OCZ DDR2 PC2-4200 Value Pro
 

OCZ has geared their DDR2 Value Pro towards "mainstream desktop users". We had the DDR2 PC2-4200 Value Pro modules on our testbench and were surprised by how far we could overclock this memory. Close to DDR2-750 at stock voltage is certainly not mainstream. Timings could also be tightened from 4-4-4-8 to 3-3-2-4. Great results, especially if you consider the price of $120 for a 2x512MB kit.

Link:
http://www.techpowerup.com/reviews/OCZ/PC2-4200Value