Just received my CTO 15 i7 500gb 7200rpm and guess what? Apple is still CAPPING the SATA 3Gbps chipset at 1.5?! (see pic below, notice "Negotiated Link Speed") Is this barrier removed if you put in a SSD? I'm still on the fence on placing an order for an Intel 160gb SSD...
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Apple Does it again SATA 1.5 in a 2010 i7 MBP 15!
- Thread starter magbarn
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Doesn't this just mean, the interface negotiated with the HDD, that S-ATA 1.5Gbps would suffice?
My 2007 Aluminium iMac shows this:
I'm confused, but the 1.5Gbps are still more than efficient with its 148MB/s
My 2007 Aluminium iMac shows this:
I'm confused, but the 1.5Gbps are still more than efficient with its 148MB/s
Doesn't this just mean, the interface negotiated with the HDD, that S-ATA 1.5Gbps would suffice?
My 2007 Aluminium iMac shows this:
I'm confused, but the 1.5Gbps are still more than efficient with its 148MB/s
Could be as my iMac's HD is 3Gb/s but SuperDrive is 1.5Gb/s (link is 3Gb but negotiated is 1.5Gb). Both use NVidia MCP79 AHCI chip
The chipset is fine - it's the drives they are shipping that negotiates the 1.5Gbps link speed. Look at mine with a Samsung 3.0Gbps drive. My Seagate 7200K 500 is only 1.5...
The 2.5" drive is not fast enough to max out the 1.5 so I'm OK with the shipping drive not being 3.0.
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What about people with SSD's? Are your 2010 MBP's also capped at 1.5? I have a Retail Seagate 7200.4 500gb I'm going to put in the computer for a test-drive and see if it's just a artificial firmware cap placed by Apple on seagates.
Its just some of the drives they use people!
Shame how its kinda funny I buy the i7 2.66 AG, and I get a 1.5 drive
What Id like to know, straight from Toshiba's website:
Further design optimizations boost the durability of the MKxx55GSX line-up, providing industry-leading robustness against shock while the drives are in operation. An operational free-fall sensor (FFS) feature further protects the drive and user data against potential damage from shock, vibration and rough handling. The MKxx55GSX products support a 3 Gb/sec data transfer rate and have passed testing by the Serial ATA International Organization (SATA-IO) for SATA interoperability.
WTF
Shame how its kinda funny I buy the i7 2.66 AG, and I get a 1.5 drive
What Id like to know, straight from Toshiba's website:
Further design optimizations boost the durability of the MKxx55GSX line-up, providing industry-leading robustness against shock while the drives are in operation. An operational free-fall sensor (FFS) feature further protects the drive and user data against potential damage from shock, vibration and rough handling. The MKxx55GSX products support a 3 Gb/sec data transfer rate and have passed testing by the Serial ATA International Organization (SATA-IO) for SATA interoperability.
WTF
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Youre right it doesnt matter, but if the drive is SATA30 and the computer is, it should be so, period. Im wondering if Apple has a custom firmware on the Toshiba.
I could really care less, since none of these drives can even touch SATA 150
Nice join date alphaod, haha
The "negotiated" speed is a new form they added; so if this was ever an issue before we would not know as it was not viewable previously.
So it's possible the Macs have had this phenomenon for a while, just that no one could tell.
Which macs?
The first gen non unibooty mac has a 1.5Gbps bus even when using an SSD (I should know
)Then the unibooty ones brought 1.5Gbps, in which everyone on the boards freaked the heck out. The firmware update resolved that issue.
But yes, the latest MBP will negotiate whatever speed is necessary.
2010 i7 17" shows 3 Gigabit for both my SSD and my ExpressCard SSD. Only the Superdrive is 1.5 Gigabit.
the link speed is the bandwidth limit of the actual connection
the negotiated speed is the actual connection speed and determined by the attached drive.
Most 5400 and even some 7200 will connect at 1.5 while SSD drives will typically connect at 3.0
So to make it even more clear, if your negotiated connection says 1.5 but you later replace that drive with say an SSD that connects at 3.0 than your negotiated speed with say 3.0
the negotiated speed is the actual connection speed and determined by the attached drive.
Most 5400 and even some 7200 will connect at 1.5 while SSD drives will typically connect at 3.0
So to make it even more clear, if your negotiated connection says 1.5 but you later replace that drive with say an SSD that connects at 3.0 than your negotiated speed with say 3.0
So heres my question/issue with all this guys:
If OSX now auto negotiates based on hard-drive need, and I have a SATA300 Hard drive as stated by specs on TOshiba site (note this is the stock APple HD), then why isnt it kicking to 300? Does apple load custom firmwares?
If OSX now auto negotiates based on hard-drive need, and I have a SATA300 Hard drive as stated by specs on TOshiba site (note this is the stock APple HD), then why isnt it kicking to 300? Does apple load custom firmwares?
I use multiple VMs in Virtualbox and went with a ST9500420AS 7200 RPM drive and made sure it was a SATA 3 GB drive. I'm kind of shocked Apple would ship a new MBP with a 1.5 GB drive.
Like I said, I'm doing multi-vms so I'm trying to push the drive as hard as I can...
well that was my huge surprise today when i looked at the info concerning my stock HD (new 13" MBP)
i thought that Apple did it again but it finally comes from the HD
why the hell would Apple cap the speed to 1.5 Gb ????
to save some battery juice ????
or is it an old HD with SATA instead of SATA II ???