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ASH7

4400mhz Ram Running at 2133mhz

13 minutes ago, ASH7 said:

I7 8700K

 

Looks like DDR4-4400 MHz is too aggressive for the i7-8700K.

 

What brand and kit model of RAM did you buy?

 

Try this:

  • Enable XMP (so the timings, voltages are set to XMP spec)
  • MANULLY change the DRAM frequency ratio from [Auto] to DDR4-3600 / 3400 / 3200 / 3000 in BIOS
    • Try 3600, and if it doesn't work, then work your way down the frequency list
  • Save an exit, and see if works
  • Keep in mind Intel only *guarantees* up to DDR4-2666, so anything above is considered overclocking.
    • But Intel CPU's Integrated Memory Controller (IMC) is pretty robust; DDR4-3200 ~ 3400, at least, should be easily doable
    • Again overclocking anything, nothing is 1100% guaranteed.

 

The motherboard design / topology (e.g. your AsRock Z390 [which model?] ) plays a role, too.

Not just the "silicon lottery" of the CPU.

 

Task Manager is really finicky.

Some users see the actual RAM frequency rating, others see the effective rating.

MY Task Manger shows the effective speed, so DDR4-3400. CPU-Z shows 1700 MHz.

image.thumb.png.12241374f1c26f59e094724a00c879ed.png

 

 

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Posted · Original PosterOP

So I decided to purchase a new ram (Steel Series Viper 4400mhz) and for some reason is only running at 2133mhz, when i go to the bios it says that XMP profile 1 is enabled, it even says that it supposed to run at 4400mhz but when it boots I go to the task manager and it says 2133mhz I already tried to update my bios and it didn't worked anybody know how to make it run at 4400mhz? my motherboard is a z390ASrock

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Just now, ASH7 said:

So I decided to purchase a new ram (Steel Series Viper 4400mhz) and for some reason is only running at 2133mhz, when i go to the bios it says that XMP profile 1 is enabled, it even says that it supposed to run at 4400mhz but when it boots I go to the task manager and it says 2133mhz I already tried to update my bios and it didn't worked anybody know how to make it run at 4400mhz? my motherboard is a z390ASrock

DDR = double data rate.

Every Hz (tick) it can transfer two things, meaning 4400Mhz memory actually is 4400MT/s (T = transfers) and 2200Mhz.

 

The AsRock Z390 motherboards seem to support 4300Mhz at the most, which - as discussed above - is actually 2150Mhz. Close to that 2133Mhz Task Manager mentions.

Task manager for me mentions 1333Mhz, while my memory is actually running at '2666Mhz', for example

 

In my experience Task manager has been updated a couple times, it has sometimes shown the 'double speed'/'advertised speed' in the past I think.

Double check the speed with a program like CPU-Z. They show the speed under Memory > DRAM frequency.

 

 

TL;DR: it's probably running correctly, because double data rate. Check CPU-Z to be sure.


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Sorry if my post seemed rude, that is never my intention.

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8 minutes ago, ASH7 said:

boots I go to the task manager and it says 2133mhz

 

3 minutes ago, minibois said:

TL;DR: it's probably running correctly,

afaik, task manager reports effective speed than actual frequency (for me at least)

 

seems like his RAM speed isnt applying

 

edit: doubled checked my intel and AMD system, both reporting effective speed in TM, not actual freq


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Like @minibois said, DDR is double data rate, so the true clockspeed is half of the advertised clockspeed. However, I doubt that this is what's happenign (2133 is a very specific number).

Check what XMP is actually changing, and try manually setting RAM speed to 4400Mhz in BIOS.

 

Also, 4400Mhz is so fast that the CPU memory controller might not be able to keep up. Maybe try slow steps (start at 3600Mhz or 4000Mhz) and see where the limit is.


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1 minute ago, Moonzy said:

afaik, task manager reports effective speed than actual frequency

seems like his RAM speed isnt applying

image.png.f052beaa1899dbb00a9a1f2833b25f21.png

this is DDR4 at '2666Mhz'.

