On the top half of the board, we get a better look at the VRM heatsinks, and we spy the two 8-pin EPS ProCool solid-pin connectors (one required) just above. The heatsinks themselves have a diode/slider-type design on top with a brushed aluminum finish. The two heatsinks are connected via a thermal pad. This is better than leaving them separate, but not as good as a heatpipe that distributes the load more efficiently. As you’ll see later, VRM temperatures were fine, so there’s nothing to be concerned about with that configuration.
Past the socket to the right, the first thing we run into are the four DRAM slots with a single locking mechanism at the top (where you have room to reach it). Asus lists support up to DDR5-8666 MT/s (OC), which is plenty fast for the platform. Curiously, our DDR5-7600 kit, the baseline for new Z890 tests, did not work, but the 8200 MT/s kit did. As per usual, stick with the memory QVL for your best chance of compatibility.
Asus’ Enhanced Memory Profile II (AEMP III) feature (a tuning feature that optimizes the clock driver, memory frequency, and timings), as well as DIMM Fit Pro, give you fixed and user-defined tuning options for full memory timing control for more advanced users, which is useful if you’re comfortable with tweaking; it could be overwhelming for novice tweakers. But just input the parameters you want it to change, reboot, and it works through the process. Once completed, the RAM will be set to its optimum values. It’s a good way to get the most out of your kit.
Above the DRAM slots are the first two (of seven) 4-pin fan headers. Each header supports up to 1A/12W. While this isn’t a lot compared to other boards, it’s enough for several fans, an AIO, or even a custom water loop. Control over these headers is handled through Asus Fan Xpert 4, found in the BIOS or Armoury Crate. Just be careful not to overload the headers. Working our way down the right edge, we run into another 4-pin fan header (AIO_PUMP), and the first two (of three) 3-pin ARGB headers. Below that is the 24-pin ATX connector, a front-panel USB 3.2 Gen 2 (10 Gbps) Type-C header, and, finally, a 19-pin USB 3.2 Gen 1 header — nothing out of the ordinary.
Power delivery on the Prime Z890-P isn’t the most robust we’ve seen, but it is appropriate for this class. It has 18 phases, 14 of which are dedicated to Vcore. Power is supplied to the Digi+ (ASP 2442GQW) controller via the 8-pin EPS connector. From there it heads on to 14 Vishay SIc639 DrMOS 80A MOSETs. The 1,120A available can handle the Core Ultra 7 270K Plus , the Core Ultra 5 250K Plus , and the Core Ultra 9 285K. You can even overclock; just be sure to keep air flowing in your chassis, as the components here will get warm with sustained heavy use.
On the bottom half of the board, we’ll start on the left with the audio section. There, we see a couple of dedicated audio capacitors and the basic Realtek ALC897 codec. While this isn’t the best audio solution, it’s par for the course for most budget boards. You should still be happy with it, as it’s difficult to discern most of them without seeing the actual specifications.
In the middle of the board are multiple full-length PCIe slots, including M.2 sockets. Starting with PCIe, the topmost slot has reinforcement, which Asus calls Safeslot. It is your sole PCIe 5.0 x16 slot and connects through the CPU. The bottom three slots all connect through the chipset, and the middle two run up to PCIe 4.0 x4 and the bottom to PCIe 4.0 x1.
Among and around the PCIe slots are four M.2 sockets. The top socket, M.2_1 above the top PCIe slot and under the heatsink, is your CPU-connected PCIe 5.0 x4 (128 Gbps) socket. The other three M.2s all connect through the chipset and run at PCIe 4.0 x4 (64 Gbps), with M.2_4, the bottom-right socket, also supporting SATA-based M.2 devices. If you plan to use the others with hot-running drives, make sure they have heatsinks to prevent thermal throttling under sustained loads. But if you have a large video card, you won’t be able to use one with a large heatsink, as it will likely be under the video card with limited z-height.
All sockets support up to 80mm modules and can run RAID 0/1/5 modes for redundancy and/or increased speed (RAID is not a backup). Finally, moving past the chipset heatsink to the right edge, are two of the four SATA ports (supports RAID 0/1/5/10) – the other two are mounted vertically along the bottom edge.
Between the PCIe slots, M.2, USB, and SATA ports, there is no lane sharing. You can fill all the slots and sockets and still receive the full bandwidth from each. As great as that is, the compromise is fewer USB ports, many of which are slower (think USB 3.2 Gen 1 and 2.0). But you’ll find this in some flavor on all the boards without multiple USB hubs, as it’s a limitation of the Z890 chipset and the number of available lanes. We've also captured several images of the IC's used to make this motherboard work consisting of a mix of Realtek for USB hub, Ethernet, and audio, and Vishay for MOSFETs.
(Image credit: Future) (Image credit: Future) (Image credit: Future) (Image credit: Future) At the bottom of the board are a slew of headers. It offers your typical set of connectivity in this area, with nothing missing or worth a specific mention. Below we’ve listed all the connections across the bottom of the board.
Flipping the board around to the rear IO, the Prime Z890-P offers basic connectivity for the platform. You get everything, but the eight total USB ports could be a challenge for users who rely on many USB-based devices on the back. On the left, we spy the DisplayPort (v1.4) and HDMI (v2.1) outputs to use with integrated video. Next to it is the tiny BIOS FlashBack button. The next stack holds the 40 Gbps Thunderbolt Type-C port and the only USB 3.2 Gen 2 (10 Gbps) port. Next to that are four USB 2.0 ports, and the Realtek-based 2.5 GbE port stacked on top. Rounding out the USB ports back here are two USB 3.2 Gen 1 (5 Gbps) ports. Continuing right, we find the 3-plug (all 3.5mm – there’s an SPDIF header) audio stack and finally, the quick-connectors for the integrated Wi-Fi 7 (2.9 Gbps). There’s nothing particularly notable here; please confirm you are comfortable with the USB port count and speeds.
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Key considerations
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Reference reading
- https://www.tomshardware.com/pc-components/motherboards/SPONSORED_LINK_URL
- https://www.tomshardware.com/pc-components/motherboards/asus-prime-z890-p-wifi-motherboard-review#main
- https://www.tomshardware.com
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