Core i9 12900K DDR4 3600 vs DDR5 5200 performance review

#5967983

Airbud

2021-11-25 23:53

Nice review Boss... Your "final words and conclusion page" is all I needed to read for 2021.

#5967998

kanenas

2021-11-26 04:38

[youtube=HDxDM--Dr-c] ddr 4 4000cl14 (tuned 43ns) vs ddr 5 5.650 cl36 (tuned 58ns)

#5968011

kapu

2021-11-26 07:08

nizzen:

Cool story, try 6400 c28 😀 https://images2.imgbox.com/a8/00/sBhJS92o_o.png

Try 4400 cl 18. same argument. Right now ddr5 is pointless. Good for uber enthusiast with deep pockets. We are talking here about 99% of population

#5968014

Dragam1337

2021-11-26 08:25

Funny, my ancient cpu with ddr3 memory has nearly identical ram performance to the 12900k with ddr4 😀 https://i.imgur.com/OZAol9J.png

#5968030

nizzen

2021-11-26 09:55

Dragam1337:

Funny, my ancient cpu with ddr3 memory has nearly identical ram performance to the 12900k with ddr4 😀 https://i.imgur.com/OZAol9J.png

No, you are running quad channel...

#5968031

Dragam1337

2021-11-26 09:56

nizzen:

No, you are running quad channel...

Obviously, but the result is still the same 😉

#5968032

ruthan

2021-11-26 09:57

Minimum latency should be part of DDRX specs, because its matters so much and transfer speeds, we so similar thing with first Ryzen CPU design, which also had some latency issue between their blocks.. otherwise its other way how to rip off normal not too much informed customers, because they would thing than bigger speed number would mean much superior product. Otherwise it would be nice to test more memory speeds and add some timing info into charts. And yeah Quad channel should be finally available on normal platforms not just some premium workstations. I hoped a lot that AMD will use it to make some advantage over Intel, to force Intel to enable the same.

#5968039

nizzen

2021-11-26 10:42

ruthan:

Minimum latency should be part of DDRX specs, because its matters so much and transfer speeds, we so similar thing with first Ryzen CPU design, which also had some latency issue between their blocks.. otherwise its other way how to rip off normal not too much informed customers, because they would thing than bigger speed number would mean much superior product. Otherwise it would be nice to test more memory speeds and add some timing info into charts. And yeah Quad channel should be finally available on normal platforms not just some premium workstations. I hoped a lot that AMD will use it to make some advantage over Intel, to force Intel to enable the same.

Don't be blind on the Aida 64 numbers. Performance isn't all about low latency in Aida64. Just look at Zen 3 vs Intel 8,9,10,11 and 12. Zen 3 has almost the same gamingperformance as Intel, with 20ns higher. Big cache is helping Zen3 here. More on "zen3d" will help even more. Low latency is king, so is cache 🙂

#5968056

fellix

2021-11-26 12:44

nizzen:

Don't be blind on the Aida 64 numbers. Performance isn't all about low latency in Aida64. Just look at Zen 3 vs Intel 8,9,10,11 and 12. Zen 3 has almost the same gamingperformance as Intel, with 20ns higher. Big cache is helping Zen3 here. More on "zen3d" will help even more. Low latency is king, so is cache 🙂

Correct. Those synthetic memory tests measure a very narrow scope of the overall system characteristics and doesn't hint at how those numbers factor in the complete performance pipeline, particularly when comparing two different CPU architectures from different hardware vendors. In the case of AIDA64, the memory benchmark uses the most suitable routine for each CPU model, incl. hand-tuned SIMD memory instructions that are rarely employed in a production code. Unless there's something misconfigured in the system, resulting in a dramatic score reduction in this benchmark, a difference of few cycles/nanoseconds is just a wash. Don't panic over it.

