Dual channel ram CPUZ

[Nicbloub]

Hi everyone!
Im having a little trouble with my ram sticks.
I use the b450m d3sh motherboard with 2 sticks of 8 gb ram.
I tried ram slots 1 and 3 and in cpuz, it was telling my i was in rank single
I tried ram slots 1 and 2 and same thing in cpuz.
Does my motherboard not support dual channel at all ?

[Illusion of Progress]

Channel and rank count are not the same thing.

Check the memory tab and see if it says 2 x 64-bit by channel count.

The rank count in the SPD tab will always reflect the same thing, as it is dependent upon the actual arrangement of parts on the individual RAM module itself and not the arrangement of where you place them on the motherboard.

[Nicbloub]

Originally posted by Illusion of Progress:

Channel and rank count are not the same thing.

Check the memory tab and see if it says 2 x 64-bit by channel count.

The rank count in the SPD tab will always reflect the same thing, as it is dependent upon the actual arrangement of parts on the individual RAM module itself and not the arrangement of where you place them on the motherboard.

so, in channel count, 2x 64-bit is what i want to look for ?

[_I_]

cpuz -> memory tab -> challel # = dual
and freq x2 = ddr speed

spd tab is for checking the stats of each dimm

[Illusion of Progress]

Originally posted by Nicbloub:

so, in channel count, 2x 64-bit is what i want to look for ?

Yes, channel and rank are two totally different things. By the sounds of it, you're likely running memory that is single rank but in dual channel mode.

[Illusion of Progress]

Originally posted by _I_:

cpuz -> memory tab -> challel # = dual

It seems like one of the recent updates to CPU-Z changed this? It now says "2 x 64-bit" instead of "dual" like before, so anyone looking offhand for "single" or "dual" in the first place they see it is likely to be more confused by seeing it in rank as OP did.

[_I_]

v2.00.0 shows dual for me

[Illusion of Progress]

Oh, for me it's showing 2 x 64-bit but I think older versions did show dual so I figured it just changed how it displayed it recently.

[DevaVictrix]

Surely 2 x 64bit just means ddr?

Edit: or maybe not actually.

[Nicbloub]

ok, so it appears that single channel it 1 x 64 bit and dual channel is 2 x 64 bit because these are the only 2 options i am getting whatever the ram configuration. Thanks for the answers. Not sure why im not getting the Dual anymore. Maybe because im with ryzen but then again, would that change anything ? Things pc do sometimes..

[DevaVictrix]

I haven’t had that many computers since ddr came out but it’s never been something you have to configure… other than using slots 1,3 or 2,4.

Just benchmark to see if you are only getting single channel. The score should make it obvious.

[PopinFRESH]

Originally posted by DevaVictrix:

Surely 2 x 64bit just means ddr?

Edit: or maybe not actually.

This should indicate its dual sided non-ECC. 72bit would indicate its normal ECC.

@OP, would help if you posted which motherboard you have and what memory model. No one can tell you what your motherboard supports if we don't know what motherboard you're talking about.

[DevaVictrix]

Sdr is also 64bit… I got carried away thinking it was cpuz’s and way of indicating ddr. I was totally wrong.

I’m not sure how single or double sided, or ecc fits into any of this but it’s certainly not related to “2x64bit” !!

[PopinFRESH]

Originally posted by DevaVictrix:

Sdr is also 64bit… I got carried away thinking it was cpuz’s and way of indicating ddr. I was totally wrong.

I’m not sure how single or double sided, or ecc fits into any of this but it’s certainly not related to “2x64bit” !!

Ohhhh, @Illusion of Progress do you have a 2nd gen Ryzen? I forgot that Zen+ had that "quirk" because of those chiplet designs. Those generation of Ryzen CPU which had 2x CCXs don't have a normal "dual channel" memory controller. They have 2x dual channel memory controllers which each operate in single channel with 1 channel from each CCX that act as a single dual channel IMC. This tried to help make the memory access have a better chance of not having the latency penalty of having to go across to the second CCX for all memory access. That might be what CPUz is referencing with that in the "Channel #" field.

Integrated Memory Controller
Max Type: DDR4-2933
Supports ECC: Yes
Max Mem: 64 GiB
Controllers: 2
Channels: 2
Max Bandwidth: 43.71 GiB/s
Bandwidth: Single 21.86 GiB/s Double 43.71 GiB/s

On 2nd gen Ryzen Threadripper both channels on one CCD and both channels on the second CCD operated in tandem to work as a Quad channel IMC. The exception to this was the 2990wx which had all 4x CCDs and had 2x of the CCDs memory controllers disabled so it would still operate as a quad channel IMC.

[Illusion of Progress]

I have a Ryzen 7 3700X and I'm using four modules of dual rank RAM.

I might be mistaken, but I thought CPU-Z used to show just "single" and "dual" for the channel, but it shows "2 x 64-bit" in the channel field now with v2.0.0, so I presumed CPU-Z may have ust changed how it showed this it in recent versions (since I've seen dual channel reflected as 128-bit before). I might be wrong since I don't check CPU-Z often though.

[PopinFRESH]

Originally posted by Illusion of Progress:

I have a Ryzen 7 3700X and I'm using four modules of dual rank RAM.

I might be mistaken, but I thought CPU-Z used to show just "single" and "dual" for the channel, but it shows "2 x 64-bit" in the channel field now with v2.0.0, so I presumed CPU-Z may have ust changed how it showed this it in recent versions (since I've seen dual channel reflected as 128-bit before). I might be wrong since I don't check CPU-Z often though.

Mystery. That's odd, I just updated to 2.00 and its still showing mine as Quad.