Moving away what with the? They're not.ambientidm wrote:apple is moving away from all user upgrades unfortunately
i am running yosemite on my late 2011 mbp with a newly installed 1gig transcend jetdrive
no issues other than yosemite is buggy and safari is slow super buggy and awful
Yeah, upgrading from Windows 7 to Windows 8 went smooth as sailing on a sunny summer day for all music producers. Yes sir, indeed-dee, not a problem in sight.Buleriachk wrote:I'm SO happy with my W ..... uh, oh, never mind...
Stromkraft wrote:Yeah, upgrading from Windows 7 to Windows 8 went smooth as sailing on a sunny summer day for all music producer. Yes sir, indeed-dee, not a problem in sight.Buleriachk wrote:I'm SO happy with my W ..... uh, oh, never mind...
Yea, fortunately it didn't format External HD at least.Stromkraft wrote:Yeah, upgrading from Windows 7 to Windows 8 went smooth as sailing on a sunny summer day for all music producer. Yes sir, indeed-dee, not a problem in sight.Buleriachk wrote:I'm SO happy with my W ..... uh, oh, never mind...
That's more like it!Buleriachk wrote:Windows 8? What's Windows 8?
Curious about this? I'm about to instal a Samsung XP941 M.2 PCIe SSD in my Mac Pro. From what I've been told for most people using a computer in a non server based application, IE not writing 10GB on the daily, TRIM is not really an issue if the SSD itself has decent garbage collection and you have a decent amount of free space on the SSD.fishmonkey wrote: the situation isn't as clear cut as OWC makes out.
OWC SSDs use Sandforce controllers, and one of the reasons OWC recommended against enabling TRIM was because an earlier version of the Sandforce firmware had a TRIM-related bug.
TRIM doesn't tend to help Sandforce controllers much as they rely on automatically compressing and decompressing data going to/from the drive, and hence use different garbage collection algorithms. the downside of this is that Sandforce-based SSDs tend to be slower with incompressible data. btw, Sandforce themselves actually recommend using TRIM.
the reliance on TRIM is definitely worth thinking about though, also because TRIM is only a SATA command. so if you are using an SSD over a PCIe, USB, Firewire, or Thunderbolt connection (e.g. in an external enclosure), then you don't have TRIM available either...
yep, if the drive has decent garbage collection then you will get only a modest performance boost from TRIM. it will reduce write amplification, however, as you say, if you're not writing a large amount of data then that won't matter much either...Machinesworking wrote:Curious about this? I'm about to instal a Samsung XP941 M.2 PCIe SSD in my Mac Pro. From what I've been told for most people using a computer in a non server based application, IE not writing 10GB on the daily, TRIM is not really an issue if the SSD itself has decent garbage collection and you have a decent amount of free space on the SSD.fishmonkey wrote: the situation isn't as clear cut as OWC makes out.
OWC SSDs use Sandforce controllers, and one of the reasons OWC recommended against enabling TRIM was because an earlier version of the Sandforce firmware had a TRIM-related bug.
TRIM doesn't tend to help Sandforce controllers much as they rely on automatically compressing and decompressing data going to/from the drive, and hence use different garbage collection algorithms. the downside of this is that Sandforce-based SSDs tend to be slower with incompressible data. btw, Sandforce themselves actually recommend using TRIM.
the reliance on TRIM is definitely worth thinking about though, also because TRIM is only a SATA command. so if you are using an SSD over a PCIe, USB, Firewire, or Thunderbolt connection (e.g. in an external enclosure), then you don't have TRIM available either...
I would really rather not hack the OS to enable TRIM, and I would rather just install Yosemite on it.
I'm not too worried about this issue though, considering the XP941 is twice as fast as the SATA SSDs it's got a lot of room before the performance drops to a mere 550mbs.
Just for fun I'll bookmark this thread and report back.fishmonkey wrote: yep, if the drive has decent garbage collection then you will get only a modest performance boost from TRIM. it will reduce write amplification, however, as you say, if you're not writing a large amount of data then that won't matter much either...
Interesting find for sure. I'm going to run my experiment of not enabling TRIM for a period of six months first, if there's a drop in performance after then this looks like an elegant solution.ambientidm wrote:try this
was recommended to me by an apple tech support guy
http://chameleon.alessandroboschini.com