This section highlights the difference between the early Rx0 hardware and the later revision.
Quick Summary:
I haven't seen an early version of the Rx0LE so can't comment on that.
For those to whom it matters here is some detail from Linux's /proc/cpuinfo
vendor_id : AuthenticAMD cpu family : 15 model : 111 model name : AMD Sempron(TM) BGA processor 1.0GHz stepping : 2 flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow rep_good extd_apicid pni cx16 lahf_lm extapic cr8_legacy 3dnowprefetch vmmcall
Click on the photo for a larger version.
The motherboard is almost identical to the one fitted to the later Rx0L. The only obvious difference is that it is not tracked for a SATA port. This difference is shown below.