No sh!t, DRAM to the rescue!
Wow, once again we find out that massive DRAM caches speed things up. Who would have thought?
These days a 60MHz 32bit processor is smaller than your thumbnail, costs $5, and people are still amazed that massive DRAM caches improve I/O. Back when IDE drives had just been introduced, I bought a smart controller and populated it with 16Mb of cache. Wow, builds could fly! And when I shutdown the system, the writes continued for a minute. Same thing here, different day, same premise.