Apple M3 Pro 18-Core GPU vs GeForce GTX 660 Rev. 2

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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
ArchitectureKepler (2012−2018)no data
GPU code nameGK104no data
Market segmentDesktopLaptop
Release date13 September 2014 (10 years ago)31 October 2023 (1 year 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 cores96018
Core clock speed980 MHzno data
Boost clock speed1032 MHzno data
Number of transistors3,540 millionno data
Manufacturing process technology28 nm5 nm
Power consumption (TDP)140 Wattno data
Texture fill rate82.56no data
Floating-point processing power1.981 TFLOPSno data
ROPs24no data
TMUs80no 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 sizeno datamedium sized
InterfacePCIe 3.0 x16no data
Length241 mmno data
Width2-slotno data
Supplementary power connectors1x 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 typeGDDR5LPDDR5-6400
Maximum RAM amount2 GBno data
Memory bus width192 Bitno data
Memory clock speed1502 MHzno data
Memory bandwidth144.2 GB/sno 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 Connectors2x DVI, 1x HDMI, 1x DisplayPortno data
HDMI+-

API compatibility

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

DirectX12 (11_0)no data
Shader Model5.1no data
OpenGL4.6no data
OpenCL1.2no data
Vulkan1.1.126-
CUDA3.0-

Pros & cons summary


Recency 13 September 2014 31 October 2023
Chip lithography 28 nm 5 nm

Apple M3 Pro 18-Core GPU has an age advantage of 9 years, and a 460% more advanced lithography process.

We couldn't decide between GeForce GTX 660 Rev. 2 and M3 Pro 18-Core GPU. We've got no test results to judge.

Be aware that GeForce GTX 660 Rev. 2 is a desktop card while Apple M3 Pro 18-Core GPU 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 660 Rev. 2
GeForce GTX 660 Rev. 2
Apple M3 Pro 18-Core GPU
M3 Pro 18-Core GPU

Comparisons with similar GPUs

We selected several comparisons of graphics cards with performance close to those reviewed, providing you with more options to consider.

Community ratings

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


3.5 49 votes

Rate GeForce GTX 660 Rev. 2 on a scale of 1 to 5:

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3.1 171 vote

Rate M3 Pro 18-Core GPU on a scale of 1 to 5:

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Questions & comments

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