System Performance

Not all motherboards are created equal. On the face of it, they should all perform the same and differ only in the functionality they provide - however this is not the case. The obvious pointers are power consumption, but also the ability for the manufacturer to optimize USB speed, audio quality (based on audio codec), POST time and latency. This can come down to manufacturing process and prowess, so these are tested.

Power Consumption

Power consumption was tested on the system while in a single MSI GTX 770 Lightning GPU configuration with a wall meter connected to the OCZ 1250W power supply. This power supply is Gold rated, and as I am in the UK on a 230-240 V supply, leads to ~75% efficiency > 50W, and 90%+ efficiency at 250W, suitable for both idle and multi-GPU loading. This method of power reading allows us to compare the power management of the UEFI and the board to supply components with power under load, and includes typical PSU losses due to efficiency. These are the real world values that consumers may expect from a typical system (minus the monitor) using this motherboard.

While this method for power measurement may not be ideal, and you feel these numbers are not representative due to the high wattage power supply being used (we use the same PSU to remain consistent over a series of reviews, and the fact that some boards on our test bed get tested with three or four high powered GPUs), the important point to take away is the relationship between the numbers. These boards are all under the same conditions, and thus the differences between them should be easy to spot.

Power Consumption: Long Idle with GTX 770

Power Consumption: Idle with GTX 770

Power Consumption: OCCT Load with GTX 770

As was perhaps expected, the motherboards with the mode controllers end up drawing the most power. At idle and long idle, the X99-E-10G (at the wall) seems to consume a good portion of power, but during load the other big controller boards seem to draw more, making the CPU efficiency of the ASUS board quite good.


Different motherboards have different POST sequences before an operating system is initialized. A lot of this is dependent on the board itself, and POST boot time is determined by the controllers on board (and the sequence of how those extras are organized). As part of our testing, we look at the POST Boot Time using a stopwatch. This is the time from pressing the ON button on the computer to when Windows 7 starts loading. (We discount Windows loading as it is highly variable given Windows specific features.) 

Windows 7 POST Time - Default

Windows 7 POST Time - Stripped

With extra controllers comes extra POST time, so moving nearer 50 seconds for a stock POST is not unexpected.

Rightmark Audio Analyzer 6.2.5

Rightmark:AA indicates how well the sound system is built and isolated from electrical interference (either internally or externally). For this test we connect the Line Out to the Line In using a short six inch 3.5mm to 3.5mm high-quality jack, turn the OS speaker volume to 100%, and run the Rightmark default test suite at 192 kHz, 24-bit. The OS is tuned to 192 kHz/24-bit input and output, and the Line-In volume is adjusted until we have the best RMAA value in the mini-pretest. We look specifically at the Dynamic Range of the audio codec used on board, as well as the Total Harmonic Distortion + Noise.

Rightmark: AA, Dynamic Range, 24-bit / 192 kHz

Rightmark: AA, THD+N, 24-bit / 192 kHz

Despite audio not being a primary feature of the X99-E-10G WS, the performance (as with most ASUS boards) is in the top half of our testing and right ner the top. The fact that ASUS holds the top five spots in our X99 THD+N testing is rather impressive.

USB Backup

For this benchmark, we transfer a set size of files from the SSD to the USB drive using DiskBench, which monitors the time taken to transfer. The files transferred are a 1.52 GB set of 2867 files across 320 folders – 95% of these files are small typical website files, and the rest (90% of the size) are small 30 second HD videos. In an update to pre-Z87 testing, we also run MaxCPU to load up one of the threads during the test which improves general performance up to 15% by causing all the internal pathways to run at full speed.

Due to the introduction of USB 3.1, as of June 2015 we are adjusting our test to use a dual mSATA USB 3.1 Type-C device which should be capable of saturating both USB 3.0 and USB 3.1 connections. We still use the same data set as before, but now use the new device. Results are shown as seconds taken to complete the data transfer.

USB 3.0 Copy Times

USB 3.1 Copy Times

DPC Latency

Deferred Procedure Call latency is a way in which Windows handles interrupt servicing. In order to wait for a processor to acknowledge the request, the system will queue all interrupt requests by priority. Critical interrupts will be handled as soon as possible, whereas lesser priority requests such as audio will be further down the line. If the audio device requires data, it will have to wait until the request is processed before the buffer is filled.

