GeForce GTX 660M Mac Edition vs Iris Xe Graphics G4

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Primary details

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

Place in the rankingnot rated961
Place by popularitynot in top-100not in top-100
Power efficiencyno data2.25
ArchitectureGeneration 12.1 (2020−2021)Kepler (2012−2018)
GPU code nameTiger Lake GT2GK107
Market segmentDesktopLaptop
Release date2 September 2020 (4 years ago)1 April 2013 (11 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 cores384384
Core clock speed300 MHz950 MHz
Boost clock speed1100 MHzno data
Number of transistorsno data1,270 million
Manufacturing process technology10 nm28 nm
Power consumption (TDP)15 Watt50 Watt
Texture fill rate26.4030.40
Floating-point processing power0.8448 TFLOPS0.7296 TFLOPS
ROPs1216
TMUs2432

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 3.0 x1MXM-B (3.0)
WidthIGPno data
Supplementary power connectorsno dataNone

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 typeSystem SharedGDDR5
Maximum RAM amountSystem Shared512 MB
Memory bus widthSystem Shared128 Bit
Memory clock speedSystem Shared1250 MHz
Memory bandwidthno data80 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 ConnectorsNo outputsNo outputs

Supported technologies

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

Quick Sync+no data

API compatibility

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

DirectX12 (12_1)12 (11_0)
Shader Model6.45.1
OpenGL4.64.6
OpenCL3.01.2
Vulkan1.21.1.126
CUDA-3.0

Pros & cons summary


Recency 2 September 2020 1 April 2013
Chip lithography 10 nm 28 nm
Power consumption (TDP) 15 Watt 50 Watt

Iris Xe Graphics G4 has an age advantage of 7 years, a 180% more advanced lithography process, and 233.3% lower power consumption.

We couldn't decide between Iris Xe Graphics G4 and GeForce GTX 660M Mac Edition. We've got no test results to judge.

Be aware that Iris Xe Graphics G4 is a desktop card while GeForce GTX 660M 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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Intel Iris Xe Graphics G4
Iris Xe Graphics G4
NVIDIA GeForce GTX 660M Mac Edition
GeForce GTX 660M Mac Edition

Comparisons with similar GPUs

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Community ratings

Here you can see the user ratings of the compared graphics cards, as well as rate them yourself.


3.2 208 votes

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3 22 votes

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Questions & comments

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