DDR4 RAM - Mixing Sizes

[Blade Runner]

I am building a workstation and plan to install 4 x 4GB Corsair Dominator Platinum @ 2666MHz in my motherboard which will be a ASUS X-99 Deluxe so it has 8 RAM slots.

My question is:- In, say a year or so, when DDR4 has hopefully reduced in price, would I be able to fit 4 x 8GB RAM sticks beside the 4 x 4GB? (Same make and MHz)

 

[RizeAllard]

Yes you will be able to use them, with no any performance loss (or if it will be as small you cannot recognize).

 

[tinytomlogan]

Yes you will be able to use them, with no any performance loss (or if it will be as small you cannot recognize).

Wrong.

Advise is if you want to run 8 sticks you have to buy an 8 gig kit.

Also IMHO anything less than 2800mhz is a cop out and youd have been better off staying with DDR3.

Youre not meant to mix even the same kits bought seperately let alone different capacities and the memory modules will likely be different too

 

[KING_OF_SAND]

Wrong.

Advise is if you want to run 8 sticks you have to buy an 8 gig kit.

Also IMHO anything less than 2800mhz is a cop out and youd have been better off staying with DDR3.

Youre not meant to mix even the same kits bought seperately let alone different capacities and the memory modules will likely be different too

That's a bit exaggerated don't you think? I have mixed plenty of different sizes and brands, hell even speeds. The chances that you would run into an issue is small. If you mix different speeds the memory clock just drops to the lowest denominator. From a performance stability stand point yes you would want to preferably use all the same memory from ONE box because they most likely came off the same assembly and will offer the better luck for long term performance stability and overclocking.

Over all my 2 cents are it isn't going to hurt anything, but if you want overclocking stability and less chances of failure get the amount of memory you want from one box. So if you want 32GB get a box with 32GB of memory.

 

[Blade Runner]

Wrong.

Advise is if you want to run 8 sticks you have to buy an 8 gig kit.

Also IMHO anything less than 2800mhz is a cop out and youd have been better off staying with DDR3.

Youre not meant to mix even the same kits bought seperately let alone different capacities and the memory modules will likely be different too

Thanks for the reply, I have had a bit of a change of plan, I have just ordered the X-99-E WS version and that will take 128GB of RAM which I would have to sell my house to fill the slots with at the moment

I do like things to be right though, so I am taking your advice and just buying a set of 4 x 4GB for the moment @ 2800MHz! and will sell these next year when I buy the full 128GB in one batch.

Just also want to say how much I like your site and videos, love the detail, all the best.

Blade

 

[tinytomlogan]

That's a bit exaggerated don't you think? I have mixed plenty of different sizes and brands, hell even speeds. The chances that you would run into an issue is small. If you mix different speeds the memory clock just drops to the lowest denominator. From a performance stability stand point yes you would want to preferably use all the same memory from ONE box because they most likely came off the same assembly and will offer the better luck for long term performance stability and overclocking.

Over all my 2 cents are it isn't going to hurt anything, but if you want overclocking stability and less chances of failure get the amount of memory you want from one box. So if you want 32GB get a box with 32GB of memory.

Its different with DDR4 - thats direct from what I got told by Corsair a week ago

 

[KING_OF_SAND]

Its different with DDR4 - thats direct from what I got told by Corsair a week ago

That sounds like a problem then.

 

[Blade Runner]

Just one more question, I know The Guvnor said not to get anything less than 2800MHz but I am not planning on overclocking. This will be my main work computer and I need it to be as near to 100% reliable as possible.

With that in mind, would I be better getting some of the 2133MHz server type DDR4? Not very pretty I know but I can sort that out with a bit of work.

 

[tinytomlogan]

That sounds like a problem then.

They didnt just send me a £1200 64GB kit for nothing...... I only asked for another LPX kit!

Just one more question, I know The Guvnor said not to get anything less than 2800MHz but I am not planning on overclocking. This will be my main work computer and I need it to be as near to 100% reliable as possible.

With that in mind, would I be better getting some of the 2133MHz server type DDR4? Not very pretty I know but I can sort that out with a bit of work.

Running 2800mhz means the CPU wont be at stock but you should be fine. Just enable XMP in the BIOS

 

[Blade Runner]

They didnt just send me a £1200 64GB kit for nothing...... I only asked for another LPX kit!



Running 2800mhz means the CPU wont be at stock but you should be fine. Just enable XMP in the BIOS

Thanks again.