Ddr5 temperatures

[sgoaty]

Interesting video if you have the time.

I've been messing with an intel system recently with less than ideal airflow. I was looking to get the RAM to run a bit faster as it's M die so should be capable of more than the 5600 cl40 it's rated to. I was lazy and used the memory try it on the motherboard and it was memtest stable at 6000 cl36 I ran prime and heaven simultaneously for a few hours and the system locked up. I restarted and ran it again straight away and noticed the RAM was up to 66c it locked up again almost immediately. I rigged a fan over the ram and tried it again. I had over 12 hours stable and RAM temp peaked at 47c.

I haven't really given RAM temperatures much thought before now. Those RAM coolers are looking quite appealing but it's annoying having fancy RGB ram then covering it up with ugly fans.

 

[ATIorNvidia]

RAM is pretty heat tolerant at JEDEC specs/timings but gradually gets more sensitive the higher/tighter you go. If you have your tREFI maxed out for example then you'll find that you need to keep them ~50c and under to be stable.

I don't think you're at risk of actually damaging them, though.

 

[Purgatory]

RAM is pretty heat tolerant at JEDEC specs/timings but gradually gets more sensitive the higher/tighter you go. If you have your tREFI maxed out for example then you'll find that you need to keep them ~50c and under to be stable.

I don't think you're at risk of actually damaging them, though.

The heating issue effects the other chips that are now on DDR5, not the RAM chips as much.


DDR5 DIMMs feature two key new controllers/ICs directly on the module, rather than on the motherboard as in previous generations:

• PMIC (Power Management Integrated Circuit): This is the main "controller" for power. It manages the voltage regulation (converting 5V to 1.1V VDD) directly on the DIMM, resulting in cleaner power and higher energy efficiency.
• SPD Hub (Serial Presence Detect Hub): This chip manages the interface, identification, and temperature reporting of the module.

Other specialized chips on specific DDR5 types:

• CKD (Client Clock Driver): Found on CUDIMMs (Clocked Unbuffered DIMMs) and CSODIMMs (laptop version), this chip improves signal integrity to allow for much higher frequencies.
• RCD (Registering Clock Driver): Found on RDIMMs (Server/Workstation memory) to stabilize the system and allow for larger memory configurations.
• On-die ECC: While not a "controller" chip, all DDR5 chips have this built-in capability to correct bit errors within the DRAM chip itself

 

[Blackwhite]

45 -50 C is fine for RAM

 

[sgoaty]

I didn't really want to but I bought a RAM cooler. I didn't want one with RGB fans as I wanted to be able to see my RGB RAM. I'm quite pleased with the one I chose.

Worst case scenario ( heaven and prime 95 running) I've went from 72c to 57c and that's with the ambient being 5c higher than yesterday. Mem test has went from 62c to 45-46c and it's inaudible.

 

[Blackjack Davy]

I've been messing with an intel system recently with less than ideal airflow. I was looking to get the RAM to run a bit faster as it's M die so should be capable of more than the 5600 cl40 it's rated to. I was lazy and used the memory try it on the motherboard and it was memtest stable at 6000 cl36 I ran prime and heaven simultaneously for a few hours and the system locked up. I restarted and ran it again straight away and noticed the RAM was up to 66c it locked up again almost immediately. I rigged a fan over the ram and tried it again. I had over 12 hours stable and RAM temp peaked at 47c.

I haven't really given RAM temperatures much thought before now. Those RAM coolers are looking quite appealing but it's annoying having fancy RGB ram then covering it up with ugly fans.

I hadn't given it much thought either and I really should because I've had these issues in the past.

I've got a 32gb Vengeance 6000mhz kit and its not stable beyond 5200 anymore, previously it was fine but its apparently deteriorated I noticed it when started getting BSOD and Memory Exception errors.

On checking my sticks of RAM were hot enough to burn my finger. HWINFO has an SPD Hub Temperature sensor so theres no excuse I bought a clip on RAM cooler and now its registering 34.2c. Wish I'd checked sooner.

Check your RAM temps people.

n.b. most people don't give it a second thought even a recent GN video described Ram coolers as a "borderline gimmick" but really people need to pay more attention especially with the price of DDR5 these days I thought I was fine the CPU idles in the 30c's and the GPU fans don't even start spinning until it hits 50c. Except 50c is getting toasty for DDR5 which sits directly above it. I set a custom profile so the fans idle at 30% that at least gets some air movement.

 

[BullDock]

I've got a 32gb Vengeance 6000mhz kit and its not stable beyond 5200 anymore, previously it was fine but its apparently deteriorated I noticed it when started getting BSOD and Memory Exception errors.

How long have you had the RAM kit?

Currently planning to buy 6000mhz RAM, but this has given me food for thought. I guess I will spend a lot extra and go for the Platinum one or a RAM fan kit.

most people don't give it a second thought even a recent GN video described Ram coolers as a "borderline gimmick" but really people need to pay more attention

That's me.

 

[Blackjack Davy]

How long have you had the RAM kit?

September '23 only paid £90 for it equivalent kit today is £490. Ouch.

Fan kits from a reliable manufacturer are cheap enough mine was £25 so a no brainer really, wish I hadn't forgotten mine. Has RGB but isn't plugged in (separate plug)

I didn't really want to but I bought a RAM cooler. I didn't want one with RGB fans as I wanted to be able to see my RGB RAM. I'm quite pleased with the one I chose.

Worst case scenario ( heaven and prime 95 running) I've went from 72c to 57c and that's with the ambient being 5c higher than yesterday. Mem test has went from 62c to 45-46c and it's inaudible.

Just noticed I bought the same kit as you haha

 

[momo56]

Also worth considering IOD hotspot temperatures on the cpu. Had an issue where anything over 55-60c would cause errors.

 

[clone]

I just look up my memory voltage to make sure the motherboard hasn't made a boo boo, but my motherboard comes with a option to run a ram fan temp are 38c when gaming.