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Intel Core i7-7700K Kaby Lake CPU Benchmarks Leaked, Overclocked To 5.0 GHz – Great Performance For A Minor Clock Bump


The first performance benchmarks of Intel's Core i7-7700K Kaby Lake CPU have been leaked over at Chinese forums. The benchmarks showcase the performance of Intel's 7th generation, flagship Core processor which is going to launch on 5th January at CES 2017 (Consumer Electronic Show).

Intel Core i7-7700K Benchmarks Leaked - Both at Reference and Overclocked Speeds

The Core i7-7700K is the top brass of the Kaby Lake processor family. It is based on the existing 14nm process node which has seen improvements due to a matured manufacturing technique. Intel calls the optimized node 14nm+ (Plus). These process improvements result in better clock gains under the same TDP headroom as Skylake.

Kaby Lake gets most of its architectural hierarchy from Skylake and next to no gains in the IPC department. The performance improvement come solely from the clock speed bump but is it enough to compensate for the new processor lineup? Let's find out.

Intel Core i7-7700K – The Fastest Core i7 Kaby Lake Processor:

The Intel Core i7-7700K processor is the fastest Core i7 chip in the Kaby Lake lineup. This chip features a quad core, hyper-threaded design. The chip is based on the latest 14nm Plus process node which delivers improved efficiency and performance on the existing 14nm FinFET technology. The clock speeds are rated 4.2 GHz base and 4.5 GHz boost. The processor packs 8 MB of L3 cache and has a TDP of 91W. The Core i7-7700K CPU will retail at $349 US.

There are several other processors in the Kaby Lake lineup. Benchmarks of the Core i5-7600K and the Core i3-7350K have already been covered. The Core i5 chip manages to offer up to 10% performance increase over the Core i5-6600K while the Core i3-7350K manages to tackle Quad core processors. The specs and expected prices for Kaby Lake desktop processors are listed in the table below:

Intel 7th Generation 'Kaby Lake' Desktop Lineup

SKU NameCores/ThreadsCore ClockBoost ClockL3 CacheTDPSocketPrice
Core i7-7700K4/84.2 GHz4.5 GHz8 MB91WLGA1151$339 US
Core i7-77004/83.6 GHz4.2 GHz8 MB65WLGA1151$303 US
Core i7-7700T4/82.9 GHz3.8 GHz8 MB35WLGA1151$303 US
Core i5-7600K4/43.8 GHz4.2 GHz6 MB91WLGA1151$242 US
Core i5-76004/43.5 GHz4.1 GHz6 MB65WLGA1151$213 US
Core i5-7600T4/42.8 GHz3.7 GHz6 MB35WLGA1151$213 US
Core i5-75004/43.4 GHz3.8 GHz6 MB65WLGA1151$192 US
Core i5-7500T4/42.7 GHz3.3 GHz6 MB35WLGA1151$192 US
Core i5-74004/43.0 GHz3.5 GHz6 MB65WLGA1151$182 US
Core i5-7400T4/42.4 GHz3.0 GHz6 MB35WLGA1151$182 US
Core i3-7350K2/44.2 GHzN/A4 MB60WLGA 1151$168 US
Core i3-73202/44.1 GHzN/A4 MBTBDLGA 1151$149 US
Core i3-73002/44.0 GHzN/A4 MB51WLGA1151$138 US
Core i3-7300T2/43.5 GHzN/A4 MB35WLGA1151$138 US
Core i3-71002/43.9 GHzN/A4 MB51WLGA 1151$117 US
Core i3-7100T2/43.4 GHzN/A4 MB35WLGA 1151$117 US
Pentium G46202/43.7 GHzN/A3 MB51WLGA1151$86 US
Pentium G46002/43.6 GHzN/A3 MB51WLGA 1151$75 US
Pentium G45602/43.5 GHzN/A3MB54WLGA 1151$64 US
Pentium G39502/23.0 GHzN/A2 MB35WLGA1151$52 US
Pentium G39302/22.9 GHzN/A2 MB35WLGA1151$42 US

Intel Core i7-7700K Benchmarks With Stock Clocks:

The Core i7-7700K testing was performed on a Z170 platform. It comprised of a MSI Z170A Gaming Pro board, GALAXY HOF DDR4 series memory clocked at 4133 MHz. The setup also featured a MSI GeForce GTX 1070 DUKE edition graphics card, DeepCool Big Frost Tower Extreme cooler and a 256 GB M.2 SSD from Samsung.

By using the latest firmware update provided by MSI, they board booted up, supporting the Kaby Lake chip just fine. The CPU-Z shot shows the exact same specifications for the processor as listed above.

