RAM running at a low Frequency

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Szynergy

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Jul 24, 2013
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Hello there,
I recently benchmarked my system with 3D Mark and it showed me that my RAM was running at only ~900Mhz. I was surprised since it should run at 1866. I started up CPU-Z to verify it + to be sure Speccy too. This is what I got:
http://i.imgur.com/zdOGsii.png
[Edit: I restarted my PC and got this http://i.imgur.com/trpA2Am.png]
Since I am having performance issues in games like ArmA 3 and Skyrim I thought this was the cause.
My specs are:
INTEL i7-3770k
EVGA NVIDIA GeForce GTX 780
AsRock Fatal1ty Z77 Professional
Alpenföhn Matterhorn
Samsung SSD 840 Pro
Western Digital Velociraptor
16 GB Corsair Vengeance RAM (Corsair D316GB 1866-9 Vengeace rd XMP K4 COR (CMZ16GX3M4X1866C9R))
Corsair AX 860
 
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Hazle

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Oct 28, 2011
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ok. i just realized you're using all 4 modules. most, if not all, mainstream boards like the z77 only supports dual channel. when you're using up all the slots, you're using up more power, resulting in your system lowering the clock speed to maintain stability. it'd be a different story with a quad channel board like those for socket 1366 & 2011.
 
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Szynergy

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Jul 24, 2013
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How do I "unlock" the frequency?
I have a 860 Watt PSU it should easily deliver enough power to all 4 channels + on AsRock's website there was a list with tested RAM modules and this one was one of them.
 
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Hazle

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it's not about how good a PSU you got. it's about how the dual channel standards are built upon. you could get yourself a 2000W 80+ Platinum PSU, and it wouldn't change a thing.

if you mean OCing memory, i really have limited knowledge on that due to lack of interests, but what i do remember is this: turn on XMP in the BIOS. BUT this only applies to higher speed ram that's not supported by the chipset by default, i.e; if you got a 2133mhz kit & it's running at 1866, you turn on XMP, apply the appropriate settings at 2133mhz.

manual OCing is out of my league, but here's a guide. there's more you can search for: http://www.pcstats.com/articleview.cfm?articleid=1804&page=2

if you meant you want it to run at 1866mhz and have no interest to OC, not a chance, not with 4 sticks on a dual channel system, & not as long as the PC's stability is in jeopardy. i assume, there's a way to "override" it, but i wouldn't know it. one way i do know would work is if you sell/return that 4x4gb kit and get a 2x8gb kit if you're so insistent.

personally, i wouldn't worry a whole lot about it as long as it's stable and performs beautifully.
 
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Szynergy

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Jul 24, 2013
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Yeah, but it isn't running stable and performs beautifully. I can't run Arma 3 on low over 30 fps...on a 780. I am searching for the problem for a week now and I don't know how to solve it. I thought that the RAM was the issue but now... Only the Motherboard itself and the CPU remain for testing, but I am searching for a CPU benchmarking software to proof that the CPU lacks of power or that it doesn't and if it isn't the problem, how do I proof that the motherboard is it?

 
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Hazle

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Arma 3, like 2, is well-known to be a badly optimized game. many are saying it's more cpu dependent than gpu when rendering the graphics. if you want to troubleshoot your memory do this: remove 2 of your ram to run at 2x4gb. maybe you're right. maybe it's the memory, maybe the game wasn't optimized to run with all 4 slots used up. especially true if every other game runs fine.
 
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Szynergy

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Jul 24, 2013
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Well every game is running fine except for Assetto Corsa and its AI which is underperforming as well (CPU wise) and Skyrim which has stutters every now an then.
I'll try it anyway.
 
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