This PNY graphics card might be a good choice if you're building a gaming PC. The memory of the card amounts to 4 GB and is of the GDDR5 type.
Overclockers
PNY Nvidia Quadro P1000 Graphics Card - 4GB GDDR5 - 640 CUDA Core
Athema Services
nvidia quadro p1000 - graphics card - quadro p1000 - 4 gb gddr5 - pcie