Suggested DDR5 specs for an i7 12700K?

Blade-Runner

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Feb 25, 2013
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So after holding off on upgrading my aging decade old build to wait it out for the next GPU cycle, all things being equal I am gravitating towards Alderlake unless Ryzen 7000 impresses.

In speccing out the build I have initially chosen a G.Skill 32GB DDR5 Trident Z5 C36 6000MHz kit (naturally thinking the faster the better), but given it is hideously expensive I am wondering whether the increased bandwidth over say a C36 5600Mhz or even a C40 5200Mhz kit is worth the cost.

Would appreciate any thoughts from the resident gurus.

 

thedream829

Weaksauce
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Jul 22, 2021
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Niner21

Limp Gawd
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I had a Z690 Master and a kit of Aorus DDR5 6000mhz memory. I seen no benefit going to DDR5 from DDR4 which I ran previously in an Elite AX DDR4 board with my 12700K. After getting memory errors that I couldn't really point to if it was the board or the memory I sent both back and went with DDR4 again. Just my .02.
 

Spicedaddy

n00b
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Nov 28, 2012
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I have G.Skill Trident Z5 5600C36 with 12900K/Asus Z690 Hero, works perfectly. I went safe as this runs at 1.2V while the 6000 is 1.35V.

DDR4 is a more reasonable choice, but if you don't upgrade often then maybe DDR5 is a better option.
 

chameleoneel

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Aug 15, 2005
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So after holding off on upgrading my aging decade old build to wait it out for the next GPU cycle, all things being equal I am gravitating towards Alderlake unless Ryzen 7000 impresses.

In speccing out the build I have initially chosen a G.Skill 32GB DDR5 Trident Z5 C36 6000MHz kit (naturally thinking the faster the better), but given it is hideously expensive I am wondering whether the increased bandwidth over say a C36 5600Mhz or even a C40 5200Mhz kit is worth the cost.

Would appreciate any thoughts from the resident gurus.

5600 and up are usually the better chips. I have a 5600mhz CL40 set of Kingston Fury Beast and it went to 6000mhz easily. I haven't tried lowering the timings yet.
 

rhkcommander959

Limp Gawd
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Mar 26, 2020
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209
5600 and up are usually the better chips. I have a 5600mhz CL40 set of Kingston Fury Beast and it went to 6000mhz easily. I haven't tried lowering the timings yet.
This, get 5600+ for the SK Hynix DIMMs, they often use Micron at 5200 and under and they are already topped out.

If you're doing 4 sticks though, probably whatever is the cheapest you can get that you like.
 

Blade-Runner

2[H]4U
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Feb 25, 2013
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3,880
This, get 5600+ for the SK Hynix DIMMs, they often use Micron at 5200 and under and they are already topped out.

If you're doing 4 sticks though, probably whatever is the cheapest you can get that you like.

I will stick to 2 dimms given the theory that 4 sticks can cause issues when overclocking. I would have liked to have gone with 64gb but that will cost more than the CPU and Mboad combined.

5600 and up are usually the better chips. I have a 5600mhz CL40 set of Kingston Fury Beast and it went to 6000mhz easily. I haven't tried lowering the timings yet.

Is there any observable benefit from lower timings?
 

chameleoneel

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I will stick to 2 dimms given the theory that 4 sticks can cause issues when overclocking. I would have liked to have gone with 64gb but that will cost more than the CPU and Mboad combined.



Is there any observable benefit from lower timings?
based on benchmarks----there seems to be a noteable improvement between 40 and 36. 32 isn't worth it, at the current speeds.
 
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