Memory Issues

drklazarus26 said:

Well so far so good. I've left my machine on and havent been in front of it 24/7 but doesnt look like its crashed so hopefully im all fixed up. i really appreciate all the help guys. i hope i can help someone else out the way you all help me. thx alot

You're welcome Eric. I'm happy to hear that it seems to be sorted. :)

It seems that these are not the same sticks of RAM. You have two different kits: one 667MHz (ddr3 1600) and one 533MHz (ddr3 1066). I mean they're not even close in terms of the jedec timing tables.

533MHz:
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 5.0-5-5-12-19 @ 380 MHz
JEDEC #2 6.0-6-6-14-23 @ 457 MHz
JEDEC #3 7.0-7-7-16-27 @ 533 MHz
JEDEC #4 8.0-8-8-19-31 @ 609 MHz

667MHz:
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 5.0-5-5-15-20 @ 476 MHz
JEDEC #2 6.0-6-6-18-24 @ 571 MHz
JEDEC #3 7.0-7-7-20-28 @ 666 MHz
JEDEC #4 8.0-8-8-23-32 @ 761 MHz
JEDEC #5 9.0-9-9-26-36 @ 857 MHz

It's odd that the jedec 2 timing table does not show 533MHz settings.

Ideally, you'd like to be able to RMA the new kit and this time make sure you get one that's the same as the old kit. However, if that's not possible, what you'll need to do is run your RAM at 533MHz (1066).

Try out 7-7-7-16-25 @ 1.5 volts. Your newer kit (667MHz), at least on the OCZ website, says that these sticks run at 1.65 volts. Let's hope that by running them at the much lower speed of 533MHz that they'll play nice?

Thats what was so confusing. I ordered the same exact ram. I actually went to the invoice and click the link for the previous ram i purchase. the numbers on the ram are identical. also if i run the sticks separately they run correctly but together they run like differently. I also forgot to mention that i had to change the settings in order for w7 not to crash every 5 mins. This is the ram i ordered. http://www.tigerdirect.com/applicati...?Sku=O261-9062

Depends on what you want to do?

For future reference, unless you buy all your RAM at the same time you'll never be able to guarantee that they'll be identical; in fact, because memory vendors constantly change their memory's SPD chips, it's pretty much a given that they will not be identical.

As to why you have what appears to be two entirely different kits? The link you gave led me to an unavailable item. Perhaps Tiger Direct ran out (or discontinued it) and just filled the order with the next best thing. Afterall, memory is rated, not set at any certain speed.

Unfortunately, timings and voltages don't seem to be matching up too well...

Since going low didn't work out, you might want to try and go high? Instead of running at 1066 or 1333, try running your RAM at your new kit's speed and voltage. Of course, you're going to have to relax your timings to accommodate your old kit.

If that doesn't work out then I don't know... RMA it and at least get your money back.