Pros: Card worked on first installation onto a Win 8.1/64 system with four 24" monitors. Two monitors are Samsung (same model) and the other two are Asus (also same model). The drivers installed without a hitch. Since I use the system for C# code development and audio mixing, the card is not highly taxed. I also was happy to find that the issues that I seem to often have with ATI software simply was not present with nVIDIA / PNY. Plugged it in and it worked...so nice.
Summary: I needed a second quad monitor card for another computer and looked at the NVS 420 I've used in other computers. The 420 has been discontinued. The 510 is significantly faster, slightly less expensive, and easier to install and connect. The 510 uses 4 mini display port connectors rather than the VHDCI connector on the older card. Mini display ports just seem a heck of a lot easier to connect.
Summary: One of the eight cables was defective and I had to go to another local store to purchase another cable. Good product and easy install. Installed two boards for trading with eight screens. I called Customer Service and they were very helpful in providing a credit so I could order another cable to replace the defective cable. What great customer service. Amazon is a great company and they provide great customer service.
Summary: Was shopping around for an work graphics card. Had some questions, and thanks for the great customer service from PNY, I am going to buy from ATI and will probably stay away from any PNY product from now on.
Summary: This was delivered in a timely manner and worked flawlessly. I needed a multi monitor card that could support multiple 1440p displays. This card is exactly what I needed. I don't game, and the specs on this card don't look good for gaming, but for work, not design or artistic work, but document processing and many windows requiring much real estate, this is great. I also ordered the minidisplayport to display port cables and they worked perfectly.
Summary: Works well for display port or DVI connections but if you need to connect to a H MDI connector through an adapter particularly the Seiki 4K unit it would not work with PNY Quadro NVS 510 Graphic Card. The software is very tricky to do a custom install as the cards not able to recognize this monitored through the adapter You got a check two boxes to try to make custom settings, but that not clear form the screen.