P400

I currently have a Dell OptiPlex 960 and want to change GPUs to run a 32" 4K display and also so I can use three/four monitors if I want. The Dell currently has a AMD Radeon HD 6570. I want to install a NVIDIA Quadro P400. Would that be a good swap? The P400 costs £92.40 on Amazon UK. Is it...

Yesterday I started building my first pc build. The specs are 1 x GIGABYTE GA-B250M-DS3H (rev. 1.0) LGA 1151 Intel B250 HDMI SATA 6Gb/s USB 3.1 Micro ATX Intel Motherboard 1 x Intel Pentium G4560 Kaby Lake Dual-Core 3.5 GHz LGA 1151 54W BX80677G4560 Desktop Processor Intel HD Graphics ... 1...

The internet on my desktop using the WiFi is very slow. It works perfectly fine using an Ethernet cable, and the internet is fine on my other devices (laptop, other desktop, Ps4, phone, etc). I have ran a speed test on all my devices and the speed I am getting on my desktop is 0.5 mps to 3.0...