ilynjm112810 :
Clock speed alone won't get him where he needs to be in the future though.... If we could just stick with 7 year old chips, they wouldn't sell new ones. He can overclock it with a decent cooler, it will play mainly any game out right now but when will 1600Mhz RAM speeds become not enough? Especially when a $110 Ryzen 3 will spank it with far less heat.... I am hesitant on making the jump to DDR4 myself so I get where he is coming from but by the time he buys a nice Z77 board, a nice cooler and more DDR3, he could have got a nice Ryzen setup with much faster DDR4. That is just my $.02, if you can find a good board cheap or already have a good Z series board that can overclock, it may be worth it, for a little while. If you want to stay ahead of new games as they drop, get something newer.
This is why we don't listen to marketing. The only reason I updated from a P67/2600k/DDR3 1600 system to a Z170/6700k/DDR4 3200 system was motherboard options. At 1440p I saw exactly 0 more frames per second at 1440p with the same 980 Ti used on both systems. Same games installs. I just moved my Steam drive to the new computer.
but when will 1600Mhz RAM speeds become not enough?
I know of exactly 2 games that scale with faster RAM. Arma 3 and Fallout 4. That's it.
At 1440p and up you are almost entirely dependent on the GPU. Once you reach a 'good enough' level with the CPU that won't bottleneck the graphics card there's no need for more.
Why do faster chips exist? 1) CPU manufacturers don't build CPUs for gamers. Productivity increases with generational improvements. 2) New architectures are more efficient. This matters very little to a home user. A company buying 10,000 computers will see real results in lower electricity bills though. 3) New instruction sets ( see number 1 ) and 4) To make money.