Approximate Purchase Date: Probably this week or the next.
System Usage from Most to Least Important: Gaming, Office, Videos
Parts Not Required: HDD, DVD-RW, OS
Parts Preferences: nVidia, Intel
SLI or Crossfire: Neither.
Monitor Resolution: 1440x900, 1280x800
RAM: Kingston 4GB/1600MHz DDR-3 HyperX Blu ( Might upgrade later to 8 GB )
Motherboard: Gigabyte Z68AP-D3 Intel Z68 LGA1155 ATX
PSU: Hipro 580W, Pfc+, Eff: 80+
SSD: Kingston 60GB SATA3 2,5" (SVP200S3/60G) SSD ( for OS )
Reason for upgrade: My current rig - x2 3800+, 9500 GT - can't handle the newer games like - GR: Future Soldier, Max Payne 3 ( Not even in 720x480 res )
Question: i3-2120+560GTX or i5-2500K+550GTX-Ti
My budget is very limited and I don't know which pair would be better. ( Can't afford both )
I mainly play games like Skyrim, TheWitcher2, Fallout NV, Batman AC, AC: Brotherhood, etc. ( I like open world games )
I almost always set the details to the lowest - shadow, shaders, lighting, etc - except for the texture details and draw distance.
In my case I feel that maybe the CPU is more important, but I'm not sure. ( Low res and detail, lots of objects )
The 560 is a much better GPU, than the 550Ti. Having said that, at low res, the overclocking abilities of the i5 may compensate. I don't know, personally, what the overclocking abilities of your mobo are (check). What may be worth considering is that the prices of some of the upper mid Radeon cards have been tumbling, lately. You may be able to find something like a HD7850, at not much more than GTX560, and that would be a better choice.
What is your budget? Depending on that you may be able to squeeze in an i5 AND a decently beefy GPU.
The prices here are completely different - more expensive - that's why I didn't give a budget.
For example: i3=$175, 550ti=$160, i5=$320, 560=$230, HD7850=$290 ( the cheapest Sapphire )
The i5 is very expensive... so I'm not sure it's worth the price... and I can upgrade later if I want.
n the other hand the GPU is not that much more expensive...