If the device drivers of higher priority components in a system are poorly implemented, this can cause delays in request scheduling and process time.  This can lead to an empty audio buffer and characteristic audible pauses, pops and clicks. The DPC latency checker measures how much time is taken processing DPCs from driver invocation. The lower the value will result in better audio transfer at smaller buffer sizes. Results are measured in microseconds.

DPC Latency

While a result of 110 is not the best X99 result, given the recent set of 250 microsecond results we've been seeing on the 100-series board, anything below that is pretty good.

ASUS X99-E-10G WS Software CPU Performance, Short Form


View All Comments

  • Notmyusualid - Friday, December 2, 2016 - link

    TB3 IS great! - but not for the use case you describe, I think. Reply
  • r3loaded - Monday, November 7, 2016 - link

    So why exactly IS 10G so expensive? Is there some inherent technical reason, or is it just Intel doing what Intel does best with a captive market over which they have a near monopoly? Reply
  • jhh - Monday, November 7, 2016 - link

    Volume. There is a certain amount of engineering involved in making the NIC, and if you expect to sell 100,000, you recoup that engineering expense differently than if you expect to sell 10,000,000. I'm sure the volume is somewhere between those two targets. Volume will be limited if for no other reason that most devices connect via WiFi, and that until WiFi routers come with something other than a 1G port, it's hard to drive the market for 10G. The server environment is different, but fewer servers are sold than laptop/tablet/phone. No one is selling > 1G Internet to the residential market, so even that option isn't driving the market. One is then limited to people with the need to transfer at more than 1G speeds within a residence, and that market is small. Servers tend to use fiber, as the signal processing to support 10G over copper was historically adding significant latency compared to fiber. Fiber is also more forward compatible to 25G than copper, as every speed transition has always required different cables. Unless you are installing Cat 7a wire and proprietary connectors, but they aren't directly compatible with 1G wiring. Reply
  • Communism - Monday, November 7, 2016 - link

    The price per thousand is down to 80 USD for the controller (Which provides 2x 10G base-t ports), meaning one could theoretically integrate it into an x99 (or the boards coming out for Skylake-E/X) for around that much if you could get enough traction to be able to put them in a board with a significant portion of sales.

    This sounds entirely feasible, unfortunately, they seem to be stuck on boards that are made purely for manufacturer advertising with hilarious prices like 700 USD.

    Integrating such a controller is simple, as it's just a PCIe 3.0 x4 device.

    Hopefully at least 1 of the major board manufacturers starts making reasonable integrations with the X550-AT2 controller in the Skylake-E/X generation boards.
  • bronan - Friday, November 11, 2016 - link

    Intel sold their 10G cards for under 100 dollar each, when companies jumped onto them they slowly upped the prices to the max. These cards can be sold for under 50 dollar each but the hunger for huge profits will not allow that Reply
  • BillR - Tuesday, November 8, 2016 - link

    Terrific answer. 1G is everywhere and cost for those ports shows the power of huge volumes on prices. However, 10G is mostly limited to servers and there is a lot of competition for server connections (25G, 40G, 50G, 100G, Infiniband, etc.). Unfortunately fragmentation means higher prices. Reply
  • Ranger1065 - Monday, November 7, 2016 - link

    zzzZZzzz..... Reply
  • bronan - Friday, November 11, 2016 - link

    These chips cost really nothing for the gaints, the real prices of these chips are absolute below 10 dollar each. Again intel sold full fledged pci cards if i remember well around 77 dollar thats consumer price. See what happened after the companies started adopted them. I can't believe everbody makes it look like it so expenssive to make chips.... They cost them a few bucks to make thats it not 50 dollar+ my company makes chips for certain installations they costs 0.04 cents each and are sold to companies for 11 cents each ... talking about making profit. Thats the real prices you as consumer pay for that same 11 cents .... 10 dollar+ yes thats how the market works these days enormous profit is all what counts Reply
  • nirsever - Tuesday, November 8, 2016 - link

    In fact, the footprint of the Tehuti Networks based solutions with PHYs from either Marvell or Aquantia are way smaller than the Intel X550 and since they don't require a heat sink, consuming ~5W max (for both MAC and PHY), they are much easier to integrate. The Tehuti Networks solutions are already supporting 2.5G and 5G in addition to standard 10GBase-T. You can find Tehuti Networks based 5-speed NIC cards already selling today for ~$200 while this figure is expected to drop significantly once new Marvell 802.3bz PHYs will start shipping in volumes early next year Reply
  • nirsever - Tuesday, November 8, 2016 - link

    Please take a look at what you can expect from Tehuti Networks and Marvell new PHY:

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