I have followed the following advice:
Manual Overclocking i7-920* Restart the PC*
Press F2 * Press F9* On the Load Optimal Defaults screen, press
the Enter key on Ok* Select CPU Configuration and press Enter*
Change Intel SpeedStep Tech to Disabled* Press the Escape key to
back to the main menu* Select Frequency/Voltage Control and press
Enter* QPI Frequency = Auto* Memory Ratio = 8 for 1067/1333MHz
memory. 10 for 1600MHz memory* XMP Support = Disabled for
1067/1333MHz memory. Enabled for 1600MHz memory* Select Overclock
Configuration and press Enter3.20GHz = 160, Enabled, Auto, 100,
Disabled, 26,25,25,25,110,130* Go back by pressing ESC and select
Overvoltage Configuration and press Enter3.20GHz = +20mv, Auto,
1.10v, Default* Press F10 to Save and Exit
Which was taken from the following thread: http://en.community.dell.com/forums/t/19310782.aspx
Two queries. 1) I cannot find any reference to "XMP Support" in the BIOS. 2) I cannot find any reference to the portion underlined and in bold here "* Select Overclock
Configuration and press Enter 3.20GHz = 160, Enabled, Auto, 100,
Could someone please clarify what these options are, why I don't seem to have them, and do they matter?
I overclocked my Aurora ALX automatically through the Bios option provided but I need to get my memory to 1333 instead of 1600 because every now and them the PC locks up and I determined that this is caused by the memory and it isjust not worth it.
How can I do this? If I change the Memory Ratio to 8 the speed changes to like 1280 instead of 1333. There is got to be another setting that I have to tweak.
Does anyone know how to do this?
If you are using the stock Dell 1066Mhz or 1333MHz RAM, the XMP option will not be available and is automatically disabled, so you do not have to worry about that.
In reference to the "160, Enabled, Auto, 100, Disabled, 26,25,25,25,110,130" , the 160 is the BCLK frequency, which would be set to 133MHz factory settings. "Enabled" is for the spread spectrum, "Auto" is for the PCI frequency, and "Disabled" is for the option right below the PCI frequency (cant remember what is was atm).
The numbers 26,25,25,25,110,130, are the turbo mode settings on the bottom of the same page as the ones listed above. You must enable speedstep and then enable turbo mode to see these options. You can enable speedstep by going into the "CPU configuration."
Alienware Aurora R4Intel Core i7 3930K16GB 2133MHz Corsair Dominator GT3GB AMD Radeon HD 7970SoundBlaster Recon3D Fatal1tyKiller 2100 NIC512GB Crucial M4 SSD19-in-1 Media Card ReaderBlu-ray Disc Combo / DVDRWW7 Ultimate x6423" Samsung S23A750D 1080P 120Hz
I never get the 26,25,25,25,110,130 numbers you mention. Also, if I get the BCLK frecuency to 133Mhz, the CPU is at its normal spped (2.66 instead of 3.20). It might be that the CPU has to be at the original speed in order to have the memory running at 1333Mhz.
I wish that Dell would come up with a better explanation on what every setting in the bios does or even better, a tutorial on the settings to get the CPU at 3.20 and the memory at 1333. (Unless those settings are unable to coexist)
You dont get those numbers because you do not have an i7 Extreme Edition CPU. Those should also be set automatically by the bios when you OC to 160BCLK.
The RAM will not run @ 1333 MHz. The reason that you need the 1333 MHZ RAM is because when you OC, the BCLK is multiplied by the Memory Ratio (divider) and gets you your RAM Speed. So, when you raise the BCLK to 160, your divider needs to be set to 8, which should equal 1280Mhz on the RAM. you cant set it to 10, because then it will run @ 1600. which the RAM is not capable of.
The RAM speed and the BCLK are basically tied together. You increase the BCLK, then so does the RAM speed.
To better understand all of this, you should read up on Overclocking a bit. If you do not know how to OC, or how OC'ing works, it is best recommended to not mess with anything, as you can damage your hardware if not done properly.
BClk=166,mem mult.=8. memory will be at or as close to 1333.
But when I do the auto OC, the memory sets itself at 1600 even though you stated that the memory is not able or capable to run at.
Do you undestand what I'm saying? The OC 1 does it by itself.
I truly thank you for your help! It was a lenghty explanation and I do thank you tremendously for your time and dedication helping me.
If you try to go beyond 160 BCLK, the system will probably become unstable, because the stock motherboard is honestly terrible for OC'ing. Also, Chris_M mentioned this as well.
Once you automatically select OC 1 profile, make sure to go to the Memory ratio, which is currently set at 10 from what you are telling me, and change it to 8, so it will run the memory correctly.
160 BCLK xl 10x Memory ratio = 1600MHz RAM. You cant run 1600MHz RAM. So we need to change the ratio,
Now if you were to switch it to 8x ratio for the Memory, it would be 160 BCLK x 8x Memory ratio = 1280MHz RAM.
So your RAM will be within its capable speed limits, and you will be able to POST properly.
Your RAM is Rated for 1333MHz or less, so you cant run it at 1600MHz. That 1600MHz is only for XMP enabled memory, and actually has a problem with resuming from sleep at the moment.
So basically, load the Level 1 OC, and change the memory ratio to 8, and you will be fine.
I'm a little confused. This is the report Dell included with the PC and it clearly states that the memory is running at 1600Mhz. I did pay more for the 1600Mhz memory when I ordered the PC. What do you think about this?
Again, thanks a lot for your help!
u can run 12 gb maxed on 1600 mhz, 24 gb max on 1333 mhz. and 6 gb only for 1866 speed.
The intl i7 chipset makes OC very easy.
You no longer have to make numerous adjustmentts to OC unless you are looking for the absolute max your system can handle. Then it is a matter of making numerous small changes until everything works together to work at the max.
You can, however, simply adjust the CPU BLCK in your BIOS and it will automatically increase the CPU, memory, and QPI values while automatically making all the necessary ratio adjustments.
The base BLCK setting is 133. Simply increase this number and everything else is OC. I would start of at 135, restart computer and check monitoring software. If this is where you want the system to run then stop there. If you want it faster, restart into BIOS and increase the BLCK value again.
Take this increase in BLCK value slowly and restart computer each time. At some point things will not work properly. Anything from failing to boot up completely to certain programs on your computer not working. when you get to this point, re-enter the BIOS and reduce the BLCK number to the last working value.
I would initially start by resetting the BIOS to default settings and then adjust the BLCK values.
Please could you send me a email with the instruction to upgrade my 4x4gb viper 3 patriot memorie to configure a this veloticy? I cant run more fast than 1866. Very thanks!!