The GIGABYTE B550I Aorus Pro AX Motherboard Review: All The Small Things
by Gavin Bonshor on December 7, 2020 10:00 AM ESTBoard Features
The GIGABYTE B550I Aorus Pro AX is a mini-ITX motherboard with a premium feature set and takes full advantage of its size regarding PCIe 4.0 support from the Ryzen 3000 and 5000 series processors. It has a single full-length PCIe 4.0 x16 slot from the CPU, with one PCIe 4.0 x4 M.2 slot mounted onto the front of the PCB with a heatsink that doubles up to keep the B550 chipset cool. The second M.2 slot operates at PCIe 3.0 x4 and supports SATA drives, although this slot doesn't include a heatsink. There are four straight angled SATA slots for other storage devices and peripherals, which include support for RAID 0, 1, and 10 arrays. The board features two memory slots with support for up to DDR4-5100 memory and a maximum capacity of up to 64 GB.
| GIGABYTE B550I Aorus Pro ITX Motherboard | |||
| Warranty Period | 3 Years | ||
| Product Page | Link | ||
| Price | $179 | ||
| Size | ITX | ||
| CPU Interface | AM4 | ||
| Chipset | AMD B550 | ||
| Memory Slots (DDR4) | Two DDR4 Supporting 64 GB Dual Channel Up to DDR4-5100 |
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| Video Outputs | 2 x HDMI 2.1 1 x DisplayPort 1.4 |
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| Network Connectivity | Realtek RTL8125 2.5 GbE Intel AX200 Wi-Fi 6 |
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| Onboard Audio | Realtek ALC1220-VB | ||
| PCIe Slots for Graphics (from CPU) | 1 x PCIe 4.0 x16 | ||
| PCIe Slots for Other (from PCH) | N/A | ||
| Onboard SATA | Four, RAID 0/1/10 (B550) | ||
| Onboard M.2 | 1 x PCIe 4.0 x4 1 x PCIe 3.0 x4/SATA |
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| USB 3.1 (10 Gbps) | 1 x Type-A Rear Panel 1 x Type-C Rear Panel |
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| USB 3.0 (5 Gbps) | 4 x Type-A Rear Panel 1 x Type-A Header (2 x ports) |
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| USB 2.0 | 1 x Type-A Header (2 x ports) | ||
| Power Connectors | 1 x 24-pin ATX 1 x 8pin CPU |
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| Fan Headers | 1 x CPU (4-pin) 2 x System (4-pin) |
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| IO Panel | 4 x USB 3.1 G1 Type-A 1 x USB 3.1 G2 Type-A 1 x USB 3.1 G2 Type-C 1 x Network RJ45 2.5 G (Realtek) 3 x 3.5mm Audio Jacks (Realtek) 2 x Intel AX200 Antenna Ports 1 x Q-Flash Button 1 x DisplayPort 1.4 Output 2 x HDMI 2.1 Output |
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Focusing on the premium controller set, the B550I Aorus Pro AX features a Realtek RTL8125 2.5 GbE controller, with wireless connectivity coming via an Intel AX200 Wi-Fi 6 interface which also includes support for BT 5.0 devices. The audio is handled by a Realtek ALC1220-VB HD audio codec which adds three 3.5 mm audio jacks to the rear panel, while USB support is limited due to the board's size. This includes one USB 3.2 G2 Type-C, one USB 3.2 G2 Type-A, and four USB 3.2 G1 Type-A ports. Also on the rear panel is a pair of HDMI 2.1 video outputs, as well as a single DisplayPort 1.4 output, with a Q-flash button designed to allow users to update the board's firmware without the need for a CPU or memory installed. Other connectivity includes three 4-pin fan headers, including one for a CPU and an addressable RGB and standard RGB LED header pairing.
Test Bed
As per our testing policy, we take a high-end CPU suitable for the motherboard released during the socket’s initial launch and equip the system with a suitable amount of memory running at the processor maximum supported frequency. This is also typically run at JEDEC subtimings where possible. It is noted that some users are not keen on this policy, stating that sometimes the maximum supported frequency is quite low, or faster memory is available at a similar price, or that the JEDEC speeds can be prohibitive for performance. While these comments make sense, ultimately very few users apply memory profiles (either XMP or other) as they require interaction with the BIOS. Most users will fall back on JEDEC supported speeds - this includes home users and industry who might want to shave off a cent or two from the cost or stay within the margins set by the manufacturer. Where possible, we will extend out testing to include faster memory modules either at the same time as the review or a later date.
| Test Setup | |||
| Processor | AMD Ryzen 3700X, 65W, $329 8 Cores, 16 Threads, 3.6 GHz (4.4 GHz Turbo) |
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| Motherboard | GIGABYTE B550I Aorus Pro AX (BIOS F11g) | ||
| Cooling | Corsair H100i 240 mm AIO | ||
| Power Supply | Thermaltake Toughpower Grand 1200W Gold PSU | ||
| Memory | 2x8GB G.Skill TridentZ DDR4-3200 16-16-16-36 2T | ||
| Video Card | ASUS GTX 980 STRIX (1178/1279 Boost) | ||
| Hard Drive | Crucial MX300 1TB | ||
| Case | Open Benchtable BC1.1 (Silver) | ||
| Operating System | Windows 10 1909 | ||
Readers of our motherboard review section will have noted the trend in modern motherboards to implement a form of MultiCore Enhancement / Acceleration / Turbo (read our report here) on their motherboards. This does several things, including better benchmark results at stock settings (not entirely needed if overclocking is an end-user goal) at the expense of heat and temperature. It also gives, in essence, an automatic overclock which may be against what the user wants. Our testing methodology is ‘out-of-the-box’, with the latest public BIOS installed and XMP enabled, and thus subject to the whims of this feature. It is ultimately up to the motherboard manufacturer to take this risk – and manufacturers taking risks in the setup is something they do on every product (think C-state settings, USB priority, DPC Latency / monitoring priority, overriding memory sub-timings at JEDEC). Processor speed change is part of that risk, and ultimately if no overclocking is planned, some motherboards will affect how fast that shiny new processor goes and can be an important factor in the system build.
