Compare: NH-L9x65 vs AG400 BK

Design and Aesthetics:

NH-L9x65

The NH-L9x65 features a low-profile design with a slim aluminum heatsink and a 92mm NF-A9x14 PWM fan. With a height of only 65mm, the cooler is compatible with a wide range of PC cases, including mini-ITX and HTPC builds. Aesthetically, the NH-L9x65 maintains Noctua's signature beige and brown color scheme, reflecting the brand's reputation for quality and performance.

AG400 BK

The AG400 series is a single tower 120mm CPU cooler that built upon DeepCool's legacy products but was stripped down for a streamlined and efficient package. It has a simple and clean design, with an aluminum tower and a single 120mm fan. This cooler comes in a variety of colors including black and white, so it matches most computer setups. Additionally, this cooler has RGB lighting which may fit for setups with a RGB focus.

Install Notes:

NH-L9x65

This cooler is designed to be a typical Noctua cooler installation, which is easy to do and rather straightforward. This means that if you're new to installing a CPU cooler, there is little room to make a mistake. For AMD is uses the original AMD backplate. Only downside to the Noctua installation is that the cooler may stick to your CPU and given how the screws are setup, you can't slide the cooler off the CPU like other brands.

AG400 BK

This cooler is moderately difficult to install and is more difficult than other DeepCool cooler installations. For AMD CPU's, the mounting setup can be given that the cooler doesn't secure through holes but rather through notches. For this reason, keeping the backplate flush against the motherboard while also keeping the install components in line may prove to be difficult and may require a second pair of hands. This also has a very similar installation to the AK400.

Cooling Performance:

NH-L9x65

The performance of the NH-L9x65 is suitable for most mainstream CPUs and everyday tasks. It has four heat pipes that efficiently transfer heat away from the CPU to the heatsink. While the cooler may not be the best choice for high-end CPUs with high TDPs or extreme overclocking scenarios, it provides adequate cooling for lower TDP CPUs, especially in small form factor builds with limited space.

AG400 BK

It's designed to work with a wide range of modern CPU sockets and is able to dissipate heat quickly and efficiently. Although this cooler doesn't push out the best cooling performance, it does well for its size with performance slightly below the Noctua NH-U12S Redux. For this reason, this cooler is best for CPUs that need a moderate cooling solution.

Noise Performance:

NH-L9x65

The 92mm NF-A9x14 PWM fan included with the NH-L9x65 is designed for quiet operation while maintaining good airflow for its size. Noctua fans are well-known for their excellent acoustic performance, and the NH-L9x65 is no exception. Users can expect quiet cooling even during low workloads, however due to it's limited cooling abilities, it may have to run louder moderate workloads or gaming sessions.

AG400 BK

This cooler has an above average noise profile, making it louder than most comparable air coolers. This means that you might experience more noise while your PC is running, which could be a drawback if you're sensitive to noise or prefer a quiet workspace. If having a quiet PC setup is important to you, it's worth considering other coolers with better noise profiles.

Summary:

NH-L9x65

The Noctua NH-L9x65 is a compact and efficient air cooler that's well-suited for small form factor builds and systems with limited space. Its low-profile design, adequate cooling performance, and quiet operation make it an attractive option for those looking for a space-saving and reliable cooling solution.

AG400 BK

The AG400 is an excellent choice to upgrade their CPU cooling solution. It has a sleek design with ARGB capabilities, helping create that look that sets you apart. However, this cooler isn't the most powerful cooling solution so it may not be best for all CPU's and it runs on the louder side. Overall, there is enough that sets this cooler apart that makes this cooler worth considering.