Review: Core i9 12900K DDR4 3600 vs DDR5 5200 performance

it is and it isn't, the biggest issue would be the voltage regulation ,which differs alot, otherwise, It probably would just make the board more expensive , not necessarily that challenging to do.

 

Why do reviews center on voltage when talking about power used with memory?
Power is wattage, not voltage. A decrease in voltage could easily accompany an equal or greater increase in current. As we know Voltage x Current is wattage (power)
Now since faster memory generates more heat, it would make sens that the power draw is higher, not lower.

 

the voltage effects the maximum possible current draw. so at any given frequency, a lower voltage is going to draw less current. Obviously 1 metric isn't going to tell the whole story , but voltage is a significant factor.

also note that ddr5 has looser timings, If im not mistaken , while the frequency is higher, that actual time a commands are active/not active is not that different, so I would assume going from 3600 c16 to 5200 c16 is going to draw more power than going to 5200 c40, mind you that is my assumption(maybe someone can shed light on that).

 

Yep. Undervolting is often done to reduce heat and power draw. Especially with GPUs. The old radeons 290/x, Vega and RTX 3080 have been undervolted by both gamers and miners resulting in significantly reduced wattage.

 

Why does the DDR5 report as quad channel?

 

If it's in a quad channel configuration it will report just that. Same with a DDR4 configuration.

I have seen people on here with their DDR4 setups showing quad channel with 100+GB/s bandwidth if that is what you are referring to maybe?

*Edit:. Yeah the one user shows theirs quad channel DDR5 being just that.

 

3rd time my "entry level" ddr5-4800 fails to be delivered, don't believe any delivery schedule you are given by retailers
same for my uber expensive motherboard heh
starting to really hate ddr5 and hoping manufacturers make ddr4 versions of their high ends because I need 10gb etc...and the best boards are all ddr5 only

 

You should have went with AM4 instead and top DDR4

 

It has 2x channels per dimm

"With DDR5, each DIMM will have two channels. Each of these channels will be 40-bits wide: 32 data bits with eight ECC bits. While the data width is the same (64-bits total) having two smaller independent channels improves memory access efficiency."

 

thanks I had never heard of this, did Linus say this in it's video about ddr5 ? must have missed that part ><

and to reply kapu : i'm running a 5950x right now but it's a half work half gaming computer and next I'm planning a full on max fps gaming PC and reselling the amd hw let's face it I'm not working much on it lol

 

Unless you are playing ultra high fps games with low settings you aren't getting more with alderlake. I would save money for more powerful gpu in the future.

 

Arent those just memory ranks? You can use quad rank kit with ddr4 with two ranks per channel.

 

I have one computer with 5950x an 3090 too. Playing on 12900k only now Drawing less watt, and higher fps

 

You are right but there is another improvement that could be responsible.
https://www.igorslab.de/en/ddr5-dee...ry-standard-and-examples-from-the-practice/2/

Check the images under "DDR4 vs DDR5 memory topologies" -text is part of the image so you cant search for it.
The last image shows both IMC controllers connect to both ram channels at the same time.

 

Thanks Hilbert for the interesting review !

I'd leave a comment on a typo here : on page 3 "Hardware & Software Used", the link to the RTX 3090 review points to the RTX 2080 Ti

 

Looks like in the future there's great potential for more performance. Just like when we saw the first DDR4 reviews.

 

For KONTAKT DDR5 makes a lot of difference, the last chart.

DAWbench 2021 Suite - Intel 12th Gen Results.

 

No need to wait any longer...
Hynix IC is the key

 

Only if you choose DDR5 instead of the much cheaper DDR4.

 

And when ddr5 becomes less expensive, more available and faster you are stuck with ddr4 board.