Memory Voltages?

[goodlockin]

i am overclocking my CPU to 3.4ghz this is the guide i followed. but i dont know what voltage i should set my ram to (DDR2 Voltage Control)..when i follow that guide my ram voltage flashed with a warning message saying i havnt set the voltage for it?? i dont know what voltage to set it to..any help please??



Core 2 Duo E6750 @3.40 GHz
CPU Frequency 3.40 GHz (+27.8%)
FSB 425 MHz (1700 QDR)
Core Voltage 1.3625
Memory Multiplier 2.00x
Memory Frequency DDR2-850 (425 MHz)
Memory Latency CL 4.0-4-4-12

 

[unclefester]

You didn't specify the make and model of the sticks you are using?

 

[goodlockin]

You didn't specify the make and model of the sticks you are using?

sorry they are DDR2 Corsair dominator 1GBx4 PC2-8500 1066mhz

 

[MRFS]

That RAM should run at 400 MHz (DDR2-800) using 1.8 V.

The higher voltage setting of 2.1 V is for the EPP #1 of 533 MHz (DDR2-1066).

Try starting out at 400 MHz (DDR2-800) at 1.8 V and
then install and run CPU-Z.

The SPD and Memory tabs will tell you what
the factory options are, and what speed
they are currently running at.


> Memory Frequency DDR2-850 (425 MHz)
> Memory Latency CL 4.0-4-4-12

The latter settings are pushing it a bit for 4 sticks.

The JEDEC #2 for our 2 x 2GB Dominators are 5-5-5-18-23 and
using an automatic overclock available on our ASUS P5W64 WS Professional
motherboard, at 416.8 MHz the BIOS automatically chose 5-6-6-18-21 timings:
2 x Corsair model CM2X2048-8500C5D (one matched pair of 4GB total).


> 1GBx4 PC2-8500 1066mhz

Whenever you are populating all 4 DIMM slots,
you are putting twice as much stress on the Northbridge
(Memory Controller Hub): try relaxing the RAM timings
by a notch or two, and also you should separately try
bumping up the NB Voltage (Northbridge MCH) a notch
or two, increasing the latter in very small increments.


Also, note that Corsair's factory specs are different depending
on whether you bought the kit with the memory module cooler
or not: 5-5-5-15 v. 5-6-6-18 at max rated DRAM clock of 533 MHz:

http://www.newegg.com/Product/Product.aspx?Item=N82E16820145256&Tpk=N82E16820145256

http://www.newegg.com/Product/Product.aspx?Item=N82E16820145197

By comparison, your 1GB DIMMs show 5-5-5-15:

http://www.newegg.com/Product/Product.aspx?Item=N82E16820145043


Thus, of these choices, 5-6-6-18 are the more "relaxed" settings.


MRFS

 

[MRFS]

> FSB 425 MHz (1700 QDR)

p.s. That RAM should have no trouble running at 425 MHz
thus resulting in a 1 : 1 "FSB : DRAM" ratio on your machine
(using CPU-Z nomenclature).

But, it would help us also if you would identify your motherboard:
every BIOS is a little bit different in the options it allows for
FSB and memory timings.


MRFS

 

[knotknut]

Well you started another thread..........
It would have been nice of you to post your OC results on your other thread after people helped you out. Nobody gets paid here, it is all gratitude. A little rub here and there goes along way, get it?

 

[goodlockin]

Well you started another thread..........
It would have been nice of you to post your OC results on your other thread after people helped you out. Nobody gets paid here, it is all gratitude. A little rub here and there goes along way, get it?

ahh sorry i havnt actually succesfuly done it yet ..im trying to find out more sorry about that i dunderstand you guys make an effort i apoligise for not posting the result...as the titile of this thread i followed your info but im stuck on the RAM voltage side of things. at the moment my MIT is flashing DDR2 overvoltage control which i dont know what to cahnge to.

 

[goodlockin]

That RAM should run at 400 MHz (DDR2-800) using 1.8 V.

The higher voltage setting of 2.1 V is for the EPP #1 of 533 MHz (DDR2-1066).

Try starting out at 400 MHz (DDR2-800) at 1.8 V and
then install and run CPU-Z.

The SPD and Memory tabs will tell you what
the factory options are, and what speed
they are currently running at.


> Memory Frequency DDR2-850 (425 MHz)
> Memory Latency CL 4.0-4-4-12

The latter settings are pushing it a bit for 4 sticks.

The JEDEC #2 for our 2 x 2GB Dominators are 5-5-5-18-23 and
using an automatic overclock available on our ASUS P5W64 WS Professional
motherboard, at 416.8 MHz the BIOS automatically chose 5-6-6-18-21 timings:
2 x Corsair model CM2X2048-8500C5D (one matched pair of 4GB total).

thank you for the info i shall give it a crack and see how it goes on. i hope it turns out well.

> 1GBx4 PC2-8500 1066mhz

Whenever you are populating all 4 DIMM slots,
you are putting twice as much stress on the Northbridge
(Memory Controller Hub): try relaxing the RAM timings
by a notch or two, and also you should separately try
bumping up the NB Voltage (Northbridge MCH) a notch
or two, increasing the latter in very small increments.