| Hardware Providers for CPU and Motherboard Reviews | |||
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Corsair AX860i + AX1200i PSUs |
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meacupla - Tuesday, December 8, 2020 - link
yup, that's exactly what happens.The only remaining fix I could think of was replacing the soldered in BIOS chips
star-affinity - Tuesday, December 15, 2020 - link
Just wanted to say that my problems was resolved with a new power supply! So now the Gigabyte motherboard is working fine again, believe it or not. :)duploxxx - Tuesday, December 8, 2020 - link
not to mention cold boot - bios resets - unable to save q-fan profiles etc...I was very impressed by the x370 although it lacked some easy visual design.
The x570 gigabyte is not worth the money, would stay away from it as much as possible.
I also own an Asrock B450 board, a much better bios layout.
Dug - Tuesday, December 8, 2020 - link
Strange. I have Gigabyte going back to p965 with no issue.No issue with my x570 aorus pro wifi like you describe either, like thousands of others.
kkilobyte - Tuesday, December 8, 2020 - link
I - and others - have zero idea on what is triggering the issue. There is clearly something fishy going on with the power distribution on the Aorus X570, but so far, it was not possible to pinpoint the origin of it. ErP, USB load, PSU, DisplayPort, Sleep modes, RAM modules all have been suspected, but none of those elements led to anything conclusive. There is a +20 pages thread on hardforum.com about it. I tried to probe the issue with my scope, but it happens completely randomly; so far, it happened to me 3 times in about 8 months, and last time it happened, I was in a hurry and couldn't test.Doing a CMOS reset through the jumper doesn't solve the issue; it could thus mean that it is not a cmos-ram corruption, but a more fundamental electrical issue. My best bet is that somehow a power spike at shutdown is sometimes high enough to wrongly toggle a signal line that 'locks' one of the components kept alive by the battery.
Finding the solution would require identifying the components that are kept powered by the cmos battery; without precise motherboard schematics, however, that's going to be difficult; even if it gets identified, I don't see how it would be solved without some sort of hardware hacking.
My personal solution is to design an arduino-based circuit that plugs on the battery connector of the motherboard, and allows a 'reset' through a front panel button. It's less than ideal, but that's better than having to open the case and remove my gfx card just to get the battery out.
mkarwin - Tuesday, December 15, 2020 - link
Well if CMOS reset does not fix the issue there's either a failing BIOS chip or circuitry throughout the board's layers... Theoretically one could pinpoint the issue by replacing the BIOS chip...BTW. I honestly wonder why they haven't thought of putting BIOS(es) on microSD cards, some of those smaller ones would be dirt cheap nowadays and capacituous enough to handle modern UEFI BIOSes - easy to remove/replace/reflash, could maybe improve the consumer attitude towards the issue if it is related to BIOS chips...
hansip87 - Monday, December 7, 2020 - link
What i don't understand with AMD mini ITX board is how few are their USB ports available at the back. one of the reasons why i chose going intel route was that there is this cheap Asrock Z490 itx board with 8 USB ports at the back. Sure it;s not the only factor but why can't any of AMD ITX boards do the same?romrunning - Monday, December 7, 2020 - link
Well, you can always just get a plug-in USB hub if you need more. I think the mfgs don't add as many USB ports mostly as a cost-savings.mkarwin - Tuesday, December 15, 2020 - link
Seems quite odd considering they are still asking more ($) for less (size & features)... It's not like they're running out of space on I/O shield, there's no integrated massive cooling openings in most cases, so adding eg. 4 extra even 2.0 USB ports would be more beneficial than having 3 display outputs for the integrated Radeon solutions... I could see a future where more integrated display outputs is beneficial - if they allow adding those server/compute accelerators without display outputs so that they could pass through the display to those board integrated ports. Otherwise, I think maybe 1 HDMI is enough. Especially if you can use said HDMI to pass through audio from the integrated card as well...jeremyshaw - Monday, December 7, 2020 - link
Probably the massive AMD AM4 keep out area. It doesn't really matter for mATX and ATX, but for mITX, every mm^2 matters. But every B550 ITX board is flawed in some way.ASUS hates rear I/O altogether, ASRock ditches the S/PDIF and doesn't have all that many USB ports (still more than ASUS). Gigabyte's never head of USB-C headers, and MSI gets all of that right, but has a proprietary backplate.
X570 came out a year earlier and is worse in many ways. ASUS is pricing their top end board for people without sense, and all of the X570 mITX boards from all other vendors lack the USB-C header. All of them are also 1GbE only, which seems like a waste for such a fast platform. ASRock has TB3, but only one M.2 slot, and very few USB ports.
In the end, I've held off upgrading my old AB350 Fata1ity ITX, since nothing is really appealing w.r.t. upgrading (not to mention almost twice the price!). Ryzen 5000 might force my hand, but I'd still rather not "upgrade" to boards that are very flawed (IMO) vs their Intel counterparts.
On Intel, all is not perfect, but there are more "perfect" boards that don't have these same issues.