Radeon HD 6770M Mac Edition vs GeForce GTX 555 OEM

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Primary details

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

Place in the rankingnot ratednot rated
Place by popularitynot in top-100not in top-100
ArchitectureFermi 2.0 (2010−2014)TeraScale 2 (2009−2015)
GPU code nameGF114Whistler
Market segmentDesktopLaptop
Release date14 May 2011 (13 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 cores288480
Core clock speed736 MHz725 MHz
Number of transistors1,950 million716 million
Manufacturing process technology40 nm40 nm
Power consumption (TDP)150 Watt35 Watt
Texture fill rate35.3317.40
Floating-point processing power0.8479 TFLOPS0.696 TFLOPS
ROPs248
TMUs4824

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).

InterfacePCIe 2.0 x16MXM-A (3.0)
Length210 mmno data
Width2-slotno data
Supplementary power connectors2x 6-pinno 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 typeGDDR5GDDR5
Maximum RAM amount1 GB512 MB
Memory bus width192 Bit128 Bit
Memory clock speed957 MHz900 MHz
Memory bandwidth91.87 GB/s57.6 GB/s

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 Connectors2x DVI, 1x mini-HDMINo outputs
HDMI+-

API compatibility

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

DirectX12 (11_0)11.2 (11_0)
Shader Model5.15.0
OpenGL4.64.4
OpenCL1.11.2
VulkanN/AN/A
CUDA2.1-

Pros & cons summary


Recency 14 May 2011 28 January 2011
Maximum RAM amount 1 GB 512 MB
Power consumption (TDP) 150 Watt 35 Watt

GTX 555 OEM has an age advantage of 3 months, and a 100% higher maximum VRAM amount.

HD 6770M Mac Edition, on the other hand, has 328.6% lower power consumption.

We couldn't decide between GeForce GTX 555 OEM and Radeon HD 6770M Mac Edition. We've got no test results to judge.

Be aware that GeForce GTX 555 OEM is a desktop card while Radeon HD 6770M Mac Edition is a notebook one.


Should you still have questions concerning choice between the reviewed GPUs, ask them in Comments section, and we shall answer.

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NVIDIA GeForce GTX 555 OEM
GeForce GTX 555 OEM
AMD Radeon HD 6770M Mac Edition
Radeon HD 6770M Mac Edition

Comparisons with similar GPUs

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Community ratings

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3.2 32 votes

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2.4 12 votes

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Questions & comments

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