DDR5 128GB Ram with i9 13900k

[Scuzza]

There's lots of speculation online around pairing an i9 13900k with Z970 motherboard with 4x32gb 5600mhz DDR5 ram. 

I9 has dual channel support up to 128gb at 5600mhz, is there an issue with running the 4 sticks or is it better to run 2 sticks for 64gb? 

 

[Tan3l6]

Is there any specific program you need 128GB for? If not, then 64GB would probably suffice. Even 64GB is more than enough for any game. And that's why I'm asking is there any specific program the excessive RAM is for.

But 4 sticks is marginally faster than 2 sticks, though 2 sticks usually OC better and the difference in performance would again be marginal.

[Scuzza]

Just now, Tan3l6 said:

Is there any specific program you need 128GB for? If not, then 64GB would probably suffice. Even 64GB is more than enough for any game.

The build will be mainly for 8k video editing, more of a question of would it work? 

[Tan3l6]

6 minutes ago, Scuzza said:

The build will be mainly for 8k video editing, more of a question of would it work? 

Ah, then the RAM would perhaps come handy indeed. The 128GB should work anyway at rates speeds, but perhaps someone else has first person experience?
 

[A1200]

I run 128GB of DDR4 4000 on my i9 13900ks and 128GB of DDR4 3600 on my i9 13900k, which works without any issues. Can't speak for DDR5. Looking at when DDR5 came out vs. DDR4 I thought I would stick with tried and tested as early benchmarks didn't show a great deal of diference, but I haven't looked recently at benchmarks where presumably timing and clock improvements may now mean a performance improvement.

[Scuzza]

Ok great good to hear someone else running 4 sticks with a 13900k, was worried as it said dual channel, does this mean it will run 2 sticks on each channel? 

[A1200]

Yes that's my config - 4x 32GB - 2 for each channel.

[Scuzza]

https://uk.pcpartpicker.com/list/JMLTXy

 

This is my current build list

 

Anything recommend of changing? 

[A1200]

I am no expert but I felt more comfortable buying a 128GB kit instead of 2x64GB to ensure there is no possible issue with XMP. Others may tell you my concern is ill founded.

[A1200]

I would go 1000w min on the PSU as well. If that GPU needs an upgrade, you are going to find yourself needing more watts.

[SorryBella]

35 minutes ago, Scuzza said:

is there an issue with running the 4 sticks

DDR4? As @A1200 points out, its fine. On DDR5 though? Completely different sauce. Neither platform has a really good grasp at it even at the JEDEC recommended 4800C40 speed. If you really in need of DDR5 and high capacity the best thing you can do right now is to get the new 2x48GB sticks that are starting to roll out.

[Somerandomtechyboi]

Just go for a ddr4 4x32, ddr5 4 stick quad rank is complete shit atm not being able to run proper speeds

 

If you want more ram then that youll have to look at hedt like amd epyc, and those have much worse singlecore even if you get one of those es cpus that you can overclock

 

Ram speed is a non issue, just crank the imc volts and run ~4000 in gear 1, it helps if you get a micron 16gbit rev b based kit since those are very light on the imc. Gear 2 youll top out at around 4600-4800, too much imc volt over 4800 from what ive seen. max safe ~1.45v, risk of degradation if you go past that which i definitely would but im a madman that doesnt need the utmost of stability

[dilpickle]

Avoid 4 sticks of DDR5. You won't get XMP.