Friday, August 6th 2021
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Corsair Postulates That DDR5 Memory Runs Hotter
Corsair DIY Marketing Director, George Makris recently confirmed in a recent video that DDR5 memory could "conceivably could run much hotter than DDR4" due to voltage regulation being moved to the memory modules from the motherboard. This was reiterated by Corsair Memory Product Manager, Matt Woithe, who notes that they are prepared to handle this increased heat in Corsair DDR5 modules using their Dual-path Heat Xchange (DHX) technology. The next generation of memory also mandates the inclusion of on-die EEC which while not confirmed by Corsair will also add to the power budget of the modules. Corsair is expecting to release their first DDR5 memory modules towards the end of this year which will coincide with the launch of Intel's 12th Generation Alder Lake processors. AMD fans will need to wait until 2022 with the launch of Zen 4 to take advantage of the new DDR5 memory modules.Corsair Lab Tech Talk - DDR5 Memory
Source:
Corsair Lab
43 Comments on Corsair Postulates That DDR5 Memory Runs Hotter
Turned out the smaller they are, the more densely packed the heat is. Harder it was too cool them.
This is a bit different though, as there's no need to use the tiniest components available.
Also buck converters have very high efficiency and they don't need to put a small one.
The chips are being designed with the on-die ECC, so maybe it won't be a big increase in heat, who knows. As they go into new nodes though, they will likely get some power savings(which is probably not going to be very big, but even small things help).
I think Corsair is just saying that to cover their ass in case they release a kit which thermal throttles, "it's not our fault! It's how DDR5 is"-kind of thing.
B die at 1.5/1.6v even with the overdesigned heatsinks (which really aren't that great) can hit 40-50c under stress, which is where they start to become unstable. With extremely high airflow they can be full load under 30c, but really shouldn't be necessary.
Hopefully manufacturers pull their head out of their ass and start making function over form heatsinks.
Put more simply: Your argument centers around an extreme edge case in the current generation. Yet you're (seemingly) applying it to non-extreme cases for the next generation. That's some deeply flawed logic. If DDR5 runs hotter than DDR4 when pushed to 33% higher voltage than stock, then ... that's not much of an issue. It might be an issue for overclockers or people running extreme high end RAM kits, but everyone else? Not a chance.
Also, what you're describing is a characteristic of a specific series of DDR4 DRAM dice from a specific vendor. We have literally zero way of knowing if those characteristics will transfer to future DRAM generations in any way, shape or form, beyond general facts like "more power and voltage = more heat".
There are even 1.6v kits in top end bins.
Of course, this is all pure speculation, and the specifics of how DDR5 will scale in terms of thermals, voltage and power draw are entirely unknown to people outside of the industry at this point. But this seems like a CYA announcement more than anything else, and I see no real reason to expect problems for the vast majority of users. Unless DRAM makers choose to cheap out on the parts or designs for their VRMs, in which case that's on them entirely.
Also, RGBLEDs add heat - so if companies must include RGBLED in their product lineup, at least keep making the top-tier SKU without it too.
seems they already make some
www.amazon.com/ARCTIC-Breeze-Mobile-Flexible-Portable/dp/B003XN24GY/
Patriot's 4266 kits and below are all 1.35V
viper.patriotmemory.com/products/viper-steel-ddr4-performance-memory-ram-viper-gaming-by-patriot-memory
Browsing through Newegg the majority of the 4000+ kits from Corsair/Crucial are also 1.35V or 1.40V. The reason for this is that the maximum safe voltage the CPU's IMC can drive at is 1.444V (1.35V spec + 7%). Of cource you can overvolt your CPU if you want, but it's a risk that many people won't take, thus capping the market appeal of higher-voltage kits and why 1.5V is oft-cited as the maximum anyone should run. ofc, you can set fan speed based on the temps of the nearest motherboard sensor to the RAM slots without any garbage software running in the background.
Im assuming that’s ECC?
and I don’t think the market segregation team at Intel is gonna like that. ;)
Tight timing high end B die 3800mhz+ is typically 1.5v-1.6v. With higher voltage XMP for tighter sub timings.
There's a few fast kits with decent timings at 1.45v, but I haven't personally tried them so maybe they're not completely stable, or rather optimistic.
Do your own research, B die finder is a good tool to identify B die.
On your own link, the 4000+ have profile 1 at 1.45, and profile 2 at 1.35.
Win-win; we get ECC and we get to flip the bird to Intel's shittiest department.