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Apr 2, 2011 6:18 AM in response to Bessemby djkawada,Yeah that's totally right.
I'm and we are waiting for an update of this chipset since 3years now.
So please Apple do something for us !
Thins is really a need now because of the public introduction of the SSD's technology. -
Apr 2, 2011 6:57 AM in response to Bessemby PeteThSock,I've got a Macbook 3,1 and my SSD speeds have been hampered by the ICH-8M. It is capable of running SATA 2, but Apple artificially limits it to SATA 1.5.
It never mattered when I had a platter based hard drive, but since I've updated to an SSD my maximum speeds are 130 MB/s when they should be close to 250 MB/s. -
Apr 2, 2011 11:39 AM in response to Bessemby Bessem,Particularly in models 3.1 and 4.1, the SSD gives the beast a second life and an absolute silence but at a price that: halved performance. It's stupid ... -
Apr 2, 2011 4:38 PM in response to Bessemby S4nder,I got a macbook 4.1 and was also looking for a SSD, then after some research I found out that the controller is limited to 1.5 gb.
Is there no way to fix this? -
Apr 3, 2011 7:02 AM in response to Bessemby spheric,http://forums.macrumors.com/showpost.php?p=7835786&postcount=17MacRumors wrote:
Yes you are correct. The ICH8-M used has SATA 3.0 Gbit/s capability but is capped at 1.5 Gbit/s. There is a reason for that and it affects other laptops as well - Dell, IBM/Lenovo etcThe ICH8-M was incompatible with many SATA-PATA bridge chipsets at the 3.0 Gbit/s level. Since the SATA-PATA bridges were needed due to optical drives being PATA, you'll see this on many laptops. On Desktop motherboards where a separate chipset was used to provide IDE channels and on laptops that had no PATA optical drives, the chipset can and does provide 3.0 Gbit/s
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Apr 3, 2011 7:26 AM in response to Bessemby Bessem,I am aware that Apple is not the only one affected by this problem, however I found an article which stated that the amendment remains level software instead of hardware. So yes, Apple is stifling the ICH chipset model 3.1 and 4.1. The following models of MacBook Pro (pre-unibody) had the same problem in 2009, Apple was provided with an update of EFI numbered 1.7.
Admittedly, I did not say it was not compatible with SATA 3Gb but this limitation does not really impact when using a hard disk, but is troublesome with SSDs lately. .
Read this article (sorry it's in French): http://www.presence-pc.com/actualite/sata150-lenovo-35555/
A player has managed to activate 3Gbits on a PC Lenovo http://forum.notebookreview.com/showthread.php?p=4882948#post4882948
So it is useless to say that this is impossible. -
Apr 3, 2011 8:23 AM in response to Bessemby spheric,Feel free to risk frying your MacBook Pro with a firmware hack that will break the internal optical drive.
But to ask, let alone expect, Apple to do so for you is just silly. -
Apr 3, 2011 9:02 AM in response to Bessemby Bessem,I will not attempt anything that would jeopardize the macbook, also so far there is no procedure to activate 3Gbits. So users who are awaiting activation TRIM SSDs are stupid! What arrogance ... -
Apr 3, 2011 10:01 AM in response to Bessemby spheric,Bessem wrote:
I will not attempt anything that would jeopardize the macbook, also so far there is no procedure to activate 3Gbits. So users who are awaiting activation TRIM SSDs are stupid! What arrogance ...
I suggest you relax and read the quote I posted above through, again.
IF the explanation proposed by harshw on the MacRumors forums is correct (I have no way to verify this; it was the first plausible explanation I've found), then the reason why the speed is limited to 1.5 GBit is TECHNICAL.
If the S-ATA controller runs at full speed, the optical drive is broken.
If Apple offered a firmware upgrade, it would require replacing the optical drive.
So Apple's "arrogance" is to provide a working - but slower - solution, rather than a faster - but broken - one.
And my "arrogance" is telling you not to expect Apple to break their own hardware by offering a firmware upgrade.
I can live with that. -
Apr 3, 2011 7:34 PM in response to sphericby greg sahli,Apple employees don't generally read these posts (just administrators) - you need to post on www.apple.com/feedback. -
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Apr 4, 2011 5:53 PM in response to Bessemby Bessem,Should we expect a negative response even from them? -
Apr 4, 2011 10:21 PM in response to Bessemby spheric,Bessem wrote:
Should we expect a negative response even from them?
Probably not. -
Apr 10, 2011 9:34 AM in response to Bessemby dictvm,My Macbook Pro 4,1 is in almost perfect shape, except for the fact that I cannot upgrade to an SSD, because I wouldn't profit from the full speed due to the bus-limitation. Apple, please give us an EFI update, even if it disables the optical drive, which I haven't used because it no longer reads any media since almost 2 years.