Asus B550 + 5600X + 4000MHz memory

[RubioFTW]

Hi all :)

After 5 years with my system, I'm finally handing it down and building a new one. 
Hopefully this is going to last me for a while, so I'm splurging a bit. Keep in mind I'm going for longevity and stability, so I'm not looking to OC at all.

So:
 

Asus ROG STRIX B550-E
Ryzen 5 5600X
G.Skill Ripjaws V 4x8GB DDR4 4000MHz

In terms of compatibility, no worries on the mobo/cpu, I realize I'm going to have to updated the bios first and I'm ready for it.

My only question is about the memory - will I be able to run it at the required voltage for the stock timings [CL15-16-16-36 1.50V] without issues? Or will the board automatically throttle down?

I'm a bit rusty, so I apologize if this is a bit of a basic question. After googling and reading posts for about an hour, overall I think I'm good, so I'm mainly looking for some reassurance and perhaps a few pointers for my first boot...

Thanks!

 

[Downkey]

2 minutes ago, RubioFTW said:

Hi all

After 5 years with my system, I'm finally handing it down and building a new one. 
Hopefully this is going to last me for a while, so I'm splurging a bit. Keep in mind I'm going for longevity and stability, so I'm not looking to OC at all.

So:
 

Asus ROG STRIX B550-E
Ryzen 5 5600X
G.Skill Ripjaws V 4x8GB DDR4 4000MHz

In terms of compatibility, no worries on the mobo/cpu, I realize I'm going to have to updated the bios first and I'm ready for it.

My only question is about the memory - will I be able to run it at the required voltage for the stock timings [CL15-16-16-36 1.50V] without issues? Or will the board automatically throttle down?

I'm a bit rusty, so I apologize if this is a bit of a basic question. After googling and reading posts for about an hour, overall I think I'm good, so I'm mainly looking for some reassurance and perhaps a few pointers for my first boot...

Thanks!

 

4000mhz is overkill and expensive. A kit of 3600mhz Cl16 would be better.
Also why do you need the B550-E? The B550-F Gaming from ASUS is a great board and is $80 less.

[-rascal-]

8 minutes ago, RubioFTW said:

Hi all

After 5 years with my system, I'm finally handing it down and building a new one. 
Hopefully this is going to last me for a while, so I'm splurging a bit. Keep in mind I'm going for longevity and stability, so I'm not looking to OC at all.

So:
 

Asus ROG STRIX B550-E
Ryzen 5 5600X
G.Skill Ripjaws V 4x8GB DDR4 4000MHz

In terms of compatibility, no worries on the mobo/cpu, I realize I'm going to have to updated the bios first and I'm ready for it.

My only question is about the memory - will I be able to run it at the required voltage for the stock timings [CL15-16-16-36 1.50V] without issues? Or will the board automatically throttle down?

I'm a bit rusty, so I apologize if this is a bit of a basic question. After googling and reading posts for about an hour, overall I think I'm good, so I'm mainly looking for some reassurance and perhaps a few pointers for my first boot...

Thanks!

 

 

DDR4-4000 is the maximum Ryzen 5600X can do, while keeping the FCLCK : MCLCK : IF at 1:1:1 ratio.

If you go beyond DDR4-4000, the ratio will automatically drop to 1:1:2, which ADDS latency, which negatively impacts CPU performance.

 

DDR4-4000 is basically the max before tipping point, so you *might* or *might not* be able to ACTUALLY reach that frequency.

XMP / DOCP settings are just mainly "suggested" guidelines for the motherboard to follow.

15-16-16-16-36 are the Primary memory timings. Secondary + Tertiary still depends on the motherboard to figure them out via self re-learn / trial-and-error.
 

Depends on how much that DDR4-4000 CL15 kit is.

I think a DDR4-3600 CL14 kit is easier to obtain, and in some cases, probably cheaper, but performs just as good.

Plus, DDR4-3600 can run at 1.35V ~ 1.40V, compared to 1.50V with your mentioned DDR4-4000 kit.

[RubioFTW]

1 minute ago, Downkey said:

4000mhz is overkill and expensive. A kit of 3600mhz Cl16 would be better.
Also why do you need the B550-E? The B550-F Gaming from ASUS is a great board and is $80 less.

You're right on both counts, but:
a. I really got a good deal on the memory and decided the price difference wasn't too bad
b. Originally I was going to get the F, but it's currently out of stock everywhere and again, the price difference wasn't terrible.
Basically everything is expensive now, and nothing is in stock. If I'm screwed, I might as well enjoy the ride.

 

Also, I already ordered everything

I know it's not smart writing while I wait for the parts to get here and not before, but I just noticed the potential issue...

[RubioFTW]

1 minute ago, -rascal- said:

 

DDR4-4000 is the maximum Ryzen 5600X can do, while keeping the FCLCK : MCLCK : IF at 1:1:1 ratio.

If you go beyond DDR4-4000, the ratio will automatically drop to 1:1:2, which ADDS latency, which negatively impacts CPU performance.

 

DDR4-4000 is basically the max before tipping point, so you *might* or *might not* be able to ACTUALLY reach that frequency.

XMP / DOCP settings are just mainly "suggested" guidelines for the motherboard to follow.

15-16-16-16-36 are the Primary memory timings. Secondary + Tertiary still depends on the motherboard to figure them out via self re-learn / trial-and-error.

Thanks!

