I just ordered a Thinkstation S20 with Xeon W3503 CPU and Intel X58 chipset.
There are different maximum RAM values listed for this machine type (4157), 12 GB and 24 GB (Some list 12GB, Lenovo 24GB) depending on which doccuments are consulted. Which is correct?
The S20 support 6 DIMMs. In some older materials you can find 12GB listed because 4GB memory modules had not been certified yet. Now you can buy 4GB memory modules and therefore max memory is correctly noted as 24GB.