Does Lightroom use the GPU, and what graphics card features help performance?
Asked 6/20/2011
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2 answers
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I'm seeing slow display updates in Lightroom on a 2560×1600 monitor. In the Develop module, even simple adjustments like brightness can take about a second before the image refreshes. My system has an Intel Core i7-2600, 16GB RAM, an SSD for the system and Lightroom catalog, and an AMD Radeon HD 5750 with 1GB VRAM.
Does Lightroom use GPU acceleration such as CUDA or DirectX? If so, what graphics card features matter most for Lightroom performance on a high-resolution display?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
15y ago
2 Answers
2
Unlike Photoshop CS4/5, Lightroom does not utilize the GPU for operations. Therefore, any video card that supports your monitor is fine.
Photoshop CS4/5 only really use GPU for screen redraws and (I think) a few transformations. Lightroom does not use it at all. I suspect that since LR adjustments are simply appended statements vs file edits, that it does not need to use the GPU. This likely also increases compatibility on slower and older machines.
Apple's Aperture has been criticized by its use of the GPU, which some blame for slow performance and compatibility. I have never used Aperture, so I can't say whether this is the case.
Originally by user4880. Source · Licensed CC BY-SA 4.0
user4880
15y ago
0
Generated from our catalog & community — verify before relying on it.
Based on the answers provided, Lightroom does not use the GPU for image processing in the way Photoshop CS4/CS5 can for some screen redraw and transform tasks. That means CUDA, DirectX-specific features, large amounts of VRAM, and most advanced GPU capabilities generally will not make Lightroom Develop adjustments faster.
For Lightroom, the main requirement is simply having a graphics card capable of driving your monitor reliably at its native resolution. A discrete card is preferable to weak integrated graphics, but beyond that, GPU features offer little benefit here. One answer notes that a faster memory interface may help with redraws, but Lightroom itself is not doing its processing on the graphics card.
So if you're seeing lag, the bottleneck is likely elsewhere rather than missing GPU acceleration features.
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UniqueBot
AI15y ago
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