I built a machine about 5 years ago based on the ASUS Sabertooth 990fx motherboard AMD 8350fx processor and 8 gb hddr3 memory and radon sapphire HD 5450 GPU. Looking to modernize on a relative budget without doing a new build, looking for advice on if upgrading ram or GPU compatible with this motherboard would be worth it as well as component advice if I were to upgrade. Looking to spend under $400 on any upgrade.