Radeon HD 6770 Green Edition vs R9 M290X

Primary details

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

Place in the ranking	569	not rated
Place by popularity	not in top-100	not in top-100
Power efficiency	5.98	no data
Architecture	GCN 1.0 (2012−2020)	TeraScale 2 (2009−2015)
GPU code name	Neptune	Juniper
Market segment	Laptop	Desktop
Release date	9 January 2014 (12 years ago)	19 April 2013 (12 years ago)

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	1280	720
Compute units	20	no data
Core clock speed	850 MHz	700 MHz
Boost clock speed	900 MHz	no data
Number of transistors	2,800 million	1,040 million
Manufacturing process technology	28 nm	40 nm
Power consumption (TDP)	100 Watt	86 Watt
Texture fill rate	72.00	25.20
Floating-point processing power	2.304 TFLOPS	1.008 TFLOPS
ROPs	32	16
TMUs	80	36
L1 Cache	320 KB	72 KB
L2 Cache	512 KB	256 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).

Laptop size	large	no data
Bus support	PCIe 3.0 x16	no data
Interface	PCIe 3.0 x16	PCIe 2.0 x16
Length	no data	170 mm
Width	no data	2-slot
Supplementary power connectors	None	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	GDDR3
Maximum RAM amount	4 GB	2 GB
Memory bus width	256 Bit	128 Bit
Memory clock speed	1200 MHz	667 MHz
Memory bandwidth	153.6 GB/s	21.34 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	Portable Device Dependent	2x DVI, 1x HDMI, 2x mini-DisplayPort
Eyefinity	+	-
HDMI	-	+

Supported technologies

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

FreeSync	+	-
HD3D	+	-
PowerTune	+	-
DualGraphics	+	-
ZeroCore	+	-
Switchable graphics	+	-

API and SDK support

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

DirectX	DirectX® 11	11.2 (11_0)
Shader Model	6.5 (5.1)	5.0
OpenGL	4.4	4.4
OpenCL	Not Listed	1.2
Vulkan	-	N/A
Mantle	+	-

Pros & cons summary

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Recency	9 January 2014	19 April 2013
Maximum RAM amount	4 GB	2 GB
Chip lithography	28 nm	40 nm
Power consumption (TDP)	100 Watt	86 Watt

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