Upgrading RAM Problem

leftypy

Prominent
Dec 30, 2017
7
0
510
Greetings from here. I've just created an account in this forum. It has helped me a lot before so I thought I'll give it a chance this time. I'm in a desperate situation, so I'm looking for help.
Please, keep in mind I'm not a tech savvy, also, English is not my main language, so some spelling errors may be visible, and I apologize for that.

The issue is this:
I'm upgrading my RAM from DDR2 to DDR3. And I'm getting what seems to be a famous "black screen" after making that upgrade. So no boot, no possible chance to get to BIOS, since the MB doesn't seem to get past the POST.

My specs are as follows:

Motherboard: https://www.asus.com/us/Motherboards/P5G41CM_LX/

Old DDR2 RAMs - 1 x 2GB + 1 x 1GB (3GB in total). They are working fine, I'll try and provide links if possible, they are quite old and I don't really remember.

New DDR3 RAMs - 2 x 4GB (8GB in total). http://www.corsair.com/en-us/cmx8gx3m2a1333c9
They may not be the exact same sticks I got, because I've linked this one from the official brand's website, but it's basically Corsair XMS3 (2x4GB) DDR3 1333MHz.

CPU: Intel Core 2 Duo E8400
GPU: AMD Radeon R7 360 (just listing, don't think it's important)
PSU: EVGA 500W (80+) Black

I've double checked on multiple websites for compatibility (before buying them), and they all showed those Corsair RAMs should work with my current MB.

Things to note:
- BIOS is updated to the latest version found on ASUS website
- I've tried removing the CMOS battery multiple times and doing a CLRTC (by changing the pins on the MB)
- I've inserted both RAM sticks individually into the DDR3 slots and powered on the computer, with no result. Same thing happened when I inserted both sticks at the same time (the MB has 2 slots).
- Changed the DRAM Frequency on the BIOS, from AUTO to 1111 Mhz (it does not show 1333 Mhz for some reason). I've actually checked every possible BIOS option (being careful not to do anything that can damage the MB of course).

I've tried almost every possible and findable solution, if it's not listed above, I may have just forgotten to type it. There are 2 theories about this, that I really don't want to accept:

1- The new DDR3 RAMs are faulty, which is really bad, since there's no possibility for a refund or anything, but the odds are quite low, since they're completely new. I have yet to test the memories on another computer, I just can't do that right now, might try it in the next few days, to discard this theory
2- The DDR3 slots aren't working, which is extremely rare, since I haven't put a single DDR3 memory before, those slots weren't used at all, and I cleaned everything before placing these new sticks, so there is no dust nor any other thing that can disrupt the slot.

I've had this MB since 2012, I know how it behaves, I just can't seem to find a solution. I believe the DDR3 memories do work, because if they weren't, the PC would not even power up or it would beep continuosly and not boot (that's how this MB seems to react to a faulty new component, it has happened to me before).

I want to believe I'm forgetting something important, and I really want to find an "easy" solution, since, like I mentioned, a refund is not possible, and I'd be spending too much money for nothing.

Any help is appreciated, and please mention if I forgot to type in something important in here.
Thanks in advance. Apologize for the sort of wall of text.

P.S: I forgot to mention, in case anyone wonders, I did not place the DDR2 RAMs and the DDR3 ones at the same time into the MB. I know that does not work and it can cause damage. I thought I'd mention that in case there's a misunderstanding
 
Solution
For a 4 GB module,8 ICs on each side for a total of 16 usually is low-density; 8 ICs on only one side is high-density. Manufacturers use the minimum number of components to build a module in order to keep costs as low as possible. Did you buy the kit locally? If so, then go back to the store with your PC and ask them to find a compatible kit.

Here's an example of a kit that won't work: https://www.newegg.com/Product/Product.aspx?Item=N82E16820239613 You can see that it only has 8 ICs. A poster tried them: https://forums.techguy.org/threads/ram-compatibility-problem.1124302/ Most replies were incorrect (reset the CMOS, update the BIOS, etc.) Once again, only low-density modules are compatible.

leftypy

Prominent
Dec 30, 2017
7
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510
Could you elaborate what "high-density" means? Is there a way to force the MB to make it work? I really don't want to lose these memories nor I have the money to buy something else
 
The only way is to buy a newer motherboard that supports high-density modules (usually 8 ICs on one side for a 4 GB module). Any socket 1155 or newer motherboard will be compatible, but you'll also need to buy a compatible CPU. It would be less expensive to sell the kit (or return it if you just bought it) and buy an older kit manufactured in 2011 or before or the G.Skill kit that I suggested.

