Chances of 4 x 16GB dual rank DIMMs working with 5800X3D?

RatmanGB · 20 Jun 2023 at 12:22

I have a 5800X3D running on a MSI MPG B550 Gaming Edge motherboard with two 16GB sticks of Corsair Vengeance RGB Pro Black running at 3600 CL18. According to CPU-Z the part number is CMW32GX4M2Z3600C18 and they are dual rank DIMMs.

The PC is running perfectly and I have no real need for 64GB RAM and the sensible call here is to not mess around and stick with what I've got.

However!

If I get another identical kit what are the chances of the 5800X3D being able to run 4 DIMMs a) at all and b) at full speed?

mickyflinn · 20 Jun 2023 at 12:40

Should be able to run all 4 dimns but you may not get to 3600mhz and mite have to settle for slightly lower speed if problems occur.

pepp77 · 20 Jun 2023 at 12:42

5800X3D according to AMD supports the following Memory configurations and speed

System Memory Type = DDR4

Memory Channels = 2

Max Memory Speed
2x1R = DDR4-3200
2x2R = DDR4-3200
4x1R = DDR4-2933
4x2R = DDR4-2667

RatmanGB · 20 Jun 2023 at 13:16

So it's already running beyond spec as it is.

Still, doesn't seem to be causing any problems.

Brizzles · 20 Jun 2023 at 13:55

From experience its really not worth the hassle of getting them stable.

You'll probably end up losing performance on the the 32Gb you use for the extra 32Gb that you will not use.

Cyber-Mav · 20 Jun 2023 at 15:41

I got 4 sticks and cant run more than 2733mhz, must be a mobo limitation since i had same limit with my 1700, 5600x, 5800x and 5900x

lsg1r · 20 Jun 2023 at 20:20

@RatmanGB

Obviously not quite the same setup but I'm running 4x32GB sticks with a 5950x on an msi b550 mortar matx board and they're happy at 3600mhz... I started with 2 and then added 2 more, I literally just turned on xmp, adjusted infinity fabric to 1800mhz and it all just happily ticked away. They're working fine at 3600mhz even after I tweaked CO/PBO too....

Obviously mileage will vary with the x3D versus my 5950x but it 'should' work imo.

Ram used: Corsair Vengeance LPX - CMK64GX4M2D3600C18

Dg834man · 21 Jun 2023 at 01:59

Might get away with it got 48gb running 3600c16 with 2x8gb sr + 2x16gb dr both kits have the same timings.

eeii · 22 Jun 2023 at 00:36

I’m running 4x8GB 3733 cas16 if that helps

Raiden85 · 27 Jun 2023 at 09:15

No issues running 4x 16GB sticks of Corsair Dominator Platinum at 3200Mhz (16-18-18-36) with a 5800X3D, originally it ran with a 5950X and had no issues on that chip either.

Model is the CMT32GX4M2C3200C16

RatmanGB · 28 Jun 2023 at 10:43

Raiden85 said:
No issues running 4x 16GB sticks of Corsair Dominator Platinum at 3200Mhz (16-18-18-36) with a 5800X3D, originally it ran with a 5950X and had no issues on that chip either.

Model is the CMT32GX4M2C3200C16

Sorry, I've tried to find out via Google but haven't been able to - are those single or dual rank?

Thanks.

Raiden85 · 28 Jun 2023 at 11:37

RatmanGB said:
Sorry, I've tried to find out via Google but haven't been able to - are those single or dual rank?

Thanks.

They are dual rank.

RatmanGB · 28 Jun 2023 at 12:11

Raiden85 said:
They are dual rank.

Thanks very much!