Cast your vote Do you agree or disagree with CPUBoss?

Thanks for adding your opinion. Follow us on Facebook to stay up to date with the latest news!

Intel Core i7 6700K

CPUBoss Winner
Front view of Intel Core i7 6700K

Differences What are the advantages of each

Front view of Intel Core i7 6700K

Reasons to consider the
Intel Core i7 6700K

Report a correction
Much better 3DMark06 CPU score 80.5 vs 67.7 Around 20% better 3DMark06 CPU score
Higher clock speed 4 GHz vs 3.5 GHz Around 15% higher clock speed
Much better CompuBench 1.5 ocean surface simulation score 302.88 fps vs 173.8 fps Around 75% better CompuBench 1.5 ocean surface simulation score
Higher turbo clock speed 4.2 GHz vs 3.9 GHz Around 10% higher turbo clock speed
Slightly more l3 cache 8 MB vs 6 MB Around 35% more l3 cache; more data can be stored in the l3 cache for quick access later
Better PassMark score 11,109 vs 8,012 Around 40% better PassMark score
More threads 8 vs 4 Twice as many threads
More l3 cache per core 2 MB/core vs 1.5 MB/core Around 35% more l3 cache per core
Better PassMark (Single core) score 2,349 vs 2,148 Around 10% better PassMark (Single core) score
Better performance per watt 3.49 pt/W vs 2.45 pt/W More than 40% better performance per watt
Slightly better overclocked clock speed (Water) 4.77 GHz vs 4.57 GHz Around 5% better overclocked clock speed (Water)
Front view of Intel Core i5 6600K

Reasons to consider the
Intel Core i5 6600K

Report a correction

CPUBoss is not aware of any important advantages of the Core i5 6600K vs the Core i7 6700K.

Benchmarks Real world tests of Core i7 6700K vs i5 6600K

CompuBench 1.5 (Bitcoin mining) Data courtesy CompuBench

Core i7 6700K
35.02 mHash/s
Core i5 6600K
35.25 mHash/s

CompuBench 1.5 (Face detection)

Core i7 6700K
26.72 mPixels/s
Core i5 6600K
28.75 mPixels/s

CompuBench 1.5 (T-Rex) Data courtesy CompuBench

Core i7 6700K
1.82 fps
Core i5 6600K
1.91 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 i5 6600K
209.7 MB/s

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs


Core i7 6700K  vs
i5 6600K 
Clock speed 4 GHz 3.5 GHz
Turbo clock speed 4.2 GHz 3.9 GHz
Cores Quad core Quad 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 91W
Annual home energy cost 21.92 $/year 21.92 $/year
Annual commercial energy cost 79.72 $/year 79.72 $/year
Performance per watt 3.49 pt/W 2.45 pt/W
Typical power consumption 73.94W 73.94W


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


Core i7 6700K  vs
i5 6600K 
Architecture x86-64 x86-64
Threads 8 4
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 6 MB
L3 cache per core 2 MB/core 1.5 MB/core
Manufacture process 14 nm 14 nm
Max CPUs 1 1
Operating temperature Unknown - 64°C Unknown - 64°C


Overclocked clock speed 4.61 GHz 4.54 GHz
Overclocked clock speed (Water) 4.77 GHz 4.57 GHz
Overclocked clock speed (Air) 4.61 GHz 4.54 GHz

integrated graphics

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

memory controller

Memory controller Built-in Built-in
Memory type
Channels Dual Channel Dual Channel
Supports ECC No No
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 65,536 MB 65,536 MB
Intel Core i7 6700K
Report a correction
Intel Core i5 6600K
Report a correction


