EKWB EK-FB MSI X299 + X360: more than 500 W, VRM below 60 °C

How we were testing

For LGA 2066, liquid cooling is more beneficial than for any other platform before. Especially for Core i9-7980XE. Compared to EKWB full cover monoblock with a decent engine and evaporator, even NH-D15 looks like a dwarf. Not only does the liquid cooler open up for higher frequencies, but it also significantly improves the operating features with settings that can be barely handled by conventional coolers.

The reaction of EKWB to increased cooling needs due to Skylake-X is quite clever – several new water blocks that in addition to CPU also deal with coils and VRM heating. We acquired the Model for motherboards MSI Gaming M7 ACK and Pro Carbon (AC). The base is made of a nickel-plated copper and an acrylic glass. Net weight is 601 g.

How we were testing

The circuit was built from the X360 set. The key components were the 6 cm thick 360-mm CoolStream XE radiator and XTOP DDC pump which was constantly connected (12 V) during the tests. We only adjusted the airflow of the fans. All tests were carried out in two modes, with maximum cooling power at 12 V (~ 1625 rpm) and relatively quiet 7 V (~ 690 rpm). Fans are 120mm Vardar F3.

As part of preparations, we formatted the pipes to 45 cm, rinsed and deaerated the radiator and the water block. We used standard technical distilled water with an anti-corrosion admixture – EK-CryoFuel.

Test procedures were based on the test of Core i9 with Noctua NH-D15. We just added one thermocouple to monitor the liquid temperatures. Thanks to this, we could, for example, accurately determine the initial temperature of each test. The second thermocouple was placed at the warmest spot of the power supply circuit on the VRM casing. We recommend to be careful during the assembly of the block. Watch out for the pressure. Too much force has bended the board a bit and that caused worse contact of VRM with the base of the block. Some modules (via thermalpads) were completely out of contact. The rest of the process is very simple – the part above the processor is attached under the socket by four standard nuts. The block above power supply just needs to be normally screwed.

   

From the previous test, we’ve created several profiles to compare temperatures and consumption. They are tuned properly to achieve maximum efficiency. In addition to undervolting of factory settings, we increased the frequency by hundreds of megahertz (by increasing the multiplier – starting with 42). However, thanks to more efficient cooling of this liquid solution, a lower VID (than with D15) is enough for Prime95. That’s why there are some grey lines in charts, typically with decreased voltage (LV) to a stable minimum. One line is an exception, we used a significantly higher voltage with 4.5 GHz than was required. This is due to the fact that 4.6 GHz could not make it through the really demanding P95 configuration (FFT with constant 128 K and non-delid CPU). But since we wanted to make things truly tough for the cooler, we were looking for a very high voltage that does not make the CPU throttle.

When measuring consumption, the pump (17 W) and fans were not taken into account. They were regulated by external power supply. We took 90 samples between the 11th and 14th minute and put average values to charts. We used Extech 380801 power meter. The consumption of the entire configuration is important, but this is probably the most accurate way to compare the different settings.

We did not monitor just the temperature of the liquid in the expansion tank, but also the intake air temperature in our wind tunnel (21 – 21,3 °C). Four fans NF-A12S PWM were regulated to 5 V (approx. 610 rpm).

 

 

  •  
  •  
  •  
  •  
Flattr this!

Undervolting and overclocking of Ci9-7980XE with NH-D15

Skylake-X is a significantly more flexible generation of high-end processors than the previous one. Not only because of an unprecedented performance, but also thanks to a more reasonable consumption. Let’s take a look at the impact of different CPU settings on performance and functional features. These tests revealed also how economical can a configuration be with a more efficient cooling. Read more “Undervolting and overclocking of Ci9-7980XE with NH-D15” »

  •  
  •  
  •  
  •  

Mini-ITX board for Skylake-X processors and a water block for it

Mini-ITX boards are great when you want to have the smallest computer possible. They were originally meant for economical low-profile PCs, but today they are also used in gaming computers. However, small size can also be practical on a workstation, so it’s nice to have Intel Skylake-X processors with 18 cores available with ITX format now. It will be possible to buy a Mini-ITX board with the LGA 2066 socket. Read more “Mini-ITX board for Skylake-X processors and a water block for it” »

  •  
  •  
  •  
  •  

With X299, temperatures and cooling will be really important

During the recent years, TDP of processors have been declining, 65 W chips have become mainstream, and the things we write about have become a little less important. But this week’s reveal of extreme Intel processors indicates that the competition is now pushing the manufacturers back to straining the hardware to the edge and making things probably much more hot than cold. Read more “With X299, temperatures and cooling will be really important” »

  •  
  •  
  •  
  •  

Leave a Reply

Your email address will not be published. Required fields are marked *