Intel’s new Coffee Lake CPUs: Increased Thermal Load

With Coffee Lake, Intel has recently released its eighth processor generation. As part of the launch of the new generation of processors, a new chipset the Z370 has also been introduced.

While CPU coolers as offered by ARCTIC are still compatible thanks to the same mechanical socket, switching to the new Coffee Lake Processors requires a new mainboard due to its new chipset.

Motherboards with older chipsets (like Z270 / H310 / H370 / B360) are no longer compatible with Intel Coffee Lake processors despite the mechanically identical socket.

Up to 100 Watts extra load

The German magazine c’t examined four new motherboards with the chipset Z370 in a test in issue 23/2017. They discovered that in their default settings all motherboards overclock and operate the processors outside Intel’s specifications. The following mainboards were tested:

  • Asrock Z370 Extreme4
  • Asus PrimeZ370-A
  • MSI Z370-A Pro
  • Gigabyte Z370 Aorus Ultra Gaming

Intel’s restrictions regarding the turbo boost (concerning, for example, power supply and multipliers) are circumvented by all tested motherboards and result in a significant additional thermal stress.

In the case of Intel’s latest flagship model, the i7 8700K, it can lead to an increased power consumption of up to an additional 100 W. This causes a noticeably elevated temperature of the processor and requires a cooling solution that can cover this power peak.

Even if Intel officially states a TDP of 95 watts for the current top model 8700K, when using one of the mentioned motherboards under full load, a cooling solution for up to 180 W may be necessary. Alternatively, the default overclocking has to be deactivated in the BIOS.

 Powerful CPU Cooler necessary

We advise all users of Intel’s Coffee Lake and their K CPUs to pay attention to this extra thermal load via overclocking when choosing their cooler, or alternatively to disable the automated overclocking in the BIOS.

How to cool AMD Ryzen Threadripper Processors?

The Ryzen Threadripper is the new CPU from AMD for high-end systems – which possibilities do you have to efficiently cool a CPU with up to 16 cores?

Up to 16 cores and 32 threads, 4,096 pins, 64 PCI-E 3.0 lanes, quad-channel DDR4 RAM and 180 W TDP: The new AMD Ryzen Threadripper are very powerful CPU and with sufficient reserves even for demanding tasks.

The physical dimension of the Threadripper alone show the need for a powerful cooling solution. With the mentioned 4,096 pins the CPUs are significantly larger than other processors for private use.

Due to the size the new SocketTR4 was developed with its own chipset, X399. Cooling solutions, which still fit on equally new AMD AM4 socket, can’t be mounted on sTR4 Mainboards.

With prices starting at 800 EUR, the CPUs are not a bargain, but they are among the most powerful processors a home user can currently buy. Threadripper Processors promise excellent performance in particularly when multiple CPU Cores are needed, e.g. for gaming, video rendering, and other demanding applications.

But how to cool such large and powerful processors effectively?

Adjusted CPU Cooler needed

Because of the larger design, conventional CPU air coolers, which are compatible with AMD’s AM4 Socket and are designed for regular Ryzen processors, won’t fit the sTR4 for Threadripper CPUs.

Threadripper CPU coolers can, however, usually also be mounted and used on Ryzen processors in the AM4 socket.

Due to the high performance and the resulting high heat level of about 180 W TDP, AMD conducted extensive tests to check the compatibility of the cooling solutions available on the market.

The list of AMD certified Tthreadripper CPU coolers can be found here.

Threadripper CPU Cooler from ARCTIC

Since we are a close partner of AMD, a mounting kit for our CPU coolers of the Liquid Freezer series are provided with each Threadripper CPU. This allows the Liquid Frezer 120, Liquid Freezer 240 and Liquid Freezer 360 to be used to cool Threadripper CPUs.

ARCTIC Freezer 33 TR

Threadripper certified: The new ARCTIC Freezer 33 TR

If, on the other hand, you prefer regular air cooling for Threadripper, we recommend our newly developed Freezer 33 TR. It is designed for CPU with a TDP of up to 200 W.

The Liquid Freezer 240, 360 and the Freezer 33 TR are also certified by AMD as a cooling solution for Threadripper Processors.

So if you are interested in the AMD Ryzen Threadripper and wonder how it can cool it effectively and quietly, we from ARCTIC provide powerful yet silent Threadripper CPU Cooler.

 

Compact but strong – ARCTIC presents Freezer 12 and Freezer 12 CO

COMPACT BUT STRONG – ARCTIC PRESENTS FREEZER 12 AND FREEZER 12 CO

Semi passive and virtually silent Tower CPU Coolers for small systems

With the Freezer 12 and Freezer 12 CO, ARCTIC now offers two compact CPU coolers, which are multi-compatible and also suitable for the AMD Ryzen AM4 socket. The successors of the Freezer 11 series convince all along the line with regards to noise level, cooling capacity, mounting versatility and transport-proofness. As semi passive coolers, the Freezer 12 and Freezer 12 CO also work extremely efficiently as the fan only starts up at a PWM signal with 40 % pulse width.

The fan runs only when it is actually needed, i.e. with increased CPU utilization. In combination with the vibration absorption rubber mounts of the fan, this leads to almost silent operation even at its maximum cooling performance of 150 watts. The 92 mm fan provides an improved air flow, three double sided direct touch heat pipes and 45 aluminum fins ensure an optimal heat dissipation and an excellent cooling power. Unlike the predecessor Freezer 11 series, the Freezer 12 and Freezer 12 CO are multi-compatible and fit Intel sockets as well as AMD AM4.

The Freezer 12 CO is specifically designed for continuous operation. With its high-precision dual ball bearing, the cooler lasts five times as long as other coolers with standard bearings.

Main Features Freezer 12 / Freezer 12 CO
• Compatible with Intel & AMD socket
• Passive Operation up to 40 % PWM
• Improved airflow for more efficient cooling performance
• Offset heat pipes ensure optimal heat dissipation
• Improved fan controller made in Germany
• Anti-vibration rubbers for quiet operation
• Installation in all four directions possible
• Transport-proof mounting with backplate
• MX-4 thermal paste included

For the sake of the environment, ARCTIC provides the manuals for the new product line online only:
Freezer 12 | Freezer 12 CO

EXTENSIVE COMPATIBILITY WITH AMD RYZEN
The bulk of our CPU coolers is already compatible to the
AM4-socket. An overview is available on our Website.

15 Years of Expertise

ARCTIC does not only play in the top league of the cooling specialists ever since, ARCTIC initiated the trend towards quiet cooling systems for desktop PCs and left a distinct mark. In 2001 the Swiss engineer and company founder Magnus Huber has determined to fight against loud computers – today, the still privately-owned company with locations in Germany, Hong Kong and the USA offers one of the world’s largerst ranges of CPU and GPU coolers. Maximum compatibility, first-class performance and lowest volume convince enthusiasts in over 45 countries around the globe. With the competence of an unique expert knowledge from 15 years of (pc) noise minimization ARCTIC is building out its portfolio through high-quality sound products and office equipment.

                 

ARCTIC GmbH | Fasanenkamp 12 | 38108 Braunschweig
CEO: Magnus Huber I Headquarter: Braunschweig
Registry court: HRB 203471
Tax office: Braunschweig I Sales tax ID: DE277068088

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Liquid Cooling Solutions – Step Up Your Cooling System

Every computer, from home theater PC to the most hulking of gaming system, generates heat during operation- and this heat can kill your PC’s precious internals if you’re not careful.  For quite some time, air cooling systems were the solution to stop the CPU and GPU from overheating. As this method is quite successful, air coolers are still extremely popular in the marketplace. But there are some new solutions, as well.

The Next Level of Cooling

Over the time, cooling solutions were reworked to new sizes and methods. Thereby, liquid coolers became the next level of cooling. Especially for the CPU, this method becomes more and more popular. Here, the liquid used is a low conductive mixture that loops from the radiator to the CPU block which dissipates heat faster than air cooling does. That way, the CPU will run cooler at idle and under load.

ARCTIC Liquid Freezer Water Cooler for CPU

Water Cooler for CPU

No Worries

New liquid coolers are quiet, save internal space where it matters most, and perform well – all at a price that’s not far off from a good air cooler. Who thinks that water and a computer system won’t go together can be reassured.  When you follow the installation instructions correctly, there should be no leaks and therefore, your system stays dry. Moreover, thanks to the innovation of all-in-one water coolers like the ARCTIC Liquid Freezer, there is only need to install it once and the cooler won’t require to be maintained constantly in the future.

Water Cooler installation

ARCTIc Liquid Freezer in a standard PC case

Easy Installation

The easiest way to get into liquid cooling is with an all-in-one loop. These consist of a single closed loop with a radiator on one end and a pump/water block combo on the other. The system is pre-filled and pre-sealed so you don’t need to mess with it. You just install the radiator and its included fan onto one of your case’s existing fan mounts, attach the water block to the CPU and fire it up.
Most all-in-one loops cool the CPU only. There are some all-in-one loops for GPUs, like our ARCTIC Accelero.

ARCTIC Hybrid Cooler for GPU

ARCTIC Accelero Hybrid III-140

 

The innovative PWM Sharing Technology – Use PST to control the fan speed

How is the temperature decreased by PST?

Fans using the PWM feature just function with the necessary speed to endure maximum cooling at the lowest noise level.
Thanks to the patented innovative PWM Sharing Technology (PST), up to 5 fans (including CPU fans) connected to the ARCTIC F PWM fan can share the PWM signal. The speed of all the fans in this PST system is then centrally controlled by a single PWM signal via BIOS.
This means if the system load becomes greater, the fan speed of all fans within the PST system increases to reduce the chassis temperature. If the utilization is low, these fans will operate at a relatively low speed to ensure a proper cooling.

ARCTIC PST fans to lower noise level

Patented PWM Sharing Technology (PST) lowers noise level

All advantages at a glance

  1. Regulate the speed of different fans with only one PWM signal
  2. Quiet and effective case ventilation: Several fans rotate slowly and quietly at a little load.
  3. Save energy through lower fan speed

    several case fans working in parallel with PWM Sharing Technology

    Centralized controll with PST

How to install several PST fans

The following video gives an overview about the feature and explains how to install up to 5 fans with the PWM Sharing Technology feature.

[youtube=https://www.youtube.com/watch?v=sKi_7UVF3z0]

Thermal Pads or Thermal Paste – Differences and Advantages

The surface of a CPU or a heat sink is never entirely flat. If you place a heatsink directly on a CPU, there will be tiny, nearly invisible, gaps between the two. Since air conducts heat poorly, these gaps have a very negative effect on the heat transfer. Therefore, an interface material with a high thermal conductivity is needed to fill these gaps to improve heat conductivity between CPU and heatsink.
Here, you can decide between using thermal paste and thermal pads. But when should you use which solution? What are their differences and what advantages do both solutions have?

Thermal Paste

Thermal grease, thermal compound, thermal goop, thermal gunk or heat paste – thermal paste has lots of different names. It is a sticky paste applied directly on the heatsink or CPU and the most commonly used interface material in the electronics cooling area. Thermal compound with a good quality will provide the best possible performance. Unfortunately,  to apply thermal paste can be quite messy. Also, thermal paste isn’t the best way to fill bigger gaps sometimes. Here, you can use thermal pads.

Thermal Grease on a CPU

Installing thermal paste

Thermal Pads

Thermal pads are a lot easier to install than thermal grease. Unfortunately, they aren’t as effective as a thin layer of thermal paste. Some stock CPU coolers come with pads, because they’re nice and clean, and they’ll work fine.
But they are one-shot solutions only. You have to replace the pad if you ever remove the heatsink from its mounted position, because the heat of the operating CPU will have caused the thermal pad to conform the top. So, once you move the heatsink there will be new gaps between the surfaces. So never forget: If you dismount the heatsink, replace the thermal pad and remove all debris.

High Performance Gap Filler for CPU Cooling

Thermal pad on a heatsink

Avoid Common Mistakes

When using thermal pads or thermal paste, there are some mistakes that are often made. So, here are some ideas to avoid those:
Never use thermal compounds and thermal pads together. Just because you use both, the effect won’t increase. The reverse is true.  Adding thermal grease on top of a thermal pad actually reduces the ability of heat to flow to the heatsink.
Also, never stack several pads on top of each other. Two or three pads on top of each other between the CPU and a heatsink might kill the CPU.