Memory Issues

I'll be offline for ~6hrs approx

I welcome other support replies too, but I'm positive I can work this out on my own too, with you

Kimsland your advise has been spot on mate. I have tried inserting the 2 512Mb sims, fine on there own and when paired. But when i insert the other 2 1Gb sims the bios begins to post and then fails and requires a CMOS reset and the 2 other 1Gb sims removed to post again. Asus has been no help what so ever. Tekheads where i purchased the board sujested a bios upgrade(I have never herd the like. If that dont invalidate your warenty i dont know what does!). Dione that same result. Im going to try contacting Kingston and see what they say. Untill then any other thoughts on the matter would be great. Obviusly i need to get this working on a 32bit OS before i purchase a 64bit OS.

Yes RMA the motherboard if it's under warranty
For some reason (possibly power distribution related), the board does not seem to be able to accept 4 Ram cards.

To fully prove this, you would need to take the 1Gig cards out of the equation fully
Do you happen to have another couple of Ram cards?

No but now that you bring up power i only have a 570W Pro PSU Duel Fan. The power conector on the board is 8pin conection but the power lead coming from the PSU has only a 4 pin conection that is inserted in to the 8pin conector leaving the 4 pins on the left unused on the 8pin conector. I was assured when i purchased the board that this was fine. I have full CPU funtionalaty and dont seem incur power shortages. Sandrasoft reports that the power is fine. What do u think could this be the cause of my memory compatability issue? When i run the power rating program at ASUS.com it reports i have sufficent power.

Just sufficent power with only around 50W to spare.

Damn!

Yes I believe it is the PowerSupply

About 95% agree !!!

Please purchase (or borrow) another PowerSupply that has the full 24pin plug and 4pin CPU plug, and Sata power too.

the PSU is 24pin the connection im refering to is the ATX12v located 5cm in on the upper left hand corner of the board(in between the heat pipes/sinks. And the 4pin conection that goes into the 8 pin conecter leaving 4 pins unused on the left of the 8pin conector does indeed supply 12v. I agree it could be that the power, but could this really disable or only supply power for 2 of the sims. I have never had any power issues.

I mean you would think that if there was any power issue Nvidia Sentinal would repot it considering that my GFX card is the most power hungry component of my rig(Asus EN9600GT)

Hangon, which power pins again, I've just gone blank

Maybe post a pic from the web somewhere (too busy to look it up right now)

This is the power conector that has the 4pin 12v conectror inserterd leaving 4 pins open on the left but still supplys 12v

Why wasn't I informed of this new update to motherboards? (um this is a stupid retorical question, don't answer)

Well the 4 Pin is power to the CPU
What's the 4 for? I'll have to check it out (and update myself, probably came out years ago no doubt!)

Meanwhile, please find another 24 Pin + 4 pin Power Supply (I still think it's this even though.)

That should be fine the way it is in terms of the connectors but what brand is your PSU? Sounds like a Trust PSU to me.

Have you checked that you have the memory voltages set correctly in the BIOS.

This is where i really dont know what to do. How will this some how enable me to insert the other 2 1gb sims If i cant get the bios to post with 4 sims inserted? What do i change the memory voltages to? Can i blow my board/memory if i set it to high or incorectly? What is CAS latency and memory timings? As to my PSU i blew one recently and had to get this £40 piece of crap, yes its made by Trust. I include my CPU-Z data incase that can help.

when u bought the memory it should have been stated. if the mem came with any instructions it should be on that paper.

The RAM came in a sealed plastic cases, yes there is a pamphlet but the only instructions on this are pictorial and on how to insert/remove the RAM.

Ok i have had a call from someone from Kingston Technology, This chap seems to think that its the onboard chipset of the memory that my board has a problem with(KTC 99U5316-010.A00LF). So i think that i will return it to them and hope that the new memory sims work this time. Can anyone tell me more about how the onboard chipset of the memory sims is relavent to this problem. I thought DDR2 memory was compatable with all DDR2 boards?

No they're not !

I've had exact same specs as stated by what the board can take, and the Ram just will not work
This is where the Manufacture of the Motherboard, state which Ram has been fully tested in their Motherboard.

Why is this so?

There's also a unique code in the Ram, to identify it to other hardware (just as all hardware has) I believe that this static address area has been expanded over the years, with more and more information added to it. Thus causing conflict

But I really don't know??

Just that, not all Ram suit all computers (even with same spec and voltage rating)

Lol, this topics gone all over the place. From being the power supply, to updates, to being the memory lol.

It is difficult at times to find the answer

Especially when the fault is in the Programming of the Brand New Working Ram
I'd say it should be recall on them myself

Apparently, the 'fix' is to run the 4 modules at 677 Mhz with 4-4-4-15 timing.

ref: http://72.14.205.104/search?q=cache...SLI 4 Gb ram problem&hl=en&ct=clnk&cd=3&gl=ca