Showing 25 comments.
Wowzorz, a whole 23 mhz difference
I use both processors for gaming coding 3d modeling. Use GPUs from 1060 to 1080, In real world so far I don't see any difference
you need a bios update if youre using a kaby lake cpu (i7-7700k) on a b1,h1,and z1 motherboards
it was the bios. not really ready for the board (and bios ver 1.0 is scary) and no way to update it.
thats odd bud, i personally have an i5 with only 8gb of ram, i run various producing programs and video editing software. some have a little "cpu usage" meter on them and i never see them pass 1/8 of the meter. black ops and most games are also 60+ frames. i was thinking of upgrading to an i7 just because i wanna do the whole water cool led "look at me" build next
now when do we get an i9? i did buy the i7-7700k first.- but none of the boards i have would support it. even with a bios update. sent it back to amazon. a afffordable 6 core would be nice. i dont like to spend more than 400 for a cpu.
had to sell the i5. my cpu usage in win 10 build 15025 was usually always at least 60%. and encoding, vsts, and djing was a bit off. i have 32gbs ddr4. i5 was clocked at 4.4ghz. but when it needed to do something intensive. crash. got the i7-6600k. and cpu usage is around 8%. and i am not overclocking it. tried the i5 on 3 boards. same deal. i think for the money its ok. but to give them the same rating is crazy. hyperthreading saves me hours. im not a gamer. maybe i should start again. peace
Is i7 better for VR? i currently have a i5 and play loads of battlefield 1 too and it's saying recommended CPU is a i7? help? if anything i can give you my email so we can talk back and forth because i have a boat load of questions about computers
ZEN is a hype trap. Just like FX
I got my i5-6600k for $199 vs the i7-6700k which cost $359.99 and I'm completely happy with my decision of saving $160 But then again, I'm also running (unlike CPUBoss) the following: MSI Gaming M7 Mainboard Viper extreme 3400Mhz 2x8GB Dual Channel mode Asus Strix GTX970 Graphics connected to a Samsung 48" 4k UHD Smart TV Samsung 950 Pro m.2 SSD 1TB
You are not representing EITHER processor properly with all due respect. They both are capable of DDR4 upto what? 3600Mhz Dual Channel yet you're testing them both with DDR3L 1600Mhz? Get real, CPUBoss. I'll probably look elsewhere for real life comparisons from now on. Also, running liquid cooling, I'm getting my i5-6600k overclocked to 4.576, not 4.54
kys mem pls
IDK but I just wanna get a GTX 1060 MSi GAMING X over the RX 480. I just don't like it for some reason. All the games that AMD has performed better on are either sponsored by AMD (like Hitman) or poorly optimised (Tomb Raider). I believe after all, that GTA 5 seems to be the best game for testing out GPUs. And in that, the GTX 1060 has the trophy. Try to look into the GTX 1060 a little before buying the 480 but again, it's your choice, whether or not either performs better.
I have both . Finished the i7 build. Still deciding on parts for the i5
I first bought the I5 6600k for my mitx i built for my (owner operator). Amazon sent me everything except the cpu. I went online and cancelled my order for the 6600k and drove up to Micro Center and bought an I7 6700k. It was $52 more than what Amazone was charging for the I5. So splurged a little bit. I got a good deal on my GPU and plus the I did not have to buy another motherboard. I primarily will be using my rig for gaming, record keeping, and entertainment but I also play around with some software like Blender once in awhile. Problem is I am not getting alot of time to learn new software but I try. On top of that got an email today saying Amazon is shipping the I5 I cancelled and will arrive on the 12th. I don't plan on returning it but it will have to sit for awhile. I am planning a matx build in the future. But I really like the I7 6700k so far and I haven't overclocked it. I'm glad I bought it. I paid $300 for the I7 and paid $230 plus shipping for the I5
I just purchased an i5-6600k for my son. These CPUs can be overclocked to roughly the same speed as an i7-6700k. Each additional thread equates to only about 0.3 cores, since the extra threads are simply a 2nd register file and the CPU rapidly switches to the other registers/thread whenever the main thread is stalled due to pipeline interlocks. Often (about 70% of the time) the alternate thread would be stalled as well! So you are talking 4 cores for $229(i5-6600k) vs. 5.2 cores for $329(i7-6700k). The 1.2 "extra" core is not worth a 50% price boost! Most games are still bottlenecked by the GPU (we are purchasing an Rx480 to get fluid 60 fps at 1080p). If you want a really good deal wait for AMD Zen this winter - you will probably be able to get 8 actual cores at Intel speeds for ~ $300, not just 5.2 cores.
if your gaming get i5, if you do video editing and gaming get i7 as easy as that i got i7 as was on offer for 200 pounds from a online store
well mate not genuinely you can do that with an i5 6600k also but u need a decent oc and A grade cooling because you don't want your cpu to be running above 60C at all times or maybe even 65
Alienware? Does anyone really buy that crap? They are overpriced and not worth the money considering you can build your own with the same configuration for half the price.
Yes if you a heavy user, or you do not know if will use it or not in future, if you have the money yes. 2016-05-31 16:54 GMT+03:00 Disqus <>:
My friend had a 4690K i5 and went for 6600K i5 even though he games a LOT with a little editing/animation etc. If you're on a budget of ~2000 dollars then I don't recommend getting the i7 at all. Just buy a kickass liquid cooler (prefer Corsair) and OC
sorry i meant 8 clients atleast
how about if i want do multiclienting of games like 4 clients , should i go for i7 or i5 would be awesome if it require only i5 i have now amd FX-8120 and i can open 5 clients
So you guys saying if you only play games watch videos you should go for an i5 and if you want to stream, YouTube you should go for an i7?
comments powered by Disqus