I think they messed up when they put GDDR4 in the specs. Notice you don't see any other 3850's with GDDR4, only 3870's
I think the real specs on it are...
GPU clock 700MHz Memory (not shader) 875MHz stream processing units 320 Powered by ATI Radeon™ HD3850 Dual Link DVI-I x2 with full resolution HDCP Support 512MB Ultra High Speed GDDR3 Memory x16 PCI Express PCI Express® 2.0 & 1.0 support Superscalar unified shader architecture ATI Avivo™ HD display enhancement technology ATI PowerPlay™ energy conserving technology DirectX® 10.1 / Shader Model 4.1 support Dual DVI-I, TV/Component HDTV Built-in HDMI Video and 5.1 audio Support for the ATI Radeon™ DVI to HDMI adapter Unified Video Decoder (UVD) for Blu-ray™ and HD-DVD All info from: VisionTek Black Box HD3850 Review - Overclockers Club
Looks like the same card