970 extreme 4 + 32GB RAM dual channel

China-Sourcing wrote: Hi sorry for the delay I was away on business. The 2 sticks that came with the computer I have attached pics. the other 2 sticks didn't come as a pair from newegg I just bought two of the same sticks. They are in my computer now. I've used combinations of both and haven't had a problem (1,4)(1,3)(2,3)(3,4) etc My understanding was that if the sticks have the same timings and voltage and were the same model, they could be run in dual-channel and you could buy them individually?  2 old sticks

Memory is sold in matched sets for a reason. Mixing random samples of the same model of memory together may or may not work.

wardog asked you to post a picture of all four DIMMs, although we know the two new DIMMs you bought were sold individually, so we know they are not a matched set.

The two original DIMMs in your picture are also not from a matched set. If they were, the serial numbers would be sequential, but they aren't. The last four digits of the serial number are not sequential.

But of more significance is the date on the two original DIMMs, 2012. G.SKILL does not manufacture their own memory chips, they buy them from various sources. We don't know what the dates are on the two new DIMMs you purchased, but I doubt they are from 2012. Assuming a date of say 2015 - 2016, at least three years newer, the chances are the memory chips in the new memory are different than the original memory. Mixing memory with different chips is usually when problems are encountered.

In this situation, it is very difficult to determine if the board is the problem or not. The memory controller is part of the CPU, so the board does not play as great a role in memory compatibility as it has in the past.

Your best chance of using all this memory together is to put the original memory in one channel, and the new memory in the other channel. Since you are using four DIMMs, you should try increasing the DRAM voltage a bit.

bump,

Can you post a pic of the stickers on all 4 sticks?

So, in pairs, as they came 2 with the computer as one pair, and the other two you bought, play nice when paired with it's twin/sibling? But not cross populating using one old and one new?

China-Sourcing wrote: 32GB of F3-1066CL9S-8GBXL G.skill 4x8GB @ 1333 <snip> long story short I had the above rig with 2x8GB of the above ram. Ran fine no problems. I then bought 2 more for a total of 32GB.

Using ONLY your two new sticks, will it run and test/bench ok?