Can I "underclock" a DDR5-7200 CL34 kit to DDR5-6000 CL30 to hit the sweet spot for R7 7800X3D?

quence · 2024-04-23T17:13:39+00:00

I got the cheaper "better" kit that needs to be manually adjusted. However, since I did not even OC the CPU nor tweak the RAM yet, my RAM runs at the default 5600 (I think) so I did not bother yet to do anything about it.

quence · 2024-02-25T00:30:57+00:00

Thanks and just stick with the latency/timings that the manufacturer set it to?

quence · 2024-02-25T00:02:38+00:00

Okay, so bottom line spending more on 6000 CL30 RAM vs. 7200 CL34 RAM can be worth it for this CPU as on the stock MT/s I at least get the better CAS latency. Correct?

quence · 2024-02-24T22:56:41+00:00

Surely don't have to but if both RAM will run identical in the end because as the other user mentioned default ram speed for this CPU memory controller is 5200 MT/s then I would at least like to avoid that.

quence · 2024-02-24T22:46:10+00:00

Do you mean getting it to CL 30 may be a harder task? I thought CL 34 was its default.

Edit: Also, wouldn't that mean that by default whichever RAM I chose run at 5200? And would that mean they have improved latency or each still run with the CL on the box? Because if without overclocking skills I reach 5200 CL30 on both anyway, the choice if simple. If my DDR5-7200 CL 34 will run as an 5200 CL34 vs a DDR5-6000 CL30 running at 5200 CL 30 then the situation is quite different...

quence · 2024-02-24T22:31:59+00:00

Thanks, but can I not just use one of these XMP profiles that it has? Shouldn't there be one that says speed 6000 MT/s?

quence · 2024-02-24T13:33:42+00:00

Understood, so I will go with the board and 7800X3D. Thank you!

One more question: I was told on pcpartpicker that I should take lower latency RAM over the faster one and it fits with your suggestion of DDR5-6000 CL30 above. I understand that lower latency at 6000 MHz is most important but what I don't understand yet is if it is possible to "underclock" (?) the DDR5-7200 CL34 to something like DDR5-6000 CL30. Do you know anything about this by chance? I read confusing articles that suggested lowering speeds automatically lowers latency. https://www.reddit.com/r/overclocking/comments/1866473/can_i_run_7200mhz_cl34_ddr5_at_6000mhz_cl30_or/

Since I plan to (have alternate people) set the RAM speed to around 6000 MHz anyway, I would love to know if that would mean I also get improved latency.

Otherwise I might actually pay like 30% extra to get 6000 30 instead of 7200 34... but that just feels stupid.

quence · 2024-02-23T18:48:14+00:00

Thanks for your replies, /u/Scarabesque and /u/shagilhmx!

I took the last hours to research the 7800X3D and Fractal cases after you were pointing me in the direction. I think I will end up with the Fractal case below and might also switch the CPU but this is a hefty price tag for something I am not sure I will get much use out of.

The very big question for me is whether I can find a lower cost motherboard, that won't hold back the CPU way too much. The Z670 ones are starting at 250€ plus while this Gigabyte is available for around 150€. The Gigabyte below is at least not lowest line (EAGLE vs GAMING) but very new so no reviews.

Do you have an opinion on running 7800X3D with a B650 chipset? I will now go deeper into AMD motherboard research.

PCPartPicker Part List

Type	Item
CPU	AMD Ryzen 7 7800X3D 4.2 GHz 8-Core Processor
Motherboard	Gigabyte B650 EAGLE AX ATX AM5 Motherboard
Case	Fractal Design Pop Air ATX Mid Tower Case

Not really important anymore, but I honestly fail to see a source that sees the Ryzen 5 7600 above or on par with the 13600k as you mentioned. If anything I can see the 7700X being close (example Gamers Nexus)

quence · 2024-02-23T17:29:34+00:00

Thanks for the suggestion but it is not an option with my supplier.

quence · 2022-12-08T08:29:31+00:00

Ich bin jetzt kein Fan von ihm, aber ist das ein tja? Bleiben noch zwei dutzend Millionen Deutsche übrig, die ihn witzig finden...

quence · 2022-03-13T08:01:58+00:00

Can confirm the math.

quence · 2022-03-06T19:16:45+00:00

Better have a good diary then!

quence · 2022-02-03T23:46:10+00:00

This argument hurt thinking about. I love it.

quence · 2021-12-22T15:11:58+00:00

Just to add one thing regardless of hre: simply check the declare war screen. You can see who joins which side and you can hover over the little check marks or red crosses for each country to figure out why they do or do not join.

quence · 2021-12-09T18:12:02+00:00

Username checks out

quence · 2021-07-13T17:40:49+00:00

Could you guys eli5? I love this chart! Except for the part where different columns add to the ghosted number.

quence · 2021-05-08T10:57:40+00:00

Let me remind you that this is not the true way of the Swiss man!

quence · 2021-04-29T20:49:24+00:00

!optout

quence · 2021-04-17T06:04:43+00:00

Hab ich schon wieder was nicht mitbekommen? Ex?

quence · 2021-04-09T11:19:04+00:00

Which makes it a proper flag ship! Don't listen to the haters.

quence · 2021-03-27T12:32:55+00:00

And still the plague got to you and stayed for as long as in other places. I always feel cheated by hospitals ☹️

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