First up, we have that famous Chinese software which is known for installing a ton of spamware inside your PC and you can't even control it. The chip scored 377,544 points in the test. In Fritz Chess benchmark, the chip is scoring 17,049 kilo nodes per second. Cinebench R15 CPU performance is rated at 913 points.

AIDA64 numbers are pretty good and were tested with the native memory speed of 2133 MHz. The benchmark reported scores of 30188 MB/s Reads, 31137 MB/s Writes and 27000 MB/s Copy speeds. Finally, we have 3DMark 11 where the chip scored 8467 points on the extreme preset using the GTX 1070 card. During all tests, CPU temperature hovered around the 60C mark at the reference clock speeds. Overclockers should be eyeing beefier cooling that should go along fine with a K-Series chip.

Intel Core i7-7700K Stock Performance Testing:

Intel Core i7-7700K Benchmarks With 5.0 GHz OC:

Overclock benchmarks were performed at a clock speed of 5.0 GHz. The memory speeds were also pumped up to their max XMP profile which is 4133 MHz. This would result in some huge gains in memory intensive tests. In Cinebench R15, the chip scored 1089 points while Fritz Chess benchmark reported a score of 19891 Kilo Nodes per second. Both tests were performed with the native memory clocks since the overclock didn't hold up as well as expected.

The clock speed for the memory was bumped to 3100 MHz in 3DMark 11 which is the maximum this board can support with stability. Performance numbers were bumped to 8664 points on the extreme preset.

Intel Core i7-7700K OC Performance Testing:

Intel Core i7-7700K Leaked Benchmarks:

Benchmark TestsIntel Core i7-6700K (Stock)Intel Core i7-7700K (Stock)Intel Core i7-7700K (5.0 GHz)
Cinebench R15886 Points913 Points1089 Points
Fritz Chess16050 Points17049 Points19891 Points
3DMark 11 Extreme (Physics Score)10124 Points10838 Points13542 Points

Intel Core i7-7700K Overclocked To 4.9 GHz at 1.29V

Our friend Zolkorn shared some interesting overclock details of the Core i7-7700K a few days ago. According to the findings, a Core i7-7700K chip was overclocked to 4.9 GHz easily at just 1.29V. The chip turned out as very stable during Prime95 CPU stress test. Temperatures however roamed around 100C which shows that the new chips could get really hot when overclocked. Same can be seen in the overclocking testing above.

From the looks of it, overclocking on Kaby Lake K-Series would vary from sample to sample. Some golden chips can handle higher overclocks at low voltages while the chip used in the 5 GHz performance testing used 1.49 V to reach the desired overclock frequency.

Intel Z270 and H270 PCH Features Detailed

Intel Z270 and Z170 offer the same CPU PCIe configuration support. They allow for 1 x 16, 2 x 8 or 1 x 8 + 2 x 4 config whereas the H270 and H170 chipset offers just 1 x 16 config. The total number of independent Display Port offered by the PCH are 3 and power up to four memory DIMMs in Dual Channel mode. The Z Series offers overclocking support while the H Series is restricted from such support. All chipsets offer Intel SmartSound tech but Intel AIB partners will be offering their own custom Audio codecs to power audio.

Moving on, the new 200-series has official support for Optane technology which is not available on 100-series products. Intel Rapid Storage technology is also pushed to 15 (was 14 on 100-series). Some other features in the new chipsets include Raid 0, 1, 5, 10 support, PCIe Storage Drive support, Smart Response Technology and I/O Port flexibility.

Intel Kaby Lake 200-Series Z270 and H270 Platform

Intel has increased the number of high-speed I/O lanes to 30 on both 200-series chipsets. The Z170 had 26 while the H170 had 22 lanes. Total USB ports have remain the same at 14 (10 USB 3.0) for Z Series and 14 (8 USB 3.0) for H Series. All boards would have 6 SATA III 6 GB/s ports. Expansion slots would be powered by 24 PCI-e lanes on Z270 and 20 PCI-e lanes on H270. This is a slight increase over 20 PCI-e lanes on Z170 and 16 on H170.

Entire Kaby Lake Desktop Lineup Launches at CES 2017

The entire Kaby Lake desktop lineup launches at CES 2017. It would be 4th January for some and 5th January for others, depending on the time zone. But that would be the day when motherboard makers and Intel them selves lift the NDA on Kaby Lake and 200-series products.

The Core i7-7700K is a nice update from i7-6700K and especially for those users who are still running Sandy Bridge or Ivy Bridge processors. The 200-series PCH platform brings a lot of new I/O capabilities and features to the consumer market so that alone is worth a look at. We hope to see more information on Z270 series motherboards really soon.

Intel Kaby Lake Retail Processor Samples:

Intel Core i7-7700 (Non-K) CPU Benchmarks: