HP 400 G9, Core i7-12700T, 16GB, 1TB SSD

A tiny desktop with a big-brain CPU that's perfect for office work. Skip it if you need graphics muscle or more than 16GB of RAM.

The i7-12700T surprised us in the best way. This is a 35W chip that still manages to deliver desktop-class responsiveness thanks to Intel's hybrid architecture. The 8 performance cores and 4 efficiency cores handle multitasking like a champ. Our database puts the CPU right around the middle of the pack for mini PCs, but that undersells how smooth everyday tasks feel. The 1TB NVMe SSD is a solid performer too, landing in the top quarter of our storage benchmarks. The integrated UHD 770 graphics are fine for driving up to three 4K displays, which is honestly more than most office setups need. Just don't expect to render anything 3D.

Stacked against something like the Lenovo Legion Tower 7i Gen 10 or the ASUS ROG GM700, the HP 400 G9 looks like a different species entirely. Those are gaming rigs with discrete GPUs and power supplies that could run a small appliance. The HP is a business tool, and it's better compared to other mini PCs in its class. The Apple Mac Studio M5 Max absolutely destroys it in raw performance, but that's a $2,000+ machine aimed at creative pros. For a compact office desktop, the HP holds its own where it matters: quiet operation, low power draw, and enough CPU muscle to keep a knowledge worker productive all day.

Without a price attached, we can't give you the full picture. But based on the specs and the 4.5-star rating from 20 buyers, this is a machine that delivers where it counts for office work. If you can find it at a reasonable price, the combination of that i7-12700T and 1TB SSD makes it a compelling buy. Just know that 16GB of RAM is the ceiling you'll be living with, and DDR4 isn't getting any faster.

The HP 400 G9 is a tiny workhorse that punches above its weight class for office duty. The headline here is the Intel Core i7-12700T, a 12-core, 20-thread chip that chews through spreadsheets, video calls, and a dozen browser tabs without breaking a sweat. It's not going to win any gaming awards, but for getting actual work done in a package the size of a hardcover book, this thing is quietly excellent.

HP packed a 1TB NVMe SSD and 16GB of DDR4 into a chassis that's just 17.7 x 17.5 x 3.4 cm. That's small enough to hide behind a monitor with the VESA mount, which is exactly where this belongs. The port selection is genuinely useful too, with dual USB-C, four USB-A, DisplayPort, and HDMI all present.

If you're looking for a machine that can handle gaming, video editing, or any kind of 3D work, this isn't it. The integrated UHD 770 graphics are a dead end for anything beyond driving displays. Go grab something with a discrete GPU instead, like the ASUS ROG GM700 or a Lenovo Legion Tower. And if you need serious RAM headroom for virtual machines or data crunching, look elsewhere, 16GB is a hard ceiling for comfort here.

The HP 400 G9 is a purpose-built office machine that nails its brief. It's compact, quiet, and the i7-12700T is more than enough for the kind of work most people actually do. The 16GB RAM ceiling is the one real compromise, and the misleading Wi-Fi 6E marketing is annoying. But if you need a reliable, space-saving desktop for work and you're not editing video or gaming, this is an easy recommendation.