GA Z87X UD3H - 1886mhz Ram compatible?

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Gazownik

Gazownik

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Just a simpe question... I've bought a mobo from gigabyte GA Z87X UD3H and Ram sticks Crucial Ballistix 16gb(2x8gb) 1886 mhz and I don't really know if they're compatible with each other.... I've heard that the only option is to OC them..

Can someone give me a hint what to do?
 
Solution
barto
Let me do another example. So your motherboard supports a wide array of memory speeds (3000-1333).

If you bought the following set of modules, they would run a 1333 MHz. That is because your motherboard would recognize their speed and match it.
PCPartPicker part list / Price breakdown by merchant / Benchmarks

Memory: G.Skill 4GB (2 x 2GB) DDR3-1333 Memory ($47.86 @ NCIX US)

If you bought this set of modules, the motherboard would recognize the speed and run them at 1600MHz.
PCPartPicker part list / Price breakdown by merchant / Benchmarks

Memory: G.Skill Trident 4GB (2 x 2GB) DDR3-1600 Memory ($48.99 @ Newegg)

However, if you bought this set of modules...
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Hello man

Hello man

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Nope. Return the RAM. Get some 1600Mhz and O.C. it.
 
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Dom_79

Dom_79

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I'm pretty sure that motherboard supports over 1886MHz, you just need to set the XMP profile in the bios.
 
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Hello man

Hello man

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No Dom_79, if you look at the manufacturer specs, it says 1886 in the memory support specs, but has an (O.C.) next to it, meaning that you have to O.C. your 1600Mhz memory to do it.
 
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Dom_79

Dom_79

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Ah, well I thought that it would be set to 1886 with the XMP profile (it's an intel thing). So I guess if someone wants 3000 they just OC 1600 to 3000? I wonder why manufacturers sell high MHz RAM when all you need to do is OC 1600MHz to whatever you want.
 
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barto

barto

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If I may add, you never want to overclock memory beyond it's rated frequency. The 1866 OC doesn't mean you overclock a pair of 1600 MHz RAM to 1866. It means by default, the motherboard will run the memory at 1600 Mhz. You have to have a pair of modules that can run 1866 and overclock them from the default setting of 1600MHz. So yes, the motherboard supports 1866Mhz RAM when overclocked.
 
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Hello man

Hello man

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The not passing the rated frequency thing is the reason I guess. But by that logic, you should not O.C. RAM at all, because it would be passed the "rated frequency". That also means that you should never over clock your GPU RAM either.
 
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barto

barto

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Again, if your motherboard supports 2133 MHz and you bought 2133 MHz RAM, you could overclock the memory to that frequency without problem because they have been manufactured/tested to run at that speed. However, memory that is rated to run a 1333 should not be clocked higher than that because that's not how they were designed.

As for GRAM, be careful. GPUs are different entity alone. GPUs have ECC memory.
Good GPU OC discussion. http://www.tomshardware.com/answers/id-1687702/worth-overclocking-memory-gtx-680.html
 
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Gazownik

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So if my MOBO supports DDR3 3000(O.C.) / 2933(O.C.) / 2800(O.C.) / 2666(O.C.) / 2600(O.C.) / 2500(O.C.) / 2400(O.C.) / 2200(O.C.) / 2133(O.C.) / 2000(O.C.) / 1866(O.C.) / 1800(O.C.) / 1600 / 1333 MHz ...... then it isnt really a problem that I've got these Oc'd at 1866 ? Im confused lol , coz their frequency is 1866 but still i have to OC them to get 1866 >.> .... ? By default they're at 1333mhz or.... ?
 
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barto

barto

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Let me do another example. So your motherboard supports a wide array of memory speeds (3000-1333).

If you bought the following set of modules, they would run a 1333 MHz. That is because your motherboard would recognize their speed and match it.
PCPartPicker part list / Price breakdown by merchant / Benchmarks

Memory: G.Skill 4GB (2 x 2GB) DDR3-1333 Memory ($47.86 @ NCIX US)

If you bought this set of modules, the motherboard would recognize the speed and run them at 1600MHz.
PCPartPicker part list / Price breakdown by merchant / Benchmarks

Memory: G.Skill Trident 4GB (2 x 2GB) DDR3-1600 Memory ($48.99 @ Newegg)

However, if you bought this set of modules, your motherboard would by default run them a 1600MHz because that is how your motherboard was designed. You could then overclock this set to 1866MHz, which is the maximum rated frequency for those modules.
PCPartPicker part list / Price breakdown by merchant / Benchmarks

Memory: G.Skill Ripjaws X Series 4GB (2 x 2GB) DDR3-1866 Memory ($49.99 @ Newegg)

The same concept is applied to any other RAM modules you were to buy. Thus if you bought 3000MHz, your motherboard would automatically set the sticks to 1600Mhz. In order to achieve the rated 3000MHz frequency, you would have to go into the BIOS of the motherboard and overclock the modules to the desired speed.

Download CPU-Z and you should see the speed of your memory at 800MHz. The reason it's says 800 is because DDR stands for Double Data Rate. So simply multiply it by 2 and you have the current operational frequency modules (ie 1600MHz.)
CPU-Z: http://www.cpuid.com/softwares/cpu-z.html

softwares-cpuz-04.jpg

So the RAM in this picture is running at 1066MHz.

Functionally, there is nothing wrong with your purchase. Those sticks will work fine. As for performance, there is no gain from using faster memory.
 
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