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Memory problem on Gigabyte GA-G33-DS3R

Forum Motherboards & Memory : Memory - Memory problem on Gigabyte GA-G33-DS3R

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septimium   06-08-2008 at 05:35:37 AM

Hello,

 

I recently built a new configuration as follows:

 

CPU: Intel Core 2 Duo E4600 2.4 GHz
Motherboard: Gigabyte GA-G33-DS3R
Ram: Two sets of Corsair 2x1024-C6400-C4 (4 x 1GB dim; 4-4-4-12, 2T, 2.1 v, 800 mhz FSB)
Graphic card: ATI Radeon HD 3870, 512 MB DDR3

 

The memory fails dramatically on memtest, but this only occurs when the 4 dims are installed. I tryed every memory separately, then in groups of 2, groups of three, using all slots. The modules have also been tested by my local retailer and the same result: memory modules are ok, motherboard is ok. If i put the 4'th module in it fails. I tryed almost all settings i could imagine in BIOS but it still fails.

 

I may add that i don't want to overclock, i just need this damn system to work.

 

Can someone please help me?

 

Here are my bios settings:

 

http://beta.softworx.ro/scr2.jpg

 

http://beta.softworx.ro/scr1.jpg


Message edited by septimium on 06-08-2008 at 05:41:43 AM
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knotknut   06-08-2008 at 06:02:58 AM
- 0 +

Increase Voltage and loosen timings to +.4v and 5-5-5-15 run mentest again.

Message quoted 1 times
Reply to knotknut
septimium   06-08-2008 at 06:09:56 AM
- 0 +

knotknut wrote :

Increase Voltage and loosen timings to +.4v and 5-5-5-15 run mentest again.



Tried that but it still fails at INVC and STRIDE 6 tests.

Reply to septimium
septimium   06-08-2008 at 06:14:23 AM
- 0 +

I don't get that many errors now since i made the new settings you suggested but it's still enough to crash Vista 64 into the nice BSOD.

Reply to septimium
septimium   06-08-2008 at 06:17:30 AM
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Can the cooling be an issue? I mean i don't have any other coolers than the CPU's, the graphic card's cooler and the power supply coolers (2).

Reply to septimium
knotknut   06-08-2008 at 06:24:04 AM
- 0 +

Go a little more. add another .1v and 5-5-5-18

4 sticks is more of a load on your MB than 2x2GB would have been.

Reply to knotknut
rgsaunders   06-08-2008 at 06:35:52 AM
- 0 +

Stock voltage for that ram is 2.1V, which is what you currently have your memory voltage set to. Bump it up at least another .1V.
The mobo default voltage for memory is 1.8V, so your +3 setting is resulting in 2.1V, which is probably why you are having problems with 4 sticks installed.

------------------------------ Never under estimate peoples capacity for stupidity, and you won't be disappointed.
 Reply to rgsaunders
Mondoman   06-08-2008 at 07:41:42 AM
- 0 +

The memory voltage is fine at 2.1V, although you can try 2.2V (no more!). The problem is that 4 sticks is pushing the limits of unbuffered memory technology; try boosting the MCH (memory controller) voltage by +0.1V.

------------------------------ e2160@3GHz: OCing my way to Ubuntuland!
 Reply to Mondoman
Zorg   06-08-2008 at 08:12:42 AM
- 0 +

^ I agree, but it may not help. I have seen more than a few people have trouble with 4 sticks.

 

You might also try lowering the speed to 667.


Message edited by Zorg on 06-08-2008 at 08:15:06 AM
Reply to Zorg
Mondoman   06-08-2008 at 08:17:41 AM
- 0 +

Yes. If the MCH voltage boost doesn't work, sept may have better luck by instead buying some *standard* DDR2 memory (rated at 1.8V) and using that instead. There's also the good choice of buying & using just 2x2GB modules.
sept - you might also ask for help on the excellent Corsair support forums (www.asktheramguy.com).

------------------------------ e2160@3GHz: OCing my way to Ubuntuland!
 Reply to Mondoman
rgsaunders   06-08-2008 at 10:41:47 AM
- 0 +

The advice to try "standard" 1.8V memory is good, I am running 4x2GB A-Data DDR2800 on an EP35-DS3R rev 2.1 at 2.0V although it appeared quite stable at 1.9V.

------------------------------ Never under estimate peoples capacity for stupidity, and you won't be disappointed.
 Reply to rgsaunders
septimium   06-08-2008 at 04:08:38 PM
- 0 +

Thank you guys for all the replies. Tried raising the MCH, also lowered the FSB, still no luck. I will consider changing these dimms with 2x2GB but before that i'm ready to experiment a little bit more with these i have right now.

Reply to septimium
septimium   06-08-2008 at 04:35:33 PM
- 0 +

Here is a configuration i just made and memtest works for an hour (3 memtest pass) whitout an error:

FSB: 667 MHz
FSB Voltage: +0,1 v
DRAM Timings: 5-5-5-15 2T
DRAM Voltage: 2,2 v
Memory controller: +0,1 v

After pass 5 it failed. I start believing this is because of a bad system cooling.

Message quoted 1 times
Reply to septimium
Shadow703793   06-08-2008 at 04:41:11 PM
- 0 +

Take off the +.1v on the MCH.

Message quoted 1 times
------------------------------ http://farm3.static.flickr.com/2617/3815217176_0a5be7955d_o.gif
http://farm4.static.flickr.com/3553/3818083596_1a772f7162_o.gif
 Reply to Shadow703793
septimium   06-09-2008 at 12:54:31 AM
- 0 +

Shadow703793 wrote :

Take off the +.1v on the MCH.



Did that, no luck, i get thousands of errors.

Reply to septimium
Mondoman   06-09-2008 at 08:23:28 AM
- 0 +

septimium wrote :

...

After pass 5 it failed. I start believing this is because of a bad system cooling.


No, you're close but not quite there (unless you are seeing very high temps somewhere).

------------------------------ e2160@3GHz: OCing my way to Ubuntuland!
 Reply to Mondoman
septimium   06-09-2008 at 03:06:17 PM
- 0 +

I tried almost all possible settings. I'm running out of possibilities :)

Reply to septimium
Shadow703793   06-09-2008 at 09:27:58 PM
- 0 +

What are the temps?

------------------------------ http://farm3.static.flickr.com/2617/3815217176_0a5be7955d_o.gif
http://farm4.static.flickr.com/3553/3818083596_1a772f7162_o.gif
 Reply to Shadow703793
Mondoman   06-09-2008 at 10:02:08 PM
- 0 +

Try setting the MCH to +0.2V

------------------------------ e2160@3GHz: OCing my way to Ubuntuland!
 Reply to Mondoman
thebignut   08-27-2008 at 12:04:40 AM
- 0 +

MCHes have an internal mechanism that regulates the strobe scew according to the temperature of the chip. Under very specific test conditions that includes a combination of low MCH core voltage, high
temperature and slow silicon you can get Timing Marginality on the Receive Enable. As suggested previouly setting the DIMM rail to +0.2V and providing better cooling to the MCH should correct your issue. The power consumption when using all 4 DIMMs will increase by about 0.75W per DIMM. So you are looking at 3W for 4 DIMMs.

You may also want to check the actual voltage on your DIMMs when you have 1 and 4 installed so see if you have a load issue.

Also check that the MCH Heatsink clip is seated correctly. If it is lopsided that will for sure cause thermal issues.

You may have to get an additional CPU fan and mount it to the MCH.

Reply to thebignut
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