Well, as you may know, Apple has recently leased the new Macbook Pro with Retina Display. So you may be asking yourself, “What does retina display mean?” The Retina Display is an increase in the pixel density by 4 times with the same amount of space. By having more pixels, you can have far more precision and a great increase in the sharpness of the text. The retina display has 220 pixels per inch. The highest supported resolution is 2880 by 1800 pixels.
The Macbook Pro with Retina display has a starting price of a whopping $2,199.00. Personally, I think this price is ridiculous, but that’s just Apple. The low end MBP with Retina display has a 15 inch screen with an i7 processor 2.3 GHz. Both of the Retina display MBP’s do come with 8gb of ram, but there is one problem. Unfortunately, Apple decided to solder the ram into the computer so you are unable to upgrade yourself. This poor decision is the main reason why I do not have any future plans on purchasing the computer. Although, if you don’t feel that 8gb is enough you can customize your macbook pro on Apple website to have 16 gigabytes of memory instead of 8, for an addition 200 dollars. Lastly, the MBP Retina display has a 256GB SSD(upgradable to 512gb). Unlike an HDD, an SSD does not have any moving parts in it, therefore it is much faster than an HDD. SDD’s usually have less capacity but provide less power draw, less heat, less noise, and are overall faster. I assume that Apple decided to use SSDs in their Macbook Pro’s because of the sudden drop in price for Solid State Drives. The reason their price has dramatically dropped is because of the Cloud. Apple’s Macbook Pro with Retina display may be extremely pricey, but it is definitely worth the money if you really need the screen resolution for precise photo editing or any other pixel related task. Also, if you are not willing to upgrade the ram yourself and desperately need an SSD than go for it!
Adam's Technology Blog 
One question. Why the hell would you need to upgrade 8 GB of RAM?
Good question. It’s because I multi-task a ton and sometimes I just need more ram so I can, for example, have my normal 20+ browser tabs open in google chrome(uses high graphics and memory), mail, Skype, IRC client, and programming Applications, like IDE’s.
Still, that’s not like you have all the Adobe, Autodesk, and the rest of what you listed open at all the time. Even 16 GB is a little much for that. Ahhhhh, I remember when 4 GB was a lot.