help with ram

[GHOSTX1]

hello, fellow forum users 

i need some help choosing ddr5 memory for a ryzen 7 7800x3d 

what is the difference between cl ratings? aand what speed should i go for?

i am going with 32gb ram, with the MSI MAG B650 TOMAHAWK WIFI mb (if thats relevant)

also any motherboard reccomendations? (if the one ive picked isnt ideal)

 

[RONOTHAN##]

3 minutes ago, GHOSTX1 said:

what is the difference between cl ratings?

It's one of the memory timings measured in clock cycles, lower is better for a given frequency. 

 

5 minutes ago, GHOSTX1 said:

aand what speed should i go for?

The answer is pretty much always 6000 CL30 or CL32. Speeds higher than 6000MT/s don't work ideally out of the box on AM5, and CL30 and CL32 are the lowest latency kits you can find on DDR5. Plus, 6000 CL30/32 is usually some of the cheapest RAM you can find, so its not like you save much money by going for a slower kit anyway. 

 

8 minutes ago, GHOSTX1 said:

also any motherboard reccomendations? (if the one ive picked isnt ideal)

The one you picked is fine, though there are likely better options available. Where are you shopping for motherboards, how much were you looking to spend, and what features do you need? 

[podkall]

1 minute ago, RONOTHAN## said:

The answer is pretty much always 6000 CL30 or CL32. Speeds higher than 6000MT/s don't work ideally out of the box on AM5, and CL30 and CL32 are the lowest latency kits you can find on DDR5. Plus, 6000 CL30/32 is usually some of the cheapest RAM you can find, so its not like you save much money by going for a slower kit anyway. 

 

PCPartPicker Part List

CPU: AMD Ryzen 7 7800X3D 4.2 GHz 8-Core Processor  ($339.99 @ Amazon)
Motherboard: *Gigabyte B650M AORUS ELITE AX Micro ATX AM5 Motherboard  ($141.00 @ Amazon)
Memory: *Silicon Power XPOWER Zenith Gaming 32 GB (2 x 16 GB) DDR5-6000 CL30 Memory  ($94.97 @ Amazon)
Total: $575.96
Prices include shipping, taxes, and discounts when available
*Lowest price parts chosen from parametric criteria
Generated by PCPartPicker 2024-06-02 21:47 EDT-0400

[kb5zue]

I am using an Asus X670E-E motherboard with 64GB Corsair Dominator Platinum RGB ram without any problems at all.  The ram is CMT64GX5M2B6000C40.  So it isn't 30 or 32 but it works just fine.  This will be my final upgrade since I will be 70 years old in a few months so I went the extra mile on some of the parts.  

 

Take care and good luck.

[Dedayog]

11 minutes ago, RONOTHAN## said:

It's one of the memory timings measured in clock cycles, lower is better for a given frequency. 

 

The answer is pretty much always 6000 CL30 or CL32. Speeds higher than 6000MT/s don't work ideally out of the box on AM5, and CL30 and CL32 are the lowest latency kits you can find on DDR5. Plus, 6000 CL30/32 is usually some of the cheapest RAM you can find, so its not like you save much money by going for a slower kit anyway. 

 

The one you picked is fine, though there are likely better options available. Where are you shopping for motherboards, how much were you looking to spend, and what features do you need? 

To note, HU found that the 7800X3D isn't impacted by CL as much as other CPUs, so if folks can find CL32 cheaper they should feel fine about getting it.

 

Unless other testing has changed that opinion?

[GHOSTX1]

10 minutes ago, RONOTHAN## said:

It's one of the memory timings measured in clock cycles, lower is better for a given frequency. 

 

The answer is pretty much always 6000 CL30 or CL32. Speeds higher than 6000MT/s don't work ideally out of the box on AM5, and CL30 and CL32 are the lowest latency kits you can find on DDR5. Plus, 6000 CL30/32 is usually some of the cheapest RAM you can find, so its not like you save much money by going for a slower kit anyway. 

 

The one you picked is fine, though there are likely better options available. Where are you shopping for motherboards, how much were you looking to spend, and what features do you need? 

should have probably mentioned im in the uk, also i need wifi and bluetooth to be in my mb 

also i was looking at this memory, https://amzn.eu/d/9XMwyob 

[GHOSTX1]

1 minute ago, Dedayog said:

so if folks can find CL32 cheaper they should feel fine about getting it

for me cl30 and 32 are about the same price only 5£ diiference 

[RONOTHAN##]

3 minutes ago, Dedayog said:

To note, HU found that the 7800X3D isn't impacted by CL as much as other CPUs, so if folks can find CL32 cheaper they should feel fine about getting it.

 

Unless other testing has changed that opinion?

^^

 

It doesn't even make much of a difference on the non-X3D chips as CL30 and CL32 are such close values. The only reason I wouldn't recommend a CL36 kit as well if it was cheap is that you might end up with a CL36-44-44 kit and end up with potential compatibility issues. 

 

5 minutes ago, GHOSTX1 said:

also i need wifi and bluetooth to be in my mb 

I mean, if this is your only requirement, a B650M-HDV/M.2 and a ~$20 WiFi adapter like the Intel AX210 would be plenty and save you ~$50 on the motherboard. 

 

8 minutes ago, GHOSTX1 said:

also i was looking at this memory, https://amzn.eu/d/9XMwyob 

That's a fine kit, if you want RGB that's the kit I would recommend. 

[GHOSTX1]

8 hours ago, RONOTHAN## said:

and save you ~$50 on the motherboard. 

it will save me 20£ here, so i think i will keep my motherboard choice 

 

8 hours ago, RONOTHAN## said:

That's a fine kit, if you want RGB that's the kit I would recommend. 

thank you