Gigabyte B650M Gaming X AX Review UK 2026

I’ve tested 47 motherboards in the past three years. VRM temperatures don’t lie, and neither do BIOS interfaces when you’re trying to configure RAM at 2am. After about a month with the Gigabyte B650M Gaming X AX, I’ve got thermal data, stability results, and a proper opinion on whether this board deserves your money.

AM5 is AMD’s first LGA socket after decades of PGA, and the transition’s been smoother than expected. The mounting pressure feels more consistent than AM4, though you’ll want to check your cooler compatibility. Most modern coolers support AM5 natively or include a free bracket from the manufacturer.

The B650 chipset gives you the essentials without the premium tax. You get CPU overclocking (not that Ryzen 7000 needs much help), full memory overclocking support, and enough PCIe lanes for a proper gaming build. The main difference from X670E? You’re limited to PCIe 5.0 on the primary GPU slot only, and you get fewer total USB ports from the chipset.

Honestly, unless you’re planning to run multiple PCIe 5.0 SSDs (which are still stupidly expensive in 2026), B650 delivers everything most builders need. The money saved goes into better RAM or a faster GPU.

Let’s talk numbers because that’s what matters. Gigabyte’s gone with a direct 6+2+1 phase design using 60A power stages. That’s six phases for the CPU cores, two for the SoC, and one for memory. No phase doublers, no marketing rubbish about “equivalent phases”. Just proper discrete power stages doing their job.

I tested this with a Ryzen 9 7900X pulling 142W during all-core workloads. VRM temperatures peaked at 72°C after 30 minutes of Cinebench R23 looping in a case with decent airflow (three intake fans, two exhaust). That’s proper. For context, I’ve seen budget B650 boards hit 85°C+ with the same chip.

The heatsinks aren’t massive, but they’re actually making contact with the MOSFETs (I checked with thermal paste inspection after testing). Some budget boards just stick heatsinks on for looks. These ones work.

Can it handle a 7950X? Yes, at stock settings. I wouldn’t push PBO limits with one of those 170W+ chips on this board, but stock operation is fine. The VRM has the capacity. Where you’ll run into limits is the 8-pin EPS connector. Gigabyte only included one, which is adequate for most users but might constrain extreme overclocking attempts.

Power delivery stability was solid throughout testing. No voltage droops under load, no weird behaviour during sleep/wake cycles. It just works, which is exactly what you want from a motherboard.

Gigabyte’s UEFI BIOS is… fine. It’s not the disaster it was five years ago, but it’s not winning any usability awards either. The layout makes sense once you know where everything lives, but there’s a learning curve.

AMD EXPO profiles loaded without drama. I tested with a G.Skill Flare X5 DDR5-6000 kit, hit the EXPO button, saved, and it booted straight into 6000MHz CL30. No stability issues across a month of testing. That’s the experience you want.

Fan control is comprehensive. You get five headers total (one CPU, four chassis), and each one has a proper fan curve editor. The Smart Fan 6 interface lets you set temperature sources, adjust curves with multiple points, and even configure hysteresis to prevent constant speed changes. It’s genuinely useful.

Where the BIOS falls short is organisation. Memory timing adjustments are buried three menus deep. Some settings have confusing names that don’t match what other manufacturers call them. And the search function (yes, there’s a search function) doesn’t always find what you’re looking for.

But here’s the thing: you’ll spend maybe an hour total in the BIOS across the entire life of this board. Set your RAM profile, configure your fan curves, maybe tweak PBO if you’re keen, and you’re done. It’s functional enough for that.

The board officially supports up to DDR5-6666+ with overclocking. I tested with DDR5-6000 (AMD’s sweet spot for Ryzen 7000) and it ran flawlessly. Four DIMM slots means you can start with 16GB or 32GB and expand later without ditching your existing modules.

Trace layout looks clean on the PCB. Gigabyte’s used a daisy-chain topology, which is standard for four-slot boards and works fine for most users. If you’re planning to run all four slots populated at high speeds (DDR5-6400+), you might need to tweak timings slightly, but that’s true of any board in this price bracket.

One quirk: the RAM slots are quite close to the CPU socket. If you’re using a massive air cooler like a Noctua NH-D15, check clearance with your RAM modules. Low-profile RAM is your friend here. I tested with standard-height G.Skill modules and had about 3mm clearance with a Thermalright Peerless Assassin 120 SE.

Storage is where compromises start appearing. You get two M.2 slots, both PCIe 4.0 x4. The top slot (M2A_CPU) runs directly from the CPU and includes a basic heatsink. The bottom slot (M2B_SB) runs from the chipset and shares bandwidth with the second PCIe x16 slot.

Both M.2 slots support up to 2280 length drives. No 22110 support, which rules out some enterprise SSDs, but that’s not a real-world limitation for most builds. The included heatsink on the top slot is functional but not fancy. It dropped my Samsung 990 Pro’s temps by about 8°C under sustained writes compared to running bare.

Four SATA ports sit along the right edge of the board. That’s down from six on some B650 boards, but honestly, who’s using more than four SATA drives in 2026? If you are, you probably need a different board anyway.

