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This review is from: Noctua NH-U12DO A3 for AMD Opteron workstations and Servers CPU Cooler
Pros: The fans run very quietly with this. If you end up hooking it up to a source that doesn't offer PWM speed control, there are some connectors with in-line resistors that will lower the speed of the fan so you can run it more quietly.
I chose Noctua because of the great things I've read about them in computer magazines and also from using them in a build I did for my brother. I was impressed with how cool and quiet his air-cooled system was, so I decided to use Noctua for my server upgrade.
Everything is included, such as heatsink thermal compound, hex wrench, C32 and G34 brackets.
Cons: Too tall for a 4U case. Removing the fans from the heatsink can be difficult, as I've had to do in order to return it.
Other Thoughts: Newegg lists this item as being smaller with the fan attached than without the fan, which I found out is not true. Also, Newegg lists its dimensions (With Fan: 6.1" x 4.96" x 2.56") out of order. Normally, dimensions are LxWXH but the height is actually over 6.2" according to Noctua's site. The heatsink/fan work great and Newegg's problem with dimensions is no fault of the product so I will not knock the rating down. However, keep in mind that this fan is just a bit too tall to fit into a 4U case. I was able to get it to fit with the lid sitting on the heatsink, but couldn't close it. Ended up returning it for the NH-U9DO.
Also, ensure that your motherboard is compatible with 3-pin fans. My motherboard, the ASUS KCMA-D8 requires a jumper setting to be changed to use 3-pin fans.
This review is from: Noctua NH-U9DO A3 AMD Opteron, 4 Dual Heat-pipe SSO Bearing Quiet CPU Cooler
Pros: The size of this heatsink/fan makes it ideal for a 4U server. I'm using this on an Opteron 4386 in a ASUS KCMA-D8 motherboard and it is the right size for it. It is also really quiet, especially compared to the louder case fans that came with my server case.
Very simple to install as well. Comes with everything you need, such as wrench and thermal paste.
Cons: When using the L-shaped hex wrench vertically, the handle is really small and uncomfortable to turn. I ended up holding the wrench with some vice grips and this made it a lot easier.
Other Thoughts: I read some of the bad reviews about getting the screws in for the brackets and can possibly see where that might be difficult to get started if you have larger fingers. I'd say I have average to slender fingers and had no problems with the 4 screws that attach the brackets to the heatsink.
On an 8 core Opteron 4386, I'm averaging about 104 degrees F with light loads (running 5 virtual machines).
This review is from: Antec High Current Pro HCP-1200 1200W ATX12V / EPS12V SLI Ready 80 PLUS GOLD Certified Yes, High Current Hybrid Cable Management Active PFC Power Supply - Intel Haswell Fully Compatible
Pros: I wanted to wait some time until I wrote a review so that I can be sure it would last for a while. After having this for more than a year, it's still working strong. I have 6 hard drives (a couple of Caviar Blacks and Velociraptors which can be power hungry), Radeon 5970 dual GPU video card, Core i7 980x overclocked, water cooling pump and a few fans and it's been running just fine, even when the weather gets hot in the summer.
Cons: I'm finding that with newer SATA drives, I need fewer molex connectors and need more SATA power connectors. That's the only complaint I have.
Other Thoughts: Overall, this power supply has been quiet and reliable. I have had to fix various electronic devices and over 90% of the time, the component that fails are the capacitors, specifically electrolytic capacitors. One of the selling points of this power supply is the use of Japanese sealed capacitors, which was attractive to me. I guess time will tell if these will hold up better.READ FULL REVIEW