Full Details from Amazon.com : http://www.amazon.com/gp/product/B005LU2YZI?tag=onigi-20
Zotac NVIDIA GeForce 8400 GS 256MB GDDR3 PCIe 2.0 x16 Video Card ZT-84GED2M-HSL
Core Clock Speed 567MHz
RAMDAC Clock Speed 400MHz
Shader Clock 1400MHz
Video Memory 512MB
Memory Type DDR3
Memory Bandwidth 64GBsec
