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Installing SSD in 24" iMac (early 2009)

I've been thinking about replacing my hard drive (I posted previously about this) and by looking around have noticed that SSDs have now come down in price a lot. Here in the UK there is a SanDisk 480GB Extreme SSD for 270GBP. I've heard that SSDs can make a huge difference in performance and this drive isn't far off my current storage. I also have a 4TB NAS and 1TB FW drive so I'm Ok for space.

 

I've had a look at a few Youtube videos and it seems straightforward to swap, once I have a 2.5" to 3.5" bay converter.

 

My question is are there any compatibility issues with SSDs and my iMac (24" early 2009 2.93Ghz Intel Core 2 Duo)? I understand SATA III is SATA II compatible. I also believe that my iMac model has the external heat sensor so this shouldn't be a problem.

 

Also if anyine has any experience of a 2.5" to 3.5" bay converter that fits well, it would be great to know.

 

Thanks

Hi David, SATAIII is supposed to be SATA II compatible, I'm not sure all are though.

 

Does it have a Sndforce chipset? How much over provisioning does it have?

 

Just for info see some of these...

 

https://eshop.macsales.com/MyOWC/Upgrades.cfm?&model=310&type=Internal%20Drive&so rt=pop&cat=2999

Done this upgrade a couple of times without issue David. The heat sensor is indeed an external device on this model so upgrade will not cause the fans to spin up.

Thanks guys, that is really helpful. I didn't know about the Sandforce issues with nVidia graphics cards nor about overprovisioning (I assume that both of these are to be avoided?).

 

Ideally a Samsung 840 pro would be good but a bit out of my price range.

 

I think I'll go for this Crucial 480gb SSD: https://www.ebuyer.com/497433-crucial-480gb-m500-ssd-ct480m500ssd1

 

Interestingly when I ran the Crucial SSD wizard on its site, it said that no SSDs were compatible with my model. Any ideas why that might be? They're listed on the OWC site as OK.

 

Tafftech did you use a 3.5" adpapter to fit it or just velcro it to the case?

 

Thanks again.

Basically, more over provisioning is good, it means the drive is bigger than stated, & is used for mapping out bad cells for one thing, a 120GB SSD with 7% over provisioning is actually 128GB underneath...

 

https://en.wikipedia.org/wiki/Write_amplification

 

General you want Sandforce chipset, but do you have more info on the nVidia issues?

 

OWC actually tests these things, I doubt Crucial does.

Sorry I wrote nVidia graphics cards when I meant nVidia drivers. Seen a few things on Amazon reviews, other sites and these:

 

https://discussions.apple.com/thread/4243422?start=0&tstart=0

 

https://forums.macrumors.com/showthread.php?t=1388966

 

Seems it is an issue with low negotiation speeds on 2008 models but it didn't sound good.

 

Sorry I misunderstood about over provisioning.

 

Unfortuately OWC drives are quite expensive here in the UK. The Crucial drive was listed on the OWC page and it gets good reviews on Amazon. Might do some more research on the SanDisk one. Too much choice!

 

Thanks

I think you are going to run into problems when you want to put a new SSD into the superdrive bay:

the standard HDD bay has a sata-2 (3GB/s) connector which is one step down from the modern sata-3 SSD's and those are downwards compatible: but not 2 steps without possible issues.

The superdrive slot is Ultra-ata 100 which may not work to put an SSD in.

Bua the 2.5" SSD and put it in the standard HDD slot.

CORRECTION:

the 24" early 2009 has one disk bay only, which is sata2. In general you can go downwards 1 step, thus a sata-3 could be used. Perhaps you can buy a sata-2 SSD which then is much cheaper.

Thanks LexSchellings. I'm not intending put this in the superdrive bay, only replace the exisiting HDD. I had thought that SATA III was backwards compatible to SATA II. Most drives for sale now seem to be SATA III.

Yes, as I said the ssd sata-3 is compatible downwards to sata-2.

Sandisk, Samsung, Crucial, Intel, there are a lot of good SSD's.

Some possible insight to those linked problems from OWC's site...

 

This OWC 6G SSD Model is compatible with nearly any Mac or PC model with a Serial ATA connection (SATA, SATA 2.0, or SATA 3.0) including:

  • All Mac Pro models
  • All PowerMac G5 models
  • All MacBook Pro models NOTE exceptions below
  • All Mac mini 2006-Current (All Intel Models)
  • iMac 2006-current  (All Intel Models)
  • iMac G5
  • All MacBook models NOTE model exceptions below
  • Xserve 2009

Special note for specific 2008-2010 MacBooks & 2008-2009 MacBook Pros.

We highly recommend the use of a SATA 2.0 (3Gb/s) SSD such as the OWC Mercury Electra 3G for the following Macs:

MacBook Pro models with model ID:

How to find the model ID

  • MacBookPro5,1
  • MacBookPro5,2
  • MacBookPro5,3
  • MacBookPro5,4
  • MacBookPro5,5

MacBook models with model ID:

How to find the model ID

  • MacBook5,1
  • MacBook6,1
  • MacBook7,1

While a 6G SSD does function, it will only do so at SATA Revision 1.0 (1.5Gb/s, 150MB/s) speeds rather that the SATA Revision 2.0 (3.0Gb/s 300MB/s) speed the computer can deliver.

The Mercury Electra 3G SSD is the OWC recommended upgrade option for the Macs listed in the special note above.

I think I'm now going with Samsung but my final question is 840 or 840 pro:

 

https://www.dabs.com/products/samsung-512gb-840-pro-series-sata-6gb-s-2-5--solid- state-drive-8BNT.html

 

https://www.dabs.com/products/samsung-500gb-840-series-sata-6gb-s-2-5--solid-stat e-drive-8BNY.html

 

Bearing in mind this is for a 2009 Mac is the pro version worth it?

 

Some good cashback deals here in the UK bring the 500GB 840 to 220GBP.

 

Thanks again for everyone's advice.

Well, looks the the diff is a 5 year warranty vs. 3 yr warranty, on HDDs I don;t think I've ever gone wrong getting the more expensive longer warranteed ones.

 

Curiously, the cheaper one doesn't stae MTBF under non existent Reliabilty...

The differencepro vs non-pro is the larger "over-provisioning" in the pro:

this means that when a spot is considered faulty by the ssd, it will be replaced by a spot in the extra space, this extra space is larger in the pro than in the normal one. The extra space is not used as user space.

SSD have a longer lifetime than HDD and I expect that the 840 has a much longer lifetime than your computer, I never use the pro versions.

Hi David. I'd also like to perform this upgrade. Did you finally go through with it? What model did you use? Did you run into a fan issue I've been hearing about?

最后更新：2017-10-14 10:19:53

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