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I load cpu-z to check if it duel channel and it say 4x32 bit channel

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I load cpu-z and maxxMem2 to check if it duel channel and it say 4x32 bit channel.
What that mean duel or single channel?

I have ddr5 6400MHz kits
 
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DDR5 is (2) channels per module, so yes, (4) channels is correct.
 
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If it was 2 channel you'd have DDR4... I just checked mine, lol.
 
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Just so you know for next time, it is 'dual'.

Dual with an “a” means “consisting of two elements, aspects, or having two like parts.” Duel with an “e” means “a combat between two people” or “a conflict between people, ideas, or forces.”
 
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I see "Quad channel" with my 2 sticks of DDR5.... :D
 

ir_cow

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I see "Quad channel" with my 2 sticks of DDR5.... :D
Each DDR5 DIMM has two sub channels and is still considered a single rank. Both AMD and Intel consider it single channel to the consumer. On a technical level both sub channels can be accessed independently but I believe they share the same data bus making them efficiently single channel no?
 
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Each DDR5 DIMM has two sub channels and is still considered a single rank. Both AMD and Intel consider it single channel to the consumer. On a technical level both sub channels can be accessed independently but I believe they share the same data bus making them efficiently single channel no?
I'm going to research my answers from now on as I seem to get lots wrong.
 

ir_cow

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The easy one is the rank. A pool of memory. So for example you have a bunch of ICs on one side. That is a single pool of memory with all the individual banks and groups indexed.
 
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DDR5 gives you two 2x32-bit wide channels per stick, which means that you get a quad-channel configuration when running two DIMMs.
 
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I load cpu-z and maxxMem2 to check if it duel channel and it say 4x32 bit channel.
What that mean duel or single channel?

I have ddr5 6400MHz kits
No matter how you count channels, 128 bits in total is the most you can get on a Core or Ryzen platform. That's almost universally called "dual channel" - by Intel, AMD, motherboard manufacturers, and TechPowerUp. If you have two RAM sticks, you have put them in the right slots. If there are four in your kit, you can't combine them the wrong way anyway.
 

spiral718

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4x32 = 128bit = Dual Channel.
I have the same problem but i used aida 64 extreme to see the problem too. With Aida, single channel is 64bit and that is what it said my system was running at.
Right above that, it reads the ram is capable of 128bit. Yesterday, december 4, 2023, Aida 64 extreme had an update to version 7.0. It now reads in the motherboard-chipset section, that im infact running dual channel. There is a free trail with aida64 so feel free to download and check now, if you still have the same issue, in the section i mentioned.
 

343GuiltySpark

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Two different versions of CPU-Z, 12 months apart in release, same system. 2x16GB DDR5-6000CL30 / 7800x3D / X670E Taichi

Note the Channel # readout.

The system hasn't changed in that time and is still certainly in dual channel per memory benchmarks.

Odd.

1703018963408.png
 
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Two different versions of CPU-Z, 12 months apart in release, same system. 2x16GB DDR5-6000CL30 / 7800x3D / X670E Taichi

Note the Channel # readout.

The system hasn't changed in that time and is still certainly in dual channel per memory benchmarks.

Odd.

View attachment 326063
They did this in an attempt to avoid consumer confusion. Of course, it created its own confusion. Ironic.
 
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4 × 32-bit is correct. Each DDR5 module contains two 32-bit subchannels, making of it a quad 32-bit that is equivalent to dual 64-bit in bandwidth, but has more pathways for the data to flow through.

1703020033690.png
 

343GuiltySpark

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4 × 32-bit is correct. Each DDR5 module contains two 32-bit subchannels, making of it a quad 32-bit that is equivalent to dual 64-bit in bandwidth, but has more pathways for the data to flow through.

View attachment 326067
Correct, which is the reason for my confusion that it’s no longer reported as such. From discussions elsewhere this only seems to be the case with AMD platforms.

They did this in an attempt to avoid consumer confusion. Of course, it created its own confusion. Ironic.
That’s what I’m trying to clarify. Is there documentation or discussion surrounding this specific change anywhere?
 
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