#5968060

kapu

2021-11-26 13:15

Dragam1337:

Funny, my ancient cpu with ddr3 memory has nearly identical ram performance to the 12900k with ddr4 😀 https://i.imgur.com/OZAol9J.png

It only makes sense if You us common divider 😀 But impressive results none the less . Kinda funny when DDR3 can catch DDR5 🙂

#5968063

Nictron

2021-11-26 13:39

Does anyone know why none of the motherboard manufacturers released a board with both DDR4 & DRR5 slots. If you have 4 banks 2 can be DDR4 and the other two DDR5. That would lower the entry level for Alder Lake as you could use existing DDR4 3600 for a while while DDR5 timings tighten, cost lowers and frequency increases. ...

#5968081

NewTRUMP Order

2021-11-26 15:51

Dragam1337:

Obviously, but the result is still the same 😉

Except for read, write and copy.https://media2.giphy.com/media/C6JQPEUsZUyVq/100.gif?cid=ecf05e475qxwdwkotxvgbfuc4qs3504osgp8452rhcdbe64f&rid=100.gif&ct=g

#5968093

nizzen

2021-11-26 17:08

Dragam1337:

Funny, my ancient cpu with ddr3 memory has nearly identical ram performance to the 12900k with ddr4 😀 https://i.imgur.com/OZAol9J.png

This is my Quad Channel computer with DDR4: https://www.diskusjon.no/uploads/monthly_2020_02/1457584258_CB20ogAida644700mhz7980xe.PNG.2738be25dcbe75909baba4829c27f8d3.PNG QC VS QC 😉

#5968099

kapu

2021-11-26 17:24

Nictron:

Does anyone know why none of the motherboard manufacturers released a board with both DDR4 & DRR5 slots. If you have 4 banks 2 can be DDR4 and the other two DDR5. That would lower the entry level for Alder Lake as you could use existing DDR4 3600 for a while while DDR5 timings tighten, cost lowers and frequency increases. ...

Remind me when it was last time we had this type of boards. Im pretty sure i had board with ddr1 and ddr2 at the same time. Was kinda awesome. It also had pcie and agp slots at the same time. Wish i could remember the model 🙂

#5968100

Dragam1337

2021-11-26 17:26

nizzen:

This is my Quad Channel computer with DDR4: https://www.diskusjon.no/uploads/monthly_2020_02/1457584258_CB20ogAida644700mhz7980xe.PNG.2738be25dcbe75909baba4829c27f8d3.PNG QC VS QC 😉

Doesn't change anything in regards to what i said 😉

#5968124

nizzen

2021-11-26 19:29

kapu:

Remind me when it was last time we had this type of boards. Im pretty sure i had board with ddr1 and ddr2 at the same time. Was kinda awesome. It also had pcie and agp slots at the same time. Wish i could remember the model 🙂

Asrock had some models 🙂

#5968143

kapu

2021-11-26 21:12

nizzen:

Asrock had some models 🙂

It was asrock for sure . That was some "future proof" mobo. Im kind suprise there arent mobos with DDR4 and DDR5 slots now , is there any physical limitation ? Controller is in the CPU so there shouldn't be any issue ?

#5968151

Mufflore

2021-11-26 21:35

kapu:

It was asrock for sure . That was some "future proof" mobo. Im kind suprise there arent mobos with DDR4 and DDR5 slots now , is there any physical limitation ? Controller is in the CPU so there shouldn't be any issue ?

Without buffering (more latency) it may not be possible to safely include both. For example, it could put too high a load on the CPU if DDR4 and DDR5 are used at the same time. There may be trouble with the CPU controlling 2 different types of ram at the same time.

#5968169

kapu

2021-11-26 23:09

Mufflore:

Without buffering (more latency) it may not be possible to safely include both. For example, it could put too high a load on the CPU if DDR4 and DDR5 are used at the same time. There may be trouble with the CPU controlling 2 different types of ram at the same time.

No. You could only use one type at the same time. This is how it worked in the past. You can't mix it

#5968173

Mufflore

2021-11-26 23:26

kapu:

No. You could only use one type at the same time. This is how it worked in the past. You can't mix it

My point was, that doesnt prevent people from trying it. These days the ram controller is on the CPU so buffering may be needed to keep the CPU safe.