Adding additional RAM

[MrBaker89]

Hi all, 

 

I currently have G.Skill Flare X5 32GB 6000MHz CL32 in my system. 

 

I'm adding another 32GB to the system. I have tried to find a stockist in the UK with this kit in stock but with no luck. 

 

My question is, can I use another brand as long as it has the same speed and timings? 6000mhz CL32-38-38-96 1.35v

 

TIA 

 

P.s Mobo is in sig

[Tetras]

AMD only rate their memory controller for DDR5-3600 with 4 sticks, so even with the exact same kit we still can't tell you 100% what will happen.

 

Most likely, EXPO/XMP will fail on the first boot and you'll have to do some degree of manual tuning. If you mix brands, I'd try to get the same memory chips.

[Agall]

42 minutes ago, MrBaker89 said:

Hi all, 

 

I currently have G.Skill Flare X5 32GB 6000MHz CL32 in my system. 

 

I'm adding another 32GB to the system. I have tried to find a stockist in the UK with this kit in stock but with no luck. 

 

My question is, can I use another brand as long as it has the same speed and timings? 6000mhz CL32-38-38-96 1.35v

 

TIA 

 

P.s Mobo is in sig

Same timings might be the same NAND, but I wouldn't risk the stability issues with a 4x16GB kit with how sensitive RAM is on AM5 already. I'd look to buy a 2x32GB kit or and see if you can sell your current one.

[MrBaker89]

35 minutes ago, Tetras said:

AMD only rate their memory controller for DDR5-3600 with 4 sticks, so even with the exact same kit we still can't tell you 100% what will happen.

 

Most likely, EXPO/XMP will fail on the first boot and you'll have to do some degree of manual tuning. If you mix brands, I'd try to get the same memory chips.

ASrock website says that the X670e PG Lightning board supports up to 192GB ram 4 stick config upto 7200? Apologies if I am mis-reading that. 

[Tetras]

2 hours ago, MrBaker89 said:

ASrock website says that the X670e PG Lightning board supports up to 192GB ram 4 stick config upto 7200? Apologies if I am mis-reading that. 

It doesn't mean you're guaranteed to run 192GB of RAM @ 7200. It means the board supports up to 192GB (4x48GB) and up to 7200 (as an overclock). In their small print they say it is subject to the QVL (which isn't a guarantee either, see buildzoids video here) and there's no memory on the QVL (that I can see) above 6200/6400 that has more than 2 sticks tested.

 

This is an example from MSI of how the board's rating varies on number of sticks and the capacity:

Quote

Max. overclocking frequency:
• 1DPC 1R Max speed up to 8000+ MHz
• 1DPC 2R Max speed up to 6400+ MHz
• 2DPC 1R Max speed up to 6400+ MHz
• 2DPC 2R Max speed up to 5400+ MHz

Before AMD released the AGESA that supported higher speeds, it was pretty normal to use speeds lower than 6200/6400 for Ryzen 7000. This is an old (and now outdated) video on the topic:

 

The memory controller is on the CPU and the massive DDR5 de-rates * that Intel and AMD specify for their CPUs is pretty much saying "4 sticks? You're on your own buddy".

 

I think it is likely (from the recent experiences of other users) that if the sticks are compatible/stable running together then you'll be able to match, or get near to the rated speed of your memory with 4x16GB, but "out of the box" one-click XMP/EXPO is very unlikely. If you'll need to loosen the timings/up the DRAM voltage, or other tweaks, I can't say.

 

* Your CPU's spec page here:

Quote

Max Memory Speed

2x1R DDR5-5200

2x2R DDR5-5200

4x1R DDR5-3600

4x2R DDR5-3600

 

[MrBaker89]

12 hours ago, Tetras said:

It doesn't mean you're guaranteed to run 192GB of RAM @ 7200. It means the board supports up to 192GB (4x48GB) and up to 7200 (as an overclock). In their small print they say it is subject to the QVL (which isn't a guarantee either, see buildzoids video here) and there's no memory on the QVL (that I can see) above 6200/6400 that has more than 2 sticks tested.

 

This is an example from MSI of how the board's rating varies on number of sticks and the capacity:

Before AMD released the AGESA that supported higher speeds, it was pretty normal to use speeds lower than 6200/6400 for Ryzen 7000. This is an old (and now outdated) video on the topic:

 

The memory controller is on the CPU and the massive DDR5 de-rates * that Intel and AMD specify for their CPUs is pretty much saying "4 sticks? You're on your own buddy".

 

I think it is likely (from the recent experiences of other users) that if the sticks are compatible/stable running together then you'll be able to match, or get near to the rated speed of your memory with 4x16GB, but "out of the box" one-click XMP/EXPO is very unlikely. If you'll need to loosen the timings/up the DRAM voltage, or other tweaks, I can't say.

 

* Your CPU's spec page here:

 

 

Thank you very much for your reply. Very helpful. 

 

So, I think I would be better off going for 2 x 32GB sticks instead of adding another 2 x 16GB kits. 

[Patrix87]

I just installed this kit in an Asus X670E-E with a 7800X3D CPU and it works flawlessly on EXPO II settings.
https://ca.pcpartpicker.com/product/Xg2WGX/gskill-trident-z5-neo-64-gb-2-x-32-gb-ddr5-6000-cl30-memory-f5-6000j3040g32gx2-tz5n

Update your bios though.

[MrBaker89]

On 11/28/2023 at 4:27 PM, Patrix87 said:

I just installed this kit in an Asus X670E-E with a 7800X3D CPU and it works flawlessly on EXPO II settings.
https://ca.pcpartpicker.com/product/Xg2WGX/gskill-trident-z5-neo-64-gb-2-x-32-gb-ddr5-6000-cl30-memory-f5-6000j3040g32gx2-tz5n

Update your bios though.

 

Thank you. 

 

My bios is upto date. I will check again before I fit this kit.