I'm not really looking to go beyond stock timings, I'm just wandering what I'll get on the first boot, and whether I should be OK just setting it to the manufacturer's timings and not:
a. just leaving it with the timings it automatically boots with
b. setting it to somewhere in between

[-rascal-]

Just now, RubioFTW said:

You're right on both counts, but:
a. I really got a good deal on the memory and decided the price difference wasn't too bad
b. Originally I was going to get the F, but it's currently out of stock everywhere and again, the price difference wasn't terrible.
Basically everything is expensive now, and nothing is in stock. If I'm screwed, I might as well enjoy the ride.

 

Also, I already ordered everything

I know it's not smart writing while I wait for the parts to get here and not before, but I just noticed the potential issue...

 

Well...the parts are already on the way....so everything is moot. 

I'll say it again, you might *NOT* be able to run it at DDR4-4000 due to the "silicon lottery" a the quality of the Integrated Memory Controller (IMC) within the CPU.

This is something you have no control over...unfortunately.

[Jurrunio]

5600x while the rest is so good feels like a bit of a waste.

 

4000MHz on 4 sticks is hard to reach, you may need to manually select a lower frequency, like 3800MHz for it to be stable.

[SavageNeo]

4 minutes ago, RubioFTW said:

setting it to somewhere in between

Check if the 4000mhz is stable if not try 3866mhz. 3866mhz will most likely work.

[-rascal-]

5 minutes ago, RubioFTW said:

Thanks!

I'm not really looking to go beyond stock timings, I'm just wandering what I'll get on the first boot, and whether I should be OK just setting it to the manufacturer's timings and not:
a. just leaving it with the timings it automatically boots with
b. setting it to somewhere in between

 

If you install it into your motherboard for the very first time (or whenever you update your BIOS), it WILL NOT run at DDR4-4000.

If the DRAM settings are left at stock / Auto, It will run at DDR4 JEDEC memory standard, which is DDR4-2133 (Yes, things are regulated and standard must be followed).

 

You will need to enable DOCP (what ASUS calls XMP on their AMD motherboards) to even try to get DDR4-4000 working.

Otherwise, you might to do manually overclocking / tweaking to get DDR4-4000 working (if DOCP fails).

 

Of course, if DDR4-4000 does not work, you can manually reduce the frequency to ... DDR4-3800 / 3600 / etc, etc.

You may also want to manually tweak the timings; this DDR4 RAM overclocking guide will be handy.

https://github.com/integralfx/MemTestHelper/blob/master/DDR4 OC Guide.md

 

@Jurrunio has a good point too....missed you are getting a 4x stick kit, rather than a 2x stick kit.

More memory modules / sticks = more stress / load on the IMC.

2x sticks will be easier to run at higher frequency versus 4x or even 8x stick of memory.

[RubioFTW]

1 minute ago, Jurrunio said:

5600x while the rest is so good feels like a bit of a waste.

 

4000MHz on 4 sticks is hard to reach, you may need to manually select a lower frequency, like 3800MHz for it to be stable.

I get it, but the price jump to the 5800x right now was a lot, I couldn't justify it. Maybe down the line this will be a cheap upgrade I can try...

Thanks for the heads up @-rascal- and @Jurrunio. I don't have an issue with sticking to 3800MHz. Stability is paramount for me, I just want to set it and forget it.
What do you think the system will boot with at first? Will it be stable enough for me to go and make sure these are set correctly?

 

[RubioFTW]

2 minutes ago, -rascal- said:

 

If you install it into your motherboard for the very first time (or whenever you update your BIOS), it WILL NOT run at DDR4-4000.

If the DRAM settings are left at stock / Auto, It will run at DDR4 JEDEC memory standard, which is DDR4-2133 (Yes, things are regulated and standard must be followed).

 

You will need to enable DOCP (what ASUS calls XMP on their AMD motherboards) to even try to get DDR4-4000 working.

Otherwise, you might to do manually overclocking / tweaking to get DDR4-4000 working (if DOCP fails).

 

Of course, if DDR4-4000 does not work, you can manually reduce the frequency to ... DDR4-3800 / 3600 / etc, etc.

You may also want to manually tweak the timings; this DDR4 RAM overclocking guide will be handy.

https://github.com/integralfx/MemTestHelper/blob/master/DDR4 OC Guide.md

PERFECT.

This is exactly what I came here looking for. Consider me reassured

Thanks!

[RubioFTW]

BTW, let's say I set it to DD4-3600 just to be on the safe side, what do I do with the other parameters? [CL15-16-16-36]
Do I need to play around with those as well? I never messed around with memory timings, I hope I'm not biting more than I can chew here

[Jurrunio]

12 minutes ago, RubioFTW said:

What do you think the system will boot with at first? Will it be stable enough for me to go and make sure these are set correctly?

In the BIOS you have many steps of memory frequency you can choose. Once you get to one that lets the system boot and you can use it for a bit, drop it 3 steps further (so say it boots at 3800MHz and have 66MHz steps, you should drop it to 3600MHz). If you dont want to stress test you could always trade more speed for stability.

 

6 minutes ago, RubioFTW said:

BTW, let's say I set it to DD4-3600 just to be on the safe side, what do I do with the other parameters? [CL15-16-16-36]
Do I need to play around with those as well? I never messed around with memory timings, I hope I'm not biting more than I can chew here

XMP or DOCP will take care of timings and voltages.

[RubioFTW]

Thanks @Jurrunio