Is 1Rx8 and 2Rx8 RAM the same as SRx8 and DRx8?

[rebate]

I am looking at some DDR4 ram and see that the Kingston Fury is listed as 2Rx8 and the Crucial RAM is listed as SRx8. So is SRx8 the same as 1Rx8, and they are just using different terminology? If so, which is preferable?

Kingston: http://www.newegg.com/Product/Product.aspx?Item=N82E16820104530&ignorebbr=1


Crucial: http://www.newegg.com/Product/Product.aspx?Item=N82E16820148858&cm_re=crucial_ddr4-_-20-148-858-_-Product

 

[Unolocogringo]

The Kingston memory is a little better.
It is CAS14 , the Crucial is CAS15

 

[rebate]

The Kingston memory is a little better.
It is CAS14 , the Crucial is CAS15

Thinking Corsair LPX will be my choice now. I know they are cas13, but what is the significance of the four timing numbers (13-15-15-28)?


http://www.newegg.com/Product/Product.aspx?Item=N82E16820233832&cm_re=CMK16GX4M2A2133C13R-_-20-233-832-_-Product

 

[Unolocogringo]

Basically lower is better.
It is the wait times in cycles that the memory takes to get a bit of data to be transferred out of memory.
From the time the CPU, Graphics Card, Programs etc... ask for a memory read, it takes a certain amount of cycles for it to be read and waiting on the bus to be transferred to whoever ask for it.

More info here.
https://en.wikipedia.org/wiki/CAS_latency

 

[RevivalTech]

I am looking at some DDR4 ram and see that the Kingston Fury is listed as 2Rx8 and the Crucial RAM is listed as SRx8. So is SRx8 the same as 1Rx8, and they are just using different terminology? If so, which is preferable?

Kingston: http://www.newegg.com/Product/Product.aspx?Item=N82E16820104530&ignorebbr=1


Crucial: http://www.newegg.com/Product/Produ...858&cm_re=crucial_ddr4-_-20-148-858-_-Product

Old post and all, but I landed here to double check what I thought DRx8 meant, so just want to correct the official solution that was marked. That isn't exactly the answer this OP question, the links is talking about timing latency.

The answer to the OP question is: You want Dual Rank

1Rx8 / SRx8 = Single Rank - The Single Rank RAM, as the name suggests, consists of a single set of memory chips dedicated to reading and writing processes. In appearance, the user can actually see the memory chips mounted on one side of the RAM unit. These memory chips have a minimum capacity of 4 bits and can be placed parallelly.

2Rx8 / DRx8 = Dual Rank - Single Rank RAMs usually have a one-sided chip placement, while Dual Rank RAMS have chips on both sides. For more precision, users can read the specification stickers on the RAM. For example, Single Rank chips use coding like 1Rx8, and Dual Rank chips use coding like this: 2Rx8

Dual rank has been seen in some cases to make a 10%+ performance difference on gaming laptops. Dual rank FTW

Cheers

 

[USAFRet]

Old post and all, but I landed here to double check what I thought DRx8 meant, so just want to correct the official solution that was marked. That isn't exactly the answer this OP question, the links is talking about timing latency.

The answer to the OP question is: You want Dual Rank

8+ years later, I hope the OP is still not looking for new RAM.

Please don't dredge up ancient threads.