length	267 mm	no data
Width	2-slot	no data
Supplementary power connectors	2x 6-pin	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	2 GB	no data
Memory bus width	256 Bit	no data
Memory clock speed	1500 MHz	no data
Memory bandwidth	192.0 GB/s	no data
Shared memory	-	-

Connectivity and outputs

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

API compatibility

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

DirectX	12 (11_1)	11
Shader Model	5.1	no data
OpenGL	4.6	no data
OpenCL	1.2	no data
Vulkan	1.2.131	-

Pros & cons summary

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Recency	19 November 2012	14 June 2011
Chip lithography	28 nm	40 nm

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