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friede

macrumors newbie
Original poster
Oct 14, 2008
19
0
Hi, i did the OpenCL Bench V 0.25 by mitch:

(https://www.macrumors.com/2009/08/30/opencl-benchmarks-and-support-for-both-macbook-pro-gpus/)

I'm on a MBP 13" 2.53GHz. The first time i did it my 9400M needed about 3 seconds. But then i did it again (and again and again) and now it always takes about 9 seconds...
I've seen in the forum that other user's 9400M also need 3 seconds doing the test.

The CPU is still at about 15 sec (as it was at the first time also).

Can anyone help me why my GPU is so slow now?




Here's what the test says:

Number of OpenCL devices found: 2
OpenCL Device # 0 = GeForce 9400M
Device 0 is an: GPU with max. 1100 MHz and 16 units/cores
Now computing - please be patient....
time used: 9.354 seconds

OpenCL Device # 1 = Intel(R) Core(TM)2 Duo CPU P8700 @ 2.53GHz
Device 1 is an: CPU with max. 2530 MHz and 2 units/cores
Now computing - please be patient....
time used: 14.682 seconds

Now checking if results are valid - please be patient....
:) Validate test passed - GPU results=CPU results :)
logout





EDIT: Sorry guys i got it. If the MBP runs on battery, the 9400M needs about 9 seconds
If it is plugged in it only needs about 3,5 seconds.

Look here:

Number of OpenCL devices found: 2
OpenCL Device # 0 = GeForce 9400M
Device 0 is an: GPU with max. 1100 MHz and 16 units/cores
Now computing - please be patient....
time used: 3.513 seconds

OpenCL Device # 1 = Intel(R) Core(TM)2 Duo CPU P8700 @ 2.53GHz
Device 1 is an: CPU with max. 2530 MHz and 2 units/cores
Now computing - please be patient....
time used: 14.578 seconds

Now checking if results are valid - please be patient....
:) Validate test passed - GPU results=CPU results :)
logout


Thats kinda big difference i think...
 
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