Good day I currently have been debating if buying a NF-A12x15 and putting it under the case would make my overall temps better. My gpu is the Gigabyte 2070 Super Gaming OC and Cpu is the 2600x. Is it worth spending or just leave it with no fans under? Also is the NF-A9 better than the NF-B9 redux my cooler is the U9s. Also thinking of ditching the redux ang B9 redux for another A9. Thanks for the time and have a great day ahead!