What should i upgrade first?

[lobotmia]

Hello
When i've bought Battlefield1, and saw my fps, a wild idea appeard "I need to upgrade PC".
So my pretty old "gaming rig" looks like this:
CPU - i5-760
MOBO - Gigabyte h55m-s2
RAM - 2x4Gb
GPU - MSI r9 270x 2Gb
I'm going to buy i5-6600 (or i7-4790 if price will be pretty nice), and rx480 8Gb.
Wich part should i buy at first? CPU with RAM and MOBO, or GPU at first?
I don't have enough money on my bank account, so i'm working for it.
(Not huge payout, so every part might be mine with little delay).
Also sorry for grammar issiues (i'm not native English speaker).

 

[Isokolon]

The i7-4790 isn't priced cheaper than a current generation i7
No need to go for a 6600 when the 7600 costs the same either

If your main concern is BF1, upgrade CPU/Mainboard/RAM First.
You can always turn the settings down a bit until you can afford the GPU but no matter what GPu you get, your current CPU is just not powerful enough.
Also BF1 really likes more than 8GB RAM.

So I'd go with a 7600+B250 board + 16GB RAM first
And upgrade the GPU down the line