Upgrading PC. From AMD FX-4100 to i5-4690K. Is it worth it in 2015?

Naikey

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Also planning on overclock. New PSU and motherboard (but which one?). Also planning on doing a fresh install of windows on a SSD. Would this upgrade be worth it and last for a few years.

Lately I've been very disappointed in AMD's performance in games like Arma 3

I have a GTX 750 ti FTW edition by EVGA so there shouldn't be a bottleneck.
 
Not sure how smart it is to move from 1 "dead" socket (AM3+) to another "dead" socket (LGA 1150) -- both AMD's Zen line next year & Intel's Skylake line later this year will be using brand-new sockets that won't be compatible with their forerunners.

That being said, there's a chance that whatever issue you're having isn't necessarily tied strictly to your CPU. A GTX 750Ti, for example, is not exactly a high-end GPU -- currently Tom's Hardware gives it an "honorable mention" in the sub-$150 range, because it's the fastest card that (depending on the model) doesn't require its own PCIe power connectors, but it costs more than the R7 260X (which provides the same performance, & their $115 pick) & is only slightly cheaper than the R9 270 (their $150 pick, with better performance). And poor performance could also be affected by your RAM, a slower HDD, or any other factors.

So, first off, what are your complete specs: Motherboard, PSU (make, model & wattage), RAM (speed, # of sticks, & total), OS (including 32- or 64-bit), hard drive, etc.? Secondly, what are the particular issues you're having -- FPS drops, unable to load a game, etc. -- and what games/apps are they affecting? Finally, have you tried any troubleshooting to see if maybe there's a component issue (i.e. tracert or QoS speedtest to make sure your ping & Internet connection aren't causing lag spikes)?

Based on those answers, we can help you pinpoint where some issues might be, as well as suggest some potential short-term (i.e. for a year to 18 months) upgrades that would help with performance, while you wait & see how Skylake & Zen settle out.
 


Hello spdragoo! My PC specs as detailed as I can make them:
Motherboard: Asus m5a87
CPU: AMD FX-4100 Quad-Core 3.6 Ghz
PSU: Antec Earthwatts 500W (http://www.antec.com/pdf/flyers/EA500D_flyer_EN.pdf)
Ram: 12gb. Total of 3 sticks each 4GB. DDR3 (can't tell anything else)
GPU: EVGA GTX 750 ti FTW edition
OS: Windows 7 Home Premium 64 bit

I am disappointed in AMD's performance especially in the ARMA games. Arma uses a very CPU intense engine. So it needs good single core performance which you can find from Intel.
I am just wondering how long will the best intel i5 processor be able to support latest graphics cards and games.
 
http://www.asus.com/us/supportonly/M5A87/HelpDesk_CPU/

According to the list, your board can take the FX-8320 & 8350 with BIOS version 1301, or the FX-8370 with BIOS version 1506 (as well as the 95W FX-8320E & FX-8370E chips). Currently, since your FX-4100 is a 4th-tier CPU (http://www.tomshardware.com/reviews/gaming-cpu-review-overclock,3106-5.html), replacing it with an FX-8350 or FX-8320 would put you up 2 tiers to 2nd-tier, as well as providing a significant performance improvement in CPU-dependent apps & games (http://www.anandtech.com/bench/product/1280?vs=697).

Your PSU is a Tier 2 PSU (http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html), so it should be more than fine.

RAM-wise, you're probably missing out on dual-rate speed improvements. However, at 12GB you're probably not going to notice any issues. If you really want to know what your RAM speed is, though, use CPU-Z.

As for issues with the ARMA games, it appears that ARMA 3 is a GPU intensive game (http://www.techspot.com/review/712-arma-3-benchmarks/). When they talk about a GTX Titan struggling to hit 60 FPS at even sub-4K resolutions, but they talk about how both Intel & AMD chips show definite FPS increases when OC'd, I'd say your GTX 750Ti is causing the issue more than the CPU.