Radeon HD 6770M Mac Edition vs GeForce GT 755M

Primary details

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

Place in the ranking	663	not rated
Place by popularity	not in top-100	not in top-100
Power efficiency	6.05	no data
Architecture	Kepler (2012−2018)	TeraScale 2 (2009−2015)
GPU code name	GK107	Whistler
Market segment	Laptop	Laptop
Release date	25 June 2013 (11 years ago)	28 January 2011 (13 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	384	480
Core clock speed	980 MHz	725 MHz
Number of transistors	1,270 million	716 million
Manufacturing process technology	28 nm	40 nm
Power consumption (TDP)	50 Watt	35 Watt
Texture fill rate	31.36	17.40
Floating-point processing power	0.7526 TFLOPS	0.696 TFLOPS
ROPs	16	8
TMUs	32	24

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	medium sized	no data
Bus support	PCI Express 3.0, PCI Express 2.0	no data
Interface	PCIe 3.0 x16	MXM-A (3.0)

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	GDDR5
Maximum RAM amount	2 GB	512 MB
Standard memory configuration	GDDR5	no data
Memory bus width	128 Bit	128 Bit
Memory clock speed	1350 MHz	900 MHz
Memory bandwidth	86.4 GB/s	57.6 GB/s
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	No outputs	No outputs
eDP 1.2 signal support	Up to 3840x2160	no data
LVDS signal support	Up to 1920x1200	no data
VGA аnalog display support	Up to 2048x1536	no data
DisplayPort Multimode (DP++) support	Up to 3840x2160	no data
HDMI	+	-
HDCP content protection	+	-
7.1 channel HD audio on HDMI	+	-
TrueHD and DTS-HD audio bitstreaming	+	-

Supported technologies

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

Blu-Ray 3D Support	+	-
H.264, VC1, MPEG2 1080p video decoder	+	-
Optimus	+	-
3D Vision / 3DTV Play	+	-

API compatibility

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

DirectX	12 API	11.2 (11_0)
Shader Model	5.1	5.0
OpenGL	4.5	4.4
OpenCL	1.1	1.2
Vulkan	1.1.126	N/A
CUDA	+	-

Pros & cons summary

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Recency	25 June 2013	28 January 2011
Maximum RAM amount	2 GB	512 MB
Chip lithography	28 nm	40 nm
Power consumption (TDP)	50 Watt	35 Watt

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