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LookUp Tables (LUT) and Intel® Graphics FAQ

Content Type: Product Information & Documentation | Article ID: 000028999 | Last Reviewed: 09/04/2024

What is a lookup table?

A lookup table (LUT) is an array of numbers that may be referred to by subscript. This avoids the recalculation of values each time a number in a table must be referred to. In computer graphics, you can use lookup tables to store the starting addresses of each line and the values corresponding to the placement of pixels within a byte.

Why would you need to know how many lookup tables are available in your graphics controller?

Professionals working with video- or image-editing software may need to calibrate their monitors to achieve the high level of color accuracy their work requires. Often, the graphics card needs to have more than one LUT in order to calibrate more than one monitor at a time.

What kind of hardware or software would typically require details about available LUTs?

Color calibration hardware and software, such as the Spyder5PRO* Family display calibrators, would need this information.

How can I tell how many LUTs are available in my Intel® Graphics controller?

You can find out by downloading this tool: GammaTest.

Note

This is a third party-controlled website and tool. Intel doesn't control the content that is available and it's simply being offered here for your convenience.

Move the Gamma Test window to a second screen. If you're able to individually turn each monitor magenta, you have multiple LUTs. If both monitors show magenta, you have only one LUT in your Intel Graphics controller.

Why is the information about the number of lookup tables not publicly available?

As color calibration hardware and software become more mainstream, we recognize the importance of having this information available and easy to find. Intel is currently working on making lookup table information available.

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This article applies to 128 products.

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Intel® Iris® Plus Graphics 650 Intel® Iris® Plus Graphics 640 Intel® Iris® Graphics 5100 Intel® Iris® Graphics 540 Intel® Iris® Graphics 550 Intel® HD Graphics 2000 Intel® HD Graphics 3000 Intel® HD Graphics 515 Intel® HD Graphics 520 Intel® HD Graphics 530 Intel® HD Graphics 5000 Intel® HD Graphics 4200 Intel® HD Graphics 4600 Intel® HD Graphics 4400 Intel® HD Graphics 2500 Intel® HD Graphics 4000 Intel® HD Graphics P630 Intel® HD Graphics 630 Intel® HD Graphics 610 Intel® HD Graphics 615 Intel® HD Graphics 620 Intel® Iris® Pro Graphics 5200 Intel® Iris® Pro Graphics 580 Graphics Drivers for Intel® B43 Express Chipset Intel® Graphics Media Accelerator 600 (Intel® GMA 600) Intel® Graphics Media Accelerator 3150 (Intel® GMA 3150) Intel® Graphics Media Accelerator 500 (Intel® GMA 500) Intel® Graphics Media Accelerator 3600 Series Graphics Drivers for Intel® Q35 Express Chipset Graphics Drivers for Intel® Q33 Express Chipset Graphics Drivers for Intel® G31 Express Chipset Graphics Drivers for Intel® G35 Express Chipset Graphics Drivers for Intel® G33 Express Chipset Graphics Drivers for Intel® 82810 Graphics and Memory Controller Hub (GMCH) Graphics Drivers for Intel® 82815 Graphics Controller Graphics Drivers for Intel® 82852/82855 Graphics Controller Family Graphics Drivers for Intel® 82865G Graphics and Memory Controller Hub (GMCH) Graphics Drivers for Intel® 82845G Graphics Controller Graphics Drivers for Intel® 82830M Graphics and Memory Controller Hub (GMCH) Graphics Drivers for Mobile Intel® 965 Express Chipset Family Graphics Drivers for Intel® 82915G/82910GL Express Chipset Family Graphics Drivers for Mobile Intel® 945GM Express Chipset Family Graphics Drivers for Intel® 82945G Express Chipset Graphics Drivers for Mobile Intel® 915GM/GMS, 910GML Express Chipset Family Graphics Drivers for Intel® 82Q963 Graphics and Memory Controller Hub (GMCH) Graphics Drivers for Intel® 82Q965 Graphics and Memory Controller Hub (GMCH) Graphics Drivers for Intel® 82G965 Graphics and Memory Controller Hub (GMCH) Graphics Drivers for Intel® 82946GZ Graphics Controller Graphics Drivers for Mobile Intel® 4 Series Express Chipset Family Graphics Drivers for Intel® G43 Express Chipset Graphics Drivers for Intel® G45 Express Chipset Graphics Drivers for Intel® G41 Express Chipset Graphics Drivers for Intel® Q43 Express Chipset Graphics Drivers for Intel® Q45 Express Chipset

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