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Intel Core i7-6700K: Overclocking Benchmark Review

2015-08-05
hi and welcome back to hardware unboxed I'm your host Matt and in this video we're gonna overclock the new sky like 6 gen core i7 6700 K processor I'm not going to go into a whole lot of detail about the processor itself or skylake as we covered all this background information in the original video on benchmark the two processes that Intel lead in their skylake released with are the i7 6700 K and the i5 6600 K this is the normal strategy for Intel is these enthusiast processors tend to generate the most high we demonstrated in the original 6 to 700 K and 6600 ka videos that the standard clock performance of these two new skylake processors was nothing to get excited about Intel's media release kit said there would only be up to about a 10% performance increase and they were right oftentimes it was actually much less this is pretty disappointing news for a lot of people that were very excited about skylake as the rumor mill had been working overtime and leaked information out there was suggesting performance increases of up to 40% now we mentioned in our original video that our unit was an overclocking Beast let's go and put it to the test and find out first we switch to Advanced Mode in the BIOS and move to the OC Tweaker menu where we selected load optimized cpu Oct setting and grab turbo 4.8 gigahertz from the list next we checked out the CPU configuration settings and you note that all that's been changed the CPU ratio 248 and the cash ratio 240 next we move to the DRAM configuration and made sure that XMP 2.0 profile 1 was loaded before saving and exiting the BIOS the system now restarts successfully loads Windows 10 in a few seconds and once a Windows 10 we brought up a magnified version of cpu-z as you can see the processor is holding steady at 4.8 gigahertz and the ddr4 memory is clocked at 3000 megahertz now let's move on to run a quick Cinebench multi-threaded test please note the score reported here might be slightly different to the score reported in my graph so that takes the average from three runs not just a single run and that's it let's move on to the proper benchmark results first up we retested with Cinebench is multi-threaded test originally the 6700 K managed 882 CB marks right on par with its Haswell counterpart the 4790k overclocked to 4.8 gigahertz we were able to milk 19.6% more out of the system for a score of a thousand and fifty five cv marks next we ran Stanner bench a single threaded test where the overclocked 6700 K was again impressive at 4.8 gigahertz that scored 17 percent better than its original clock speed and 21 percent better than the 4790k the next test was a benchmark we've only recently started using web export originally the 6700 K was slightly behind the 4790k but our overclocked colleague manish is 16.8 just an improvement for 438 web export points much better the 7-zip results are also a lot better as expected where the 6700 K was originally 8.3 percent behind the 4790k it was now 11% faster and it managed a full 20% higher total myth Smith's overclocked state in our Microsoft Excel Monte Carlo workload tests we also saw a significant improvement I was able to get the job done in 2.7 seconds which was nearly 23% faster this time the Photoshop custom workload benchmark also produced much better results this time was faster than both the 5775 C and the 4790k at was 6.8 seconds faster than its original score and eighty and a half percent improvement finally we assess performance with the hand brake conversion test where the original 6700 K already led in its class it was able to average more than 10 frames per second higher which made for just shy of an 18 percent performance increase I admit this is very much a lazy overclock but forgive me time was not on my side it does prove a few things though firstly that it's very easy to overclock the core i7 6700 K on a Zed 170 motherboard such as that adds rocks dead 170 gaming k-6 secondly 6700 K overclocking is very promising as we managed to increase the clock speed by 20% over the base clock and 14% over the maximum turbo frequency this led to some pretty significant performance gains offered in the vicinity of 20% the overclock was achieved using the Noctua NHD 15 which is widely regarded as the best air cooler on the market temperatures hovered in the high eighties when benchmarking and again at no point did we encounter any stability issues the core i7 6700 case certainly seems to be a much better overclocker than the 4790k which maxed out at around 4.6 gigahertz thanks for watching this overclocking video this has been Matt for Hardware unboxed let me know what you think in the comments hit like hit subscribe and we'll see you next time yeah
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