Gaming PC found online, looks good, but is it?

[edlanger100]

I've been looking online for gaming PC's and the ones that I find are not very good, I've found this one for around £600.

https://www.cyberpowersystem.co.uk/system/Infinity-X33-Gaming-PC
Extra Case Fans: Default Case Fan
Cyberpower Noise Reduction Technology: None
CPU (Processor): INTEL® Core™ i3-7100 Dual Core 3.90 GHz 4MB Cache LGA1151 + HD Graphics
CPU Freebies: None
CPU Cooling: INTEL Standard CPU Cooler
Coolant for Cyberpower Advance WaterCooling Kits: NONE
Motherboard: MSI H110M PRO-VD INTEL H110 Chipset, micro-ATX Mainboard w/ 2 RAM slots, 7.1 HD Audio, GbLAN, USB 3.1, SATA-III, 1x Gen2 PCIe x16, 2x PCIe x 1
Memory (RAM): 8GB (1x8GB) DDR4/2400mhz Dual Channel Memory (Adata XPG Z1 w/Heat Spreader)
Graphics Card (GPU): MSI GeForce® GTX 1050 Ti 4GB Video Card (Single Card)
Graphics Card Freebies: None
SLI BRIDGE: None
Virtual Reality Headsets: None
Streamer Gear/Video Capture: None
PSU (Power Supply): 350 Watts Power Supplies (Thermaltake 350watt Gaming Power Supply)
PSU Braided Cable: NONE
Hard Drive (HDD / SSHD / SSD): 1TB Seagate SATA-III 6.0Gb/s 7200RPM Hard Drive (Single Hard Drive)
Second Hard Drive (HDD / SSHD / SSD): NONE
Hard Drive Freebies: None
Hard Drive Cooler: None
External Storage: None
Optical Drive (BLU-Ray / DVD / DVD-RW): NONE
Second Optical Drive (BLU-Ray / DVD / DVD-RW): NONE
Wireless Networking: NONE
Wired Networking: ONBOARD 10/100/1000 GIGABIT LAN PORT -- As standard on all PCs
Sound Cards: HIGH DEFINITION ON-BOARD AUDIO

Could I do better for £600, if so could you suggest one for £400-£600, as I can't seem to find any actually good ones,
Thanks in advance
[Edit]
I have also found this PC:
Processor: AMD Athlon X4 845 3.5GHz (3.8GHz Turbo, 4 cores)
Graphics Card: AMD Radeon RX 560 2GB
Memory: 16GB of DDR3 Memory running at 1600MHz
Storage: 1TB Hard Drive
Power Supply: 650W
for £500
Is it better?

 

[volkgren]

You can build your own and get the same system for less. Pentium G4560 and i3-7100 are very, very similar in performance and the G4560 is the better value. Better motherboard. Better power supply. And you can even add a solid state drive if you want.
PCPartPicker part list / Price breakdown by merchant

CPU: Intel - Pentium G4560 3.5GHz Dual-Core Processor (£59.98 @ PC World Business)
Motherboard: Gigabyte - GA-B250M-DS3H Micro ATX LGA1151 Motherboard (£57.59 @ Aria PC)
Memory: Corsair - Vengeance LPX 8GB (2 x 4GB) DDR4-2400 Memory (£67.98 @ Ebuyer)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£37.79 @ Aria PC)
Video Card: Gigabyte - GeForce GTX 1050 Ti 4GB Windforce OC Video Card (£152.50 @ Aria PC)
Case: Corsair - Carbide SPEC-04 (Black/Gray) ATX Mid Tower Case (£47.98 @ AWD-IT)
Power Supply: Corsair - CXM (2015) 450W 80+ Bronze Certified Semi-Modular ATX Power Supply (£47.97 @ Box Limited)
Total: £471.79
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-12-28 21:47 GMT+0000

*Forget about that AMD Athlon X4 system. Its CPU is old and slow compared to either of these.

 

[WildCard999]

Higher end of your budget.

PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 3 1200 3.1GHz Quad-Core Processor (£88.99 @ Aria PC)
Motherboard: Gigabyte - GA-AB350M-Gaming 3 Micro ATX AM4 Motherboard (£77.72 @ Amazon UK)
Memory: G.Skill - Ripjaws 4 Series 8GB (2 x 4GB) DDR4-2800 Memory (£73.39 @ Amazon UK)
Storage: Crucial - MX300 275GB M.2-2280 Solid State Drive (£71.72 @ Amazon UK)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£37.79 @ Aria PC)
Video Card: Gigabyte - GeForce GTX 1050 Ti 4GB Windforce OC Video Card (£152.50 @ Aria PC)
Case: Corsair - Carbide SPEC-04 (Black/Gray) ATX Mid Tower Case (£47.98 @ AWD-IT)
Power Supply: Corsair - CXM (2015) 450W 80+ Bronze Certified Semi-Modular ATX Power Supply (£47.97 @ Box Limited)
Total: £598.06
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-12-28 21:59 GMT+0000

Or this for a bit more gaming performance.

PCPartPicker part list / Price breakdown by merchant

CPU: AMD - Ryzen 3 1200 3.1GHz Quad-Core Processor (£88.99 @ Aria PC)
Motherboard: Gigabyte - GA-AB350M-Gaming 3 Micro ATX AM4 Motherboard (£77.72 @ Amazon UK)
Memory: G.Skill - Ripjaws 4 Series 8GB (2 x 4GB) DDR4-2800 Memory (£73.39 @ Amazon UK)
Storage: Western Digital - Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£37.79 @ Aria PC)
Video Card: PNY - GeForce GTX 1060 6GB 6GB XLR8 Gaming OC Video Card (£228.49 @ Amazon UK)
Case: Corsair - Carbide SPEC-04 (Black/Gray) ATX Mid Tower Case (£47.98 @ AWD-IT)
Power Supply: Corsair - CXM (2015) 450W 80+ Bronze Certified Semi-Modular ATX Power Supply (£47.97 @ Box Limited)
Total: £602.33
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2017-12-28 22:00 GMT+0000

As for building it there are plenty of guides online.
http://www.tomshardware.com/forum/274745-31-step-step-guide-building

For the OS use Windows 10 for free (skip key during installation) for now until you can afford a license.
https://www.microsoft.com/en-us/software-download/windows10