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This review is from: CORSAIR Hydro Series H90 High Performance Water/Liquid CPU Cooler. 140mm
Pros: A MUCH quieter pump compared to the competition. Nearly silent during normal operation. To me personally, this trumped the few degree advantage the competitor has on this unit..
Cons: Flimsy PLASTIC "backplate", and I use the term loosely here because it's so soft. The retainer nuts spun right around in it and I don't trust that it will hold during transport. Very little feedback when tightening the screws on the block due to all the plastic used. More pieces and a more difficult install than the 140XL. Only one fan and one set of hardware so customer on their own if they want push-pull. Doesn't appear that a matching fan is readily available.
Other Thoughts: Having installed both this and the 140XL in the last few days I can say that you get a lot more for your money with the competition in terms of actual hardware, performance, and "feel". The reason I had to switch to this was because the pump on the other unit made a high-pitched whine that caused ringing in my ears.
The H90 appears to be the "black sheep" in Corsair's line-up. It does not even show up on their web-page with their other liquid AIO cooling solutions. I think the popularity of this form-factor will be increasing due to increased case support and superior cooling of a larger radiator, and the quieter 140mm fans. Corsairs really needs to up their game if they want this unit to stay competitive. At a minimum provide 2 matched fans and a real metal backplate.
When installing, I would suggest just using your fingers instead of a screwdriver like Linus does in the accompanying video or you will end up rotating the nuts within the plastic back-plate.
Pros: Cooling of this unit is highly rated, which is why I purchased it. Flexible mounting options. Thick radiator and hoses. Tech support responded to my initial set of install questions within 24 hours, which I was impressed with.
Cons: Install instructions could use some work. Diagrams are good to a point but undoubtedly customers will have questions, like which orientations are OK, how much torque should be applied to the fasteners, etc.? The biggest, by far, con for me is that the pump exhibits a very high-pitched whine which is driving me crazy. I can hear it even if the fans are running at full speed. Definitely not acceptable. I'm also worried that if the pump should ever fail it will fry the processor since there is no alarm or automatic shutdown option in my BIOS for this contingency.
Fan speed tuning is a must as the fans, at full speed, are way too loud. I noticed that running them in the comfortable range provides good cooling though so it shouldn't be an issue as long as you have the option to generate a fan-curve in BIOS.
Other Thoughts: Instructions do not mention that 4 of the long bolts are longer than the rest and therefore make mounting the push-pull configuration setup inside a case easier. It would be nice if there was something that held the backplate in place while trying to attach the cooling block.
I opened a support ticket for the pump noise issue but fear that this will be an RMA. Not sure if I will chance it again and go for a replacement or just go for a different unit altogether.
Pros: Had this memory for about a week in an ASRock Z97 Extreme6 board and an 4790k processor. So far it has been running without problems at the rated speed. I have not attempted to, nor do I plan to, try overclocking it. I have run a bunch of burn-in utilities which I always try to set for maximum memory usage and it's been holding up fine.
Other Thoughts: These memory prices need to come down! Memory speed makes very little difference in gaming and most application for that matter.READ FULL REVIEW