Intel Core i7-7700K Overclocked To 6.7 GHz on LN2, Core i5-7600K With 5.1 GHz on Air – More Kaby Lake Desktop Processors Confirmed
It seems like there's no stopping when it comes to Intel CPU leaks. The latest come from various Chinese sources who have managed to grab the new Kaby Lake chips.
Intel Core i7-7700K and Core i5-7600K Overclocked on 100-Series Boards
The two chips that have been overclocked include the Core i7-7700K and Core i5-7600K. Both chips will be the top end parts of the Kaby Lake lineup which is expected to hit retail during CES 2017 along with the new 200-series boards.
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, multi-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 chip will be available around the $370 US range.
Intel Core i5-7600K - The Fastest Core i5 Kaby Lake Processor:
The Intel Core i5-7600K processor is the fastest Core i5 chip in the Kaby Lake lineup. This chip features a quad core, non-multi-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 3.8 GHz base and 4.0+ GHz boost. The processor packs 6 MB of L3 cache and has a TDP of 91W. The chip will be available around the $250 US range.
Intel Core i5-7600K CPUz:
You can also check out a few new Pentium additions in the table below such as the G3930 and G3950. Don't mistake them with the previous Celeron chips as these feature the new Kaby Lake architecture and improved specifications.
Intel 7th Generation 'Kaby Lake' Desktop Lineup
| SKU Name | Cores/Threads | Core Clock | Boost Clock | L3 Cache | TDP | Socket | Price |
|---|---|---|---|---|---|---|---|
| Core i7-7700K | 4/8 | 4.2 GHz | 4.5 GHz | 8 MB | 91W | LGA1151 | $339 US |
| Core i7-7700 | 4/8 | 3.6 GHz | 4.2 GHz | 8 MB | 65W | LGA1151 | $303 US |
| Core i7-7700T | 4/8 | 2.9 GHz | 3.8 GHz | 8 MB | 35W | LGA1151 | $303 US |
| Core i5-7600K | 4/4 | 3.8 GHz | 4.2 GHz | 6 MB | 91W | LGA1151 | $242 US |
| Core i5-7600 | 4/4 | 3.5 GHz | 4.1 GHz | 6 MB | 65W | LGA1151 | $213 US |
| Core i5-7600T | 4/4 | 2.8 GHz | 3.7 GHz | 6 MB | 35W | LGA1151 | $213 US |
| Core i5-7500 | 4/4 | 3.4 GHz | 3.8 GHz | 6 MB | 65W | LGA1151 | $192 US |
| Core i5-7500T | 4/4 | 2.7 GHz | 3.3 GHz | 6 MB | 35W | LGA1151 | $192 US |
| Core i5-7400 | 4/4 | 3.0 GHz | 3.5 GHz | 6 MB | 65W | LGA1151 | $182 US |
| Core i5-7400T | 4/4 | 2.4 GHz | 3.0 GHz | 6 MB | 35W | LGA1151 | $182 US |
| Core i3-7350K | 2/4 | 4.2 GHz | N/A | 4 MB | 60W | LGA 1151 | $168 US |
| Core i3-7320 | 2/4 | 4.1 GHz | N/A | 4 MB | TBD | LGA 1151 | $149 US |
| Core i3-7300 | 2/4 | 4.0 GHz | N/A | 4 MB | 51W | LGA1151 | $138 US |
| Core i3-7300T | 2/4 | 3.5 GHz | N/A | 4 MB | 35W | LGA1151 | $138 US |
| Core i3-7100 | 2/4 | 3.9 GHz | N/A | 4 MB | 51W | LGA 1151 | $117 US |
| Core i3-7100T | 2/4 | 3.4 GHz | N/A | 4 MB | 35W | LGA 1151 | $117 US |
| Pentium G4620 | 2/4 | 3.7 GHz | N/A | 3 MB | 51W | LGA1151 | $86 US |
| Pentium G4600 | 2/4 | 3.6 GHz | N/A | 3 MB | 51W | LGA 1151 | $75 US |
| Pentium G4560 | 2/4 | 3.5 GHz | N/A | 3MB | 54W | LGA 1151 | $64 US |
| Pentium G3950 | 2/2 | 3.0 GHz | N/A | 2 MB | 35W | LGA1151 | $52 US |
| Pentium G3930 | 2/2 | 2.9 GHz | N/A | 2 MB | 35W | LGA1151 | $42 US |
The Intel Core i7-7700K was overclocked by HKEPC on LN2 cooling. The chip used might be an engineering sample but we have already seen retail chips ready. The chip was coupled on an ASRock Z170M OC Formula motherboard along with GALAX HOF DDR4 memory. The multiplier on the chip was adjusted to x67 and the bus speed remained untouched. This resulted in a clock speed jump to 6.7 GHz. There's no reporting on the voltage used but it should be high considering the use of LN2.
The Intel Core i5-7600K on the other hand was overclocked to 5.1 GHz on air. This test was performed on an ASUS Maximus VIII Gene motherboard by facebookHK. The chip had multiplier adjusted to x40 and bus speed adjusted to 127.51 MHz. This pushed the clock speed to 5.1 GHz. The chip voltage was adjusted to 1.504 Volt which seems rather high. The tester says that the chip was very stable on 5.1 GHz and the temps were pretty good considering the voltage used.
The chip kept itself under 30C on idle and didn't went past 46C on max load. There's no telling what air cooler was used but it should be a good one. It is mentioned that Kaby Lake might offer the same overclock potential as Sandy Bridge.
Intel Core i5-7600K Package Pictured in Full Detail - Compared To Skylake Core i7-6700K
Expreview also managed to grab a Core i5-7600K retail chip before launch. They compared the package to the Skylake Core i7-6700K and found some interesting bits. Skylake chips had a generally thinner PCB which bent out when pressure was applied during cooler installation.
Kaby Lake features a more thicker PCB which should help resolve that issue. Aside from that, the heatsink package is more beefier on the Kaby Lake chip. This is going to help heat dissipation and would result in better thermal conduction when thermal paste is applied.
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