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How to install DDR3-2000 RAM?

post #1 of 6
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Hello!
I just bought the Gigabyte GA-990FXA-UD7 990FX Motherboard and decided to go with an 8GB kit from A-DATA. This is the first time I use this brand and I really wanna see how it performs for its price.
The frequency of the Memory kit is 2000MHz.
The maximum frequency my UD7 motherboard will support is 2000MHz(O.C.).

But what does the OC mean? Probably "Overclock", but why? Will I run into problems when I just install the Memory in my motherboard and set the frequency to 2000MHz in the BIOS?

I've only been using 1600MHz RAM so far and that's why I have no idea.
If there's something to overclock for the Memory to run properly, how will I do it correctly?

Thanks in advance!
post #2 of 6
It wont support it natively, you gotta manually set the clocks.
    
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post #3 of 6
You'll have to increase the bus clock to run 2000Mhz at a certain multiplier. but the x6 should be able to do it.
post #4 of 6
Since you are currently running a Phenom, the max frequency RAM that it is able to handle would be 1333. With your 2000mhz modules you will have to set the RAM to 1333 in the bios and then up the frequency on the bus until you reach 2000mhz on the memory clock. This is what 2000(OC) means. Remember this though, since you are raising the bus frequency, this will also overclock your NB which will most likely require a boost in volts for it to be stable. The HT will also be overclocked, I believe that AM3/AM3+ boards should try to stick as close to 2000mhz on HT as possible. To keep the HT at 2000mhz you may need to lower the HT multiplier.

Hope that helped!
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T3k
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post #5 of 6
XD_1771...

Raise your fsb to 250 and set your ram to 8x.

This will also overclock your cpu, north bridge, and ht link. You may want to back those multipliers down to get them back to their stock clocks.

As far as your ram voltage, is there a sticker on the chips that tell you what it should be set too? Check AData's support site for this information or give me the model number and I can do it.

I will say this though, AMD chips are advertised to handle 1333, but I run 1600 as do several other people. You should benchmark the memory at 1600 and at 2000 to see if it is really helping. If it is not, I would suggest running it at 1600 and trying to tighten the timings instead.

HT Link is 2000 so 8x
Northbridge is 2000 so x8 although I would suggest overclocking this to 2600-2800 which requires a voltage increase to 1.30-1.35v and the correct voltage is CPU/NB not NB. You may even want to shoot for 3000 since your ram speed is so fast.
CPU, just change it to whatever multiplier matches the clock speed you are running.

Done! Enjoy!
 
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post #6 of 6
I made that comment yesterday during a time-constrained period.... you can't expect me to be always ready to provide all the details! I do appreciate that you've been able to fill them in for me though.

Likewise, now that I'm able to add on a few more details, you can use these bus clock/RAM multiplier combinations to attain 2000Mhz:
250, x8 multiplier
300, x6.66 multiplier
As BWG said, watch the multipliers of other things for sure. And be sure to run at rated voltage. 2000Mhz RAM is technically overclocked due to AMD IMC spec, but other users have proved that on a Phenom II x6, 2000Mhz is possible and manageable. The same can't be said for other AMD Phenom II chips.
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