This ad mentions the model of the server as " IBM x3850-[88633SM]- ". However, in my searches I was unable to find any meaningful reference to the specific server. The closest I could find is this reference, that I do not believe to be the same model.
The ad also says that the server has 6 NIC cards but, as stated earlier, I couldn't find a picture or any other information, particularly regarding the rack unit of the server.
Can anyone please throw some light on what model that is
This appears to be a System x3850 Type 8863 system. I found a System x3850 Type 8863 Installation Guide which provides some diagrams and indicates (page 16) that the Xeon processors have 1 MiB of L2 cache and 667 MHz front-side bus and the system uses DDR2 memory. This seems to indicate a Nocona-based Xeon, the first 64-bit Xeon, released in 2004.
The size is indicated (also page 16) to be 3U, weight: "approximately 38.5 kg (85 lb) when fully configured or 31.75 kg (70 lb) minimum".
This system is only four sockets, but the seller might be counting the virtual processors as CPUs (Nocona-based Xeon had two-way multithreading, a.k.a. hyperthreading).
I have not found anything indicating what the "3SM" means, but this page at IBM related to a newer model has a small table that shows -?SG (with ? being 1, 2, 3, or 4) used for different processor bins (different frequency, cache size, or the like), so presumably 3SM refers to such details.