I understand this is not the answer that you wanted, but you can't make an old chipset compatible with high-density modules.
 

leftypy

Prominent
Dec 30, 2017
7
0
510
Why would it show as compatible if it isn't? Quite sad.

Thanks for the reply. I guess this could be marked as solved. I'll see if I can return those RAMs (or sell them, since they seem to work and are unused).
 
I know that Corsair have it and several other kits on the compatibility list. Contact their support and ask if they are still using low density ICs like they did back in 2010 when it was released (http://www.baechler.ch/produits/memoires/corsair-ddr3-1333mhz-8gb-kit-of-2-ddr3-cmx8gx3m2a1333c9-3e86030d92f0f95fe8dc8be4d963691d.pdf). Without taking the heat spreaders off, can you see if there are ICs on both sides?

I had a similar issue with G.Skill that started using high density ICs, but they failed to update the compatibility list accordingly. They offered to swap the kit for the one that I linked, but I found a used kit identical to the new one, but it was built in 2011 and it had 16 ICs.
 

leftypy

Prominent
Dec 30, 2017
7
0
510


Can you tell me exactly what "IC" means? Because I only have a vague idea. And if I'm correct, I checked the sticks, and there seems to be ICs only on one side.
I'm just starting to notice this "density" stuff, and it's quite annoying that I couldn't possibly know that before buying them.

Thanks

 
If you check this compatible kit https://www.newegg.com/Product/Product.aspx?Item=N82E16820231422&recaptcha=pass the middle picture shows 8 ICs on each side of a module.

Since the kit delivered to you no longer matches the original 2010 specs and the site wasn't updated accordingly, you have a valid reason to return it. You can also contact Corsair support and ask them to exchange the kit for a compatible one (if they still manufacture one).

The switch to high density makes sense because it costs less to build a module with 8 instead of 16 ICs.
 

leftypy

Prominent
Dec 30, 2017
7
0
510
Hello GhislainG. Sorry if I'm bumping this thread, but I double-checked the ram, and there seems to be 8 ICs on one side, that's the only thing I could check without taking the heat spreader. I'm assuming there should be 8 ICs on the other side, even if it's not visible.

Also, I checked that my current CPU (E8400) has a FSB of 1333Mhz, shouldn't I be able to modify that on BIOS (OC a little) and modify the frequencies to match the memories'? (9-9-9-24 according to the tag sticked on them).

I'm really not losing my hope on this one, sorry if it's becoming annoying. And thank you for the reply.
 

leftypy

Prominent
Dec 30, 2017
7
0
510


Can't really tell, it's not visible, but if I saw 8 ICs on one side, doesn't that mean this RAM should be low-density? or am I wrong?. Oh, and, you're correct about the chipset.

As to why I chose DDR3... Well, DDR2 memories are either hard to find or quite expensive in here. Buying online is not easy for me so, I had to go with DDR3. Also, my MB only supports up to 8GB (and only up to 4GB per stick), so I got the max amount I could get, in order to continue to "improve" my PC. One of the current DDR2 sticks I have (the 1GB one) isn't even mine, it's borrowed, so I only own 2GB technically. I find an upgrade to be neccessary since I like to play video games casually, and my current setup is getting old for the current gen of games (And I bought RAMs instead of a new CPU/MB since they're the cheapest comparing to a new CPU/MB, but I will get those eventually, I hope)

Regards.
E
 
For a 4 GB module,8 ICs on each side for a total of 16 usually is low-density; 8 ICs on only one side is high-density. Manufacturers use the minimum number of components to build a module in order to keep costs as low as possible. Did you buy the kit locally? If so, then go back to the store with your PC and ask them to find a compatible kit.

Here's an example of a kit that won't work: https://www.newegg.com/Product/Product.aspx?Item=N82E16820239613 You can see that it only has 8 ICs. A poster tried them: https://forums.techguy.org/threads/ram-compatibility-problem.1124302/ Most replies were incorrect (reset the CMOS, update the BIOS, etc.) Once again, only low-density modules are compatible.
 
Solution

leftypy

Prominent
Dec 30, 2017
7
0
510
I understand now. Thank you so much for the help.
I'm in the process of returning the kit, and ask for a refund. Hope it works.

Thanks again.

In the meantime, I can say that Corsair XMS3 8GB (2x4GB) 1333Mhz is not compatible with P5G41C-M LX Motherboard, no matter what the internet says. I'm just leaving this out here in case anyone has the same issue.

Thank you again.