Is 16GB memory enough for Photoshop?
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Community Expert , Jun 11, 2019 Jun 11, 2019 D Fosse • Community Expert , Jun 11, 2019 Jun 11, 2019
Photoshop is mainly bandwidth limited - moving data in and out of memory. But there is never "enough" RAM no matter how much you have installed. More memory is always needed. So Photoshop writes temporary working data to a temp directory on disk - aka the scratch disk. This is the crucial part. A scratch file is always set up, and whatever RAM you have acts as a fast access cache to the scratch disk's main memory. It's going back and forth in a dynamic process. The scratch disk used to be a bottl ...
Knowing how much RAM (System Memory) you need for working in Photoshop can be quite tricky at times because there are so many factors to keep in mind. Therefore, I’ve put together this guide that will answer all your questions about RAM/Memory usage when Editing Images. First of all, the total Memory usage can be split up into 2 main parts:
Let’s start with the second one so we have that out of the way. Just in case you are looking for some quick RAM recommendations, this is one of the best performing Memory Kits you can buy. The value is great, and if you are upgrading your RAM, do take a look at the 16GB Corsair Vengeance LPX DDR4 3200MHz RAM. That said, let’s begin: How much RAM does a typical Computer need to run?To make this easier, I’ll describe an average Photo Editor’s Computer. It runs Win 10, has a browser such as Chrome open with some tabs, an Email Software, and a Windows Photo-Viewer. Chrome is using 1.3 GByte, the Foto Viewer about 250 MByte, your Email Software another 125 MByte and so on. Let’s take a look at what Win 10 uses with only these 3 additional Programs started: 6 GByte of RAM is used, just so the System and some Regular programs can run. Now that we know how much RAM a typical System uses just to run, I’ll show you how much additional RAM you will need for Photo Editing in Photoshop: How much RAM does Photoshop need?This is how can you find out how much RAM you are currently using for Photoshop and how much you will probably need depending on your use case. After a fresh start of Photoshop, without having any Images loaded, the Software itself needs 262MByte of RAM. Start your Task Manager and see for yourself: Now, after opening a 5MByte JPG 12MP 8bpc (bits per channel) Image, your RAM usage increases to 369 MByte. Why does it increase over 100 MByte? My Image File Size is only about 5 MByte? Image CompressionWell, the answer is, your Photo Editing Software decompresses any compressed Image File types to make them editable. JPG is a compressed Image file type, as are PNG and GIF. By using compression algorithms, the Software can decrease file-size, without losing noticeable Quality. An Image, of course, can only be compressed to a certain degree until a quality loss is noticeable. The reason why a Photo Editing Software decompresses an Image during editing is that your photo manipulations are done on a pixel basis, and having to compress the Image after every pixel-change, will make the editing very slow and CPU intensive. Bit DepthAnother factor for calculating how much RAM you need to edit an uncompressed Image is Bit Depth. Typically you edit your Images in RGB mode, meaning you have three channels (R, G, and B) and every channel will be able to save 8 bits or 256 different values. Simplified Illustration of Bit-Depth on Monitors 8 bits per channel, 256 Values per Channel (or Color). All your JPG Images are in 8bpc or 24bpp (bits per pixel). ResolutionThe next important factor, of course, is Image resolution. The Math, fortunately, is quite easy: [Pixel Amount in Width] x [Pixel Amount in Height] x [Bit Depth] x [Number of Channels] divided by 8,000,000. Why 8 Million? Because 8 Bits are one Byte and a Megabyte are 1000000 Byte. This will give you the Uncompressed Image Size in MByte that resides in your RAM. If you only have one Layer! Layers in PhotoshopIf you have more than one Layer, you can roughly multiply the amount of RAM usage per Image by the number of Layers. Also, in Photoshop you can easily find how much RAM your uncompressed Image is currently using by looking at the bottom left corner. The first number is without Layers, the second with all Layers accounted for. How much Ram do you need for Photoshop?Ok, this was difficult enough, let’s look at this table, where all Important factors above have already been considered: RAM needs per Photoshop Layer
Great, now you can roughly estimate or calculate how much RAM a single Image will need. Now, to truly estimate How much RAM you will need for Photo Editing, all you’ll have to consider is:
That said, if you don’t want to calculate it yourself but just want a quick recommendation here it is: On Win 10 and Photoshop, 8 – 16GByte of RAM will be more than enough for most of your tasks when editing JPG Photos in the 10 – 20 Megapixel range and the occasional RAW Image. If you are a power user, who edits mainly in higher Bit depths and Resolutions and might have lots of other RAM-intensive Software running in the background, consider 16 – 32 GByte of RAM. Looking for some quick RAM recommendations? This is one of the most popular Memory Kit there is: 16GB Corsair Vengeance LPX DDR4 3200MHz RAM Be sure to give our PC Guide for Photo Editing a read if you’re in the market for buying a new Computer. That’s about it, have I missed anything? Let me know in the comments. CGDirector is Reader-supported. When you buy through our links, we may earn an affiliate commission. Is 16GB good enough for Photoshop?That said, if you don't want to calculate it yourself but just want a quick recommendation here it is: On Win 10 and Photoshop, 8 – 16GByte of RAM will be more than enough for most of your tasks when editing JPG Photos in the 10 – 20 Megapixel range and the occasional RAW Image.
Is 16GB memory good for photo editing?“We recommend 16GB RAM if you are running the latest Creative Cloud applications i.e. Photoshop and Lightroom Classic.” RAM is the second most important hardware, as it increases the number of tasks the CPU can handle at the same time. Simply opening Lightroom or Photoshop uses around 1 GB RAM each.
How much memory should I let Photoshop use?We don't recommend allocating more than 85% of your computer's memory to Photoshop. Doing so may affect performance by leaving no memory for other essential system applications. Note: If you experience out-of-RAM or out-of-memory errors in Photoshop, try increasing the amount of RAM allocated to Photoshop.
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