wd black

Hi All, Want to sell as under 1. Model number and details: WD4005FZBX 2. Date of purchase: sept 3. Reason for sale: Extra 4. Warranty details: Till March 2025 5. *Expected Price: 12000.00 each 6. *Location of Seller: Coimbatore 7. *Pictures along with your User ID + date written on a piece...

I recently assembled my new computer, here is the config-- AMD FX8350 Sapphire 7770 HD DDR5 1GB GIGABYTE DS3 KINGSTON HYPER-X 8GB Corsair 650W Corsair GAMEMAX 9602A The problem is with 1TB WD Black. I am only getting around 18-20mBps write speeds with Tera Copy. Please help.