Hello Oleg The supported DIMM sizes are 256, 512, 1GB, and 2GB. We did not validate any other DIMM sizes for the server. Other sizes may work in the server, but these are the sizes we have tested to work with the server. Thanks
Thanks for all for answer about PowerEdge SC1430 and processors. ([URL]#20173031) What memory module support this server? The specification describes that support no more 8Gb total and 2Gb module. But in shops I seen 4 Gb modules for this server. 
PowerEdge SC1430 and memory 