TigerDirect offers the Corsair 8GB Vengeance PC3-15000 DDR3-1866 240-Pin SDRAM Desktop Memory Kit
, with two 4GB DIMMs, model no. CMZ8GX3M2A1866C9, for $54.99
with free shipping
. That's the lowest total price we could find by $8 and the least expensive PC3-15000 8GB RAM kit we've seen without rebate hassles. This dual-channel memory kit features 9-9-9-24 timings.