Different clock rate dual d500
Why is one 725Mz and the other 150Mz?
Where are you looking?
Which card has the monitors connected?
13 replies
Lexmark 3 benchmark.
I have no idea. Here is what LuxMark 3 show for my D300s
Are you on El Capitan? I'm on 10.11.3
Yes, 10.11.3
I guess I'll do a hardware test and see if it says anything, might be a trip to the Genius Bar...
I am pretty sure those are supposed to be the same in almost all respects.
I suggest you book your Genius Bar appointment now, there is usually some lead time. And you will want to talk to them about this, regardless of what else you discover.
Yeah, strange. I ran AHT and found nothing wrong. The weird thing is that I'm getting benchmark tests comparable to similar machines. What gives? I noticed I have an older driver of OpenCL from December of last year. I saw that some folks have OpenCL from February of this year, could that be the difference? Can I update? Or is it specific to those GPU's?
I'm afraid if I go to the Genius Bar, they'll say that there's nothing wrong by using their hardware test.
Anything symptom you can duplicate without third-party add-ons present, they can fix. Repair-by-replacement can seem glacially slow, especially if they do not have the parts on hand, but it does make progress.
The fastest way to eliminate third-party add-ons for testing is to invoke Safe Mode (hold down Shift at Startup), which loads minimal Apple extensions, and NO third-party extensions.
I have seen similar weird numbers from my D300s.
Keep in mind that one runs displays, the other sits idle for most of the time.
So it may have moved down a power state or two when you started the benchmark.
Perhaps try running it again, or have another OpenCl bench running when you open it.
Like DPArt, LuxMark 3.1 shows one D300 running at 850MHz, while the other is at 150MHz (under 10.9.5). What puzzles me is the fact that both my monitors are driven by ONE D300 (Slot-2) no matter which ports I connect them to (ASUS PQ321 as main screen, DELL U2713HM as second display). Any idea why that is?
that both my monitors are driven by ONE D300 (Slot-2)
and if you had six, they would all be driven by ONE graphics card, leaving the second card free (by Design) for un-interrupted GPU computation without interruption.
This allows GPU computation to proceed MUCH faster on the free GPU. Interrupts for mundane drawing tasks require the GPU computations to be restarted, which is very inefficient.
I see. Thanks for clearing this up!
Different clock rate dual d500