Dual channel problem. Identical RAM showing different timings?

[deeyo]

I've been out of computer-building for a long time, so this might be a really dumb question.

I just ordered a duplicate RAM for a small desktop system to double the RAM for dual channel. Old one was in DIMM1 and I put the new one in DIMM2.

However, POST and CPUZ both show that it's still single-channel.

In the SPD tab of CPUZ i get different information on the timings for both DIMMs (see pictures)
http://img14.imageshack.us/img14/7/capture2bx.jpg
http://img6.imageshack.us/img6/5005/capture3wl.jpg
http://img12.imageshack.us/img12/4904/capture1hq.jpg

The only thing i can think of is that it's been a year or two since purchasing the first stick of RAM, but all the numbers match up on the stickers.
Am I missing something?

Sapphire PE-AM2RS690MH
G.Skill 2x1GB PC6400

Thanks

 

[Denithor]

Typically you have to put the memory into offset sockets - 1&3 or 2&4 - to enable dual-channel mode.

The sockets are usually color-coded to indicate the pairs that support dual-channel.

 

[deeyo]

yeah, i guess i can try that, but the manual and color coding say otherwise.

 

[tomt4535]

You have them in the right slots according to the manual. I would try manually setting the timings in the bios. The SPD settings for both sticks have different timings on some of the #s. Set them all manually so they will be forced to match up and see if that makes them go into dual channel.

 

[Binky]

You bought two sticks, each at different times. They are slightly different, regardless of what the sticker says. Try for a return before it's too late, and grab a dual channel kit (or two individual sticks bought at the same time).