Memory Multiplier Problems

[Jamieee]

Hi,

I have had some problems with overclocking my E6400. I have 4gb's of DDR2 667mhz ram on a gigabyte ds3 motherboard.
My settings were as follows:

FSB:333
Multiplier: x8
System Memory Multiplier: 2.00
Memory Speed: 667mhz (according to MB)

I left all voltages at stock as this is a small overclock. According to my math, this is a 1:1 memory ratio. Upon reset the system failed to boot. I have no idea why, please help.

 

[amnotanoobie]

Have you tried:
- relaxing the memory timings?
- upping the core voltage?
- upping the NB voltage?
- upping the FSB some more (FSB-hole)?
- reading: http://www.tomshardware.com/forum/240001-29-howto-overclock-quads-duals-guide

 

[Jamieee]

At the moment i am not playing around with any voltages. When i put the FSB up to 333 the ram speed goes to 667(stock speed) and thats with a 2x multiplier. There is no lower option. With these settings it fails to boot even though the ram is within spec. I will maybe try the voltages but when the ram speed is set to the motherboard [Auto] setting it bring it up to around 810 mhz. I have yet to try this, but does this ultimately mean i will have to overclock under 333 FSB?

 

[amnotanoobie]

At the moment i am not playing around with any voltages. When i put the FSB up to 333 the ram speed goes to 667(stock speed) and thats with a 2x multiplier. There is no lower option. With these settings it fails to boot even though the ram is within spec. I will maybe try the voltages but when the ram speed is set to the motherboard [Auto] setting it bring it up to around 810 mhz. I have yet to try this, but does this ultimately mean i will have to overclock under 333 FSB?

With a 333FSB, you're making the Northbridge work harder. You and the processor may think that it's running at stock, but the NB isn't so happy about things and would probably want a bit more voltage.

 

[Jamieee]

I will try having a go at upping the RAM voltage and the northbridge. (or both)

Board: Giabyte 965P-DS3P
Memory: KVR667D2N5K2 2x1GB+2GB PC2-5300 CL5 no voltage recommendation. Its cheap crap value ram.

 

[Jamieee]

When the computer was first built it had 2gb of ram in dual channel. Some idiot decided to upgrade the computer by adding a single stick of 2gb ram. Oh well. Thanks for your help il be trying all of these things on Monday. Il keep you posted.