Good so we're back to a better question which is "i have a 800$ budget, amazon only, help me pick a computer". Now what do you actually want to do on that computer? "Game development" isn't a task, what SPECIFICALLY are you planning to do? Are you Learning or are you already doing game dev? Do you have an engine / type of game in mind? Do you have target hardware in mind for redistribution?

For example if you're going to work with a large C++ code base then compile time may matter, if you're doing C# work they don't and suddently SSD/cpu will matter less, leaving more budget on the gpu etc etc.

We just need a lot more info about what you want to do when you're on it to help you pick the right one.

Also there's portable and portable, are you going to move it around or is it a desktop replacement portable that will hardly ever move? How about battery duration, when you use it outside do you it for extended periods or not?

For example if you're going to do 2D games in C# then i don't see much diference between the low resolution one you linked and this one at 240$ (really, you won't feel much of a diference at all in practice, certainly not worth a 3.5X price jump)

http://www.amazon.com/15-6-Inch-Dual-Core-2-16GHz-Laptop-500GB/dp/B00L49X8E6/ref=sr_1_2?s=pc&ie=UTF8&qid=1411353179&sr=1-2#productDetails

I'm not saying you should pick that at all, just that we need a lot more info about your use case but those 2 choices you gave us seem like, honestly, a pretty bad deal for any use case i can think of game dev related / price ratio.

I'm going to pair it with 4GB RAM and a 128GB SSD

probably be using Photoshop

Good luck. I realize everyone has a budget. In your case it looks like the budget gives a choice between a 128GB SSD or a 1TB HD. For a single disk system, 128GB is almost guaranteed to be insufficient for serious game development tasks. Source resources are large, intermediate files are large, tools are large and resource intensive.

15 years ago a 128GB drive could have been enough. These days it is usually insufficient. For example, many of our machines have a 420GB SSD drive dedicated ONLY the images and audio and scratch files. Looking at my installation I've got over 200GB on the OS drive containing the operating system and compilers and adobe suite and all the other assorted applications.

Yeah, it can be hard when budget is a concern.

For me personally, I'd rather have a slow but big enough hard drive. Slow is annoying but not an impediment. Slow means a visit to the water cooler while you wait.

Out of space I see as an impediment. It must be fixed before you can work. What will you do if the drive is too small for a certain task? Uninstall your IDE when working on art, then uninstall your art programs when working on code?

Seems a reasonable mid-level dev system to me. At least as good as you'd get as your workstation at many companies.

Nothing to be excited about but no terrible gaps either. It'll do everything you need, it just won't be as quick as if you'd spent more money :)