Without a dedicated and compatible graphics card, certain features in Lightroom will not function. One in particular is the slideshow. The latest version of Lightroom CC2015.6 now has a message box that displays informing me why the slideshow doesn't display. Previously Lightroom just displayed a blank screen.
VRAM is something entirely different from your usable 8 GB of RAM, totally unrelated. It is RAM that is part of the video card itself and used exclusively for video purposes.
How do I know if a PC has a dedicated and compatible graphics card ?
For example below id the spec of two Samsung Notebook 9:
CHIPSET NVIDIA® GeForce® GTX 950M Intel EXTERNAL OR INTEGRATED External Integrated MAXIMUM GRAPHICS MEMORY 2GB GDDR5 Shared
This is not entirely correct. Even with a CPU integrated GPU like in many of the Intel i processors the slideshow plays well, as long as it is a supported version as listed here: Adobe Lightroom GPU Troubleshooting and FAQ
I have an i7 with Intel HD4600 and no dedicated graphic card and everything works as supposed with 1920x1200 resolution.
Of course, if you use a higher resolution display, the integrated GPU's won't work because they don't have enough 'horsepower' to drive the higher resolutions - on some you even can't select the higher resolutions.
The NVIDIA GeForce GTX950M is a (rather powerful) dedicated graphic card.
Thank you for your response !
I am also looking at the Dell XPS 13 and it has an Intel® Iris™ Graphics 540. Would that be a integrated or dedicated graphic card. I do not see it in the list of supported graphics card.
Do you think it qualifies?
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The Intel Iris is a CPU integrated GPU and has less 'horsepower' than a NVIDIA GTX. It probably is supported because it's newer and more powerful than the supported HD4600 for instance.
All Intel GPU's are integrated - they currently don't have any dedicated GPU chips.
Add.: The GTX is more powerful but the difference is not that big.
Thank you so much for taking the time to respond !
Is it therefore better to have an external GPU like on the Samsung pro with the ( NVIDIA® GeForce® GTX 950M) but only 8GB of RAM rather than the Dell XPS 13 which has 16GB of RAM but only a Intel® Iris™ Graphics 540. So the question is what is more important? The RAM or the external GPU?
What is the segmentation for the graphics cards? How do we recognize the one that are more powerful? What will work with LR6?
So the question is what is more important? The RAM or the external GPU?
More important to what?
RAM tends to require a minimum amount for Lightroom to function well, and for most people doing most tasks, 8GB is fine. If you doing humongous panoramas or HDR photos, for example, a dozen 36 MP input files, you're going to need more memory.
Certain GPUs can speed up certain development module tasks (but really has no effect on the rest of Lightroom).
The CPU is really the most important element of your system, the faster it is, the faster Lightroom will operate.
Virtually any graphic card will work with Lightroom, however as stated above, some features (GPU acceleration) require a faster GPU, and this is described here: Adobe Lightroom GPU Troubleshooting and FAQ
So apparently the problem is that my computer is old enough that the integrated graphics system isn't usable by Lightroom. And that is why I get the message. I can't decide if it's worth spending the money just to be able to use the slideshow. I'd probably be wiser to get a new computer.