After reading the article, I was doing a little research, and find that i7-5820K is the "most best-buy" for gaming & working ATM (well, a bit more expensive than i5 skylake, but not too long, it will be cheaper since most people will go to Skylake). In the benchmark I got, i7-5820k is just a little less powerfull than its sister i7-5930k, with $200 off. I just don't undertans the logic why intel made this card with IGP, since Intel HD consumes less when u just wath HD video or playing online game with little detailed graphics. Its sister, i7 4790k, with $50 off, got a nice HD Graphics 4600, but with lower performance (in the CPU benchmark, 5820k got 12997 points, while 4920k only 11226, almost 2000 points difference!)
oh, and 1 more surprising facts, a 2010, sandybridge-based, Xeon can beat i7-4710MQ ($220), Xeon E5-2620 ($503), and Xeon E3-1240 ($300). The processor is Xeon X5660, which u can buy for $125 on amazon!
This Xeon X5560 even on par in cpu benchmark with AMD FX-8320 Eight-Core (8025 points, $130), even the new released Core i7-6700HQ (8044, $378).
What I don't know, can Sandybridge-based Xeon be used to build a gaming PC? If yes, this Xeon can be a cheap Intel solution for cheap gaming PC with moderate performance (well, when u compare it to the 2012 FX-8320, the price is more or less the same).
So, for Intel-based gaming CPU, here is my BEST-BUY lists (I compare it using price/performance ratio):
Extreme: i7 5820K (12997 points, #41 of 520 in High-End CPU, #1 in affordable Extreme CPU @ $390)
High-End: Xeon E5-2660 (11891 points, #53 of 520 in High-End CPU, #1 in High-End CPU @ $245) Don't bother to buy Xeon E3-1231v3, its performance is FAR below E5-2660 by 2200 points (9615 points, rank #97 of 520 in High-End CPU, u can even save few bucks with E5-2660)
High-End (Alternative): FX-9590 (10266 points, #66 of 520 in High-End CPU @ $220). Well, u know, AMD is often a better choice for gaming, as well as more recently released than E5-2660 (2013 vs. 2012).
Mid-End: FX-9370 (9535 points, #101 of 520 High-End CPU @ $190) Save u $30, and u get almost 700 points difference,BUT if u look closely at the difference in RANKS, u know that $30 differences is BIG, since MANY MUCH MORE EXPENSIVE processors are filling in the gap of that $30.
Mid-End 2: FX-8320 (8025 points, #175 of 520 High-End CPU @ $132). Well, this one is much more mid-end CPU than FX-9370; both the prize and the performance. Again, save $60 and u get a MUCH lower performance (1500point differences), and a GREAT lower performance when u compare it to FX-9590 (2200point differences) just $90 difference, enough to buy a cheap graphic card.
Low-End: Xeon X5660 (7998 points, #176 of 520 High-End CPU @ $125). This processor is quite interesting, since it is released on 2010, but the performance of this CPU is on par with FX-8320, which is 2 years YOUNGER.
Low-End 2: Xeon L5640 (6746 points, #246 of 520 High-End CPU @ $83) This processor is also released in 2010, but this is the low-voltage version, so of course the performance won't be the same as X5660. If u can bear with 2300 points performance in exchange for saving $40, go & buy this CPU. Overall, still one of the best yet cheap CPU out there
Here are several list of High-End CPU with similar performance but much more pricier &more newer:
Intel Xeon E3-1245 (8,089 points @ $310)
Intel Core i7-4722HQ (8,064 points @ $378)
Intel Core i5-5675C (8,060 points @ $300)
Intel Core i7-6700HQ (8,044 points @ 378)
Intel Xeon X5660 (7,998 pints @ $125)
From the list, we can see that in Intel Xeon's case, we can't say that old CPU cannot keep un with the performance of much more newer CPU. We can say that ONLY when whe compare Intel core series, more specifically, consumer series. Xeon is build mainly for servers, which must be "sturdier" (both the physical & performance) than ur average Core i- series.
That's all for now. All the prices of the CPU are from Amazon. All prizes are based on NEW CPU, not refurbished or Used. For anyone who wondering where I get this benchmark information from? I get it from Passmark benchmark sites (cpubenchmark.net), and this sites is quite objective in releasing their benchmark results. And, oh yeah, ALL THIS BENCHMARK ARE PURE CPU BENCHMARK, that's why AMD won't have a chance in beating intel in terms of CPU performance