ganster wrote:
Do not under any circumstance purchase the momentus xt for your macbook pro. It will NOT work, no matter what the apple and seagate employees tell you.
The drive is incompatible with the macbook pro as far as I have seen on the seagate support boards.
Sorry, but you're wrong.
I am typing this on a c.2009 Macbook Pro (2.53 c2d, 4gb, 9400+9600 512mb, SL 10.6.4) and I have had no problems installing or running a Momentus XT 500GB drive. So it's simply untrue that the Momentus XT is fundamentally incompatible with Macbook Pros. Maybe it's incompatible with new MBP's, but it's not incompatible with
ALL MBP's.
When I bought this MBP, 16 months ago, it came with a 5400rpm 320GB drive. I had a 7200rpm Western Digital Black 320 lying around from a previous Windows notebook, and so I almost immediately replaced that OEM. The WD Black was a great upgrade, performance-wise, but it did produce more heat and was louder than the OEM drive. Battery life wasn't affected.
Fast forward to a couple of weeks ago, I decided it was time to bump up my storage a bit and decided to give the Momentus XT a shot. Out of the box it is running firmware SD23.
So far, it's great. I haven't been completely "blown away" by the upgrade, but it does feel that things are "snappier" than they were before. Though I'm coming from that WD Black drive, which is regarded as one of the best notebook drives on the market. After 3-4 reboots, I did notice that it seems to boot faster than ever, though I hardly ever reboot my Mac anyway, so it's somewhat of a moot point. General app performance (Aperture, iTunes, iLife, iWork, etc) is superb, with everything seeming just a touch zippier than before. It's not
dramatically faster, but I do think it's better. Could be from the fresh install of Snow Leopard, but it could be the drive. XBench does confirm that the drive is, overall, an improvement over the WD.
The XT is definitely quieter than the WD. No noise or vibration at all. As quiet as the OEM 5400. The XT also seems to put out slightly less heat than the WD, but that's hardly scientific. Battery life is a wash. It's no better or worse than it was with the WD.
Now, I do realize that there are people who report that the XT is "great" for a month or two and then performance degrades. Time will tell. If it happens to me I'll report back on it.
In previous installs (and re-installs) I've used SuperDuper to clone my HD to the new drive using a FireWire800 enclosure. I've never had any problems with that method; very easy to do. But this time, I decided to do a fresh install of SL on the new drive, then use the Migration Assistant to handle my stuff. It worked flawlessly. Installed the new XT in the MBP, put my WD drive in a FW800 enclosure, booted with the SL CD, "erased" the new drive, let SL install (30 minutes), then let the Migration Assistant copy all of my documents & apps from the WD to the XT. That process took about 90 minutes (200GB of data). Then I had about 1.5GB of updates to download (back to 10.6.4). After that, done. All documents, music, photos, apps, settings, etc where exactly as I left them. Cloned perfectly, as far as I can tell. Even my WindowsXP VM's & data via Parallels. The only "problem" (and I knew it would happen from past experience) is that TimeMachine sees that my whole system has changed and needed to do a full, multi-hour backup again rather than just an incremental. NBD.
Here's a stats comparison using XBench.
Western Digital Black 320GB 7200RPM
Disk Test 37.25
Sequential 61.67
Uncached Write 91.37 56.10 MB/sec [4K blocks]
Uncached Write 63.40 35.87 MB/sec [256K blocks]
Uncached Read 40.36 11.81 MB/sec [4K blocks]
Uncached Read 74.78 37.58 MB/sec [256K blocks]
Random 26.68
Uncached Write 8.67 0.92 MB/sec [4K blocks]
Uncached Write 75.43 24.15 MB/sec [256K blocks]
Uncached Read 69.15 0.49 MB/sec [4K blocks]
Uncached Read 146.38 27.16 MB/sec [256K blocks]
Seagate Momentus XT 500GB 7200RPM
Disk Test 41.64
Sequential 115.23
Uncached Write 88.12 54.10 MB/sec [4K blocks]
Uncached Write 165.75 93.78 MB/sec [256K blocks]
Uncached Read 84.06 24.60 MB/sec [4K blocks]
Uncached Read 184.02 92.48 MB/sec [256K blocks]
Random 25.41
Uncached Write 7.13 0.76 MB/sec [4K blocks]
Uncached Write 283.71 90.82 MB/sec [256K blocks]
Uncached Read 124.97 0.89 MB/sec [4K blocks]
Uncached Read 176.98 32.84 MB/sec [256K blocks]
Numbers don't lie. It's a good drive and I think this type of hybrid drive is the future of storage, especially in notebooks. 4GB of flash is a good start, and hopefully within a year or so we'll see more hybrid drives with much larger SSD components.