Asus X99 Deluxe faulty ram slots?

[NumLock21]

I'm currently running on a Asus X99 Deluxe with just 2 (2x4GB) sticks of Crucial Ballistix DDR4 2400 ram. When I install the ram into the grey slots it will boot, but when Install it into the black slots it does not. I get a error code of 53 (Memory initialization error. Invalid memory type or incompatible memory speed). When I install 1 stick in the grey slot and the other in the black slot, the system will boot, but it only detects 4GB instead of 8GB.

 

[Suffokation]

Odd, I have the same issue on my X99 Pro.

[NumLock21]

Odd, I have the same issue on my X99 Pro.

So you install your ram into the black slots and it won't boot?

[Suffokation]

So you install your ram into the black slots and it won't boot?

Yeah, they are in the grey slots at the moment and there are no issues.

Apparently a lot of Asus X99 boards had this issue.

[NumLock21]

Yeah, they are in the grey slots at the moment and there are no issues.

Apparently a lot of Asus X99 boards had this issue.

Ok so grey slots work fine, but black slots don't. I think I might know what's going on now. But I can't confirm on it yet, going to try something out. Thanks for helping me out. 

[Rohit Jackdaw]

Try to arrange two more sticks from someone and try to boot with all 4 slots filled and see if all sticks are detected else the slot is defective. Also since he said many boards have this issue look for a bios update in ASUS' website. They might have fixed it.

[NumLock21]

Try to arrange two more sticks from someone and try to boot with all 4 slots filled and see if all sticks are detected else the slot is defective. Also since he said many boards have this issue look for a bios update in ASUS' website. They might have fixed it.

I ran only 1 stick of ram and tested out each slot individually and all of the grey slot works, while all of the black ones doesn't. Called up Asus on it and they say, there is nothing wrong with the board, it's just the way how the X99 chipset works. In order to use the black slots, all of the grey slots must be populated first. What that mean is with a total of 8 ram slots (4 grey + 4 black), all of the grey slot must have a stick of ram installed. When that's done, then the 2nd memory controller will turn on and let user installs additional ram into the black slots. This does not apply to just this board, but for other Asus X99 boards as well.

[Rohit Jackdaw]

I ran only 1 stick of ram and tested out each slot individually and all of the grey slot works, while all of the black ones doesn't. Called up Asus on it and they say, there is nothing wrong with the board, it's just the way how the X99 chipset works. In order to use the black slots, all of the grey slots must be populated first. What that mean is with a total of 8 ram slots (4 grey + 4 black), all of the grey slot must have a stick of ram installed. When that's done, then the 2nd memory controller will turn on and let user installs additional ram into the black slots. This does not apply to just this board, but for other Asus X99 boards as well.

If they said so then nothing to worry. Leave it till u are considering a RAM upgrade in future. Anyways thanks for bringing out this issue. I am hearing it first time now