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Old 03-21-2015, 08:30 PM   #1
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Default Finding out the speed (MHz) of RAM

Hello,
I am trying to calculate the speed of the RAM I have in my computer (6GB), so I know which RAM I need to buy. I know you need to have a program called CPU-Z, which I have already got, but I am not sure what I have to do to calculate the RAM.
When I got the memory tab in the CPU-Z program, it shows the following:


If someone could give me the calculation, or calculate it for me, and give me the calculation so I know for future preference.

Thanks in advance,
Unique
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Old 03-21-2015, 10:49 PM   #2
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Default Re: Finding out the speed (MHz) of RAM

Do you have DDR2 or DDR3? Just make sure that's always the same, any DDR3 is compatible with another DDR3 in most cases. It looks to me like you have 1600Mhz ram, I do not know if it's DDR3 or DDR2.
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Old 03-22-2015, 05:36 AM   #3
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Default Re: Finding out the speed (MHz) of RAM

Here in the UK and I note you are in the UK, we can use The Crucial website to automatically tell you how much RAM and what type you can use.

Welcome to Crucial UK GBP Store Organization

I have used this method extensively over the years with no problems although I do delete the scanner once it has done it's thing but that is just my paranoia.
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Old 03-22-2015, 06:24 AM   #4
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Default Re: Finding out the speed (MHz) of RAM

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Originally Posted by NikonGuy View Post
Do you have DDR2 or DDR3? Just make sure that's always the same, any DDR3 is compatible with another DDR3 in most cases. It looks to me like you have 1600Mhz ram, I do not know if it's DDR3 or DDR2.
In the picture it clearly states that its DDR3.
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Old 03-22-2015, 08:30 AM   #5
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Default Re: Finding out the speed (MHz) of RAM

Okay, so for DDR3 ram, I just do 800 * 2 = 1600mhz to get the speed of my RAM?

Thanks

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Old 03-22-2015, 09:49 AM   #6
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Default Re: Finding out the speed (MHz) of RAM

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In the picture it clearly states that its DDR3.
LOL I'm so blind
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Okay, so for DDR3 ram, I just do 800 * 2 = 1600mhz to get the speed of my RAM?

Thanks

Unique
No, you can buy different Mhz of ram. The ram you have is 1600Mhz, so you can buy one stick ( or 2 )of 1600mhz. See here: Amazon.com: Kingston HyperX FURY 8GB Kit (2x4GB) 1600MHz DDR3 CL10 DIMM - Blue (HX316C10FK2/8): Computers & Accessories

YOu can buy ram in many different speeds. They start around 800Mhz and ram can go up to 2666Mhz. HOWEVER, you need a really good motherboard that supports 2666Mhz, I assume your motherboard can only handle up to 1600Mhz, so that is what I would recommend buying.
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Old 03-22-2015, 11:45 AM   #7
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Default Re: Finding out the speed (MHz) of RAM

You need to keep things in mind for future upgrades:

1- Compatibility with the mother board/what the mother board supports.

2- Some problem don't show up often, but they are there, if you don't use the exact same RAM. Those problems could happen in some critical times. I used Kingstone RAM chips of the same speed and same, but different suffix, and problems happened only in heavy video gaming and after long times.

3- Some times no software can give you the real speed the RAM is capable of. Sometimes it cannot be reached without activating a special profile from bios. I suggest taking out the ram and read what's printed on it. Or if you can get the name from CPU-Z, search for that name.
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Old 03-22-2015, 05:00 PM   #8
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Default Re: Finding out the speed (MHz) of RAM

I over rate mine. if my board calls for 1333 I get 1600.
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Old 03-22-2015, 05:49 PM   #9
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Default Re: Finding out the speed (MHz) of RAM

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I over rate mine. if my board calls for 1333 I get 1600.
You're gonna cause problems like that lol. There is a reason they give it those ratings
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Old 03-22-2015, 06:43 PM   #10
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Default Re: Finding out the speed (MHz) of RAM

And how is that? I never had any problems.
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Old 03-22-2015, 07:16 PM   #11
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Default Re: Finding out the speed (MHz) of RAM

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And how is that? I never had any problems.
Doesn't mean you won't Maybe it'll shorten the life of your mobo, who knows.
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Old 03-22-2015, 07:45 PM   #12
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Default Re: Finding out the speed (MHz) of RAM

Are you nuts?

How does a higher rated memory gonna shorten the life of a board? It's just max speed without running into errors. That way I have a safe margin and also it allows me to set my memory to extreme mode.
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Old 03-22-2015, 07:53 PM   #13
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Default Re: Finding out the speed (MHz) of RAM

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Are you nuts?

How does a higher rated memory gonna shorten the life of a board? It's just max speed without running into errors. That way I have a safe margin and also it allows me to set my memory to extreme mode.
Lol I might be XD. I'm just curious why it would say the mobo can only do a certain Mhz if it would work fine without any problems? I think my mobo is rated for 2033, does that mean I could go somewhere like 2440 or whatever the next level is without problems ( Besides over heating ram lol )?
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Old 03-22-2015, 08:20 PM   #14
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Default Re: Finding out the speed (MHz) of RAM

Just because I have 1600 doesn't mean I'm running it at 1600.

Get it?
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Old 03-22-2015, 09:26 PM   #15
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Default Re: Finding out the speed (MHz) of RAM

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Just because I have 1600 doesn't mean I'm running it at 1600.

Get it?
ohhhh ok. But what if you did run it at that speed and it was over what the motherboard "allows"?
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Old 03-22-2015, 09:56 PM   #16
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Default Re: Finding out the speed (MHz) of RAM

Some BIOS will allow you to do that, it's called OCing the memory just like you would with the CPU. It's called XMS.

By the way, I'm running at 1600 on this board (just checked the BIOS) so the memory matched it. I bought this memory when I was running my i3 system (upgrade from 2x2 memory now 2x4) and that runs at 1333.

So all is good.
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Old 03-23-2015, 06:07 AM   #17
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Default Re: Finding out the speed (MHz) of RAM

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Just because I have 1600 doesn't mean I'm running it at 1600.

Get it?
Interesting idea, never really thought about it that way, I wonder if there've been any studies made to see how this affects the life of the component!

I guess it depends how hot it's designed to run, I suspect the 1600Mhz models are simply factory overclocked 1333 models, but I don't know for sure!

Looks like I know what my google project is for today
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Old 03-23-2015, 09:08 AM   #18
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Default Re: Finding out the speed (MHz) of RAM

I think they grade the memory chips the same way they grade the CPUs. They test them at speeds til it produce errors then back it down and mark it.

The advantage of over rating the memory (1600 running at 1333) is that you can tighten up the timings known as turbo or extreme mode in the BIOS.
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