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Memory buying advice needed (speed and latency)


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I am thinking about upgrading my 16GB of HyperX 2133MHz CL14 memory to 32GB and possibly something faster. My computer's other components are I7-6700K, Asus Z170 Pro, GTX1080Ti and I mostly fly in VR. It seems that I could buy 32GB 3200MHz CL16 dual kit for around 300€ or step up to CL15 dual kit for 400€. I find the CL15 kit price a bit steep but I was wondering would it be worth it anyway for DCS. I haven't found any decently priced CL14 kits. My understanding is that the greatest upgrade for my system is the capacity increase to 32GB and that it would be better to have two sticks rather than four sticks of memory. What I don't understand is how much the speed and latency matter for DCS in VR use. Should I just buy the cheapest 32GB kit around and disregard speed or pay a bit more for quality set with good speed and latency?

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I have the same question, I run a G.Skill - Ripjaws V Series 16GB (2 x 8GB) DDR4-3200 Memory with a z170i and i5 6600k and VR. I am curious to know if mainly upgrading to 32gb will be beneficial if I choose a slower speed to be affordable, like 2400. From what I gather people say Intel the speed doesn’t matter much.

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From what I gather people say Intel the speed doesn’t matter much.

 

This. But then again some say that VR likes fast memory. Also many say that for gaming you don't need fast memory but I suspect that is relevant with less demanding games.

 

Maybe someone with more knowledge about these things wants to chime in and enlighten us?

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As the graphicscard is the most limiting factor for VR, the speed of RAM does not really matter in fact for VR. It will only benefit if your graphicscard is not at 100%.

So 32GB would be fine, to keep swapping at a minimum, but faster than 3200 ist not necessary in my opionion.

Running on:

i7-6700k @4.5GHz, 32GB DDR4-3200 TridentZ, EVGA 1080 FTW2, Asus Maximus Hero VIII, Asus PG279Q, HTC-Vive, Thrustmaster HOTAS Warthog, T.Flight Rudder Pedals, Roccat Ryos MK Glow, Roccat Kone XTD

or

Gigabyte P55V6 Notebook, i7-6700HQ, GTX1060-6GB, 16GB Ram

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But the question is, how low speed is too slow? A 2400 vs 3200 will be too much difference? If not, then 2200 etc? At what point will the speed matter really? I have installed a nvme ssd and did not notice much of a difference in game performance, but price I regret a lot. These memory prices are astronomical nowadays and my salary is not lol.

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Here's a great way to find out!

 

 

Take your existing system, and go into the BIOS/UEFI and down-clock your existing memory.

 

 

For example, if you have 3200 MHz memory, run it at 2133.

 

 

Load up a really "heavy" mission with lots of units doing lots of things--especially ground units. See if it makes any difference.

 

 

There's your answer :)

 

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The price of cas 16 3200mhz ram is honestly not too far off from the fastest 2133mhz sticks, at least on Newegg.

 

CAS 15 and CAS 14 start to get up there in price but personally I'd just get the cas 16 32 GB 3200mhz as the price difference is maybe like $40 USD over many 32GB 2133mhz kits afaict. If anything the extra $40 is worth not driving yourself crazy over choices. :) As long as your mobo supports that speed.


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Volume over speed & latency is the 1st rule. Rather 32GB 3000 than 16GB 4133 as an extreme example.

 

 

I would also settle with 3200MHz if you aim for 32GB. Up to 16GB and 2 modules density of and amount of modules is still allowing very high frequencies on most boards. If you either double the amount of modules ( 4x8 ) or double the density ( 2x16 ) you enter the terrain of headache and pain with extreme modules above 3000 or 3200.

That's why I would rather get 32 GB 3200MHz "only" instead of my 3600 that wont run in this board, too tight latency with CL16-3600.

3200 CL16 is still above where anywould would guess a bottleneck, even with 2133 I dont see much difference when locked at 60fps, tho havent tested that with Rift tbh, that may make a difference there.

Gigabyte Aorus X570S Master - Ryzen 5900X - Gskill 64GB 3200/CL14@3600/CL14 - Asus 1080ti EK-waterblock - 4x Samsung 980Pro 1TB - 1x Samsung 870 Evo 1TB - 1x SanDisc 120GB SSD - Heatkiller IV - MoRa3-360LT@9x120mm Noctua F12 - Corsair AXi-1200 - TiR5-Pro - Warthog Hotas - Saitek Combat Pedals - Asus PG278Q 27" QHD Gsync 144Hz - Corsair K70 RGB Pro - Win11 Pro/Linux - Phanteks Evolv-X 

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  • 3 weeks later...

Thanks for the answers. Last night I installed my new RAM kit. I bought 32GB Ripjaws V 3200MHz DDR4 CL16. Previous kit was HyperX 2133MHz DDR4 CL14.

 

I did a little bit of benchmarking to get some idea about how this change affects my system. I fired up Epsom campaign's mission 12, took off flew straight ahead couple of miles, turned around and stopped FRAPS measurement when I was back over the airfield. I tried four different setups. 16GB HyperX at 2133MHz, 16GB HyperX at 1500MHz, 32GB Ripjaws at 2133MHz and 32GB Ripjaws at 3200MHz. The average fps's of all the setting were within 1 fps (21.3 - 22.3) so it seems that at least in my very small scale and quick benchmark's the bottleneck was probably something else than memory ;) . Anyway with 32GB at 3200MHz the game might have seemed a little bit smoother and I got slightly higher min and max fps's so maybe it had some minimal effect (or placebo at least).

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:thumbup:

 

 

Top job

Gigabyte Aorus X570S Master - Ryzen 5900X - Gskill 64GB 3200/CL14@3600/CL14 - Asus 1080ti EK-waterblock - 4x Samsung 980Pro 1TB - 1x Samsung 870 Evo 1TB - 1x SanDisc 120GB SSD - Heatkiller IV - MoRa3-360LT@9x120mm Noctua F12 - Corsair AXi-1200 - TiR5-Pro - Warthog Hotas - Saitek Combat Pedals - Asus PG278Q 27" QHD Gsync 144Hz - Corsair K70 RGB Pro - Win11 Pro/Linux - Phanteks Evolv-X 

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I currently run 1866Mhz DDR3 with a 2080ti and get about 45fps when using my Oculus with a PD OF 2.0. I did think about but a whole new rig to get some faster DDR4 ram but so far no one has been able to convince me (I’m not even looking for much convincing to be honest) it’s a wise move

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If you currently have DDR3 fitted, chances are that your motherboard won't be compatible with DDR4, in which case, the question is rather irrelevant.

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If you currently have DDR3 fitted, chances are that your motherboard won't be compatible with DDR4, in which case, the question is rather irrelevant.

 

Not quite sure who that's intended at as the OP has had his own questions answered and I didn't ask any...

Intel 12900k @ 5.2Ghz, RTX 4090, Samsung 1TB NVME, Thrustmaster Warthog & F-18 stick, Pendular Rudder Pedals - Quest Pro

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