Said to compete with AMD's Radeon R7 370 and provide customers with a relevant upgrade from their NVIDIA GTX 750 Ti's, specifications for the GTX 950 have come to light recently, or at least rumors have.
Based on GM206 silicon (as seen in the GTX 960), we are told to expect 768 CUDA cores, a TMU count of 48 a ROP count of 32, a memory bus of 128-bit, wrapped up in 2GB of GDDR5 memory. Paired with this is a rumored clock speed of 1150 to 1250 MHz, a 1350 - 1450 MHz boost and 6.60 - 6.75 GHz memory.
Powered by a singular 8-pin connection direct from your power supply, this card may draw only 90W. Further said to support 2-way SLI for those looking at a little extra grunt, display options may include dual-link DVI, HDMI 2.0 and DisplayPort 1.2.