The Witcher 3 system requirements :

Minimum
Processor: Intel Core i5-2500K 3.3 GHz or AMD Phenom II X4 940
Graphics: Nvidia GeForce GTX 660 or AMD Radeon HD 7870
RAM: 6 GB
OS: 64-bit Windows 7, 8 or 8.1
DirectX 11
HDD Space: 40 GB

Recommended
Processor: Intel Core i7-3770 3.4 GHz or AMD FX-8350 4 GHz
Graphics: Nvidia GeForce GTX 770 or AMD Radeon R9 290
RAM: 8 GB
OS: 64-bit Windows 7, 8 or 8.1
DirectX 11
HDD Space: 40 GB

The Witcher 3 RELEASE DATE May 19, 2015

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GTA 5 system requirements :

MINIMUM

CPU:	Intel Core 2 Duo 1.8GHz, AMD Athlon X2 64 2.4GHz

CPU Speed:	1.8 GHz

RAM:	1 GB for Windows XP / 1.5 GB for Windows Vista)

OS:	Windows Vista - Service Pack 1 / XP - Service Pack 3 / Windows 7

Video Card:	256MB NVIDIA 7900+ / 256MB ATI X1900+

Sound Card:	Yes

Free Disk Space:	16 GB

Reccomented

CPU:	Intel Core 2 Quad 2.4GHz, AMD Phenom X3 2.1GHz

CPU Speed:	2.4 GHz

RAM:	2 GB (Windows XP) 2.5 GB (Windows Vista)

OS:	Windows Vista - Service Pack 1 / XP - Service Pack 3 / Windows 7

Video Card:	512MB NVIDIA 8600+ / 512MB ATI 3870+

Sound Card:	Yes

Free Disk Space:	18 GB

 

so this is all main info about TW3 and GTA5 so thanks to watching, copying and writing of this takes me 20 minutes :) BB have a nice day !