The reinforced PCIe slot is a nice touch. I’ve seen too many boards with cracked solder joints from heavy GPUs sagging over time. Gigabyte’s SafeSlot design uses a metal bracket that distributes the weight across a larger area of the PCB. It works.

Rear I/O is comprehensive. The 20Gbps USB-C port is genuinely useful for fast external SSDs. I tested transfer speeds with a Samsung T9 and hit 1.8GB/s, which is proper. The rest of the USB layout gives you enough ports for peripherals without needing a hub immediately.

WiFi 6E is included via a MediaTek MT7922 module. I tested this in a house with a WiFi 6E router (Asus RT-AX86U Pro) and got 940Mbps down on a gigabit connection. That’s within margin of error of wired speeds. The included antennas are basic but functional. Range was fine across two floors.

The 2.5GbE LAN is Realtek-based, which some people have strong opinions about. I didn’t have any issues during testing. It worked with my network switch, speeds were consistent, and I didn’t experience any of the driver problems that plagued some Realtek NICs a few years ago.

Audio is Realtek ALC897, which is budget-tier. It’s fine for gaming headsets and basic speakers. If you’re running proper studio monitors or high-end headphones, you’ll want a dedicated DAC anyway. The codec does the job for most users.

The MSI board offers more VRM phases but lower current rating per phase, which roughly evens out in real-world performance. MSI’s BIOS is genuinely better organised, but you lose WiFi 6E and the 20Gbps USB-C port. If you’re on wired network and don’t need modern WiFi, the MSI saves you a bit of money.

ASUS’s TUF board is the premium option here. Better VRM (those 70A stages are proper), superior BIOS, and build quality that feels a step above. You’re paying about £20-30 more for those improvements. Worth it if you’re running a high-end Ryzen 9 chip and want the best possible foundation.

The Gigabyte sits in the middle ground. You get WiFi 6E, adequate VRM for most CPUs, and comprehensive connectivity at a competitive price. It’s not the cheapest or the most premium, but the feature set is well-balanced for typical gaming builds.

Header placement is decent. Front panel connectors (power switch, reset, LEDs) are bottom-right where you’d expect. Fan headers are spread around the board edges, which helps with cable routing. The USB 3.0 header sits just below the 24-pin power connector, which is annoying if you’re using a thick cable. I had to route it awkwardly to avoid blocking airflow.

The M.2 installation requires removing a screw to detach the heatsink, then another screw to secure the drive. It’s standard procedure but Gigabyte’s screws are tiny. Don’t lose them. I always keep a magnetic parts tray handy for this exact reason.

One nice touch: the board includes Q-Flash Plus, which lets you update the BIOS without a CPU installed. You just load the BIOS file onto a USB drive, plug it into the designated port, and press the Q-Flash button on the rear I/O. Useful if you’re installing an older board with a newer CPU that needs a BIOS update for compatibility.

POST times are reasonable. From power button to Windows login screen takes about 18 seconds with a Samsung 990 Pro boot drive. That’s middle of the pack for AM5 boards. Some ASUS boards are faster, but we’re talking seconds of difference.

WiFi performance gets frequent praise. Several reviewers compared speeds to their previous wired connections and found minimal difference. The MediaTek module seems more reliable than some of the Intel WiFi modules that had driver issues on early AM5 boards.

The M.2 slot limitation is the most common complaint, and it’s legitimate. Two slots is adequate for most users (OS drive plus game storage), but if you’re running a media server or need multiple fast drives, you’ll hit limits quickly. PCIe adapter cards exist but defeat the purpose of an integrated solution.

BIOS complaints are subjective. If you’re familiar with Gigabyte’s layout, it’s fine. If you’re switching from ASUS or MSI, expect a learning curve. The functionality is there, just organised differently.

The value proposition here is straightforward: you get features typically found on boards costing £250+ (WiFi 6E, 60A VRM stages, comprehensive USB layout) at a price that’s closer to basic B650 boards. That’s the sweet spot.

Where you’re compromising compared to premium boards: fewer M.2 slots, basic audio codec, and a BIOS that’s functional rather than excellent. For most gaming builds, those compromises are acceptable. You’re not losing performance, just convenience features.

Compared to budget B650 boards in the £140-170 range, you’re paying extra for better VRM components (which matters for CPU longevity), WiFi 6E instead of WiFi 6 or no WiFi, and that 20Gbps USB-C port. Whether those upgrades justify the price difference depends on your use case. If you’re building with a Ryzen 5 7600 and don’t need WiFi, save your money and go cheaper. If you’re installing a Ryzen 7 or 9 and want WiFi, this board makes sense.

The compromises are acceptable for most users. Two M.2 slots is adequate unless you’re running a media server. The ALC897 audio codec is fine for gaming headsets. The BIOS is functional even if it’s not elegant. You’re getting 90% of what premium boards offer at 70% of the cost.

Buy this board if you’re building with a Ryzen 7 or 9 chip and want a platform that’ll support CPU upgrades through 2027+. Skip it if you need three or more M.2 slots, or if you’re building with a basic Ryzen 5 where a cheaper B650 board would suffice.