I wonder
How well something like HP's Advanced ECC or IBM's Chipkill which go well beyond basic ECC would hold up to this sort of attack. Myself I don't deploy any serious systems without this technology, as the systems tend to have dozens to hundreds of gigs of ram and ECC alone just doesn't cut it in my past experience anyway.
Last I looked I could not find good info on IBM's ChipKill but HP has good info here on Advanced ECC:
ftp://ftp.hp.com/pub/c-products/servers/options/c00256943.pdf
some text from the pdf
"To improve memory protection beyond standard ECC, HP introduced Advanced ECC technology in 1996. HP and most other server manufacturers continue to use this solution in industry-standard products. Advanced ECC can correct a multi-bit error that occurs within one DRAM chip; thus, it can correct a complete DRAM chip failure. In Advanced ECC with 4-bit (x4) memory devices, each chip contributes four bits of data to the data word. The four bits from each chip are distributed across four ECC devices (one bit per ECC device), so that an error in one chip could produce up to four separate single-bit errors.
Since each ECC device can correct single-bit errors, Advanced ECC can actually correct a multi-bit error that occurs within one DRAM chip. As a result, Advanced ECC provides device failure protection
Although Advanced ECC provides failure protection, it can reliably correct multi-bit errors only when they occur within a single DRAM chip."