Photoshop CS6 & ATI 7950 3GB - shows only 2048 MB VRAM in CS6 (10.8.3)

[jaberwocky]

Hi there,
my 7950/3GB is full recognized within 10.8.3, Apple systemprofiler shows them as "AMD Radeon HD 7950 Series" with 3072 MB VRAM.

But build-in CS6 systeminformation tells me only 2048 MB VRAM / 2047 MB Open-GL RAM ?

Can you check within CS6 if it's the same for you? BTW, it's the latest CS6 patchlevel (Adobe Photoshop Version: 13.0 (13.0 20120315.r.428 2012/03/15:21:00:00) x64)

Best regards, jaberwocky

 

[DanielCoffey]

I too see the same 2Gb reported in Photoshop CS6 with my (now EFI flashed) 7950 3Gb.

Adobe Photoshop Version: 13.0.4 (13.0.4 20130104.r.28 2013/01/04:21:00:00) x64
Operating System: Mac OS 10.8.3
System architecture: Intel CPU Family:6, Model:44, Stepping:2 with MMX, SSE Integer, SSE FP, SSE2, SSE3, SSE4.1, SSE4.2, HyperThreading
Physical processor count: 6
Logical processor count: 12
Processor speed: 3330 MHz
Built-in memory: 12288 MB
Free memory: 7875 MB
Memory available to Photoshop: 11618 MB
Memory used by Photoshop: 70 %
Image tile size: 1024K
Image cache levels: 4
OpenGL Drawing: Enabled.
OpenGL Drawing Mode: Advanced
OpenGL Allow Normal Mode: True.
OpenGL Allow Advanced Mode: True.
OpenGL Allow Old GPUs: Not Detected.
OpenCL Version: 1.2 (Dec 4 2012 18:26:30)
OpenGL Version: 2.1
Video Rect Texture Size: 16384
OpenGL Memory: 2047 MB
Video Card Vendor: ATI Technologies Inc.
Video Card Renderer: AMD Radeon HD 7950 OpenGL Engine
Display: 1
Main Display
Display Depth: 32
Display Bounds: top=0, left=0, bottom=1440, right=2560
Video Renderer ID: 16915457
Video Card Memory: 2048 MB
Serial number: REDACTED
Application folder: /Applications/Adobe Photoshop CS6/
Photoshop scratch has async I/O enabled
Scratch volume(s):
Macintosh HD, 111.0G, 79.5G free
Required Plug-ins folder: /Applications/Adobe Photoshop CS6/Adobe Photoshop CS6.app/Contents/Required/
Primary Plug-ins folder: /Applications/Adobe Photoshop CS6/Plug-ins/
Additional Plug-ins folder: not set

 

[bsbeamer]

did you file a report with Adobe? They're awesome about addressing needs and feature requests. Would suspect since there was no "official" card supported at release time that probably has a lot to do with it. Now that manufacturers are releasing officially supported options, it's probably only an update away from having more cards added to their supported list.

Do have to wonder though - is this related to why the GTX 680 Mac version is only 2GB?

 

[DanielCoffey]

I have not submitted a report yet but will have a look at my options to do so.

 

[GP-SE]

in Steam it also only shows 2GB for me

 

[bsbeamer]

I have not submitted a report yet but will have a look at my options to do so.

it's not a big thing, just go here and fill out info:
https://www.adobe.com/cfusion/mmform/index.cfm?name=wishform

Photoshop I think is only handled by their main page now, but can report problems/issues directly there:
http://feedback.photoshop.com/photoshop_family

 

[DanielCoffey]

Damn - they are transitioning to Revel so I can't create a Photoshop.com account at the moment. No bug report from me I am afraid.

 

[MacVidCards]

Might be 32/64 bit thing.

I seem to recall that 2GB is max that 32 bits can address.

I have also noted that when I use GTX Titan in OSX, 6 GB shows up in System Profiler but only 4GB shows up in GLViewer or CUDA.

 

[jaberwocky]

Damn - they are transitioning to Revel so I can't create a Photoshop.com account at the moment. No bug report from me I am afraid.

Same for me, sorry.

 

[GP-SE]

Might be 32/64 bit thing.

I seem to recall that 2GB is max that 32 bits can address.

I have also noted that when I use GTX Titan in OSX, 6 GB shows up in System Profiler but only 4GB shows up in GLViewer or CUDA.

that's what I'm thinking, it's not a photoshop issue per-say, since I get the 2gb max in Steam also. Perhaps a driver bug?

 

[jaberwocky]

that's what I'm thinking, it's not a photoshop issue per-say, since I get the 2gb max in Steam also. Perhaps a driver bug?

Hmm, it seems to be application/programming related. Why:

I make a short test with a older version of GLView (OpenGL Extension Viewer, 3.32 (42)), from 2011. Under "Extension Tab" it detects 2047 MB memory for GL, using version 2.1 ATI-1.6.37 of GL Render Engine.

Same test with the actual version 4.0.8 (7) of GLViewer, using the same Render Engine version, it now detects 3072 MB.

BUT: Both version detects on tab "Pixel Versions" a total Video/Texture Memory of 2147483647

Please see below for screenshots:



Bye

 

[Mr. Retrofire]

Don't think so, it seems to be application/programming related. Why:

I make a short test with a older version of GLView (OpenGL Extension Viewer, 3.32 (42)), from 2011. Under "Extension Tab" it detects 2047 MB memory, using version 2.1 ATI-1.6.37 of GL Render Engine.

Same test with the actual version 4.0.8 (7) of GLViewer, using the same Render Engine version, it detects 3072 MB.

It is possible that some developers used old SDKs (Software Development Kits), which contain old 32-Bit data type definitions. Those applications need an update.

 

[MacsRgr8]

Same here:

Photoshop CS 6 and Steam: 2 GB

Apple System Profiler and OpenGL Extensions Viewer (4.0.8): 3 GB

Real test: X-Plane 10 uses easily more than 2 GB VRAM, in my test even 2.4 GB without penalty: > 2.3 GB can actually be used.

See screenshots (for X-Plane see "Total Size of all loaded textures..." @ the bottom)