ASUS ROG STRIX X299-E Gaming Review


  • Author: MAC
  • Date: September 27, 2017

Voltage Regulation

Although the X299-E Gaming is part of the ROG lineup, it is still a STRIX variant, so we aren’t surprised that this model does not have any onboard voltage measurement points. It is still regrettable since that is our preferred method of accurately measuring the various system voltages. As a result, in this abbreviated overview, we utilized the AIDA64 System Stability Test to put a very substantial load on the system while also monitoring the stability of the all-important CPU Vcore line. This was achieved with a 60+ minute stress test, and in order to increase the strain on the motherboard’s voltage regulation components we overclocked our Core i7-7700K to 4.7Ghz at 1.25V (in the BIOS).

For whatever reason, the Vcore is being reported as the CPU VID on this platform at the moment. We verified this in AIDA64, HWMonitor_x64, HWiNFO64, and Intel XTU. Nevertheless, as you can see the Vcore is absolutely straight as can be. We did not touch the Load-Line Calibration (LLC) settings, everything aside from the CPU multiplier and the Vcore were at default settings. It is quite possible that ASUS are simply enabling automatically whenever the CPU is overclocked. Either way, clearly the VRM had no issue supplying our power hungry Core i9-7900X.

Power Consumption

For this section, every energy saving feature was enabled in the BIOS and the Windows power plan was changed from High Performance to Balanced. For our idle test, we let the system idle for 15 minutes and measured the peak wattage through our UPM EM100 power meter. For our CPU load test, we ran Prime 95 In-place large FFTs on all available threads, measuring the peak wattage via the UPM EM100 power meter. For our overall system load test, we ran Prime 95 on all available threads while simultaneously loading the GPU with 3DMark Vantage – Test 6 Perlin Noise.

Since this is the first LGA2066 motherboard that we have reviewed we have nothing to directly compare these numbers with. However, they are well inline with our expectations given what we have been seeing elsewhere. The Skylake-X results might seem unbelievably high – even at default settings – but that is because the latest version of Prime95 supports AVX and it causes the i9-7900X’s power demands to skyrocket. On the other side of the spectrum, the i7-7740X power consumption numbers were roughly equivalent to those of our i7-7700K on an ASUS Maximus IX Hero.

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