josh2thad

I have 4 GB of ADATA Pc 6400 800 MHZ ram @ 1.8V On the stock voltage i can get it to do 5-5-5-15. Anyone know what votlage to get it @ 4-4-4-12 or 4-3-4-10

heres a link to the product. normally this stuff runs at 5-5-5-18
Newegg.com - A-DATA 4GB(2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail

Now heres the product released just after it. Im guessing its the SAME thing with the voltage just upped to 2.0V-2.1V

Newegg.com - A-DATA Extreme Edition 2GB (2 x 1GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory - Retail

Let me know what you guys think. You've always helped me in the past. I think im on to something here.

PangingJr

you will not gain much from using 800MHz @ CAS4 (at that speed CAS3 will see the difference. DDR2 1110-1200MHz @ CAS4 would be a big different comparison to CAS5)
but if you insist to use it, with your module running at DDR2 800MHz try starting with 2.1V for 4-4-4-x, and run memtest86+ 1.7 on the test #5 for 20 passes or so (each time)
if no error occur, low the DDR2 voltage to 2.0V, 1.95V, 1.9V.... if at 1.9V you still don't get any error, then boot into Windows, and run another test with Orthos in mode blend for a few hours... if you get an error, go back into your BIOS, and then try testing with 2.0V...
you may also what to try CAS5-4-4-12/15/18, or 5-5-4-12/15/18 @ 1.9V-2.0V

once you get the timings and voltage you want to use... clear CMOS once and begin to use the new settings.
if you want to go back to use the old settings, or before using a new settings, then clear CMOS again.
if you find any error when memtesting, and you are not sure... then clear CMOS first and then try running the test with the DRAM settings again.

and, depending on your BIOS options, motherboard's chipset configuration and the memory module itself, but, sometimes, you may find that all the number gains, are coming from adjusting the additional memory sub-timing/options in the system BIOS. if you want the best optimized for the memory subsystem you may have to get into this settings as well.