Thanks to everyone who responded to my query.
My 2009 iMac is still running very well on MacOS High Sierra, therefore I’ll 
hang on for another year to Upgrade the hadware.
It’s a credit to Apple that aniMac just runs and runs with free upgrades.
Cheers
Marcus

> On 21 Oct 2018, at 6:23 pm, Marcus Harris <[email protected]> wrote:
> 
> Hi,
> 
> I’m uncertain if I may upgrade my 2009 iMac 27 from High Sierra to 
> Mojave..and is there a benefit.
> When I checked the App store Mojave doesn’t present as an upgrade.
> The specs are as follows-
>   Model Name: iMac
>   Model Identifier:   iMac10,1
>   Processor Name:     Intel Core 2 Duo
>   Processor Speed:    3.06 GHz
>   Number of Processors:       1
>   Total Number of Cores:      2
>   L2 Cache:   3 MB
>   Memory:     8 GB
>   Boot ROM Version:   IM101.00D0.B00
>   SMC Version (system):       1.53f13
> regards
> 
> 
> 
> Marcus
> Marcus Harris
> P.O. Box 7135
> Shenton Park
> Western Australia 6008
> Australia
> Cryptodome Pty Ltd
> [email protected] <mailto:[email protected]>
> Mob: +61 (0) 417965618
> 
> 
> -- The WA Macintosh User Group Mailing List --
> Archives - <http://www.wamug.org.au/mailinglist/archives.shtml>
> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml>
> Settings & Unsubscribe - 
> <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>

-- The WA Macintosh User Group Mailing List --
Archives - <http://www.wamug.org.au/mailinglist/archives.shtml>
Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml>
Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>