Pros: This is a great fan. Get the proper heat compound on it and full load will run at idle temps of the stock cooler.
Cons: Xigmatek commits fraud with their rebates on a huge scale. I took a risk with one even though many complained about their rebates never being fulfilled, and I did not get my money back. At least it was worth the full price, but, I should have gotten $25 back.
Summary: Xigmatek got this one right. Beat's out even it's own Xigmatek products for MUCH LESS money. The biggest CON with this cooler today is you can't get them now. I'm hoping they are not discontinued that would be a shame considering it performs better than 90% of all other coolers out there.
Pros: This thing is so simple to install and works great. If you are familiar with general motherboard layout for cpu retention you will know which hardware to use with intel and which hardware to use with AMD. Backing plates are way different so it's obvious. This cooler keeps my 2500k @ 4.3Ghz under 30* idle and low 50*'s @ 100% load on OCCT. Playing BF3 for hours it doesn't go over 45*. It's silent too. I run it 100% speed 24/7 and cannot hear the fan. You can use a seco...
Cons: The retention is not super tight, this isn't really a con though as it does work as is AND it will not stress your motherboard.
Summary: Securing the heatsink to the bracket you install was difficult because my motherboard has a VREG heatsink that stands about 2.5" tall off the motherboard. Had to stick the nut on a thin screwdriver with electrical tape and do a balancing act to get it screw'ed on. Once you get passed this, it fits perfectly even with two fans installed.
Pros: -Excellent value, bought during Black Friday sale with $25 rebate
Cons: Had to remove my EVGA x58 SLi motherboard to install, but that's more the fault of my case NZXT Phantom. Took some additional time but I don't care.
Summary: Solution for me was to use the next slot over (using B slots instead of A slots) since I am using only two memory modules. This is on a ASrock Z68 Pro3 board with the cooler oriented so the push fan is near the memory modules so the hot air will exhaust out the rear of the case.
Pros: Large cooler with plenty of cooling area. At 159mm tall, case side clearance could be an issue. I have a Coolermaster HAF 922 and it clears fine even with a fan installed in the side panel.
Cons: I did have an issue with clearance between the Gaia fan and memory. My G.skill Ripjaws (large heat sinks) memory module touched the Gaia fan when installed into the first memory slot closest to the CPU.