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Biostar Racing Z270GT9 Motherboard Review

Software & Firmware

The Biostar Racing GT app starts off with a useful system information page and Smart Ear volume and headphone gain controls.

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While the Vivid LED DJ console appears a little basic compared to the LED software of some competitors, it’s still fully capable of changing onboard and LED header color outputs across the RGB spectrum. Capable of setting different colors for the onboard LEDs and each of the two light strip outputs, it includes continuous light, breathing, flashing and music-responsive settings. Onboard LEDs light up all of the white sections of the board’s component covers in the user’s choice of color.

The HW Monitor page includes fan controls, but these are extremely basic and reliant on the motherboard’s integrated program rather than user-defined slopes and/or curves.

The OC/OV menu functioned normally for us, allowing us to set voltage and clock controls from within windows.

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Moving on to firmware, we find basic visual updates that bring the traditional BIOS-type menus at least into the current century, if not the current decade. Our CPU typically reaches 48x 100 MHz at 1.30V, but the Z270GT9 only got close to that mark at 47x 101 MHz.

The Memory Profile setting will not let you enable XMP mode and then change the multiplier when it doesn’t work. Instead you must switch to a full, manually-configured, custom profile if you find that this board or your CPU won’t reach the data rate of your super fast RAM. And this isn’t exactly easy, since the entire range of DRAM ratios aren’t visible simultaneously. Selecting “Memory Reference Clock” between 100 and 133 MHz shows each half of the even ratios (full multipliers), and selecting between QCLK Odd Ratio Disabled or Enabled lets you see either the full or the half multipliers.

(For Newbs: Because DDR is double data rate, a 1x change in multiplier alters the data rate by either 200 or 266 MHz, based on a 100 or 133 MHz BCLK. Referred to as odd ratios, half multipliers are needed to go between settings such as DDR4-2666 and DDR4-2533.)

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It turns out that the Z270GT9 didn’t function correctly when manually configured to the full set of primary and secondary timings for our G.Skill DDR4-3866 kit. We ended up using our kit’s primary timings to keep overclocking comparisons as fair as possible, while allowing the board to select its own secondary timings, and were still only able to reach DDR4-3467.

Intended to push up voltage when it drops under load, the CPU Load-Line Calibration setting of “Level 6” pushed our CPU beyond the 1.30V we’d chosen. Worse, the Level 6 setting didn’t function at all after a crash. Rather than set a lower baseline voltage and constantly CLR_CMOS every time we encountered a problem, we went with Load-Line Level 5. DRAM voltage was particularly aggressive, measuring +34mV over the 1.350V setting and requiring a 1.312V setting to keep it below our 1.355V overclocking comparison limit.

By default, a setting called “Power Limit 1 Override” is disabled and allows the CPU to be aggressively underclocked whenever attempting to stress test an overclock. A little math tells us that 250000 milliamps is 250A, and that this manual setting is more than enough to overcome any throttling issues.

Biostar Memory Insight allows us to see the full set of primary and tertiary timings for our modules, even if the XMP values shown don’t work well with this specific motherboard. Biostar’s auto-configured secondary timings are sometimes tighter than those specified by the DIMMs, yet still allow the board to reach higher data rates.

The software menu for RGB lighting control looked basic, but firmware maximizes the minimalist theme. It still has the same functions however.

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Up to five firmware configurations can be retained as user profiles, and these can also be exported to a flash drive.

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Thomas Soderstrom is a Senior Staff Editor at Tom's Hardware US. He tests and reviews cases, cooling, memory and motherboards.