Basically a SSHD is nothing more than a hard drive with a very deep cache (SSD). The drives hardware manages what should be held in this deep cache depending on how often it is called. So as an example your OS files and maybe some app files. If you constantly reload a given file it too maybe cached.
SSHD's are a good half step as larger SSD's are still quite expensive! A 1TB SSD drive is still over $400 U.S.
Some systems can't support two internal drives (i.e. HD & SSD) so a SSHD is a good option. If your system can support two SATA drives then getting a small sized SSD in conjunction with a standard HD could offer still better performance either as a fused drive (Apple Fusion Drive) or discreetly.
The other option here is a dual drive like Western Digital's Black2 drive. This is really two drives (HD & SSD) in one device. So far they only offer a 2.5" drive and is not very large and is a SATA III (6.0 Gb/s).
Here is the IFIXIT guide to replace your current HD: iMac Intel 27" EMC 2309 and 2374 Hard Drive Replacement.
If you are thinking of giving up your optical drive for a second drive this is the IFIXIT guide to follow: Installing iMac Intel 27" EMC 2309 and 2374 Dual Hard Drive and here is the IFIXIT drive carrier: 2.7 mm SATA Optical Bay SATA Hard Drive Enclosure.
Then you could go with a straight SSD in it and a standard HD to replace your current HD. I don't recommend going with a SSHD if you plan on using a SSD with it as most people want to create a Fusion drive set (combining the SSD with the HD as one virtual drive letting the OS manage the file placement). If you do plan on keeping the drives independent then there is no issues.
Here is the Apple P/N's for the thermal sensor cables if you go with a different HD or install a SSHD.
- 922-9223 - Hitachi
- 922-9224 - Seagate
- 922-9225 - Western Digital
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6 Commenti
You do want to make sure your systems firmware is up to date here and remember the SATA port speed of this system is SATA II (3.0 GB/s) so the drive you get needs to run at this speed or have a way to set it's speed via a jumper.
da Dan
can you tell me what is a jumper and direct me to a nice one?
thanks
da carlostimon
The jumper would be on the drive if it has one. Not all drives need a jumper as they are auto sensing of the systems SATA port speed.
da Dan
So please Dan sorry I'm such a noob.... But I'm about to get this one Seagate® Desktop SSHD 2TB
SATA 6Gb/s, (SATA 3.0), 64MB Cache, MLC 8GB NAND Flash, 3,5"
Is that going to be ok for my iMac?
da carlostimon
Do I need a heat sensor for that as well ?
da carlostimon
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