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Ram Won't Run at Advertised Speed

post #1 of 9
Thread Starter 
Hello All,

I recently bought 2133 MHz memory from G. Skill. No matter what i do it will not run at 2133 MHz. But when set to 1866 MHz it runs perfectly. My processor is a Phenom II 960T and the motherboard is a Gigabyte 990FXA-UD7. Is the processor limiting the ram or is it defective. The Newegg page for the ram is http://www.newegg.com/Product/Product.aspx?Item=N82E16820231476

Thanks
Red Warrior
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Red Warrior
(13 items)
 
  
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AMD Phenom II X4 960T 3.0 GHz Gigabyte GA-990FXA-UD7 XFX HD 6870 Crossfire G.Skill Ripjaws X F3-17000CL9D-8GBXM 
Hard DriveOptical DriveOSMonitor
500 GB Segate 64mb Cache 7200rpm Samsung Windows 7 Ultimate X64 Legit Phillips 22in 720p TV 
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Generic POS Corsair HX850 Corsair Obsidian Series 800D Microsoft Intelimouse 
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post #2 of 9
AMD does not like to run much faster then 1866.wink.gif
The HedgeHog
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The HedgeHog
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Yes, lots of them. LN2  The smallest one I can get! Samsung 2333 HD 23" 
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post #3 of 9
^This. Should of done your research first. smile.gif
post #4 of 9
Thread Starter 
Thanks
Red Warrior
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X4 960T 3.0 GHz Gigabyte GA-990FXA-UD7 XFX HD 6870 Crossfire G.Skill Ripjaws X F3-17000CL9D-8GBXM 
Hard DriveOptical DriveOSMonitor
500 GB Segate 64mb Cache 7200rpm Samsung Windows 7 Ultimate X64 Legit Phillips 22in 720p TV 
KeyboardPowerCaseMouse
Generic POS Corsair HX850 Corsair Obsidian Series 800D Microsoft Intelimouse 
Mouse Pad
Wooden Desk 
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Red Warrior
(13 items)
 
  
CPUMotherboardGraphicsRAM
AMD Phenom II X4 960T 3.0 GHz Gigabyte GA-990FXA-UD7 XFX HD 6870 Crossfire G.Skill Ripjaws X F3-17000CL9D-8GBXM 
Hard DriveOptical DriveOSMonitor
500 GB Segate 64mb Cache 7200rpm Samsung Windows 7 Ultimate X64 Legit Phillips 22in 720p TV 
KeyboardPowerCaseMouse
Generic POS Corsair HX850 Corsair Obsidian Series 800D Microsoft Intelimouse 
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Wooden Desk 
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post #5 of 9
You can run the RAM at lower than its rated speed of 2133 MHz and try to tighten the timings.
 
HTPC
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HTPC
(8 items)
 
 
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i7-3930k MSI X79MA-GD45 Powercolor 7950 G Skill 
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Samsung 830 Swiftech Apogee XT Rev. 1 EK-FC HWLabs Black Ice GTX 240 and a Koolance HX-CU72... 
CoolingCoolingOSOS
MCP 35X and a MCP 350 Koolance 401x2 Opensuse 12.1 Windows 7 
KeyboardPowerCase
Ducky OCN with cherry blues Antec True Power New 650W Cooler Master CM690 II 
CPUMotherboardGraphicsRAM
i5-750 Gigabyte p55-ud2 GTX 430 G Skill 
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Samsung HD204UI Fedora 15 Corsair CX-430 Silverstone GC04 
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post #6 of 9
you can also overclock your cpu-nb, which will let you run the ram faster, but you'll have to mess around with your front side bus for that

I have DDR3 2000 that i run as 1600 with 7-7-7-20 timings
post #7 of 9

Phenom II x4 960T should be able to manage 2000Mhz (as with other Phenom II x6 IMC) though I think 2133Mhz is a push.  Just lower the timings wherever you are at and you'll get the same bandwidth/performance of DDR3-2133.

post #8 of 9
Your IMC won't run that fast frown.gif
Swag box m8
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Swag box m8
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7 x BL460c
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2500K Asus P8P67 Sapphire HD 5770 2x8GB Corsair 1333MHz 
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NZXT Phantom 
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Xeon E5520  Xeon E5520  BL460c G6 12GB ECC DDR3 
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post #9 of 9
Denebs will typically run up to ~1800 MHz. Thurbans typically up to ~2000 MHz. but every CPU/mobo/RAM combo is unique. An FX CPU will typically run up to ~2400 MHz. That being said there is a very small system gain from OC'ing DDR3 RAM or lowering latencies, because the RAM not a system bottleneck.
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