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DDR3 1866 ram running at 1400Mhz?

Tags:
  • Memory
  • DDR3
  • RAM
  • G.SKILL
Last response: in Memory
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January 21, 2014 6:59:17 PM

I purchased 8gb of G.Skill Ripjaws X DDR3 1866 memory for my first build because they were on sale for the same price as the 1600 version; however my computer claims that they are running at only 1400Mhz. Is there something I have to do in the bios to get them to run faster?

My mobo is M5A97 R2.0 from Asus which should support up to 1866 without the need to overclock.

More about : ddr3 1866 ram running 1400mhz

a b } Memory
January 21, 2014 7:02:31 PM

1400 is a strange number

Did you overclock your system FSB?

You can change the RAM speed from the BIOS. Should be a profile it can grab and use the proper timings, otherwise you'll have to manually set the speed and timings and voltage according to the RAM.
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January 21, 2014 7:06:21 PM

did u enable XMP profile in bios?
that should solve the problem
But 1400 is indeed a really weird number :( 

I dont recommande u playing with the timings. Just use default settings.
Even professionals dont feel confortable playing with the timing since the first 3 numbers are just the basic-there are a bunch more
Although 1400 vs 1866. unlike u have maybe a haswell i7, u wouldnt really feel the difference unless ur doing synthetic benchmark
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a b } Memory
January 21, 2014 7:07:52 PM

Yingda Wang said:
did u enable XMP profile in bios?
that should solve the problem
But 1400 is indeed a really weird number :( 


It's AMD so it may not have XMP support.
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January 21, 2014 7:15:50 PM

Oh right, They u do have to set them manuely. Be carefull though
Ask Tradesman1 for help, hes a god
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January 21, 2014 7:21:53 PM

So on CPU-Z, it says the DRAM Frequency is 722.4 Mhz. I take it I'm supposed to multiply that by two which gives about 1444 Mhz. I will ask Tradesman1 for help on this one. I'd rather not fry my PC, especially since I've only had it a couple of weeks.

Thanks for the tips guys.
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Best solution

a c 2209 } Memory
January 21, 2014 7:27:50 PM

Go into the BIOS and look for EOCP or DOCP (or XMP) in the advanced area, if available enable it and select 1866
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January 21, 2014 8:06:46 PM

Tradesman1 said:
Go into the BIOS and look for EOCP or DOCP (or XMP) in the advanced area, if available enable it and select 1866


So I found DOCP in the Ai Tweaker section and selected it. I then chose DDR3-1866 for the DRAM OC Profile, and I changed the memory frequency to auto. I'm now getting around 800Mhz DRAM frequency on CPU-z. That's closer to what I have but still not quite there. Should I explicitly set the memory frequency, or is there something else I should do?
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a b } Memory
January 21, 2014 8:08:40 PM

Should be a profile called DOCP which will set it to 1866.
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January 21, 2014 8:15:42 PM

So now I've set both the OC Profile and the Memory Frequency to DDR3-1866 and now the DRAM frequency reads 936. I guess for some reason setting the memory frequency to auto makes the ram run at 1600. Is there anything I else I should change to ensure my computer doesn't explode in the next few minutes?
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a b } Memory
January 21, 2014 8:19:26 PM

Make sure the CAS timings match the sticker on the RAM, and make sure the RAM voltage matches the RAM. Should be 4 timings (usually like 10-11-10-24)

It's DDR (Double Density RAM), so it read/writes at 936 at the same time (Double), thus 1866.
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a c 2209 } Memory
January 21, 2014 8:26:08 PM

Yep, as mentioned have to select the desireed freq, here 1866, COngrats, you're there ;)  It won't explode :)  but next check the timings and manually change if off, if any problems let me know and we can adjust the voltages if needed
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January 21, 2014 8:39:56 PM

Tradesman1 said:
Yep, as mentioned have to select the desireed freq, here 1866, COngrats, you're there ;)  It won't explode :)  but next check the timings and manually change if off, if any problems let me know and we can adjust the voltages if needed


So I checked the bios for DRAM voltage and it came up as 1.5v (as expected); however, the CAS latency was set to 11 and the advertised CAS from G.Skill says 9. What numbers (if any) should I change?

Here's a couple of screenshots:

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a b } Memory
January 21, 2014 8:42:53 PM

The first four numbers going down on the list match the four numbers on the sticker

So if the sticker says 9-10-9-28, than set the numbers down to
CAS 9
RAS to CAS 10
RAS PRE 9
RAS ACT 28


Lower number = better performance.
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a c 2209 } Memory
January 21, 2014 8:46:15 PM

Alec Mowat said:
The first four numbers going down on the list match the four numbers on the sticker

So if the sticker says 9-10-9-28, than set the numbers down to
CAS 9
RAS to CAS 10
RAS PRE 9
RAS ACT 28
_____________________________

+1, Correct - looks like things well in hand - if any problems - feel free to PM me, will prob be needing voltage adjustments if any problems, I'll see PMs quicker

Lower number = better performance.


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January 21, 2014 8:54:49 PM

Alec Mowat said:
The first four numbers going down on the list match the four numbers on the sticker

So if the sticker says 9-10-9-28, than set the numbers down to
CAS 9
RAS to CAS 10
RAS PRE 9
RAS ACT 28


Lower number = better performance.


Wow that actually makes a lot of sense. Leave it to computer engineers to design something... logical! I will change those numbers over. Thanks for all the help guys :) 
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a b } Memory
January 21, 2014 8:57:51 PM

LimitedWard said:
Alec Mowat said:
The first four numbers going down on the list match the four numbers on the sticker

So if the sticker says 9-10-9-28, than set the numbers down to
CAS 9
RAS to CAS 10
RAS PRE 9
RAS ACT 28


Lower number = better performance.


Wow that actually makes a lot of sense. Leave it to computer engineers to design something... logical! I will change those numbers over. Thanks for all the help guys :) 


If you wanted to overclock your RAM, you can lower these numbers.

If your 1866 RAM is only running at 1600, you can usually get away with lowering these numbers quiet a lot as well.

Lower frequency RAM generally has better timings. For example, my old SDRAM 133Mhz has timings of 2-2-2-10
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a c 2209 } Memory
January 21, 2014 9:10:29 PM

At 1600 might get 8-8-8-24, prob at best, AMD isn't known for a strong MC (memory controller), which is one reason they mostly top out at about 1866/9, where Intel CPUs can typically go to 2133 and upwards to 3000 DRAM
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