DD3 Speed not correct on the BIOS

Asus Crosshair iv formula desktop mother...
June 17, 2010 at 10:02:21
Specs: Windows 7, AMD 2.8GHz
I've just purchased a new Asus motherboard, Crosshair IV. Along with the motherboard, I've also bought the new AMD CPU 2.8GHz with Kingston DD3 2 x 2GB (4GB total Memory) 2000MHz. For some reason, the motherboard picks up the DD3 as 1333MHz instead of 2000MHz. I've tried changing the settings in the BIOS for the correct speed but couldn't.

Could someone point out to to setup the DD3 correctly? Does it require overclocking? If so, how?

In case you need to know, I've installed Win7 64Bit.

Many thanks.

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June 17, 2010 at 10:29:36
the system specs isn't complete. U don't need ram to run @ 2000mhz if it's phenom the correct ram is 1066 if it's athlon 667 or 800.
another reason is the memory controller inside cpu don't support 2000mhz.

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June 17, 2010 at 10:52:32
The CPU is an AMD Phenom II x6 with an Asus Crosshair IV motherboard. The spec on the board say it can handle up to 2000 MHz.

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June 17, 2010 at 11:01:18
wut u mean the board wut does the spec on the cpu say ? the board can handle 2000MHZ but can the cpu handle it no
the amd phenom series can only reach 1066MHZ like kuwese said
and its not DD3 its DDR3.....
and by the way u have to fix ur ram speeds inside the bios

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Related Solutions

June 17, 2010 at 11:07:14
So, this is what I bought.. Should I have gone with the 1055 instead of the 1090?

True Multi-Core Technology
Processor: AMD Phenomâ„¢ II X6
Model: 1055T - HDT55TFBGRBOX
Core Speed (MHz): 2800
Wattage: 125 W
L3 Cache: 9MB
CMOS: 45nm SOI
Socket: AM3

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June 17, 2010 at 11:13:58
for me i see no need to change anything its all fine ur phenom has turbo cache thus the T in 1055T im not saying it sux its GOOD
and are u sure both ur ram sticks are configured correctly both set to 1333MHZ? cz if there are different settings then you do have a prob
my advice to u is to wait for the other guys in this forum advice and compare mine and theirs gd luck

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June 17, 2010 at 11:21:55
I didn't really see any major difference between the 1055 and the 1090 - besides the cores speed. I've changed the DRAM speed to 1600 from 1333 and that seems to have stabilized the system. Before it would randomly freeze up.

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June 17, 2010 at 12:21:21
"spec on the board say it can handle up to 2000 MHz."

Then it ought to be able to be set to that number.

Might there be a bios update that directly states this as a fix or change?

Could you have bogus ram?

I support the 'Everybody Draw Mohammed Day'. A religion doesn't deny my freedom.

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June 17, 2010 at 13:54:25
This is the DDR3 that I bought - Kingston:
4GB 2000MHz DDR3 Non-ECC CL9 DIMM (Kit of 2) XMP T1 Series KHX2000C9AD3T1K2/4GX

This should work - right?

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June 17, 2010 at 15:48:05
You should have done some research. The memory controller is integrated into the CPU, not the motherboard. While the board may support up to DDR3-2000, the CPU does not. The Phenom II Hex core only supports up to DDR3-1333 unless you overclock it.


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June 17, 2010 at 15:49:19
Below is a spec sheet on that RAM. What Kingston states is that the RAM meets JEDEC standards or 1.5V @1333. By juicing the chips to 1.65V they expect to run the RAM at 2000 with slower timings. So it is already overclocked.


When buying performance RAM you should look at the list of RAM that the board maker has tested and certified to be stable in that board.

What is the exact model of your motherboard?

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