Can I use Rank 1 and Rank 2 Ram simultaneously ?

[Figure8]

I recently bought 4 GB Ram (kingston) which is rank 2 and I am currently using 4 GB ram (kingston) which is rank 1, so my concern is if I can use rank 1 and rank 2 simultaneously without expecting any problems in future?

 

P.s. :- Both Rams have same Frequency, Lantency and Voltage of different models.

Your answers would be appreciated. Thank you !

[chiller15]

I've never heard the expression of different ranks in regards to RAM before. However I do know that you can use different sticks together, as well as different frequencies, capacities and latencies.

[.Apex.]

3 minutes ago, Figure8101 said:

I recently bought 4 GB Ram (kingston) which is rank 2 and I am currently using 4 GB ram (kingston) which is rank 1, so my concern is if I can use rank 1 and rank 2 simultaneously without expecting any problems in future?

 

P.s. :- Both Rams have same Frequency, Lantency and Voltage of different models.

Your answers would be appreciated. Thank you !

do you mean Single Rank and Dual Rank? it should be fine, it's not like your PC would go up in smoke or anything, it either works or it doesn't

[EarthWormJM2]

https://en.wikipedia.org/wiki/Memory_rank

 

Quote

• Subject to some limitations, ranks can be accessed independently, although not simultaneously as the data lines are still shared between ranks on a channel. For example, the controller can send write data to one rank while it awaits read data previously selected from another rank. While the write data is consumed from the data bus, the other rank could perform read-related operations such as the activation of a row or internal transfer of the data to the output drivers. Once the CA bus is free from noise from the previous read, the DRAM can drive out the read data. Controlling interleaved accesses like so is done by the memory controller.^{[citation needed]}
• There is a small performance reduction for multi-rank systems as they require some pipeline stalls between accessing different ranks. For two ranks on a single DIMM it might not even be required, but this parameter is often programmed independently of the rank location in the system (if on the same DIMM or different DIMMs). Nevertheless, this pipeline stall is negligible compared to the aforementioned effects.^{[citation needed]}

 

This is more of a concern when adding RAM to a server. But if your computer can see both sticks correctly, then I wouldn't worry much. Basically you will have a slightly reduced speed since it can't communicate exactly the same between the 2 different ranks, but it most likely won't be noticeable. If you start to have issues tho, I would return the dual rank and ask for another single rank replacement.

[Tam3n]

Yes, but they cannot be put on the same channel.