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Differences What are the advantages of each

Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

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Significantly higher clock speed 4 GHz vs 3 GHz Around 35% higher clock speed
Higher turbo clock speed 4.2 GHz vs 3.5 GHz More than 20% higher turbo clock speed
Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Much lower typical power consumption 73.94W vs 113.75W 35% lower typical power consumption
Significantly newer manufacturing process 14 nm vs 22 nm A newer manufacturing process allows for a more powerful, yet cooler running processor
Significantly better CompuBench 1.5 video composition score 13.68 fps vs 5.39 fps More than 2.5x better CompuBench 1.5 video composition score
Better PassMark (Single core) score 2,349 vs 1,994 Around 20% better PassMark (Single core) score
Much lower annual home energy cost 21.92 $/year vs 33.73 $/year 35% lower annual home energy cost
Much lower annual commercial energy cost 79.72 $/year vs 122.64 $/year 35% lower annual commercial energy cost
Newer Jul, 2015 vs Jul, 2014 Release date a year later
Front view of Intel Core i7 5960X

Reasons to consider the
Intel Core i7 5960X

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Significantly more l3 cache 20 MB vs 8 MB 2.5x more l3 cache; more data can be stored in the l3 cache for quick access later
More cores 8 vs 4 Twice as many cores; run more applications at once
More threads 16 vs 8 Twice as many threads
Significantly better PassMark score 15,994 vs 11,109 Around 45% better PassMark score
Significantly better performance per watt 7.19 pt/W vs 3.49 pt/W More than 2x better performance per watt
More l3 cache per core 2.5 MB/core vs 2 MB/core 25% more l3 cache per core
Better performance per dollar 0.99 pt/$ vs 0.91 pt/$ Around 10% better performance per dollar

Benchmarks Real world tests of Core i7 6700K vs 5960X

CompuBench 1.5 (Face detection)

Core i7 6700K
26.72 mPixels/s
Core i7 5960X
10.69 mPixels/s

CompuBench 1.5 (Video composition) Data courtesy CompuBench

Core i7 6700K
13.68 fps
Core i7 5960X
5.39 fps

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Core i7 6700K
6,010 MB/s
Core i7 5960X
4,120,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs


Core i7 6700K  vs
Clock speed 4 GHz 3 GHz
Turbo clock speed 4.2 GHz 3.5 GHz
Cores Quad core Octa core
Is unlocked Yes Yes


Has a NX bit Yes Yes
Supports trusted computing No No
Has virtualization support Yes Yes
Instruction set extensions
Supplemental SSE3
AVX 2.0
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 91W 140W
Annual home energy cost 21.92 $/year 33.73 $/year
Annual commercial energy cost 79.72 $/year 122.64 $/year
Performance per watt 3.49 pt/W 7.19 pt/W
Typical power consumption 73.94W 113.75W


Architecture FSB QPI
Number of links 0 0
Transfer rate 8,000 MT/s 0 MT/s


Core i7 6700K  vs
Architecture x86-64 x86-64
Threads 8 16
L3 cache 8 MB 20 MB
L3 cache per core 2 MB/core 2.5 MB/core
Manufacture process 14 nm 22 nm
Max CPUs 1 1


Overclocked clock speed 4.61 GHz 4.47 GHz
Overclocked clock speed (Water) 4.77 GHz 4.6 GHz
Overclocked clock speed (Air) 4.61 GHz 4.47 GHz

integrated graphics

Label Intel® HD Graphics 530 N/A
Number of displays supported 3 N/A
GPU clock speed 350 MHz N/A
Turbo clock speed 1,150 MHz N/A

