DDR 5 specs and cooler fan specs

[Yanta0205]

Been having log in problems since June 2023, so please forgive me for asking lots of questions, as I'm worried I may not be able to log in again.

With motherboards now so picky about DDR5 configurations I would like to know, so that I can get the best out of my DDR5 purchase

Often times the DDR5 product specifications leave out details. In particular I'm looking at this product;

https://www.corsair.com/ww/en/p/memory/cmk32gx5m2x7200c34/vengeance-32gb-2x16gb-ddr5-dram-7200mhz-c34-memory-kit-black-cmk32gx5m2x7200c34

Is this 1DPC 1R RAM? I assume it's one 1DPC because there are only two sticks, but I can't fin if it's single sided.

Does Corsair make any 64GB kits that are 1DPC 1R?

If no 64GB kits, how about 48GB?

I'm going to be purchasing 2xASUS Z790 ProArt motherboards and a MSI Z790A-Pro motherboard and I'll be looking for memory for all of them.

I've had to replace almost all of my 10 coolers. There is a compatibility table around somewhere for LGA1700 but it turned out to be wrong. I purchased the standoffs for LGA 1700 but the PCs kept overheating a crashing and the only way I could stop it was to get a cooler that was natively LGA 1700 Compliant. However, I had to replace the fans on all of them as the stock fans are much lower spec'd compared to the old fans. Eg 1.73 static pressure compared to 3.0 mmH2O. And the air flow on the ML's is about 20%-30% better.

However, the ML120/ML140 fans seem to have been superseded by these lower spec fans.

And 280mm coolers seem to be getting phased out in favor of 240/360 products.

Do the lower specs of the radiator fans really matter? I'm paying a significantly higher price (I'm in AU). About $70 - $100 more per cooler depending on model. So I want to get the best possible cooling, but paying $500 for a cooler, particularly when I hate RGB with a passion, is not affordable. It seems crazy to pay 40%-50% more for a cooler than might not cool as well.

oh, btw; I'm using 13600K and 13700K CPUs, and they love to warm my home 🙂

thanks

 

 

 

 

 

 

 

[LeDoyen]

single or dual rank doesn't matter. Dual rank has a very slight advantage but probably not once you'd notice.

if you want the best bang for your buck, usually a kit of 6000 CL30 will be best. You can think of it as your DDR5 equivalent to DDR4 3600 CL16 : Performs great and works out of the box on Intel 13th gen and Zen4 without needing manual tuning. Higher frequency will be marginally better but you'll pay a lot more for a couple % improvements (unless you have a very specific need for higher frequency ram)

1DPC is one dimm per channel, that's just how many sticks you install per memory channel. So a kit of 2 sticks will be a 1DPC installation. But it's not a memory spec that manufacturers put in their package. it's to say how many you install on your board.

 

[Yanta0205]

Sorry, you're saying that double sided RAM is marginally better than single sided? Ok, that's thrown me. Everything I've read online says the opposite.

On an ASRock board 1DPC 1R can run at 7200 on 1DPC 2R it drops to 6000.  That seems a significant drop to me. I won't buy ASRock boards because of that... well they have other issues too but that is the main one.

For MSI, depending on the board, it wil go from 7800 to 6600 or 7200 to 6600 between 1R and 2R

The Corsair product pages don't state whether memory is 1R or 2R.

Depending on the brand, the difference in price between the 7200 kits and the 6000 kit is less than A$50.00

Finding a 6000 MT/s kit here with CL30 is hard to find. Most of the retailers are selling CL36+ Terrible timings. I'm sure if I look hard enough I'd find something, but as the 7200 kit was on special I thought it was a good deal. I still don't know if it's single sided or double sided though. Even the retailer didn't know.

I've yet to find any motherboard from the big 4 that runs faster on 2R than it does on 1R.

Edited September 28, 2023 by Yanta0205

[c-attack]

On 9/27/2023 at 1:20 AM, Yanta0205 said:

these lower spec fans.

And 280mm coolers seem to be getting phased out in favor of 240/360 products.

Do the lower specs of the radiator fans really matter? I'm paying a significantly higher price (I'm in AU). About $70 - $100 more per cooler depending on model. So I want to get the best possible cooling, but paying $500 for a cooler, particularly when I hate RGB with a passion, is not affordable. It seems crazy to pay 40%-50% more for a cooler than might not cool as well.

Don’t forget static pressure (as pc manufacturers use it) is directly tied to RPM, so a little 40x40mm fan that runs 4000 rpm will have a very gaudy SP value listed and move about 9 cfm, totally unsuitable. Airflow is still the thing you’re after. 
 

A ML fan will have better airflow against moderate or better resistance compared to a LL fan by design. It’s got 7 flatter blades vs 9 with medium rake. Is it really going affect your cooling?  Likely not. I swap fans on and off my 64mm thick 480mm radiator and it’s tough to tell if anything changes. I know the ML-Elite moves more air through, but ultimately the difference is so small it doesn’t matter. The more radiator real estate you have, the less fan choice will matter. In a single 120mm radiator it matters quite a bit. Less so as you go up. 
 

For case fan use the same applies against tight dust filters, but generally you won’t notice a difference here either in regards to case ambient. Sometimes a particular fan blows in exactly the right spot on the motherboard at knocks your m.2 drive or outer ram stick down a few degrees, but that’s a bit lucky one way or the other. 
 

 

As for RAM, Corsair isn’t even listing the XMP timings on a lot of kits on their website and you have to go chasing that down elsewhere, so they definitely aren’t going to list single vs dual rank. Dual rank will typically give you a bump in maximum copy throughput. That may or may not be useful. I have not done a lot of heavy testing in DDR5, but in ddr4 some games definitely benefitted from dual rank and I was pretty stunned to see my 4000 dual kit run noticeable higher frame rates on high resolution monitors vs a single rank kit at 4666. With a pair of Pro Art motherboards gaming may not be the focus anyway, but the dual rank and more likely higher frequency will matter.
 

Frequency is still king for most things here. The odd spot are these new M die Hynix 24GB modules the scale well and leave the prior 32GB behind. I don’t know how much capacity you need and 96GB (2x48) info is very hard to find, but there are new Dominator Titanium modules that will have the M die 24GB modules. As for single vs dual on those kits in 6000-7000 range, all you can do is google around and comb through OC/Reddit threads looking for posts with Taiphoon burner or similar info. Sometimes you can find professional reviews with the same info. 

Edited September 29, 2023 by c-attack