"To improve the specs" means to enhance or upgrade the specific details or specifications of something, such as its features, performance, or capabilities. Full definition
Yet the trend now sees consoles within the same «family» getting revamped releases with improved specs, allowing manufacturers to cater to their most demanding users. (theguardian.com)
On one hand, this is practically the same phone I've reviewed countless times, in a different shell, with slightly improved specs. (bgr.com)
The Honor 8 Pro offers improved specs and a sleek new look, but you'll have to be patient if you want to scoop one up. (tomsguide.com)