Memory chip suppliers will begin shipping DDR5 RAM later this year, but the new memory standard is expected to go mainstream in 2021 and 2022.
What We Know About DDR5 So Far : Read more
What We Know About DDR5 So Far : Read more
All other information I've seen indicates that the only source of increased bandwidth for DDR5 is from increased transfer rate, such that if DDR5 and DDR4 were running at same speed they'd have the same bandwidth. As has been the case going back all the way to the original DDR SDRAM. Is there just lots of typos/bad math in this article, or is there some other factor increasing the bandwidth of DDR5 compared to DDR4 other than transfer rate?DDR5-3200 RAM will see an increase of 1.36x in bandwidth compared to DDR4-3200. However, DRAM chips are expected to ship with a bandwidth of 4800MT/s, or 1.87x that of DDR4-3200 RAM.
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The DDR5 RAM chips are expected to start at 4800MT/s, which would be a 1.87x increase in bandwidth compared to DDR4-3200 RAM. The DDR5 standard has an official limit of 6400MT/s, but we may see some memory companies push that further.
All other information I've seen indicates that the only source of increased bandwidth for DDR5 is from increased transfer rate, such that if DDR5 and DDR4 were running at same speed they'd have the same bandwidth. As has been the case going back all the way to the original DDR SDRAM. Is there just lots of typos/bad math in this article, or is there some other factor increasing the bandwidth of DDR5 compared to DDR4 other than transfer rate?
A 32GB stick of DDR5 RAM should have the same density as a 16GB DDR4 stick while delivering roughly twice the performance.
All other information I've seen indicates that the only source of increased bandwidth for DDR5 is from increased transfer rate, such that if DDR5 and DDR4 were running at same speed they'd have the same bandwidth. As has been the case going back all the way to the original DDR SDRAM. Is there just lots of typos/bad math in this article, or is there some other factor increasing the bandwidth of DDR5 compared to DDR4 other than transfer rate?
This doesn't really make sense either. If doubling prefetch doubled bandwidth for the same transfer rate, why does DDR2 have the same bandwidth as DDR if they're both running at the same speed? Same for DDR3 vs DDR2. Same for GDDR5X vs GDDR5. Also, even if increasing prefetch did increase bandwidth at the same transfer rate, according to the article DDR5 only has 36% more bandwidth than DDR4 at the same transfer rate, not 100%:DDR5 is rumoured to have 16n prefetch mode, which if it happens means at the same clock DDR5 should be twice as fast as DDR4.
It's the same as what DDR3 brought compared to DDR2 which also doubled it compared to DDR.
DDR3 and DDR4 both had 8n prefetch, DDR5 is still unconfirmed, some says it has 8n like DDR3 & 4. While some says it has 16n, like GDDR5 & HBM2.
DDR5-3200 RAM will see an increase of 1.36x in bandwidth compared to DDR4-3200.
Back to $260+ RAM Sticks.
Rambus was garbage and short-lived... it was so garbage Intel gave them away with Pentium 4's which was also garbage. Netburst + high latency RAM FTW both running hot. My first son was born around that time period and I was running AMD while laughing at that overpriced junk.Are you old enough to remember the short lived P3 with RAMBUS/PC800? $900 for a pair of sicks