Photoshop: Question about RAM allocation

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Just curious as to why I have such a variation of available RAM between this version of my Photoshop 19.1.3 compared to the previous version 18.1.2. I was double checking my preferences and noticed that the available RAM is low. 

My installed RAM is 32.0 GB with (31.9 GB usable) Photoshop says I have less available RAM than I had in the previous version (18.1.2) and I would like to understand how PS calculates the available RAM. My Photoshop's working fine and so is my System which had no changes.

Below is the comparison and I've included my System info.

This version 19.1.3 
Performance Panel: Memory Usage: 
Available RAM is 25593 MB
Ideal Range 14076-18427 MB
Photoshop Use 15355 MB or 60%

Previous version 18.1.2
I took snapshots of my preferences in the previous version of PS and the available ram was higher:
Performance Panel: Memory Usage
Available RAM was 29419 MB
Ideal Range 16180-21182 MB
Photoshop Use 20299 MB or 69%


This is the top part of my System info through PS CC.

Adobe Photoshop Version: 19.1.3 20180323.r.293 2018/03/23: 1163761  x64
Number of Launches: 901
Operating System: Windows 10 64-bit
Version: 10 or greater 10.0.17134.1
System architecture: Intel CPU Family:6, Model:14, Stepping:3 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2, AVX, AVX2, HyperThreading
Physical processor count: 4
Logical processor count: 8
Processor speed: 3408 MHz
Built-in memory: 32627 MB
Free memory: 2 MB
Memory available to Photoshop: 25593 MB
Memory used by Photoshop: 60 %


This is part of my NVIDIA System Information report

Operating System: Windows 10 Home, 64-bit
DirectX version: 12.0 
GPU processor: GeForce GTX 970
Driver version: 397.31
Direct3D API version: 12
Direct3D feature level: 12_1
CUDA Cores: 1664 
Core clock: 1215 MHz 
Memory data rate: 7010 MHz
Memory interface: 256-bit 
Memory bandwidth: 224.32 GB/s
Total available graphics memory: 20409 MB
Dedicated video memory: 4096 MB GDDR5
System video memory: 0 MB
Shared system memory: 16313 MB
Video BIOS version: 84.04.36.00.71
IRQ: Not used
Bus: PCI Express x16 Gen3
Device ID: 10DE 13C2 29783842
Part Number: G401 0010

I hope someone can clarify this for me.

Thanks in advance.
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Rosa

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Posted 2 weeks ago

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Mark Payne

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I took a look at my CC2017 and CC2018 and noticed the available RAM was slightly off as well, but only by about 30MB. For me, I guess there may be some background OS processing that uses RAM for the system. Since this is a company PC, I never know what their system updates do.
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Rosa

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Thanks for checking Mark. Nothing's changed with my PC environment that's why this has me puzzled. 
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Lorrain

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Hello :)

Before the April 2018 update, the RAM available in the "performance" tab is 16 MB (the one installed on the PC).
After the update, the RAM is limited to just over 10 MB .... :(

Are the "advanced" GPU options all unchecked on your PCs ?

WIN 10, CC 2018, GT 1030
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Rosa

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Hi Lorrain,

Thank you so much for your response. Do you know why the RAM's limited to just over 10 MB for PC after the update? Just seems a little weird.

In the "Advanced" I have left it as the default with all ticked except for the 30 Bit Display as Photoshop works perfectly for me. I don't have any issues with the program at all. I can work with heaps of layers and often push Photoshop a fair bit and I've never had any issues.

I can have Bridge and Photoshop open while I work on other things too and never have issues with memory so that's why I was curious about the RAM allocation amount. :)
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Rosa

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Hello dear Photoshop Community,

Does anyone have an answer to my question?

Just curious as to why I have such a variation of available RAM between this version of my Photoshop 19.1.3 compared to the previous version 18.1.2. I was double checking my preferences and noticed that the available RAM is low. 

My installed RAM is 32.0 GB with (31.9 GB usable) Photoshop says I have less available RAM than I had in the previous version (18.1.2) and I would like to understand how PS calculates the available RAM. My Photoshop's working fine and so is my System which had no changes.

My system info is in original post above.

Cheers.
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PECourtejoie, Champion

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Hello, I've seen several posts with a memory amount issue. It is due to a Windows update, the interim solution is changing a key in the registry: https://helpx.adobe.com/photoshop/kb/invalid-numeric-entry-integer-96-8-required-photoshop.html
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Rosa

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Hello @PECourtejoie and thanks so much! I suspected it may have been due to a Windows update. I'm not comfortable with changing registry values and as PS is behaving I'll wait for a solution. 
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PECourtejoie, Champion

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Rosa, if older versions are not be affected, your best bet would be to continue working in them, until a fix is ready, would it be from Ms or Adobe... (it is a useful feature of Creative Cloud)
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Rosa

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Thanks so much. :)