Corsair One i300 desktop PC tames Core i9-12900K and RTX 3080 Ti in a 12-Liter case

The Intel Wi-Fi 6E AX211 module built into the main board is the most current available, so you can also use Wi-Fi 6G networks. Using our current test router, which also supports the newest standard, the Corsair One i300 delivers fast and stable transfer rates in our WLAN test.

Note: Since our test unit was unfortunately sent to us without the original WLAN antennas, we performed this test using alternative antennas. We are currently unable to say whether the transfer rates are even slightly better when using the original antennas.

In case the performance of the Corsair One i300 is insufficient or the storage solution turns out too small, you can also upgrade the computer. However, you should be careful, since the space inside is very limited. The desktop PC can be opened easily. The top case cover with the 140-mm fan is quickly removed and the side covers are only attached with two screws. But then the hoses of the AiOs will hinder a quick replacement of the components. While you can still access the working memory fairly easily, things look more difficult if you want to get to the storage solution. For this reason, we would have liked another option in the available configurations, since there is a total of three M.2 slots on the mainboard. However, the system is already well-equipped with 2 TB of storage.

The Corsair One i300 is equipped with Intel's fastest processor that is currently available for gaming. To be exact, Corsair uses the Intel Core i9-12900K based on a Z690 board from MSI. We were already able to see in advance what performance can be delivered by the new flagship from Intel. For additional details concerning the Intel Core i9-12900K, we refer to this page. However, there is a small limitation in the Corsair One i300 in terms of the maximum power consumption. PL1 and also PL2 are limited to the values of 165 and 175 watts respectively, which means that the processor is slightly throttled under load. Without this limitation, the Intel Core i9-12900K should be able to consume up to 241 watts. On the other hand, this option can be modified in the BIOS. But this would then also result in a higher noise volume and higher temperatures.

In the benchmark we are running, the Intel Core i9-12900K does very well, even if it is unable to use its full performance under load. The performance increase compared to the Corsair One i160 is immense. In the overall rating, the current system offers 48% more performance.

For additional comparisons and benchmarks, we refer you to our CPU comparison chart.

We take a look at the system under constant load using the Cinebench-R15 Multi loop. In this way, we can determine whether the cooling system is powerful enough to cool the processor effectively. In the Corsair One i300, the work of the AiO is very reliable, and the result remains constant even after 50 runs. However, the slightly lower TDP of the Intel Core i9-12900K is clearly noticeable here. If you let the Core i9-12900K run free from the limitations, it can achieve almost 500 points more.

During our testing period, the whole system ran very fast. This is also reflected in the system benchmarks. In the PCMark 10 tests, the Corsair One i300 takes the lead in all the individual tests. Only in the render tests, the Corsair One i300 isn't quite able to keep up due to the graphics card. The Nvidia Titan RTX of the comparison systems is the better choice here, which is due to the closeness to the quad series.