GeForce Go 6600 NPB 128M vs Iris Graphics 540

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Primary details

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

Place in the ranking742not rated
Place by popularitynot in top-100not in top-100
Power efficiency15.02no data
ArchitectureGeneration 9.0 (2015−2016)Curie (2003−2013)
GPU code nameSkylake GT3eNV43 A4
Market segmentDesktopLaptop
Release date1 September 2015 (9 years ago)29 September 2005 (19 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 cores384no data
Core clock speed300 MHz375 MHz
Boost clock speed1000 MHzno data
Number of transistors189 million146 million
Manufacturing process technology14 nm+110 nm
Power consumption (TDP)15 Wattno data
Texture fill rate48.003.000
Floating-point processing power0.768 TFLOPSno data
ROPs64
TMUs488

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).

InterfaceRing BusPCIe 1.0 x16
WidthIGPno 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 typeSystem SharedDDR
Maximum RAM amountSystem Shared128 MB
Memory bus widthSystem Shared128 Bit
Memory clock speedSystem Shared300 MHz
Memory bandwidthno data9.6 GB/s
Shared memory+no data

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 ConnectorsPortable Device DependentNo 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)9.0c (9_3)
Shader Model6.43.0
OpenGL4.62.1
OpenCL3.0N/A
Vulkan1.3N/A

Pros & cons summary


Recency 1 September 2015 29 September 2005
Chip lithography 14 nm 110 nm

Iris Graphics 540 has an age advantage of 9 years, and a 685.7% more advanced lithography process.

We couldn't decide between Iris Graphics 540 and GeForce Go 6600 NPB 128M. We've got no test results to judge.

Be aware that Iris Graphics 540 is a desktop card while GeForce Go 6600 NPB 128M 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 Graphics 540
Iris Graphics 540
NVIDIA GeForce Go 6600 NPB 128M
GeForce Go 6600 NPB 128M

Comparisons with similar GPUs

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Community ratings

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3.5 92 votes

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1.1 304 votes

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Questions & comments

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