memory controller

Memory controller Built-in Built-in
Memory type
Channels Dual Channel Quad Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 6,400 MB/s
Maximum memory size 65,536 MB 65,536 MB
Intel Core i7 6700K
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Intel Core i7 5960X
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Showing 25 comments.
Funny Discussion, some Infos are completely off, as a CPU the 5960x is far superior, 4 lane DDR 4 as a start. More power for less than 1/3 of the cost? certainly :D I completely agree that for 99% of the people around the 6700k bears more than enough power. At the level of both CPUs you are most certainly talking about a system with a dedicated GPU, so if you are going for power gaming 5820x is probably the way forward. And Multithreading is state of the art, you wont require 12 threads for a Game for a long time, but games today do use 12 or more threads, a good example would be Witcher 3.
It's higher counting iGPU, which should not be counted. CPUBoss has become shitty, started counting iGPU into ratiing
So how does CPUBoss say 5960X is winner when 6700K has a higher CPUBoss score? This site is so weird.
except that Vulkan and DX12 utilize all 8 threads. And people do far more than just GAME on a PC.
for the future, the 5960x will be better. Games are using more and more cores these days and the hyperthreading of the 6700k will only get you so far.
which one is beast for HD future gaming? Intel Core i7 6700K vs Intel Core i7 5960X (no money issue)
That doesn't mean it can't be used for gaming.
thing is Broadwell-E isnt built for gaming.
i m with 6700k, no game uses 8 core yet.
I'd say wait until Broadwell-E is out, and see how that alters the 5960X price. With Broadwell-E, you'll get 10 cores instead of 8. Alternatively, the 6700K is a solid chip, miles ahead of the first generation i7s (the early i7s were closer in performance to Core2 Quads than the i7s we have today). Either way, you will notice the difference, but you said 4 cores (and 8 threads) have always been more than capable for you, then the 6700K might be the better option. In terms of performance, it's more like 8 Core i7-960 cores when you can use the multithreaded horsepower of the chip.
Back when the I7-920 was release, i bought it. Its been 8 YEARS, and it still does everything I ask of it. Never a slow down, plays all the games, it was the best purchase I ever made, Having 4 cores and 8 threads with a good amount of RAM there isn't much I can not do. But it's time to upgrade and I am torn between these two. In my 25+ years working with PCs, buying the best you can afford has always been my rule. When it comes to PC components, YOU GET WHAT YOU PAY FOR has always been 100% true. I have never upgraded a PC that was less than 6 years old this one is 8 years old. But 1k for just the processor is kinda out there but I can see in the future when the extra cores and threads will be handy. I am looking at a deal at HP with the I7-5860X, with 16GB DDR4 RAM, Nvidia 970 4GB with other junk stuff 1GB HD, DVD, Wifi 11AC card, etc for around $1700 ish. Seems reasonably priced. Thoughts? I retired from the business a while ago, just want something that will last at least 5 years and up to 7 years if I get lucky. Thoughts?
Not true since the i7s use the same i5 clock speeds, but there's a 30% increase from SMT. They are all the same processor underneath, just the i3s run at slower speeds with more dud transistors.
This site is absolutely ridiculous.
i have a core i7 4790k and i use some of it for gaming and some for my mac osx virtual machine
Not in all cases are games more GPU extensive, most of the top IPs out there today, Guild Wars 2, Blade and souls and many other are incredibly CPU dependent, although I understand a good GPU will benefit from it too.
Well I have used the core I5 which functions is very latest and I’ve played games on it.
well... by that logic, the 6700k still loses compared to most i5s or even i3 in certain cases
pretty much in this situation price isn't really supposed to be a big factor i7 5960x can overclock to 4.7GHz
no way to compare the fifth generation is much better than the sixth one, so don't go so far i7 5820k which is with 6 core is so powerfull than i7 6700k which is with 4 core so what about to compare i7 5960x with 8 core with than weaker i7 6700k
I have to agree with ユキ 歌愛. From a gamer's perspective, the i7 6700k is a far better choice in terms of price to performance ratio but if you are just going to use it for gaming then the i5 6600k is a great deal as well. The 5960x is better suited for intensive multithreaded applications and or running multiple VM's simultaneously. They are both excellent processors but have different attributes that pertain to their specific markets.
Perhaps I'm not reading your comment right.. But the 6700K supports 64gb of RAM as well.
The price difference makes this comparison unbelievably silly.
Makes sense to a degree. Gaming is more GPU based than CPU based anyway. If that's all you do with your rig then it will suit you fine and save some money in the process. On the other hand you'll need a 40 lane processor if you intend to use more than 2 graphics cards and hope to get proper performance out of them. That's on top of all the other features that use the PCI Express bus; partly why on mainstream boards they have to start sharing those lanes with other devices which isn't something you can typically do at the same time. Usually comes at a reduction in bandwidth of a PCI-E slot to drive other devices. Gaming isn't the sole thing I do on a computer. If you run other processes in the background you'll find this 8 core chip is going to be best for that but also depends on your budget as well considering the price premium you're paying for the Extreme Edition chip. But there are people out there who do develop these games you play where these cores come in ridiculously handy. Indy gaming is a booming business as well. But if you think this chip is too much? Check out the Xeon E7-8890 v3. It runs a little over $7,000, has 18 cores, supports 1.5 Terrabytes of ram yet it only has 32 PCI-E lanes and runs stock at 2.5 Ghz. Probably not going to be the best chip for gaming especially at that price point. That's why when you are looking to buy a CPU you have to factor in your needs and not everyone is just playing video games on their computers. Also, so are you aware systems that use this Xeon processor tend to run 2-4 of them in one system. That's why it's a server-class processor. These are built for extreme multitasking. That's why there's these lower end chips that do quite well for the needs of the mainstream. That's why this new i7 6700K is targeted to people like you that just pretty much play video games and do not have much of a need of a higher end gaming system with 3-4 video cards running at full speed and where 32 gigs of ram is perfectly fine. The work I do.. 64 gigs of ram is more ideal so I cannot even consider the 6700K. Fortunately of course there are less expensive versions of this extreme edition processor that will support my needs and can easily outdo this 6700K with a bit of overclocking.
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