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News Archive for Thursday May 21, 2009       Goto Current News Page

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ATI 3870 owner workaround for high card fan speed w/OS X 10.5.7
Follow-up from a 2007 Mac Pro owner w/ATI 3870 that reported high card fan speeds in 10.5.7, (but not in 10.5.6 - he has separate HDs w/10.5.7 and 10.5.6 in his Mac Pro)
Since he mentioned using software update originally, I asked if he had tried a Combo 10.5.7 updater reinstall, but that didn't help he said so he reinstalled the ATI driver from 10.5.6:

" I tried the combo 10.5.7 updater. The problem is always present.
But I think I have found a solution. The drivers for my card ATIRAdeonX2000 have the original version (6277) in 10.5.6. Version in OS X 10.5.7 is (6686). (noted in May 12th news). With Kext Helper ( I put the previous version on my 10.5.7 drive and my card is again silent.
I will continue testing to be sure everything works.
(FYI - card is retail Mac/PC Edition 3870 with ROM 113-B3390F-270 and EFI v01.00.270)

If any other ATI 3870 owner has seen this problem (or not) after updating to 10.5.7, let me know. (Some 3870 owners in the past (long before 10.5.7) had noted fan behavior issues, although not all did.)
I received another reply on this issue today:

"I have a 2006 Mac Pro that has been upgraded with quad core 2.66 processors and ATI 3870. After the 10.5.7 update the 3870's fans run faster and very erratic. I had no problems with 10.5.6.
(David Allen Studios)"

Here's a later mail (from May 25th) from a 3870 owner not seeing any fan speed issues w/10.5.7.

"No Problems at all with my update to 10.5.7 with the ATI 3870 Mac/Pc Retail Card.
I did a complete Fresh install Like always, using the "Combo update" 10.5.7 and have not seen nor heard any problems with this card in regards to Fan Noise, it only speeds up (Fan) using High Graphics intense applications, and then not by very much.

Also I have never had a problem with this card, I am running a 1st Generation Mac Pro, 8 gig memory. Good Luck in trying to find out the cause, and I really enjoy the site, great information as always.
Ken M.
Design Fx
System Details: (from Apple system profiler)
Model Identifier: MacPro1,1
Processor Name: Dual-Core Intel Xeon (2.66GHz x 2)
Boot ROM Version: MP11.005D.B00
SMC Version (system): 1.7f10

ATI Radeon HD 3870:
Device ID: 0x9501
Revision ID: 0x0000
ROM Revision: 113-B3390F-270
EFI Driver Version: 01.00.270"

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Looking for DVI (video card) to Mini DisplayPort LED Cinema Display adapter (one in the works?)
I know Apple originally designed the 24in LED Cinema display for (unibody) MacBook/MacBook Pros and have added Mini Displayport outputs to some new Macs and the OEM Nvidia GT120 and ATI 4870 cards, but I wish Apple had included (or will in the future) a DVI port (or HDMI) on that display. That would have increased the compatibility (and market) an order of magnitude. Anyway, the reason I posted this is an owner of an Apple LED Cinema display complained that the (soon to be shipping) Nvidia FX-4800 and GTX-285 cards for Mac Pros have no Mini DisplayPort. (That's understandable as the vast majority do not have Mini DisplayPort monitors and creating a non-standard board w/mini DisplayPort would have added more cost.)
He had not been able to find an adapter to allow using his LED Cinema display with a DVI port card. (There are MDP to DVI display, MDP to HDMI display, etc. adapters available - but the search is for an adapter to connect a DVI port Video card to the Mini DisplayPort (only) Apple LED Cinema Display.)
I don't know of any DVI port (video card output) to Mini DisplayPort (display) adapters (currently), but if any reader does let me know.
Update: The reader that originally asked about this sent a note that there may be an adapter available next month:

" Mike, I've done some more searching and still nothing, however, I called this website and spoke to Charles who said they should have this adapter (male DVI to female Mini Display Port adapter) out late next month. He said he is compiling an email list of individuals who inquired about this type of adapter and will inform them when available. I'll let you know when I hear something.
-Greg M."

(I asked if he'd inquire about pricing. ) If/when this adapter becomes available (or someone spots one elsewhere), I'll add a note/link to it on the previous page here of LED Cinema Display user feedback.
Update: (from reader mail in early June)

"News on a female Mini DisplayPort to male DVI adabpter
Mike, One of your other readers was talking about this and how the company Circuit Assembly was working on this. They have a page on their website's blog discussing this:
Are You Making A Mini Displayport Female to DVI Male Adapter Cable?
They are asking for people to comment to see how much interest there is in this product. Apparently, it will take some doing, but they say it is possible.
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Apple Support/Info/Troubleshooting Doc Updates

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