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Supermicro C7X99-OCE (Intel X99) Motherboard Review

By: Steven Bassiri | Socket LGA 2011 in Motherboards | Posted: Mar 31, 2015 1:53 am
TweakTown Rating: 92%Manufacturer: Supermicro

Temperature and Power Consumption

 

System power usage is measured at the AC/DC PSU (the Corsair AX1200i), which I have connected to another system to measure the test system, and I have a wall meter as a backup to verify. The CPU power is measured through the eight-pin connection, which is hooked up to a hall effect IC that measures current and puts out a voltage in proportion to the current. A National Instruments ADC logs that voltage; afterward, I convert that into current.

 

supermicro-c7x99-oce-intel-x99-motherboard-review

 

Interestingly, I wasn't able to measure dedicated CPU power, and I believe the reason is that this board doesn't isolate CPU power to the 8-pin connector. To investigate my hunch, I tried running the system without the 8-pin connector, and it worked. However, I do not recommend you do this. Please plug in your 8-pin, or you risk frying your 24-pin. In testing, the 8-pin provided only about 25% of the CPU power, and the rest came from the 24-pin.

 

Note on Thermal Images: In the temperature section, we use our Seek thermal imaging camera to capture the surface temperatures of major components on the board. I look at the VRM, and then all other things that light up the screen. If there is something to worry about, then I will state it; otherwise, I will just show the hotter running parts of the board for fun. Unless a component is over 80-90C, then there really isn't anything to worry about.

 

All systems will act differently, so I will look for commonalities, such as how far from the VRM the heat spreads through the PCB, and the difference in temperature between the front side and backside of the PCB. Keep in mind that the majority of the heat from the VRM goes into the PCB as it is a giant soldered-on copper heat sink. A smaller difference in temperature between the back and front of the PCB points towards a more effective heat sink.

 

Thermal Testing at Stock Speeds:

 

The image on the left is always at idle, and the image on the right is at load.

 

supermicro-c7x99-oce-intel-x99-motherboard-reviewsupermicro-c7x99-oce-intel-x99-motherboard-review

 

Here is full frontal.

 

supermicro-c7x99-oce-intel-x99-motherboard-reviewsupermicro-c7x99-oce-intel-x99-motherboard-review

 

This is up close to the front of the VRM.

 

supermicro-c7x99-oce-intel-x99-motherboard-reviewsupermicro-c7x99-oce-intel-x99-motherboard-review

 

This is up close to the chokes of the VRM.

 

supermicro-c7x99-oce-intel-x99-motherboard-reviewsupermicro-c7x99-oce-intel-x99-motherboard-review

 

This is up close to the back of the VRM.

 

Thermal Testing at 4.5GHz Overclocked Speeds:

 

supermicro-c7x99-oce-intel-x99-motherboard-reviewsupermicro-c7x99-oce-intel-x99-motherboard-review

 

Here is full frontal.

 

supermicro-c7x99-oce-intel-x99-motherboard-reviewsupermicro-c7x99-oce-intel-x99-motherboard-review

 

This is up close to the front of the VRM.

 

supermicro-c7x99-oce-intel-x99-motherboard-reviewsupermicro-c7x99-oce-intel-x99-motherboard-review

 

This is up close to the chokes of the VRM.

 

supermicro-c7x99-oce-intel-x99-motherboard-reviewsupermicro-c7x99-oce-intel-x99-motherboard-review

 

This is up close to the back of the VRM.

 

It's quite amazing how the results of the IR3556 and IR3580 are pretty similar depending on the quality of the chokes and PCB. This board performs as well as the best overclocking motherboards I have tested when it comes to VRM thermal performance. It is definitely a keeper, and while it has a small heat sink for the VRM, it doesn't get toasty and seems to do its job fairly well.

 

The temperatures on the front and back seem to be within 1C of each other, which means the heat sink is doing its job and becoming more saturated with heat; this is probably because of the good contact between the VRM power stages and VRM heat sink.

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