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Discussion about DDR5 technology

Discussion about DDR5 technology

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BlueStar_LH
Posting Freak
842
04-16-2021, 04:31 AM
#1
It could be early to discuss DDR5, but I explored some details. Each DIMM supports two channels, so what we call dual channel now can be achieved with just one DIMM. Future builds might use a single DIMM for quad channel, similar to current setups. I’ve always preferred two DIMMs for dual channel performance, and most builders follow that approach to maximize speed. Would a quad channel setup default to dual channels in new builds? It sounds promising, but there’s still much to learn about this emerging technology.
B
BlueStar_LH
04-16-2021, 04:31 AM #1

It could be early to discuss DDR5, but I explored some details. Each DIMM supports two channels, so what we call dual channel now can be achieved with just one DIMM. Future builds might use a single DIMM for quad channel, similar to current setups. I’ve always preferred two DIMMs for dual channel performance, and most builders follow that approach to maximize speed. Would a quad channel setup default to dual channels in new builds? It sounds promising, but there’s still much to learn about this emerging technology.

M
mommy1973
Junior Member
21
04-16-2021, 04:53 AM
#2
Relies completely on CPU makers' decisions for memory controller setup. Predictions are premature.
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mommy1973
04-16-2021, 04:53 AM #2

Relies completely on CPU makers' decisions for memory controller setup. Predictions are premature.

K
KINGAKSKL
Junior Member
3
04-16-2021, 08:22 AM
#3
The channels in a DDR5 DIMM span 32 bits, while a DDR4 DIMM covers 64 bits. Despite these differences in technical specifics, they function similarly in practice.
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KINGAKSKL
04-16-2021, 08:22 AM #3

The channels in a DDR5 DIMM span 32 bits, while a DDR4 DIMM covers 64 bits. Despite these differences in technical specifics, they function similarly in practice.

A
apvvana
Member
63
04-17-2021, 03:37 AM
#4
There are two channels available, though it doesn<|pad|> to feel like a different setup compared to the old dual-channel DDR4 configuration, which allowed reading and writing 64 bits at once. The new DDR5 supports 40-bit channels per chip (five chips each with eight bits add up to forty), and it seems some of those bits might include error correction features by default. It’s possible the design aimed for higher capacity per chip and power efficiency by turning off one channel when needed.
A
apvvana
04-17-2021, 03:37 AM #4

There are two channels available, though it doesn<|pad|> to feel like a different setup compared to the old dual-channel DDR4 configuration, which allowed reading and writing 64 bits at once. The new DDR5 supports 40-bit channels per chip (five chips each with eight bits add up to forty), and it seems some of those bits might include error correction features by default. It’s possible the design aimed for higher capacity per chip and power efficiency by turning off one channel when needed.