RussianSensation
Elite Member
- Sep 5, 2003
- 19,458
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Given how much better the 2600k is holding up over a 2500k today, and how slow CPUs are advancing, you could very easily keep a 6700k for years longer than a 6600k due to the 8 threads. 100% worth the small increase in price.
The issue with 6600K, even overclocked, is that in CPU demanding games, the i7 6700's per core/thread CPU usage is much lower than the i5's. Notably, the i5's per core/thread usage often spikes to 80-90% range. This may imply that as next generation games come out between 2016-2021, and these games are even more CPU demanding and more multi-threaded, the chance that the i5 will become a bottleneck increases greatly.
6700 non-K > i5 6600K @ 4.6Ghz:
https://www.youtube.com/watch?v=f9cVxka2fns
For simplicity sake, even if we take the $339 6700K and $239 6600K, assuming 50% resale value for both after 4 years, we get total cost of ownership of:
($339 6700K - $339 * 0.5 resale) - ($239 6600K - $239 * 0.5 resale) = $50 total or $50 / 4 years = $12.5 per year
Once we substitute the $304 6700 into the same equation = $32.50 overall or $8.13 per year
When we break things down like that, i5 6600K is not that great actually. The $100 price difference over 4-5 years works out to much less. I do understand that not everyone resells old parts but for those of us who do, the $100 price difference is NOT the actual cost difference of owning the product. I am not sure if it's fair to penalize the 6600K for the cost of an after-market cooler because many gamers already have one from a previous build. However, if building a new system from scratch, the after-market CPU cooler even at $15-20 only further erodes the 'value' equation of the 6600K.
After doing these TCO (total cost of ownership) calculations based on my personal experience owning Core i7 860 and Core i5 2500K, I actually built 2x 6700K systems because the 6600K just doesn't seem like a good value. If I wanted to go i5, I'd get the i5 6400 and simply overclock it. Many Z170 boards have non-K overclocking bioses available for download.
http://overclocking.guide/intel-skylake-non-k-overclocking-bios-list/
This forum and many other tech forums continue to overhype i5s since 2500K days (I fell into this trap myself). The experience of 2600K vs. 2500K alone should be enough to suggest that on the verge of 2017, the i5-6600K/7600K isn't as great of a long-term (4-5 years) play as it seems. IMHO, the foundation for a great gaming build over the next 4-5 years should be 5820K/6800K or 6700/6700K.