As early as before the listing of the 8700K, the author got a test version of the product. Unlike many previous test versions of the CPU, the 8700K is generally inferior to the boxed version, but many 8700K players are aware of this processor. Are based on the performance of the early ES version.
I got that ES processor in the overclocked 5GHz voltage need to give 1.42v to ensure stability through various tests, compared to the seventh generation of Core products in terms of performance is more general, but then we continue to try within 1.5v Can impact the 5.3GHz boot, this performance has confirmed the eight-generation Core in the air / water cooling limit the powerful strength of the.
The CPU's heat output is increasing exponentially with the main frequency. When the frequency reaches 5GHz and above, the CPU's core voltage will play a key role in the final temperature performance. However, the ES version of the 8700K Even at a voltage of 1.38v, it was not able to operate stably. This also led to the fact that the cold 280mm cold water we were using at the time could not guarantee high temperature in the high pressure test environment.
However, the performance of the 8700K ES version still gave us shock. After all, it is unimaginable that the six-core processor can achieve normal operation above 5GHz. In the past, we were full of expectation for the full-scale release of the official version. After all, this is a The blade that Intel uses to fight against AMD Ryzen processors is bound to set off a fierce battle in the market.
The boxed version of the processor brings a far superior physical quality to the ES version
Shortly after the official version of the 8700K box came on the market, we purchased a board U set with the motherboard ASUS ROG STRIX Z370-F GAMING. The boxed version of the physical performance was very unexpected at that time, because there was a lesson from the ES version, we There is no high expectation of its daily use frequency, but the end result is very gratifying.
This 8700K can start up at 5GHz @ 1.25v, 1.28v can stably pass all kinds of tests, and daily absolute stable use requires 1.3v. Compared to the ES version, a voltage drop of more than 0.1v makes it able to Guaranteed daily use within 70 degrees, and mainstream game temperature is within 80 degrees, truly practical. And with regard to overclocking potential, this processor's limit overclocking limit is also 5.3GHz@1.45v, able to run part of the test, but even if the voltage is given To 1.52v can not achieve 5.4GHz boot, the limit is basically the same with the ES version.
i7-8700K single copy FPU performance last winter
The winter of November in Beijing does not really feel like winter. The standard office room temperature makes the 8700K limit copying machine temperature better. The six cores have reached because of the uneven load and the internal thermal conductivity difference of the grease. The maximum temperature difference of 9 degrees, although the hottest core can be maintained at 89 degrees, but this has laid the ground for the following.
The performance of the 5GHz six-core, twelve-threaded processor is quite impressive. Although the multithreading aspect is significantly different from that of the dozen or so core processors, the performance of single-threaded performance is already the highest level at present. At present, the performance of computers can play a key role. Whether it is the daily opening of various types of large-scale software, the live broadcasting of multiple barrage, or the playing of some RTS/MMORPG games, this 5GHz can be fully utilized. The best fluency.
After six months, the temperature difference between cores is too large.
However, when half a year has passed, due to the severe aging of the internal silicone grease, although some cores can maintain the vicinity of 90 degrees during the copying, there is a core instant of 100 degrees. Although the daily use and entertainment temperatures are still acceptable, However, in order to carry out some high-pressure tests in the follow-up, the issue of opening the lid was also put on the agenda.
The temperature of the copying machine after opening the lid was expected to be lower than that of the lid before the lid was opened. The basic control was around 80 degrees, but it was important that the temperature difference between the cores was significantly reduced. The 100-degree problem was solved immediately before the cover was opened.
After opening the cover and replacing the liquid gold, the copying machine performance
Since the temperature has improved, we have once again tested the potential of overclocking. Unfortunately, this processor still can not impact the 5.4GHz, and there is still a blue screen after two days of use under 1.28v. The lid operation did not improve beyond the temperature.
Fortunately, although the company's room temperature reached more than 30 degrees before May, this 8700K still achieved more than 1700cb of multi-threaded performance in the Cinebench R15 with 5.2GHz@1.39v plus dual-channel DDR4 4000MHz CL18 memory. Is worthy of this toss.
So today's sharing is here, I hope to be able to help everyone. However, it should be noted that for the average player, we still do not recommend the operation of opening the lid. Although the opening operation of the 8700K is not very difficult, There is a certain risk. It is recommended that players who intentionally impact high-frequency running points try it out. At extreme high frequencies, temperatures may be the hardest obstacle to break through. The fun of DIY is all about it.
Silicon grease that has been baked outside the CPU
