Intel's new high-end CPU "Skylake-X" proved to have a problem of explosion due to grease burger condition

To counter AMD's Ryzen series, Intel has upgraded Skylake-X and Karby Lake-X series including "Core i9-7980XE" of up to 18 cores / 36 threads for high-end desktop PC (HEDT)COMPUTEX TAIPEI 2017We announced at. As its new generation high-end CPU, 10 cores / 20 threads "Core i9-7900XThree types of "Skyleke-X" series CPUs will be released in advance, and information can be released as soon as booking is accepted, and major sites such as Tom's Hardware and AnandTech have revealed the results of a thorough benchmark test .

The Intel Skylake - X Review: Core i9 7900 X, i 7 7820 X and i 7 7800 X Tested
http://www.anandtech.com/show/11550/the-intel-skylakex-review-core-i9-7900x-i7-7820x-and-i7-7800x-tested

Intel Core i9-7900X Review: Meet Skylake-X - Tom's Hardware
http://www.tomshardware.com/reviews/intel-core-i9-7900x-skylake-x,5092.html

The Intel Core i9-7900X 10-core Skylake-X Processor Review | Power, Perf per Dollar, Conclusions
https://www.pcper.com/reviews/Processors/Intel-Core-i9-7900X-10-core-Skylake-X-Processor-Review/Power-Perf-Dollar-Conclusi

The high-end CPU series for Intel 's HEDT will shift from the "Broadwell - E" series to the "Core - X" series called the new generation codename "Skylake - X" "Kaby Lake - X".


Although Skylake-X and Kaby Lake-X correspond to the common platform called LGA 2066, Kaby Lake-X only supports 4 cores, memory also supports 2 chips, PCI-Express gets 16 lanes and Skylake- Skylake-X is the high-end model position.


The price has already been announced, and "Core i 9 - 7980 XE" of the top 18 cores / 36 threads is $ 1999 (about 220,000 yen). The 16 core / 32 thread model will be launched AMC's next-generation high-end CPU "Ryzen Threadripper" The lineup of 18 cores suddenly lineuped in a form to be launched in October 2017 as early as the first high-end series "Broadwell-E"Core i 9 - 7900 X" of 10 cores / 20 threads, "Core i 7 - 7820 X" of 8 cores / 16 threads, "Core i 7 - 7800 X" of 6 cores / 12 threads are replaced on June 26, 2017 It will be on sale.


Beginning reservation acceptance on June 19, 2017, the review article of Skylake-X · Karby Lake-X series was lifted, and many benchmark results were released simultaneously with many review articles.

In comparison of multithreading performance using "Cinebench 15" by AnandTech, Core i9-7900X is overwhelming with Core i7-6950X of the former high-end model. Core i7-7820X with 8 cores / 16 threads gives a score closer to 10 core / 20 thread Core i7-6950X.


Even with "Blender 2.78", the Skylake-X series (light blue) has a high performance.


However, in the Prime95 test, it has been shown that the Skylake-X series has high heat generation, such as Core i9-7900X and Core i7-7800X recording power consumption exceeding 140 W of TDP.


Even in the Tom's Hardware benchmark test, the Skylake-X series showed roughly better performance than Broadwell-E, but in some tests the result was lower than the Broadwell-E. In the benchmark software "VRMark" specialized for VR performance, Core i9-7900X is losing in score at Core i7-6950X in both ratings and overclocking.


Even in game Excalation (full HD resolution - DirectX 12 environment), Core i9 - 7900 X loses score at Core i 7 - 6950 X at frame rate.


And weak points in terms of power consumption are clarified. System power consumption at idle was Core i9-7900X which showed lower power consumption performance than Ryzen 7 series ... ...


Under the full load situation in which all cores of the CPU are used up, the power consumption exceeds Core i7-6950X.


Tom's Hardware makes a particularly strict evaluation on "fever". In general cool water cool type CPU coolers such as Corsair H100i and Enermax Liq Tech 240, the limit has reached the Prime 95 benchmark test despite the rated frequency. This is because Skylake - X points out that the core and spreader are connected with grease instead of soldering (soldering). Despite the high-end CPU, so-called "Gris BurgerBecause of the specification, cooling can not catch up.

Red color is the core temperature displayed by CPU sensor, green is heat spreader temperature. As the water-cooled CPU cooler water pillar is constant at 20 degrees, you can see well that the heat generated inside the CPU can not be exhausted well.


The graph below shows the temperature difference between the CPU core and the heat spreader. Tom's Hardware calls "shocking" two temperatures that dissociate as the CPU core temperature rises.


Tom's Hardware gave up simple water cooling, it got about 950 euros (about 130,000 yen) "Eiszeit Chiller 2000Overclocking is carried out using the chiller called "Chiller." The increase in overclocking power consumption (red) is as follows, and it is a state of explosion that is difficult to process on general machines.


The PC Perspective's benchmark test also has the same result as Tom's Hardware saying "It's low power consumption in the idle state, but it will be high power consumption at the time of full load at the time of full loading".


We also got an engineering sample for Core i9-7900X4 GamerUses the clamp meter to measure the power consumption of the CPU alone. In various benchmark tests, it has been found that the power consumption is higher than that of Ryzen 7 1800X.


Even 10 core / 20 threads Core i9-7900X means that it has high heat generation and high power consumption, how to handle heat generation in 18 core / 36 thread high-end model "Core i9-7980XE" is a big problem It is likely to become.

·bonus
Thanks to the powerful rival Ryzen Threadripper, 10 cores will be released for $ 999 (about 110,000 yen), which was greatly discounted from the previous high-end model "Core i7-6950X" which was 1569 dollars (about 180,000 yen) / 20 threads "Core i9-7900X", but Hermitage Akihabara reports that arrival in Japan's PC market is expected to be in mid July 2017.

Hermitage Akihabara - Intel X299 motherboard reservation acceptance start ~ Compatible CPU scheduled to arrive in mid-July ~
http://www.gdm.or.jp/crew/2017/0619/211478

By the way, it is said that the corresponding LGA 2066 motherboard will be released on June 26, 2017 on the ban deadline, so the user seems to be waiting for the arrival of the CPU while watching the motherboard.