Jump to content


Register a free account to unlock additional features at BleepingComputer.com
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.

Click here to Register a free account now! or read our Welcome Guide to learn how to use this site.


RAM 1866MHz Overclocking AMD Phenom II X6

  • Please log in to reply
1 reply to this topic

#1 l0uie12


  • Members
  • 8 posts
  • Local time:12:27 PM

Posted 24 July 2010 - 12:40 AM

AMD Phenom II X6 1090T Black Edition 3.2GHz
GA-890FXA-UD5 rev. 2.0 Motherboard
G.SKILL PIS Series 4GB (2X2GB) 240-Pin SDRAM DDR3 2200 (PC3 17600) F3-17600CL7D-4GBPIS
Window 7 Ultimate 64bit

Would anyone be able to explain to me how to run this RAM at 1866MHz? My motherboard specs show that I can reach DDR3 1866MHz as long as I use two memory modules and install them in DDR3_3 and DDR3_4, and that I have to overclock. They are both in DDR3_3 and DDR3_4 DIMM slots and they are brand new. The following link, http://www.giga-byte.ca/FileList/MemorySup...-890fxa-ud5.pdf, shows which brand/type of RAM my motherboard can run at 1866MHz. In this case I chose the G.Skill DDR3 2200, and to downgrade it to 1866MHz as it is listed in the link. I already updated my BIOS.

I’m sure I need help overclocking my CPU correctly so the RAM can operate at 1866MHz. Currently I cannot operate RAM above 1600MHz. I can set in the bios, but my system will not load windows if the RAM is above 1600MHz. BIOS has a Mem Clock with multipliers. If I set the CPU Frequency to 280, and the Mem Clock to x6.66 I receive 1866MHz, but my system will not open Windows, and instead I receive a BIOS message showing the BIOS defaults were loaded because Windows could not operate with BIOS changes I made, and the settings I changed are lost. If I set the CPU frequency to 233 and Mem Clock to x8.00 I receive 1864MHz, but still the OS will not load. I researched online and read “Dolk’s Guide to the Phenom II Overclockers Forum” found in the following link http://www.overclockers.com/forums/showthread.php?t=596023. I followed the instructions, but received constant errors, freezes, and BSOD. I also manually adjusted BIOS: CPU Clock Ration, CPU Northbridge Frequency, CPU Frequency, Mem Clock, NB Voltage Control, and the HT Link Frequency. Windows will not load anytime I change the CPU Frequency.

I guess I’m settings the BIOS incorrectly. What BIOS changes do I need to make in order to run CPU Frequency at 280 or 233 correctly? Please help.

Edited by l0uie12, 24 July 2010 - 03:03 PM.

BC AdBot (Login to Remove)


#2 l0uie12

  • Topic Starter

  • Members
  • 8 posts
  • Local time:12:27 PM

Posted 24 July 2010 - 01:09 PM

I finally got my PC to run stable with the following settings:
CPU Frequency: 3145MHz (Multiplier x13.5)
FSB: 233
DRAM: 1864MHz (instead of 1866)
CPU NB 1.30v
DRAM 1.70v
RAM Timing 7-10-10-28-T2 (this is what it shows for my RAM timing on manufacturer's site.)
Everything else is on AUTO.

Can anyone tell me if these settings/voltages seem safe for my PC or should download an application to monitor my CPU's temp?

Attached Files

Edited by l0uie12, 24 July 2010 - 01:13 PM.

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users