Also, note that Corsair's factory specs are different depending
on whether you bought the kit with the memory module cooler
or not: 5-5-5-15 v. 5-6-6-18 at max rated DRAM clock of 533 MHz:

http://www.newegg.com/Product/Product.aspx?Item=N82E16820145256&Tpk=N82E16820145256

http://www.newegg.com/Product/Product.aspx?Item=N82E16820145197

By comparison, your 1GB DIMMs show 5-5-5-15:

http://www.newegg.com/Product/Product.aspx?Item=N82E16820145043


Thus, of these choices, 5-6-6-18 are the more "relaxed" settings.


MRFS

 

[knotknut]

What does MIT say your memory MHz is?
What is the Mem voltage?

 

[goodlockin]

What does MIT say your memory MHz is?
What is the Mem voltage?

well my CPU-Z says its 533.3mhz

 

[knotknut]

Did you read Shadows thread?
http://www.tomshardware.com/forum/ [...] w=0&nojs=0
this is really easy to understand, well written.

the other link broke
http://www.tomshardware.com/forum/forum2.php?config=tomshardwareus.inc&cat=29&post=245679&page=1&p=1&sondage=0&owntopic=3&trash=0&trash_post=0&print=0&numreponse=0&quote_only=0&new=0&nojs=0


see next post

 

[knotknut]

http://www.tomshardware.com/forum/forum2.php?config=tomshardwareus.inc&cat=29&post=245679&page=1&p=1&sondage=0&owntopic=3&trash=&trash_post=&print=0&numreponse=0&quote_only=0&new=0&nojs=0#t1742852

Forget it ........link not working period.

 

[knotknut]

533.3 is fine...you are on auto

is your OC working for you?

 

[goodlockin]

Did you read Shadows thread?
http://www.tomshardware.com/forum/ [...] w=0&nojs=0
this is really easy to understand, well written.

the other link broke
http://www.tomshardware.com/forum/forum2.php?config=tomshardwareus.inc&cat=29&post=245679&page=1&p=1&sondage=0&owntopic=3&trash=0&trash_post=0&print=0&numreponse=0&quote_only=0&new=0&nojs=0


see next post

wow it ansers alot of questions but i was told to set my spd to 2.0 and that telling em to set it to 10?? whats the difference

 

[goodlockin]

gosh my head hurts im thinking overtime here maybe to much..i think im over thinking this. its easyier than it sounds but it looks hard to pull off. i will try now and see if it works. hmm one more thing how do i check what my ram is rated at voltage wise..aparently its 1.8 or something how do i know mine is?

 

[goodlockin]

wow yet again no luck my CPU clock does not change i cannot change it.. its either times 6 or 8 i cant go higher or lower. and as for my ram frequancy i cant change that either which i cant understand its not even highlighted its greyed out. ive disabled C1E, EIST and C.I.A 2 set pci to 100, SPD to 2.00D. and as for voltages i set the cpu to 1.3625, ddr2 overvoltage doesnt give me a 0.4v option min 0.5v and i don know what my ram is rated so not even sure what to change the voltage to. and apart from that i cant think of anything else i should do. if im missing anything out please let me know. sorry for the inconvenience.

thanks goodlockin. :S

 

[knotknut]

You need to ENABLE CPU Host Clock Control and change CPU Host Freqency from 333 to 400.
Try that first.
What does CPUID say you Memory Voltage is? Select the SPD tab.

.

 

[knotknut]

If you download Speed Fan http://www.almico.com/sfdownload.php and look in the lower left corner Vcore2 is the vltage you Mmryis actually running at.

 

[goodlockin]

You need to ENABLE CPU Host Clock Control and change CPU Host Freqency from 333 to 400.
Try that first.
What does CPUID say you Memory Voltage is? Select the SPD tab.

.

yes i have enabled it but its not highlighted ill give you a screen shot. http://img196.imageshack.us/img196/5095/67479217.jpg

 

[knotknut]

OK
@400Mhz 1.8v
@533Mhz 2.1v

Download Speed Fan. What is the voltage reading? (Vcore2)

Default voltage on your MB is 1.8v
If your Memory is at 533Mhz you will have to set System voltage control to manual.
Found in MIT towards the bottom.
Now DDR over volt control set to +.3v
This will give you Default 1.8v +.3v = 2.1v

Now go back and open Speed Fan and your Vcore2 should be 2.1v

 

[goodlockin]

OK
@400Mhz 1.8v
@533Mhz 2.1v

Download Speed Fan. What is the voltage reading? (Vcore2)

Default voltage on your MB is 1.8v
If your Memory is at 533Mhz you will have to set System voltage control to manual.
Found in MIT towards the bottom.
Now DDR over volt control set to +.3v
This will give you Default 1.8v +.3v = 2.1v

Now go back and open Speed Fan and your Vcore2 should be 2.1v

ok the vcore2 is 2.13v heres a screenshot http://img97.imageshack.us/img97/7867/26646348.jpg

 

[goodlockin]

no luck, no clue, no faith left...its just not working and i have no idea why..how depressing