Numerous people are saying this is not compatible with high profile ram. What is the clearance on this with the fans in proper orientation? What is considered 'high profile'? I have 4 sticks of Trident Z, for example. The Heatspreader on these are 37.3mm tall.

The cooler itself won't block the RAM, but the fans themselves will definitely block the Trident Z if applied before installing the RAM. I had the exact same ram for my system, I simply installed the RAM and placed the fans higher up the cooler so that the bottom of the fan rested on the top of the RAM. Cooling performance will be slightly affected, but not by a significant margin.

I'm planning on purchasing X399 Asus ROG Zenith Extreme motherboard w/ this cooler. However. I'm concerned this cooler may block the DIMM slots. I've already purchased Corsair Dominator Platinum. Will this cooler fit w/ the Corsair DIMMs on the Asus motherboard?

I had a problem with the fans blocking the closest DIMM slots on each side. Because the fans just clip onto the radiator, I had to move the fans up about 0.5". There's still plenty of air flow through the radiator, though. You'll need to attach the fans after you insert the RAM, but, as I said, it's an easy clip-on process.

Would G.Skill Aegis DDR4 2x8gb (f4-3000c16d-16gisb) fit on the ASROCK X399 Phantom Gaming 6 Motherboard using this cooler?

Hi Bonnie, yes and no. it will not perfectly fit with ram and fans. if you are only using the 2 sticks of ram then yes it will look the the picture. i have all 8 sticks of ram in mine and i had to slightly move my fans up so they are not touching the sticks of ram. but not by much. I have not seen any performance issues by not having the fans set like the picture.

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Noctua NH-U9 TR4-SP3, Premium CPU cooler for AMD sTRX4/TR4/SP3 (92mm, Brown)

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Model: NH-U9 TR4-SP3

NH-U9S
NH-U9 TR4-SP3

Award-winning NH-U9 series: more than 300 awards and recommendations from international hardware websites and magazines
92mm size for best case and PCIe compatibility (4U compliant)
Tailored custom version for AMD’s sTRX4/TR4/SP3 platform (Ryzen Threadripper / Epyc)
Two quiet, premium-grade NF-A9 92mm fans with PWM for automatic speed control
Renowned Noctua quality, deluxe choice for TR4 & sTRX4 AMD Ryzen Threadripper CPUs (e.g. 3990X, 2950X, 2920X, Epyc 7003/7002/7001 series)

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Having received more than 300 awards and recommendations from international hardware websites and magazines, Noctuas NH-U9 line has become a benchmark for compact 92mm single tower coolers. The TR4-SP3 version is a tailored custom model for AMDs sTRX4/TR4/SP3 platform (Ryzen Threadripper / Epyc) and features a larger contact surface as well as the latest SecuFirm2 mounting system for socket sTRX4/TR4/SP3. Topped off with two of the renowned quiet NF-A9 PWM 92mm fans in a push/pull dual fan configuration, Noctuas proven NT-H1 thermal compound and a full 6-year manufacturers warranty, the NH-U9 TR4-SP3 forms a highly compact, premium-quality solution that combines outstanding performance, superb acoustics and excellent compatibility for space-restricted sTRX4/TR4/SP3 systems.

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that the NH-U9 TR4-SP3 is a dedicated version for the AMD sTRX4/TR4/SP3 socket. Due to its customised larger base, it cannot be used on any other sockets and is incompatible with Noctuas standard mounting kits.

Model
Brand	Noctua
Model	Noctua NH-U9 TR4-SP3 premium-grade 92mm CPU cooler for AMD TR4/SP3

Details
Type	Fan & Heatsinks
Fan Size	92mm
CPU Socket Compatibility	AMD sWRX8 / sTRX4 / TR4 / SP3
Bearing Type	SSO2
RPM	Max. Rotational Speed (+/- 10%) 2000 RPM, Max. Rotational Speed with L.N.A. (+/- 10%) 1550 RPM, Min. Rotational Speed (PWM, +/-20%) 400 RPM
Air Flow	Max. Airflow 78,9 m³/h, Max. Airflow with L.N.A. 62,6 m³/h
Noise Level	Max. Acoustical Noise 22,8 dB(A), Max. Acoustical Noise with L.N.A. 16,3 dB(A)
Power Connector	PWM
Heatsink Material	Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Fan Mounting Types to Heatsink	Vertical

Dimensions & Weight
Max CPU Cooler Height	125 mm
Fan Dimensions	92mm x 92mm x 25mm
Heatsink Dimensions	125mm x 95mm x 71mm without fan, 125mm x 95mm x 120mm with fan
Weight	1.200g

Package Contents
Package Contents	2x NF-A9 PWM premium fan, 2x Low-Noise Adaptor (L.N.A.), Y-split cable, NT-H1 high-grade thermal compound, SecuFirm2™ mounting kit for TR4/SP3, Noctua metal case-badge

Additional Information
First Listed on Newegg	January 14, 2019

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Noctua NH-U9 TR4-SP3, Premium CPU cooler for AMD sTRX4/TR4/SP3 (92mm, Brown)

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Noctua NH-U9 TR4-SP3, Premium CPU cooler for AMD sTRX4/TR4/SP3 (92mm, Brown)

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