In {HEAD ~ one embodiment}, {TAIL ~ a self refresh rate} of a DRAM is adjusted based on the SPID of that device 
In { HEAD ~ one embodiment } , { TAIL ~ a self refresh rate } of a DRAM is adjusted based on the SPID of that device
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH