Table:
text: Comparison of Nvidia chipsets
nForce Professional
nForce Professional
Model Processors_Supported FSB_HT_Frequency_MHz Memory PCI_Express SATA PATA Sound Network Features
nForce3 Professional 150/250 AMD Opteron HT 1.0 1.6 GHz DDR 266/333/400 Registered/ECC N/A 4 4 Enhanced AC`97 2.1 GbE: 1 connections MediaShield
nForce Professional 2200 MCP AMD Opteron HT 1.0 1.6 GHz DDR 266/333/400 Registered/ECC 20 lanes, 4 links flexible x16: 2 slots 4 4 Enhanced AC`97 2.3 GbE: 1 connections MediaShield
nForce Professional 2200 MCP and 2050 AMD Opteron HT 1.0 1.6 GHz DDR 266/333/400 Registered/ECC 40 lanes, 8 links flexible x16: 2 slots 8 4 Enhanced AC`97 2.3 GbE: 2 connections MediaShield

Question: Which nForce Professional PCI-Express has DDR 266/333/400 Registered/ECC memory and improved AC'97 2.3 sound compared to Nvidia chipsets?