Does Single Channel DDR5 hurt performance?

We know that running a single stick of DDR4 harms performance, but DDR5 is built different: Each stick has 2 channels. So we set about testing a single stick to see if there's a performance difference. Can the new design mitigate some of the detriment of running just one stick?
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Timestamps:
0:00 - Introduction
0:31 - DDR5 is built differently
1:28 - Cinebench R23
1:51 - 3DMark Time Spy
2:07 - Shadow of the Tomb Raider
2:45 - Forza Horizon 5
3:04 - Flight Simulator 2020
3:18 - Result Conclusions
3:56 - A 64 bit bus is still just a 64 bit bus
4:25 - Overall Recommendations: Stick with 2 sticks so you don't get stuck with one stick.
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[volkingdeath]

This channel deserves way more views for such high quality videos

[vladislavkaras]

Huh... I did expect a much more difference!
Thanks for the benchmarks!

[ankitlal]

Exactly what I was looking for, great video

[Bugatti]

starting my new build with single 16 gb stick of ddr5 ram. I'm just glad that even works!

[kenobi]

Great channel. Great presentation. Great information. Criminally under-subscribed

[hongockimquang]

I clicked. I liked. I watched. Such simple chores only available on good straight-to-the-point videos.

[Rbz]

I had to go with one stick because it was noticeably cheaper then 2x8gb and I can later buy another of 16 and get dual channel at 32gb, I don’t think it will be hard to find a matching hyperx stick because where I live they are the most common ddr5 dimms so yah, now I just wait for a sale or something and get another one, performance is still great, and since I wanted to OC my i5-12400f in my country I could only find ddr5 boards with external bclk clock so I had to change to ddr5 and just sell the old board with the ddr4 sticks, performance is amazing but is good to know I will get more once I go to dual channel again :)

[eliasali]

That's just what I needed
thank you

[gasiedu]

damn would of been good if i ran into this video before i bought my ram, great vid

[VijayRana]

thanks for providing this valuable information for us😊

[KetogenicGuitars]

Absolutely you can. That ~10% means nothing(for me). It is good update path if there is prospect prices coming down in like 6-12 months. There was a test about matching unrelated sticks by Linus Sebastian and they found it surprisingly unmeaningful thing. But how about choosing one of the most common sticks like Viper Steel 6000Mhz 32GB?

It was a question that I could not find the answer to for a long time. Thank you for clarifying.

[bindaasmard]

Excellent video, I was curious how would single 32gb 6000 CL30 stick would perform against 2*16gb CL36 kit ? in my country the newly launched XPG (AX5U6000C3032G-CLARBK) CL30 32gb stick costs way too less when compared with 2*16gb CL36 kit.

[treyquattro]

another excellent review with pertinent results. Besides trying to decide between Z690 and B660 right now, the other decision is between DDR4 and DDR5, and I'm struggling to justify DDR5 given the cost and no appreciable performance gain (depending on workload mix - sustained transfers vs. latency-inducing disparate transfers. e.g.). I do expect DDR5 performance to improve, but JEDEC apparently says this will be in increments of 400Mbps per year*, so seemingly there isn't a big rush. The question is whether it's worth the short term financial pain to throw the dice on future-proofing. With PCIe 5.0 and Raptor Lake apparently fitting in an LGA1700 socket, the answer just might be Yes.

* I got that figure from an interview with a Kingston exec on Igor's Lab.

[priyanshkumar]

The voice is little problematic to understand
Maybe editing the voice would be better but the content was very helpful👍
Thankyou

[carptackula]

This was an AWSEOME comparison - that you sooo much for this benchmark! I have a question not addressed: DDR5 is (now) available in (2x8GB) would it be better to go with this vs 1x16gb? (It sounds like 'it would' - ie 'dual channel is always better')

[stevencen]

I regret didnt see this video before buying my pc part. I on progress to build my first pc so im still new to this things and i just bought asus rog strix b660 f that can only use ddr 5 and i miscalculate the entire budget because i dont know ddr 5 ram will be that expensive and the performance is still below ddr 4 :(

[Chasm]

Thanks for this video. The person who built my computer clearly doesn't know what he's doing. I won't mention everything he did wrong because that would be a side-track, but this one honestly pissed me off. He put a single stick of 32 GB DDR5 6000Mhz RAM and effectively reduced performance of my computer by 10-20%. My other stick should arrive tomorrow.
I have just 2 questions for you since you clearly know what you're talking about - maybe a silly question, but bear with me - I ordered an RGB version of the same RAM stick but I have non-RGB in my PC now. Is that OK?

And secondly, if I have a RAM stick in the first slot, the second stick should go to 3rd? I have ASUS Prime B650 Plus motherboard.

Thank you and have a great day ^.^

[bodaciouschad]

2:38 How accurate can this data be? 4000mhz c15 was slower than 3600mhz c16 in your testing. Surely that can't be true on average across many repeated tests, as the 4000mhz c15 kit is both faster and lower latency.

[Ace-mrcc]

Not sure if its just me but I just purchased a New PC and it came with a single 16gb DDR5 Ram stick and I'm experiencing a ton of stuttering/FPS Spikes with over 100 FPS..