Quadro k5000- Different openGL features and performance between PC and Mac

[bilbo]

Hello. 




 
I have a quadro K5000 (pc-version), running with El Capitan. I'm happy with the behaviour and performace. It works fluently, and apparently with good performance...But, trying to refine the hack, I've been taking a look and testing the graphic card. I always have seen lower results in mac than in windows, and it doesn't worry me , but using openGL extensions viewer I can see:


First, one significant (more than I expected) difference between mac and win test. But the weird is that the info of openGL EV gives a me different open GL features enabled:


 

 

 

 

Result of OpenGL extensions viewer on PC. On red, results and openGL features enabled.










 

 

Same test on mac. A big difference in results and less opengl features enabled:

 

 

 







Hardware monitor shows card working with stock's clock speeds (705 mhz Core, 5,40 ghz memory) and sometimes reach lower states when systems is in idle. So I guess I have a kind of right PM.


More tests:


OpenGL test cinebench on Win

 

 







 

and on mac

 

 

 






 

 

I'd like to know the reason of the different performance, but What does the different openGl features enabled mean? Maybe PC-cards has different opengl features on their vbios that can't be enabled on mac?


thanks in advance

[iamtheonlyone4ever]

the reason is mac OpenGL drivers are up to 4.1 and windows are up 4.5 , mac OpenCL drivers go up to 1.2 and windows up to 2.2 , this is the problem with graphic performance in mac , apple is using old drivers and refuse to update. https://support.apple.com/en-us/HT202823

 

if you are running El Capitan you need to test both Metal and OpenGL with these benchmark tools

https://itunes.apple.com/us/app/gfxbench-gl/id627547197?mt=8

https://itunes.apple.com/us/app/gfxbench-metal/id989080902?mt=8

 

also there are some new updates in metal api in sierra which improves FPS even more than in EC , sorry is a lot to explain and i'm a little short on time right know, plus i don't know if i'm allow to post links to other forums which explained all this situation. but those app can give you a good head start, you should get higher results with metal than with OpenGL. the problem is that those old benchmark apps are not going to work good in EC because EC uses metal, of course still uses OpenGL and OpenCL but you will get better result using a metal ready benchmark tool that is compatible with EC. and metal is better optimized than those old OpenCL and OpenGL drivers from apple, like a said is a lot to explain and also can get a little confusing if i try to explain too much, also my english is not perfect and that will make things even harder. i hope some other users here can give you hand too.

[bilbo]

oh, don't worry. I really appreciate your answer. Pretty clarifying.

 

So, one more among thousand of stupid ideas of Apple.

[iamtheonlyone4ever]

sorry for the late reply. i always wanted to give you a better explanation, here is a link you can read it when you have time, there it explains your question

 

http://forums.macrumors.com/threads/another-mac-port-gets-cancelled-due-to-apples-poor-graphics-support.1974373/

 

we start taking from mac gaming then we moved to hardware and software, benchmarks etc, so you will have a better understanding of the whole situation, meaning what wrong with graphic support in mac.