If you want to get into VR games, you would need a good graphics card that can handle that job for you. The use of good quality GPU enhances the entire gaming experience special in the VR games. Here is the list of few graphics card that will give you a value for your money in conjunction with providing enhanced gaming experience.
1. NVIDIA GTX 1080ti
This is currently the best graphics card available in the market for VR gaming. It has 11 GB GDDR5X VRAM along with 3584 CUDA cores with each core clocked at 1481Mhz. But one of the limitations of this graphic card is that it is super expensive and it's reasonable also. If you want the best gaming experience then you will have spent some big bucks. It will give you the grunt to enhance visual fidelity by maxing out the in game option of most of the VR games. It also applies the higher level of supersampling to reduce aliasing in the VR.
2. AMD RADEON 530
This is also a great option for VR gamers. It is less expensive but provides the experience much similar to that of GTX 1080ti. It comes with 4 and 8 GB GDDR5 with a total of 2304 stream processor which has the base clock of 1257Mhz. AMD has been dedicated to providing best VR experience to the user with a dedicated VR API Collection Liquid VR. The price of these graphics card is also very reasonable and give complete value for money. RADEON 530 has better battery optimization compared to the previous versions.
3. NVIDIA GTX 1070
This graphic card is another beast from NVIDIA. It offers the similar experience of that AMD RADEON 530 (slight lower maybe) and probably gives more value for money that its big brother GTX 1080ti. This is best for those who can compromise a bit in their VR gaming experience. This one comes with 8GB of GDDR5 RAM and has 1920 CUDA cores with 6.5 Teraflops performance. This will allow you to exceed the minimum recommended spec that is laid by Oculus and Vive. NVIDIA has also matched AMD with their own suit of VR APIs for developers which have many unique features like lens matched shading and simultaneously multi-projection.
There are many more graphics card option available in the market but these three are the best. If you do not to compromise with the VR experience and ready to spend big amount, then you should go for GTX 1080ti. But, if you want a performance little similar to NVIDIA but do want to spend big amount then you should for READON 530. If you want to stick with NVIDIA but want a balanced performance, then you could try GTX 1070.