Gigabyte AORUS Ultra G2 Review – Best Z490 Motherboard 2020
When it comes to Gigabyte’s high-end motherboards, many enthusiasts may have higher expectations. Previously, Gigabyte’s high-end motherboards needed to be improved most because of their poor support for high-frequency memory. However, starting from Z490, Gigabyte has focused on enhancing memory overclocking capabilities. The Z490 AORUS PRO AX motherboard we tested before can support 4800MHz+ memory, and its overclocking capability has reached the top level.
Recently, we received the Z490 AORUS ULTRA G2 motherboard for review which claims to be able to support 5000MHz+ memory frequency. This is a customized version of G2 Team jointly launched by Gigabyte and G2 E-sports Club. It is not only full of performance, but also full of faith.
GIGABYTE Z490 AORUS ULTRA G2 is born out of Z490 AORUS ULTRA. It adopts 13-phase digital power supply and ISL69138 PWM master control, with SiC620A DrMOS that supports 60A current, and can output more than 700W of power to the CPU.
The Z490 AORUS ULTRA G2 motherboard enhances the heat dissipation performance of the CPU power supply module. Gigabyte specially made the heat sink red to highlight the difference. Other motherboards are made of a solid aluminum heat sink, while the Z490 AORUS ULTRA G2 uses large-area heat sink fins.
The heat dissipation efficiency is much higher than that of traditional heat sinks. This is conducive to overclocking high-end processors.
One of the biggest changes of GIGABYTE Z490 AORUS ULTRA G2 compared to Z490 AORUS ULTRA is the above ESSential USB DAC, which has a 32bit384KHz sampling rate, -138dB signal-to-noise ratio, and can drive 300Ω high-impedance headphones with a frequency response range of 20Hz~ 40KHz.
This USB DAC can be plug and play on the PC, and it can also support Android phones, which can meet the needs of users who are pursuing high-quality music. After all, the current mobile phones are taking pictures, and there is not much effort in terms of sound quality. There are very few mobile phones that can push 300Ω impedance.
Now that the Z490 AORUS ULTRA G2 motherboard has super memory overclocking capabilities, what efforts have GIGABYTE done to this end?
The G2 team logo on the box is very conspicuous. Open the box, you can see the hot gold AORUS LOGO and G2 team logo.
The appearance of the motherboard is similar to that of the Z490 AROUS ULTRA, but a lot of elements from the G2 team have been added.
12+1 phase power supply design, each phase power supply is equipped with a 55A SiC620A DrMOS, so the Z490 AORUS ULTRA G2 motherboard can theoretically output more than 600W of power to the CPU.
Unlike other motherboards that are a solid aluminum heat sink, the red VRM heat sink of the Z490 AORUS ULTRA G2 uses large-area heat sink fins, and the heat dissipation efficiency is much higher than that of traditional heat sinks.
The Z490 AORUS ULTRA G2 motherboard has enhanced support for high-frequency memory, which can support 5000MHz+ DDR4 memory.
The 4 DIMM slots are all reinforced with alloy, and can support a single 32GB at most, and the total capacity can reach 128GB.
For expansion slots, it is equipped with 3 PCIe x16 full-size slots.
A PCIe x16 slot close to the CPU is the CPU straight out, and the next generation can support PCIe 4.0. In addition, these two slots use PCIe steel armor, which can reduce the damage caused to the slot when the user plugs in or pulls out the graphics card, and is also beneficial to stability.
There is no PCIe x1 slot, but don’t panic, PCIe x1 devices can be directly plugged into PCIe x16 slots.
There are also 3 M.2 22110 interfaces. Back I/O interface, 4xUSB 2.0, 2x USB 3.2 Gen 1, 3x USB 3.2 Gen 2, 2.5Gbps network port, 1xType-C, 2xWi-Fi antenna port, 5*3.5mm, 1x optical audio port, 1xHDMI.
The Z490 AORUS ULTRA G2 motherboard integrates 1 CPU fan 4pin, 1 water cooling fan 4pin, and 6 4pin chassis fan interfaces. Each of the 8 fans can individually set the temperature curve according to the internal temperature of the CPU, MOS, motherboard or chassis.
GIGABYTE’s support for high-frequency memory has not been very good for a long time. This is also the place where GIGABYTE motherboards have been complained the most, so here we first test the overclocking capability of the Z490 AORUS ULTRA G2 motherboard.
The memory used is Zhiqi Royal Halberd F4-4000C15D 8GBx2, this memory frequency is 4000MHz, the timing is surprisingly low, only 15-16-16-36, but the default voltage has also been increased to 1.5V. We appropriately increased the memory voltage to 1.55V, VCCSA voltage to 1.25V, and VCCIO to automatic voltage. At the same time, we overclocked the cache frequency of the processor to 4.8GHz, and finally overclocked the Royal Halberd F4-4000C15D 8GBx2 to 4666MHz 17-18-18- 43.
The memory read, write, and copy speeds are 66004MB/s, 67201MB/s, and 58938MB/s, respectively, and the memory latency is 40.4ns.
Using MemtestPro 4.3 to test the stability after overclocking, the running time was 1 hour and 01 minutes, and the progress reached 117% and still 0 error. It also proved that the Gigabyte Z490 AORUS ULTRA G2 motherboard can run stably when the Royal Halberd F4-4000C15D 8GBx2 set is overclocked to 4666MHz 17-18-18-43 CR2.
Verdict – Now there is no need to question the memory overclocking capabilities of Gigabyte motherboards. After using a daisy-chain serial memory wiring design and adding a memory anti-interference mask, the Z490 AORUS ULTRA G2 motherboard can support 5000MHz+ frequency memory, which is also impressive in terms of memory overclocking capabilities. The measured Zhiqi Royal Halberd F4-4000C15D 8GBx2 set can be overclocked to 4666MHz 17-18-18-43 at a voltage of 1.55V, and it has passed the 100% MEMTEST stability test.
As for CPU overclocking capability, Z490 AORUS ULTRA G2 motherboard may have a slight difference between top-level motherboards, but with a 60A SiC620A DrMOS 13-phase power supply circuit, coupled with powerful VRM heat sink fins, its overclocking capability is not bad. Our i9-10900K processor can stably overclock to 5.2GHz under 1.284V.
However, we still recommend that you use the 5.1GHz frequency and reduce the voltage and power consumption of the processor. The Z490 AORUS ULTRA G2 motherboard can control the VRM temperature below 80 degrees while providing the CPU with a stable power consumption of 230W power consumption. When the processor power consumption reaches 270W or higher, the temperature of the VRM will be higher.
Posted by Mohit Sharma on September 6, 2020 in Reviews