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Old 10-02-2012, 06:06 PM   #1
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Default Corsair Vengeance 1600 Shows 1333mhz at BIOS

Hi everyone, I recently bought two Corsair Vengeance 4GB x 2, 1600MHZ, each one ... I installed them on my mobo MSI 990XA-GD55, but after I enter to the BIOS, it shows that these rams are 1333Mhz ...

I would like to use the whole frecuency of my new RAM or I wouldn't have changed my last memories that were 1333mhz ...

This is what it shows:

]

When I put the DRAM Frecuency to 1600Mhz, and Adjusted DRAM Frecuency makes 1800mhz, and when I use CpuZ, it shows that DRAM FRecuency is 900Mhz



Then, if I change the DRAM Frecuency to AUTO, it makes 1333mhz, and right down the Adjusted DRAM Frecuency makes 1499, the cpu Z shows DRAM Frecuency is 750 Mhz ...



I can't find any XMB stuff on the BIOS ... Dunno how it works, but I hope that with the info I've given you guys, you can help me so I can enjoy these Rams Thanks for reading and thanks for answering with solutions ....


Pc Specifications:

Cpu: Amd Fx-6100 Six Core Processor
Motherboard: Msi 990XA-GD55 MSI Global ? Mainboard - 990XA-GD55
RAM: Corsair Vengeance 4GB x 2 = 8GB (1600mhz)
HDD: Western Digital 500GB 7200RPM
SO: Windows 7 Home Premium 64Bits
Power Supply: Tr2 600w ThermalTake
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Old 10-02-2012, 06:42 PM   #2
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Default Re: Corsair Vengeance 1600 Shows 1333mhz at BIOS

I see "Current DRAM Frequency 1800MHz" I don't know I'm just pointing out what I saw.

If that was my computer I would default the BIOS settings, or use the clear BIOS jumper on the motherboard.

Anyone else?
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Old 10-02-2012, 07:18 PM   #3
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Default Re: Corsair Vengeance 1600 Shows 1333mhz at BIOS

That processor natively supports DDR3-1866.

Allow me to explain the nomenclature of RAM.

For example we have DDR3-1600.

DDR stands for double data rate and 3 is for type three.

The 1600 is the data rate, measured in MT/s or mega-transfers per second. Since this is double data rate, there are two transfers per clock. DDR3-1600 operates at 800MHz at the I/O bus.

You would have to go into your BIOS and manually set the parameters of the RAM so that it operates at rated speed.
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Old 10-04-2012, 05:18 AM   #4
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Default Re: Corsair Vengeance 1600 Shows 1333mhz at BIOS

Quote:
Originally Posted by OhSnapWord View Post
...You would have to go into your BIOS and manually set the parameters of the RAM so that it operates at rated speed.

This ^^^ is correct.


I am not familiar with the MSI BIOS. I've attached a screenshot of my own BIOS as an example.

There must be an option within your BIOS that will allow you to select the 1600MHz speed you desire.
Attached Images
File Type: jpg 121004050712.jpg (91.6 KB, 2 views)
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