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Difference in performance

testcy
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Toms has a good article.

https://www.tomshardware.com/features/ddr5-vs-ddr4-is-it-time-to-upgrade-your-ram

 

Long story short, in some cases it can provide a moderate performance improvement, but realistically its going to be unnoticeable. 

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What memory speeds are the systems using? The primary advantage of DDR5 is that it can go to higher speeds, but that's not necessarily the case on a laptop. And it also depends on what you're testing with, how memory bandwidth sensitive it is.

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6 minutes ago, testcy said:

I read about the benefits of DDR5 compared to DDR4, but in practice, I wonder how much difference in performance RAM makes, especially for non-gaming computers. I am using a desktop with DDR4 and a laptop with DDR5 and I am trying hard to notice any.  

What would be the use case? In games DDR5 vs DDR4 makes what ... up to 20% faster. I doubt that would be radically different experience.

And yeah, in most other use cases the difference is unnoticeable.

Pax vobiscum

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13 minutes ago, Eigenvektor said:

What memory speeds are the systems using? The primary advantage of DDR5 is that it can go to higher speeds, but that's not necessarily the case on a laptop. And it also depends on what you're testing with, how memory bandwidth sensitive it is.

DDR4-2400

DDR5-5600

17 minutes ago, Tan3l6 said:

What would be the use case? In games DDR5 vs DDR4 makes what ... up to 20% faster. I doubt that would be radically different experience.

And yeah, in most other use cases the difference is unnoticeable.

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1 hour ago, testcy said:

DDR4-2400

DDR5-5600

I'd expect there to be a noticeable difference, but your whole test is flawed since you're using two completely different systems to compare. There are so many different parts, it's pretty much impossible to attribute any change in performance to RAM.

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21 hours ago, Electronics Wizardy said:

What are you doing? Is this for stuff like spread sheets and email? CAD and modeling? What is the workload?

Stuff like that, but also video streaming, editing and compressing.

21 hours ago, Eigenvektor said:

I'd expect there to be a noticeable difference, but your whole test is flawed since you're using two completely different systems to compare. There are so many different parts, it's pretty much impossible to attribute any change in performance to RAM.

Essentially the comparison is between different sockets, but otherwise it wouldn't make much sense to compare similar systems.

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7 minutes ago, testcy said:

Essentially the comparison is between different sockets, but otherwise it wouldn't make much sense to compare similar systems.

If you want to see whether DDR5 itself makes a difference, it absolutely makes sense to keep any other component the same, if technically possible. Otherwise, any difference in benchmark results is a combination of different CPU, GPU, RAM, SSD, …

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11 minutes ago, Eigenvektor said:

If you want to see whether DDR5 itself makes a difference, it absolutely makes sense to keep any other component the same, if technically possible. Otherwise, any difference in benchmark results is a combination of different CPU, GPU, RAM, SSD, …

Understood, but technically impossible to keep any other component the same.

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2 hours ago, testcy said:

Stuff like that, but also video streaming, editing and compressing.

Essentially the comparison is between different sockets, but otherwise it wouldn't make much sense to compare similar systems.

If your working with video, what codecs, what programs, what are you doing in the edits and more?

 

Whats the rest of the system? 

 

Probably not a big difference in performance.

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On 3/5/2026 at 8:29 PM, testcy said:

I read about the benefits of DDR5 compared to DDR4, but in practice, I wonder how much difference in performance RAM makes, especially for non-gaming computers. I am using a desktop with DDR4 and a laptop with DDR5 and I am trying hard to notice any.  

Same, my laptop has DDR5 and an am5 CPU... don't really notice anything compared to my DDR4 am4 PC, except like video encoding is way faster (I think because the CPU has 16 cores...) 

 

2 hours ago, Eugene28 said:

fully tuned b die, will be small difference from ddr5

I really have a hard time wrapping my head around why people buy am5 systems... few thousand bucks for like, what 10% better performance?

 

 

Edit: even google is unable to tell me the diff, except am5 has "faster technology"... 🥱 

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2 hours ago, Mark Kaine said:

Same, my laptop has DDR5 and an am5 CPU... don't really notice anything compared to my DDR4 am4 PC, except like video encoding is way faster (I think because the CPU has 16 cores...) 

 

I really have a hard time wrapping my head around why people buy am5 systems... few thousand bucks for like, what 10% better performance?

 

 

Edit: even google is unable to tell me the diff, except am5 has "faster technology"... 🥱 

Well it's only a few hundred more for the increased performance.

 

Those that trade in a perfectly good am4 system for a 5 may be wasting money.

 

But if I am building new right now, then it's only a few hundred more for am5 build over an am4.

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51 minutes ago, Dedayog said:

Well it's only a few hundred more for the increased performance.

 

Those that trade in a perfectly good am4 system for a 5 may be wasting money.

 

But if I am building new right now, then it's only a few hundred more for am5 build over an am4.

Yeah mb, I meant upgrade... even though you could also say people can sell their am4 systems, but that's really cumbersome (I don't trust ebay for one...) 

 

But if someone is like on am3 or doesn't have a computer yet and wants a new PC, sure go am5, it's true it's not that more expensive overall. 

The direction tells you... the direction. 

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7 hours ago, Mark Kaine said:

Yeah mb, I meant upgrade... even though you could also say people can sell their am4 systems, but that's really cumbersome (I don't trust ebay for one...) 

 

But if someone is like on am3 or doesn't have a computer yet and wants a new PC, sure go am5, it's true it's not that more expensive overall. 

How is it not that more expensive if you need more than $500 / €500 to buy 32GB DDR5?

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