Retina Macbook Pro 8gb is actually 16gb

[Puevlo]

How much paging are you really going to get with 8gb or RAM? At least we know why Apple charges so much for memory; every GB is actually worth double.

 

[Rhyalus]

Addressable space on modern CPUs is not constrained by the amount of installed RAM. Its called 'virtual memory'. You can easily allocate much more memory than available RAM, its the job of the OS to manage your data (which entails using your HDD/SSD as RAM 'extension', which people refer to as 'paging out'). It is correct that SSD allows for much much faster paging (due to its very low latency) — still what the Apple guy is saying there is just a poor marketing BS. But well, many of these guys don't know anything about computers...

Yes, I know this, but HD swap space is so much slower and this is not really relevant to the original question. (even with an SSD)

You still can't run a program that needs more than the DIMMS provide, at least with any degree of reasonable functionality.

16GB RAM does not equal 8GB of RAM and an SSD, no matter how you look at it.

R

 

[bobr1952]

It would seem to me that is a good reason to upgrade RAM since with somewhat limited space on your SSD, not having to take up valuable space with page outs would be a benefit.

 

[Rhyalus]

It would seem to me that is a good reason to upgrade RAM since with somewhat limited space on your SSD, not having to take up valuable space with page outs would be a benefit.

Actually.....

For Windows 7, anyway...

Page files are the same size as the amount of RAM that is installed, though you can control that and change the size and location. This means that with more RAM you actually take up MORE of the SSD.

I know that this is also true for Mac - this is how the system writes the memory contents to the drive if you put it into (deep) sleep. I am not sure where the file is, though.

R

 

[vbtwo31984]

To give some indication of just how much crap is talked by Apple staff, I overheard one of the sales staff in the Apple Store say, today, and I quote:

"This isn't just the most high resolution Mac that we've ever made, it's the greatest Mac we've ever made, period."

Keep in mind, I live in Scotland, and we don't say period. Cringeworthy stuff.

Hey, I heard a guy in an Apple Store about a year ago tell someone that the reason they don't sell unlocked iPhones is due to FCC restrictions. "The FCC does not allow us to sell unlocked iPhones." This was about 4 days before they announced that they will start selling unlocked iPhones in the US.

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Actually.....

For Windows 7, anyway...

Page files are the same size as the amount of RAM that is installed, though you can control that and change the size and location. This means that with more RAM you actually take up MORE of the SSD.

I know that this is also true for Mac - this is how the system writes the memory contents to the drive if you put it into (deep) sleep. I am not sure where the file is, though.

R

Page file and hibernate file in Windows are 2 different files. You can turn off paging, but hibernate will still work fine. I have no idea why by default they make the page file to be twice the amount of RAM. If you have more RAM, you should need less paging, not more.

 

[balthusdire]

Yeah whoever said this is wrong. 8GB RAM is 8GB RAM.

 

[bigjnyc]

To give some indication of just how much crap is talked by Apple staff, I overheard one of the sales staff in the Apple Store say, today, and I quote:

"This isn't just the most high resolution Mac that we've ever made, it's the greatest Mac we've ever made, period."

Keep in mind, I live in Scotland, and we don't say period. Cringeworthy stuff.

Well if thats what the Senior vice president of hardware for Apple is saying, then I don't see anything wrong with a retail store employee repeating it. Thats different from giving false information.

 

[nowayout]

So the 16GB ram on my rMBP is actually 32GB? WOW, I'm stoked!

I knew there was a reason the ram upgrade cost $200! 🙂

 

[NutsNGum]

Well if thats what the Senior vice president of hardware for Apple is saying, then I don't see anything wrong with a retail store employee repeating it. Thats different from giving false information.

But... Period.

That, and it's a completely unquantifiable statement. It's not the best Mac for somebody.

 

[ZipZap]

I had a genius tell another customer that he could upgrade the ram of the rMBP in store.

Told him he was wrong, and he just walked away.....so they aint well informed.