Does Volatile.Read/Volatile.Write for a "double" atom?

MSDN declares that

long, ulong, double and decimal, as well as custom types are not guaranteed as atomic 5.5. Atomicity of variable references

Will it Volatile.Write Method (Double%, Double)work like an atomic operation? If so, how is this guaranteed?

Is it possible to do Volatile.Write(ref mydouble, value);in one thread and Volatile.Read(ref mydouble)in another where type mydoublehas double?

That was a general question. Another question: what should I do in this particular situation:

• 2 xeon x64 server processors
• Windows + MS.NET 4.5
• read / write double from different streams
• SMALLEST latency (requires the least because I write HFT software)