I've just received my G9 1.5 Ghz, 1 GB RAM, 16 GB storage.
It seems that there is some confusion about this model all over the internet. This is the 502036 model, as the sticker on the box confirms. I'm sure that future stocks will make these points mute but for now its worth noting the following.
This does not come with Android 4 ICS installed, it comes with Honeycomb 3.2, there is a sticker on the box to say its ready to upgrade to ICS. I did this from 'check for updates' on the device without a problem (Current version as of writing is 4.0.5). I have heard some people say you have to manually download it from the Archos website. Either way I would advise doing this before setting anything up, I had to set my email up after upgrading my original G9 1 Ghz.
MOST IMPORTANTLY, under Honeycomb, you will only see 1/2 GB of memory, NOT 1 GB. However when you have upgraded the OS to ISC, you see the full amount (which is about 890 MB actual available).
I have done a system check with an app from the market to double check the CPU and it is 1.5 Ghz.
Hope this is of help to anyone looking at buying this. I see that Amazon are currently investigating this and have taken it off sale, but I can confirm the one I got was correct, apart from having to manually update the OS which is no great problem.
UPDATE - Amazon have this on sale again but now list it at 512 MB - Obviously not done their homework! Maybe they should read the review of those of us who have bought them. This definately DOES have 1 GB.