Sign in with
Sign up | Sign in
Your question

Cannot get ram to run at 1066mhz

Tags:
  • Memory
  • RAM
Last response: in Memory
Share
April 8, 2010 9:50:04 PM

I have 2x1gb of Kingston HyperX PC2-8500 ram but it only runs at PC2-6400. I went into the BIOS and changed the timings to 5-5-5-15 and the DRAM voltage from 1.8v to 2.2v as the ram sticker specifies. However in the BIOS and in CPU-Z it still reads at PC2-6400 with a DRAM frequency of 400mhz and shows the voltage still at 1.8v??. Why isn't it 1066? My timings changed from 5-5-5-18 to 5-5-5-15 but the frequency and voltage is the same according CPU-Z :heink:  What else do I need to change?







Specs:
Gigabyte EP45-UD3L LGA 775 motherboard (rev 1.1)
Intel Core 2 Quad
Q8300 stock
2gb Kingston HyperX PC2-8500
Visiontek ATI Radeon 3870 512mb GDDR4
250gb Western Digital Caviar Blue 16mb cache 7200rpm
Windows 7 Home Premium 64bit
Antec Basiq BP550 550 watt modular PSU

More about : ram run 1066mhz

April 8, 2010 10:04:45 PM

You will need to manually change the FSB : DRAM multiplier in your BIOS to change the frequency. There should be an option to do so in the same place you would change the cpu's frequency.
m
0
l
April 8, 2010 10:36:32 PM

what would I change it to exactly? sorry i'm kind of new to building pc's do you mean the 5:6 thing? where in the BIOS would that usually be i'm looking for the setting but cant seem to find it maybye i'm blind
m
0
l
Related resources
April 8, 2010 11:52:01 PM

I tried to raise the MCH core from 1.1v to 1.2v to see if it makes a difference still nothing. I really need some help here :ouch:  I don't want to screw something up that is why i'm asking for clarification. The only things in my BIOS that I can change is the SPD or my (G)MCH frequency latch. Which should I change and to what should I change it too?? I already raised my DRAM voltages MCH voltage and manually set timings and it still will not go to 1066mhz :fou: 
m
0
l
April 9, 2010 6:20:04 AM

In MB Intelligent Tweaker, you need to find the System Memory Multiplier and change it to 5 : 8 or 3.2.
m
0
l
April 9, 2010 4:31:15 PM

In my BIOS there aren't ratios though there are like numbers like 2.00D 2.00B 3.00ABC etc. What should I choose? this is very confusing sorry
m
0
l
April 9, 2010 4:38:11 PM

Alright so my CPU host clock control - currently have this on 333 so would I change my system memory multiplier to 3.2C? If I remember correctly FSB * memory multiplier = memory speed so if C is for 333FSB I should change to 3.2C which would be 3.2*333 which equals 1066?
m
0
l
April 9, 2010 10:29:47 PM

Yes, 3.2 is what you want as the mem multiplier. Make sure you run memtest to make sure its stable after you increase the frequency; DDR2 1066 tends to be finnicky, even under the manufacturer's specs. You may need to up the DRAM voltage if it is unstable.
m
0
l
!