nomadsong.blogg.se - march 2022

2010 MAC PRO SSD SERIES

Integrated Intel HD chip and dedicated nVidia card with Optimus Core i3 LV (or ULV) with Core i5/i7 LV/ULV option (add thickness if necessary)

quiksilvr - Tuesday, Octolink Okay, here is my attempt (and I know this will never happen because it makes too much sense)Īnd as shocking as this may seem to Mac users, this is still a major premium over PCs.

The MacBook Airs in their default configuration have better IO performance than any other standard config Mac sold on the market today, including the Mac Pro. It could’ve been a lot better but it could’ve been a lot worse. Overall I’m pleased with Apple’s SSD selection. I don’t have a good way of measuring whether or not there’s GC enabled on the drive in OS X, but I suspect Apple is (at least it appears to be doing so on the Mac Pro’s SSDs). And second, if there’s any idle garbage collection in Apple’s custom firmware for the Toshiba controller it should be able to keep the drive running at peak performance even without TRIM supported in the OS. First, through normal use the drive should be able to recover its performance over time (assuming you give it enough spare area). The resulting performance drop was noticeable, but not unbearable:Ī single pass of sequential writes restores performance to normal: I filled the drive with garbage and then tortured it for 20 minutes with random writes. While Apple would’ve been better off striking a deal with Intel or SandForce for the controller in the MacBook Air, the Toshiba controller isn’t horrible.Īs I mentioned earlier, resilience is very important as OS X still doesn’t support TRIM. Random write performance is of course the weak point, but you’ll notice that it’s actually higher than the Kingston drive that uses the same controller. The random read/write performance of the new MacBook Air SSD isn’t terrible: And fortunately, Apple hasn’t only focused on sequential performance. While most value SSDs top out at under 100MB/s, we get nearly 200MB/s sequential reads and writes out of the SSD in the new MacBook Air. Apple and Toshiba apparently do just that. With the right firmware, you should be able to extract a good deal of parallelism from this architecture.

But each one of those four devices has at least 16GB of NAND, spread across multiple planes and die. Typically that would mean some very low transfer speeds, particularly on writes. The SSD only has four NAND devices on it. Even the new MacBook Airs don’t ship with a version of OS X with TRIM support. This is very important because although OS X 10.6.4 has a field for reporting TRIM support on an SSD, the instruction isn’t actually supported by the OS. Its performance hardly dropped as a result of normal desktop use.

2010 MAC PRO SSD SERIES

I reviewed the latter not too long ago and found that it was a good drive for the money, and here’s the kicker: the SSDNow V Series Boot Drive was amazingly resilient when written to without TRIM support. It’s the same controller that’s in Kingston’s SSDNow V+ Series and the SSDNow V Series Boot Drive. The part number on the Toshiba controller may look familiar to some of you. Just as SSDs will break the traditional SATA interface barriers, we’ll see the same happen to form factors as well. There’s nothing particularly innovative about the form factor of the SSD, other than Apple did away with the unnecessary space a 2.5” SSD would require. Presumably 3rd party SSD manufacturers (ahem, SandForce partners I’m looking at you) could produce drop in replacements for the MacBook Air SSD. The SSD isn’t in an industry standard form factor, although the connector appears to be either micro or mini SATA. The 11-inch MacBook Air SSD, courtesy of iFixit iFixit already confirmed Toshiba is in the new MacBook Air with its teardown: Again, nothing can trump Apple's tight integration between hardware and software.Īpple likes to work with two different controller manufacturers for SSDs: Samsung and Toshiba.

The new Airs both go to sleep and wake up from sleep quicker than any of the other Macs, including my upgraded 15-inch Core i7 MacBook Pro. I’d be willing to bet the SSD in the MacBook Air has tight integration with OS X to guarantee quicker than normal boot times.Ĭlearly the new Air isn't instant on from a boot standpoint, but it's pretty much there from a recover-from-sleep standpoint. Apple does customize the firmware on its SSDs. You'll notice that even the SF-1200 SSD in my 15-inch MacBook Pro takes longer to boot than these new Airs. It’s even a shorter boot than my MacBook Pro with a SandForce SF-1200 based SSD in it: System Performance Comparison That time is significantly reduced compared to the old MacBook Air and any other Mac with a conventional hard drive. From a completely powered off state the MacBook Air still takes time to boot. Apple advertises the new MacBook Air as being instant on as a result of the internal SSD.