Ra_V_en :
The very first question...
Why do you want to change the current PC and what do you want to achieve? For me even a swap for the option above from your config is hardly any cost effective.
Your CPU is an equivalent of i3-4130, meaning it's not that bad. There is a lack of dGPU in your config so certainly you are not able to run any new games at decent settings. Is that the issue? If so why do you care about new CPU anyways, better focus on GPU then.
R9 380 non X has TDP of 190W, meaning that CX 500 should certainly be able to power it up. Most of R9 380 needs 2x 6 pin connectors while CX 500 has 2x 6+2 connectors, meaning they designed it to handle possibly even more power hungry GPU's. Over 12V you can combine 456W meaning there is still over 260W left for CPU+MOBO. If you not gonna over-volt CPU badly its quite plenty.
Ok first my cpu is slightly weaker than Athlon X4 860K that noticeably weaker than overclocked Pentium G3258 that noticeably weaker than i3 4130. Second i'm playing CPU intensive games like Space Engineer and World of Warcraft, and i'm still playing GPU Intensive games. Now for the R9 380 look at the image
it consume almost half of my PSU in full load "torture" test. Then this is what jonnyguru said at CX series:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=416(it's 750W review)
"I have no use for anything that can't do full power at forty degrees or better, and I review these units accordingly. Computer cases routinely see temperatures higher than thirty at the power supply intake, and this becomes more and more of an issue the further south you live, depending on whether or not you're buying this budget unit so you can afford to run the AC.
It also becomes more of an issue depending on where your unit is located. I have family with computers next to heating vents, because that's the only place available to put them. Guess what that does to a Canadian computer? Most of their cases don't have the newer layout where the power supply pulls room temperature air in from underneath the case, so those power supplies are taking in air heated by the vent and the computer hardware. Thirty degrees? Ha!
No, folks, thirty degrees just doesn't work for me. A unit this heavily de-rated is likely only good for 650W at a more reasonable forty to fifty degrees. It may be a perfectly decent little unit, but my hot box will not stay cool enough to make this unit happy. This is by design - my methodology is to get these things to at least forty whenever possible, because that's the lowest temperature I personally expect to get full power out of a unit. Forty is more than reasonable, even for a good budget unit.
Really, here's what it comes down to... this unit has to pass hot box testing, or there will be scoring repercussions on page six. I haven't had to use those particular scoring rules in a looooong time. Corsair, I hope you had CWT give you overtemp protection, because I think this unit is going to need it." -Oklahomawolf Jonnyguru
30 degrees? Did i live in north? i live in Indonesia and 30 degrees intake to my PSU are impossible. So let's say i only have 400W or 450W PSU