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Memclk Frequencies

post #1 of 11
Thread Starter 
Hello,

I am a nub when it comes to over clocking. I just started to get in to investigating settings in BIOS and discovered my RAM is running at a CLK frequency of 400MHz. Within Bios there is an option to change to 533 MHz but my ram is DDR2 1066... Shouldnt it be running at >533MHz? I then used AMD Overdrive to check out my specs and see if I am able to manipulate the frequencies and the Memory Clock drop down is grayed out @ 400MHz. I know that I am missing something and this all might be a very simple answer. Any help would be much appreciated. Let me know if you need more information on my Specs!


Mother Board:
http://www.newegg.com/Product/Produc...82E16813131595

RAM: 4X8GB
http://www.newegg.com/Product/Produc...82E16820231166
Edited by Latvija - 8/14/11 at 7:50am
post #2 of 11
Never use an overclocking utility to tweak settings in your bios. It usually doesn't end well and can be unstable. Go into your bios and manually set your ram speed to 1066MHz (533MHz in cpu-z) with the appropriate voltage and timings for the kit you are using. The computer should feel snappier and your load times should drop a little bit overall. Once the ram is stable at the standard speed, THEN you can start messing with overclocking.
post #3 of 11
Thread Starter 
See that is where I am confused. In BIOS I am not given an option above 533. I select Manual and it gives clk frequencies of 200 through 533. 800 or 1066 are not options....
post #4 of 11
200=400
266=533
333.5=667
400=800
annnnnd
533=1066
Since it is Double Data Rate (2),then 533 is 1066.

Don't forget to put the timings and voltage stated on the rams stickers though.

So that is 5-5-5-15 2T at 2v

You might want to help people helping you by filling out your system specs in User CP.

why does your link say 4x8? 4x2=8?

You may struggle getting 1066 if your motherboard's memory slots are fully loaded,

since the processor's Integrated Memory Controller will downclock the memory one notch/divider to 800 when all memory slots are filled.
Edited by MightyMission - 8/14/11 at 8:57am
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post #5 of 11
Thread Starter 
Soooo From what is says from the RAM Specs from Newegg and RAM stickers say 2.0 to 2.1V, I am all set for all the timings? All i need to do is change the memclk freq to 533?

Tech Spec(Newegg Info):
Speed: DDR2 1066 (PC2 8500)
Cas Latency: 5
Timing: 5-5-5-15



AMD Phenom II X4 955
Windows 7 (Build 7600)
CPU Arch : 1 CPU - 4 Cores - 4 Threads
CPU PSN : AMD Phenom II X4 955 Processor
CPU EXT : MMX(+), 3DNow!(+), SSE (1, 2, 3, 4A), x86-64, AMD-V
CPUID : F.4.3 / Extended : 10.4
CPU Cache : L1 : 4 x 64 / 4 x 64 KB - L2 : 4 x 512 KB
CPU Cache : L3 : 6144 KB
Core : Deneb (45 nm) / Stepping : RB-C3
Freq : 803.58 MHz (200.9 * 4)
MB Brand : Asus
MB Model : M4A785-M
NB : AMD 785G rev 00
SB : AMD SB700 rev 00
GPU Type : NVIDIA GeForce GTX 260
GPU Clocks : Core 626 MHz / RAM 1053 MHz
DirectX Version : 11.0
RAM : 8192 MB DDR2 Dual Channel
RAM Speed : 401.8 MHz (1:2) @ 5-5-5-15
Slot 1 : 2048MB (6400)
Slot 1 Manufacturer : G.Skill
Slot 2 : 2048MB (6400)
Slot 2 Manufacturer : G.Skill
Slot 3 : 2048MB (6400)
Slot 3 Manufacturer : G.Skill
Slot 4 : 2048MB (6400)
Slot 4 Manufacturer : G.Skill


PS: Thanks for the help. I also have the log from CPUz but wasnt sure if it was necessary to post. Just let me know if you need anything else
Edited by Latvija - 8/14/11 at 9:03am
post #6 of 11
Thank you!
now go into the bios and select your highest frequency ram choice (533) and increase the rams voltage to 2v
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post #7 of 11
Thread Starter 
Ok so I increased my RAM speed to 533 MHz and voltage to 2.01. With the RAM timings set to AUTO. Attempted to restart after settings and I got a RPC server error unable to login to windows... Restarted and was able to login. Then I ran CPUZ and blue screened... Now its running Start up Repair which wont do anything....I am now back in windows at least... Any suggestions on what I did incorrectly?

Oh yeah and didnt you know 2*3=5?

As for the comment on my MOBO downclock the memory... I was afraid this was the issue.

*LOL Windows repair removed CPUZ..
Edited by Latvija - 8/14/11 at 9:27am
post #8 of 11
Thread Starter 
Anyways Thanks again for the Help. After reinstalling CPUZ I havent had any blue screens My timings are on Auto... Do you have any suggestions?....EDIT just blue screened again while typing this.

AMD Phenom II X4 955
Windows 7 (Build 7600)
CPU Arch : 1 CPU - 4 Cores - 4 Threads
CPU PSN : AMD Phenom II X4 955 Processor
CPU EXT : MMX(+), 3DNow!(+), SSE (1, 2, 3, 4A), x86-64, AMD-V
CPUID : F.4.3 / Extended : 10.4
CPU Cache : L1 : 4 x 64 / 4 x 64 KB - L2 : 4 x 512 KB
CPU Cache : L3 : 6144 KB
Core : Deneb (45 nm) / Stepping : RB-C3
Freq : 3214.45 MHz (200.9 * 16)
MB Brand : Asus
MB Model : M4A785-M
NB : AMD 785G rev 00
SB : AMD SB700 rev 00
GPU Type : NVIDIA GeForce GTX 260
GPU Clocks : Core 626 MHz / RAM 1053 MHz
DirectX Version : 11.0
RAM : 8192 MB DDR2 Dual Channel
RAM Speed : 535.7 MHz (3:8) @ 5-7-7-20
Slot 1 : 2048MB (6400)
Slot 1 Manufacturer : G.Skill
Slot 2 : 2048MB (6400)
Slot 2 Manufacturer : G.Skill
Slot 3 : 2048MB (6400)
Slot 3 Manufacturer : G.Skill
Slot 4 : 2048MB (6400)
Slot 4 Manufacturer : G.Skill
Edited by Latvija - 8/14/11 at 9:33am
post #9 of 11
sorry my water pump cut out so temps shot up,a bit of a panic moment!
Right so go into bios and set your timings 5-5-5-15 2T and set the volts to 2.1v
you may find the motherboard automatic tuning isnt suitable for the memory you are using so you have to do it yourself.
The BSOD may be due to the motherboard tightening the timings more than the ram wanted to deliver at that voltage.
If you can't run at 1066 with all slots loaded then it may be wiser to go for 5-4-4-15 at 800
or if you are lucky 4-4-4-12 as AMD setups prefer lower latency than higher frequencies.
Alternatively you could drop 2 sticks of ram,unless you specifically need 8GB?
Edited by MightyMission - 8/14/11 at 9:53am
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post #10 of 11
Thread Starter 
Ok well then I will try using manual timings and see how that goes. As for the 8GB of ram i just upgraded from 4 for new up and coming games. Thanks again for a the help and timely responses!! I am sure I will be dickin around with this more but I am actually off to the Movies!

Also before I go another newb question.... 5-5-5-15 2T? Does it mean the following?

tCL : 5
tRCD:5
tRP: 5
tRAS:15
CMD: 2T
Edited by Latvija - 8/14/11 at 10:22am
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