Which cooler to choose for AMD FX-8350?

Question

Processors

Hello. Recently, my percent began to give me whims, throttling kicks in after an hour of playing a new GTA, the temperature reached 89! Everything works at factory frequencies, I didn’t drive anything, I turned off the energy-saving functions in the BIOS, set the speed of the hull and percent. cooler for max.
Previously, this was also observed, but before cleaning from dust and replacing thermal paste (about three months have passed since the last such procedure). At idle, the temperature is 20-30 degrees. Now I keep the computer with the side panels open. I need advice on replacing the cooling, and specifically - replacing the cooler in the processor + put another cooler in the case to replace the one that is available. Now there is a stock cooler on the processor, and some unremarkable cabinet cooler.
My build:
Motherboard: Asus M5A99X Evo R2.0 (sAM3+, AMD 990X/SB950)
CPU: AMD FX-8350 4GHz/5200MHz/8MB
GPU: MSI Radeon HD 7970 3GB Twin Frozr OC Boost Edition 384-bit GDDR5
Memory: GeIL DDR3-1866 16384MB PC3-14900 (2x8192)
SSD: Plextor 128GB 2.5" SATAIII MLC (PX-128M5S)
HDD: Hitachi (HGST) Deskstar 7K1000. With 1TB 7200rpm 32MB
Power Supply: Chieftec CTG-750C
Case: Aerocool PGS VS-92 White Edition

Answer 1

Take the tower from Noctua or Scythe.

Answer 2

Or Zalman, like CNPS9900-NT (it worked fine for me with 8120 overclocked).
And close the box! There must be air circulation inside so that it is constantly updated, for this you need to close the case, if necessary, put several additional 140mm or 120mm coolers, depending on what there is space for.