RAM Detection Problem

[clonesauce]

Hi guys,

I'm using an Asrock 880GM-LE and previously used 2x2GB Corsair sticks. I upgraded RAM and bought 2x4GB Ripjaw sticks and replaced both Corairs, however my motherboard seems to have trouble detecting them on their own and my PC wouldn't boot. Just gave me 3 beeps, a pause then 3 beeps and repeat. I tried to swap the two Ripjaw sticks around but nada, then I tried mixing one of each module and only then my PC could boot. Is there anything keeping my motherboard reading the new sticks independently? I've already updated my bios but still no luck.

Thanks.

[MagicAndre1981]

check the list if the board supports your RAM:

http://asrock.com/mb/memory/880GM-LE.pdf

[Tripredacus]

When you say "one of each" you mean a 4GB and a 2GB and the system can POST? What is the part number on the Ripjaw stick?

[clonesauce]

When you say "one of each" you mean a 4GB and a 2GB and the system can POST? What is the part number on the Ripjaw stick?

Yes, one of 4GB and one of 2GB.Sorry, what do you mean by part number?

[dencorso]

Lenghten, by +1, all the memory's timings. This should get your system booting again. If not, try +2. The northbridge is being unable to cope with all that RAM using SPD's default timings.

[clonesauce]

Thanks dencorso, however upping the timings didn't work for me. My sticks work at my friend's motherboard. I wonder what's causing this.

[MagicAndre1981]

Have you check the PDF to see if the RAM is compatible?

[clonesauce]

Have you check the PDF to see if the RAM is compatible?

Thanks MagicAndre, I have checked it and yes it is. When I paired 1 stick from Ripjaw and 1 stick from Corsair, PC detects the memory and even lists it out as '6GB memory available'. I just cannot use the Ripjaws independently.

[dencorso]

Does this happen with either of the Ripjaws? If so, it seems your board cannot cope with 8 GiB...

Try upping the timings by +2 and setting command rate 2T... Also disable ram interleave, if you have that setting.

[Tripredacus]

Oh I see Ripjaw is actually G-Skill. Judging from pictures of others online, there is a white sticker on each stick and the part number appears to start with F3, at least in the example pics I saw.

[clonesauce]

Oh those numbers: F3-12800CL9D

[MagicAndre1981]

F3-12800CL9D is only listed with the 2GB RAM Modules, not the 4GB ones. So maybe the 4GB modules are not compatible if you use both.

[Tripredacus]

F3-12800CL9D is only listed with the 2GB RAM Modules, not the 4GB ones. So maybe the 4GB modules are not compatible if you use both.

http://www.gskill.com/products.php?index=222

Its a 4GB kit, which is actually 2x 2GB sticks.

[MagicAndre1981]

Its a 4GB kit, which is actually 2x 2GB sticks.

he said he has 2x4GB:

I upgraded RAM and bought 2x4GB Ripjaw sticks

[dencorso]

He actually said it twice, and the second time was anwering a direct question :

I upgraded RAM and bought 2x 4GB Ripjaw sticks and replaced both Corairs...

When you say "one of each" you mean a 4GB and a 2GB and the system can POST? What is the part number on the Ripjaw stick?

Yes, one of 4GB and one of 2GB.Sorry, what do you mean by part number?

Moreover the symptoms point very clearly, IMO, to a northbridge overwhelmed by too much RAM. It would be much more difficult to make sense of them were the new sticks the same size as the original ones.