i just noticed my ssd write speed is low when i did a speed test in crystaldiskmark .... The company promised write speed is 450MB/S yeah i got it at first but after 2-3 months of usage my write speed went down to 200MB/S sometimes even as low as 170MB/S.... i searched online and followed some tips but nothing changed ... Guys please help me what should i do ? My ssd is 41% filled , trim is enabled , write caching is enabled even though i get less write speeds... i am using ADATA SU650 120GB SSD