Hey guys, just wanna share great news. I just bought an iMac 27" 5K from Harvey Norman for RM6699. Obviously not the 2017 model ( not in store yet), but I believe this is a great deal. 0% interest some more. And added in the extra 4 years of warranty from Harvey for RM1738.

Sorry for late reply. I snapped this picture specs of the iMac I bought.

Yes, this looks to be it.

So far my 27" 5K iMac is running just fantastic. Went online to OWC to purchase additional 8GB DDR3. Costs me USD60.99 plus another USD23.05 for DHL shipping. Based on exchange rate of 4.26MYR to 1USD, it's not too pricey.

Checked on 11th. Street, they sell it for RM442. And I hadn't had time to survey Low Yat Plaza shops or any other computer shops. One thing I found out was Mac memories are not the usual desktop RAMs that we can simply buy over the counter. Seeing that's the case, I didn't bother hunting everywhere and just settled for OWC. Quite a number of Mac enthusiasts recommended that shop. The other being Crucial.

It's quite easy to identify the type of iMac memories we can buy. All info is found in the top left corner of the desktop when we click on the black Apple logo. Very important to buy the same speed, latency, low voltage, unbuffered, 204-pin size and etc. The specs have to match existing RAM in the iMac. Also must buy in one pair quantity.

Both options are possible. In my case, I've opted for the former. If you have the cash though, then go for 8GB x 4. And it's highly recommended to keep the original RAMs as backup in case the newly purchased RAMs have problems.

Yes, you can mix original iMac RAMs with third party ones. But must make sure the memory specifications are the same. Those systems probably crashed because they didn't adhere to the specs. Once you have bought the iMac, you can check the proper memory configurations from the desktop itself and order the RAMs based on it.

Received my 8GB iMac RAM upgrade kit today. Just installed it and everything is good.

Hmm, it's definitely not super blazing fast. Powering up took around 20 - 25 seconds. It didn't bother me though, just go toilet to relief self a bit and when I come back to the screen, it's ready. ;-)

As for installation of some other apps, if it comes from Mac Store, it's still fast. And if it's other programs e.g. VLC and Malwarebyte, slightly longer but still below one minute.

Hi! Go to macsales.com. That's the website of US-based OWC (Other World Computing). Look for iMac RAM upgrade kits. But before ordering, better know the specifications of your RAM. Your order must exactly be the same as the RAM you currently have in your iMac.

The supplied HDD is 7200rpm, so I guess it's still better than 5400. I can't complain about that.

Btw, does anyone know what MacOS program runs 5K videos? The videos carry the extension *.r3d

No, oredi tried but cannot. Maybe vlc can play 5K but in another file format, just dunno what.

I've found a video player that can play 8K, 6K, 5K and 4K videos, especially in the r3d format. Go to www.red.com and download their redcine-x player.

Yes, different models of iMac have different RAM specs. For eg. the 2017 27" iMac is DDR4 2400MHz, 21.5" is 2133MHz speed.

And if you purchase the late 2015 iMac, the RAMs are DDR3 running at 1867MHz.

So, it is important you find out the RAM in your iMac before upgrading RAMs.

It's only half fine. To get the complete picture and full specs, click on the Apple logo on top left corner. Go to 'About this Mac'. Next, click on 'Memory'.

In that window, you'll see a small print "Memory upgrade instructions" or something like that, I can't remember clearly. <I'm on my Windows laptop currently>. Click on that small print. It will bring you to a special page that lists out exactly the RAM specs you need for your iMac. It is more detail than just "DDR4 2400MHz". Once you have that full info, then go to Macsales.com and make the purchase based on that.

<<But actually, having said all that, Macsales.com website is so good that all you really need to do is just to select you have a 2017 27" iMac 3.2GHz (for example) and it will point you in the right direction for which RAM to recommend.>> Nonetheless though, I'd still advise you to know your way around your own iMac machine and do those steps that I've suggested above.

Good luck! :-)

Oh, you ordered from Apple Malaysia online? When is it arriving?

Yeah, I agree you can upgrade memory later on after you have had time to play with your iMac first. It's already a pretty powerful machine, and better than my late 2015 version.

Have your iMac arrived now?

Ooh, fun times ahead. :-)
Congratulations on getting it. You have been really patient, I must say that.

Heavens no, avoid installing beta versions into your brand new iMac. I'm not doing it. Will just wait for official release of High Sierra. It won't be long now.