 

Again, this is why I mentioned in my post OP should check with CPU-Z. Task Manager has changed their way of reporting memory speed a couple times in my experience.


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Sorry if my post seemed rude, that is never my intention.

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Posted · Original PosterOP
1 minute ago, minibois said:

image.png.f052beaa1899dbb00a9a1f2833b25f21.png

this is DDR4 at '2666Mhz'.

 

Again, this is why I mentioned in my post OP should check with CPU-Z. Task Manager has changed their way of reporting memory speed aimage.thumb.png.ff25b0b4f8ebe5585fed9c45900f29ab.pngouple times in my experience.

image.thumb.png.ff25b0b4f8ebe5585fed9c45900f29ab.png

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Posted · Original PosterOP
9 minutes ago, RadiatingLight said:

Like @minibois said, DDR is double data rate, so the true clockspeed is half of the advertised clockspeed. However, I doubt that this is what's happenign (2133 is a very specific number).

Check what XMP is actually changing, and try manually setting RAM speed to 4400Mhz in BIOS.

 

Also, 4400Mhz is so fast that the CPU memory controller might not be able to keep up. Maybe try slow steps (start at 3600Mhz or 4000Mhz) and see where the limit is.

I tried putting in 3600mhz and Im still on 2133mhz

 

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Posted · Original PosterOP

okay so I tried running it at 3000mhz and it worked idk why they would promote something that doesnt even run close to 4400mhz 

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22 minutes ago, ASH7 said:

I tried putting in 3600mhz and Im still on 2133mhz

 

 

8 minutes ago, ASH7 said:

okay so I tried running it at 3000mhz and it worked idk why they would promote something that doesnt even run close to 4400mhz 

 

What CPU are you running?

Not being able to run 3600Mhz, especially on a new Intel platform, is very surprising.


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1 hour ago, ASH7 said:

So I decided to purchase a new ram (Steel Series Viper 4400mhz) and for some reason is only running at 2133mhz, when i go to the bios it says that XMP profile 1 is enabled, it even says that it supposed to run at 4400mhz but when it boots I go to the task manager and it says 2133mhz I already tried to update my bios and it didn't worked anybody know how to make it run at 4400mhz? my motherboard is a z390ASrock

Be sure to save you changes before exiting bios. I had the same issue but you have to save your changes. 

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Posted · Original PosterOP
1 hour ago, RadiatingLight said:

 

 

What CPU are you running?

Not being able to run 3600Mhz, especially on a new Intel platform, is very surprising.

I7 8700K

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Posted · Original PosterOP

ok so I tried 3500mhz and it worked I guess thats the max I can go cause when I try 3600mhz it just goes down to 2133 I think is a problem with the ram

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Posted · Best Answer
13 minutes ago, ASH7 said:

I7 8700K

 

Looks like DDR4-4400 MHz is too aggressive for the i7-8700K.

 

What brand and kit model of RAM did you buy?

 

Try this:

  • Enable XMP (so the timings, voltages are set to XMP spec)
  • MANULLY change the DRAM frequency ratio from [Auto] to DDR4-3600 / 3400 / 3200 / 3000 in BIOS
    • Try 3600, and if it doesn't work, then work your way down the frequency list
  • Save an exit, and see if works
  • Keep in mind Intel only *guarantees* up to DDR4-2666, so anything above is considered overclocking.
    • But Intel CPU's Integrated Memory Controller (IMC) is pretty robust; DDR4-3200 ~ 3400, at least, should be easily doable
    • Again overclocking anything, nothing is 1100% guaranteed.

 

The motherboard design / topology (e.g. your AsRock Z390 [which model?] ) plays a role, too.

Not just the "silicon lottery" of the CPU.

 

Task Manager is really finicky.

Some users see the actual RAM frequency rating, others see the effective rating.

MY Task Manger shows the effective speed, so DDR4-3400. CPU-Z shows 1700 MHz.

image.thumb.png.12241374f1c26f59e094724a00c879ed.png

 

 


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