I just want a professional comparison?

So i'm about to get a new PC and was just curious how big of an upgrade would it be. The old PC i had is a

lenovo ideapad z565
-AMD Phenom(tm)II N930 quadcore 2.00 GHz
-4,00 BG ram
-win7
and if i'm not mistaken graphic card is - ATI mobility Radeon HD 5400 series

and the PC i'm about to get is a Lenovo IdeaPad G505s

(just copied this) - AMD Quad Core A8-4500M, 15.6" LED 1366x768, RAM 8GB, AMD Radeon HD 7640G + AMD Radeon R5 M230 2GB, HDD 1TB 5400 rpm
- Windows 8.1 64-bit

So those are the two PC's. I'm not really good at distinguishing these parts, so i figured an experienced person might tell me.

I want to know how big of a change is it gonna be, maybe tell it in PC video games.

Your videocard isn't much better than the previous one (low-end), it's not really meant for heavy gaming but will allow you to play a few games in low settings. But you'll have a much better CPU, more and faster RAM and also your disk is of a new generation and faster and Windows 8 has a little bit of a speed advantage over Windows 7. Just don't expect it to blow your socks off, all in all it's the same class of equipment, just an update version.
If you really want to play games, get yourself a desktop and a proper discreet gaming GPU (medium to high-end)

If you can afford it, buy at least a GTX 680 graphics card (nVidia) or HD 7950 (AMD). The latest games demand good cards and anything older is pretty much obsolete or will be in the very near future, especially if you want to go 4K. You can compare cards here… http://www.videocardbenchmark.net/high_end_gpus.html
Again the same with CPU's - you can compare them here… https://www.cpubenchmark.net/..._cpus.html

Look for a motherboard that supports DDR3, find out what CPU socket it supports and then look for a compatible CPU. All other components such as graphics cards, memory, hard drives etc will work with all recent motherboards so its just the CPU compatibility you really need to worry about. Personally I'd go for a motherboard that supports Intel CPU's rather than AMD as they're much better. Intel i7 4th generation are the fastest and most expensive - maybe an i5 would suit your needs better if you can't afford to spend that much.
You will obviously get what you pay for and the latest computers and components are very expensive. Also the more you spend the more futureproofed you should be.

Professional person here I will tell you your **** sucks ***. Your buying the cheap crap stupid ******* with there damn hp & dell's. Losers i swear.

I just wanna share my experience with oggus.com

I bought a Windows 8.1 Pro x64 key and received it 10 minutes after paid.
At first i was afraid about buying a key on their site but quicly received my key and the link to download. The link was for the english version but i asked forthe french version. Oggus.com sent me the link 5 minutes later.

The support is quick and answers to all my questions.

So i recommend oggus.com.