Upgrading from an APU

[Danang]

I built my PC around 2 years ago with an A6-6400k and an MSI A78M-E35 (strict budget at the time). Last year, I added a GTX 750ti. Now, I'm considering upgrading my CPU to a quad core. However, I'm not sure to upgrade, or build a brand new PC instead. The options I'm considering are:

• upgrade to X4 860k (same FM2+ socket)
• build new PC based on Skylake (6600k?) or Zen

I'm not sure if the jump to DDR4 would be worth the extra 100+ USD. Also, I'm not sure if my 750ti would bottleneck a Skylake/Zen PC. Which route should I go with? I'm not much in a hurry as I could probably wait for Zen to come out.

[dragoon20005]

save up and upgrade to the new platform

[Wreckingball]

Save for the new platform, the 750ti will most likely bottleneck, but you cant say youre not gettig your full potential out of it! And youre still going to see a rise in frame rates overall especially in cpu intensive games like Cities: Skylines