How much space will a w7 Home prem. 64bit with all updates need.

Computer Type: PC/Desktop
System Manufacturer/Model Number: Home made Desktop
OS: Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
CPU: Intel i7-6800K @ 4.3
Motherboard: ASUS X-99 Deluxe II
Memory: Corsair Platinum 16 gig @2400
Graphics Card: EVGA GTX 1070 OC
Monitor(s) Displays: Asus 27" LED LCD/VE278Q
Screen Resolution: 1920-1080 or 1280-720 HDMI
Keyboard: Das 4 Professional
Mouse: Logitech M705/MX Anywhere 2-S
PSU: EVGA Platium 1200W
Case: Phanteks Luxe Tempered Glass 8 fans/ one radiator
Cooling: XSPC/ Water Cooled CPU
Hard Drives: INTEL SSD 730-240 Gb Sata 3.0/
Internet Speed: 100 mbits
Browser: I.E. 11 default/Firefox/ ISP Time Warner Cable/Spectrum
Antivirus: Microsoft Security Essentials/ Malwarebytes Premium 3.0/ SAS
Other Info: LG BluRay Burner/ Sound system-KLipsch-THX/ Icy Dock ssd Hot Swap bays.

Computer Type: PC/Desktop
System Manufacturer/Model Number: custom built
OS: Win 7 Pro 64-bit 7601
CPU: AMD Phenom 9650 QuadCore, revision DR-B3
Motherboard: ASUS M4A78
Memory: 5 GB yes I run 2x 2GB and 1x 1GB, different brand, spank me.
Graphics Card: NVIDIA GeForce 9800 GT 512 Mb, unknown manufacturer.
Sound Card: Crappy Realtek Integrated Audio
Monitor(s) Displays: Fujitsu Siemens P19-3P
Screen Resolution: 1280 x 1024 x 32 bits @ 60 Hz Oh yeah, 4:3 rocks!
Keyboard: Microsoft, PS/2, white.
Mouse: Optical, logitec.
PSU: whatever, around 450w
Case: Scavenged from old company PC, 10+ years old
Cooling: CPU fan, GPU fan, case fan, nothing fancy
Hard Drives: (1) MAXTOR S TM3320613AS SATA Disk Device (2) STM35004 18AS SATA Disk Device (3) TOSHIBA USB 2.5"-HDD
Internet Speed: effective max speeds: 70-ish kB/s down 30-ish kB/s up
Browser: Firefox with FXChrome to make it look like Google Chrome :P
Antivirus: Avira, free edition.
Other Info: Was discarded by previous owner due to "horrible performance". Was running Win Xp from a IDE drive. Yeah. Was a pain. SATA II drive and Win7 and it zips away! Yay!