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DDR5 Resurrections

Lei

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I got my 32GB single stick Micron on summer 2020 for 790yuan [125$]
Now 32gb Hynix 4800MHz ddr5 is 3299yuan [520$] (quadrupled)
1638724618734.png

a 16gb is 1699. Samsung price is same

I will track the price in this thread from time to time.

The title is in anticipation to the upcoming Matrix movie.

 
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You run DDR5 in a single channel?
 
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DDR5 sticks are dual channel, so 2 sticks is quad channel
Internally the DIMMs may be dual channel, but what does CPU-Z say about your memory confiruration?
I doubt it's going to say a Z690/12700 is running 4 channels, even if you have 2 DIMMs, since according to Intel:
12700 / 12900 only supports 2 channels
Z690 only supports 2 DIMMs per channel
 
D

Deleted member 24505

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Internally the DIMMs may be dual channel, but what does CPU-Z say about your memory confiruration?
I doubt it's going to say a Z690/12700 is running 4 channels, even if you have 2 DIMMs, since according to Intel:
12700 / 12900 only supports 2 channels
Z690 only supports 2 DIMMs per channel

Untitled.jpg

Dual-channel DIMMs: Similar to its mobile counterpart, DDR5 will feature two 32-bit memory channels per DIMM (versus a single 64-bit on DDR4). This means we’ll start seeing quad-channel configurations with two DIMMs. The two channels per DIMM are independent and can issue commands separately. Since the burst length and prefetch are twice as much as DDR4, this will improve the overall bandwidth by increasing the overall number of data transfers per DIMMs.
explain this then?
 
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"Dual-channel DIMMs: Similar to its mobile counterpart, DDR5 will feature two 32-bit memory channels per DIMM (versus a single 64-bit on DDR4). This means we’ll start seeing quad-channel configurations with two DIMMs. The two channels per DIMM are independent and can issue commands separately. Since the burst length and prefetch are twice as much as DDR4, this will improve the overall bandwidth by increasing the overall number of data transfers per DIMMs."

 
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So then with DDR5, I can just run a single stick and the performance will be fine, or better than DDR4 in dual channel (2 sticks mode)?
 
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So then with DDR5, I can just run a single stick and the performance will be fine, or better than DDR4 in dual channel (2 sticks mode)?

Not sure. i reckon performance "should" be better with a single DDR5 stick than a single DDR4 stick, not sure about 2 DDR4 sticks
 
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So then with DDR5, I can just run a single stick and the performance will be fine, or better than DDR4 in dual channel (2 sticks mode)?
The channels are smaller (2x32bit ddr5 vs 1x64bit ddr4), so it's still probably best to have two sticks.
 
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I got my 32GB single stick Micron on summer 2020 for 790yuan [125$]
Now 32gb Hynix 4800MHz ddr5 is 3299yuan [520$] (quadrupled)
Was DDR5 even released back then?
I thought it was released 2021.
 
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Was DDR5 even released back then?
I thought it was released 2021.
They have to manufacture it so he probably bought an early manufacturing order sample.
 

Lei

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I mean ddr4
I'm comparing the price of these 2 generations.
A micron 3200MHz single stick 125$
Was DDR5 even released back then?
I thought it was released 2021.
@R-T-B
 

Lei

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Video Card(s) Colorful 3090 ADOC active backplate cooling
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Ok, now 16gb DDR5 4800Mhz is at 1050 yuan, that's about 40% cheaper than last low.
From adata

1640122919924.png
 
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explain this then?
I was obviously wrong about how CPU-Z reported it, but I did explain DDR5 is 2 channels internally, and Intel considers 2x32-bit = 1 64-bit channel.
2ch.png

It's touched on here.
"Intel 12th Gen, while still a 128-bit memory interface as previous generations, it uses 4x 32-bit channels, not 2x 64-bit. Undoubtedly companies (even Intel) still call this dual-channel, as a channel is usually inferred to be a 64-bit interface."

This:
DDR5/DDR4 Memory Module Installation on Intel® 600 Series Motherboards Supporting 12th Generation Intel® Core™ Processors
only mentions 2 channels because that's all that's relevant to the user.
 
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Lei

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Memory Micron 32gb 3200mhz ddr4
Video Card(s) Colorful 3090 ADOC active backplate cooling
Storage WD SN850 2tb ,HP EX950 1tb, WD UltraStar Helioseal 18tb+18tb
Display(s) 24“ HUION pro 4k 10bit
Case aluminium extrusions copper panels, 60 deliveries for every piece down to screws
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Benchmark Scores cine23 20000
ADATA 16gb DDR5 4800Mhz is 859元, price dropped by 22%.
I got my Micron 32gb ddr4 3200Mhz for 790元 on July 3 2021

1644925413105.png
 
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