OK. I understand the DIIMM placement, but it only shows up to 3200Mhz even thought the specs on Newegg say well over that. Is that because it is only verified up to 3200Mhz but not the overclocking speeds mentioned on Newegg? Also, SR & DR?
does it fall back to cas 14 automatically or do I need to change that in the bios/xmpFaster=better, especially since the 4000 will probably fall back to cas 14 at 3600.
Faster=better, especially since the 4000 will probably fall back to cas 14 at 3600.
does it fall back to cas 14 automatically or do I need to change that in the bios/xmp
I'm not sure if you'd have to change it in bios because it really depends on the motherboard and the ram's defaults.does it fall back to cas 14 automatically or do I need to change that in the bios/xmp
Price isn't a big factor in my decision. I just want to make sure I'm getting the better ram.I'm not sure if you'd have to change it in bios because it really depends on the motherboard and the ram's defaults.
Price isn't a big factor in my decision. I just want to make sure I'm getting the better ram.
4000 cas 18 is $160 USD and the 3600 cas 14 is $210 USDUnless you have money burning a hole in your pocket just go with the cheaper of the two.
You are honestly not going to see a performance difference in real life.
What's the actual price difference??
4000 cas 18 is $160 USD and the 3600 cas 14 is $210 USD
Your thoughts?4000 cas 18 is $160 USD and the 3600 cas 14 is $210 USD
Your thoughts?
With a 30% premium I'd Personally go with the cheaper 4000mhz, like I said its a tradeoff, $20 may be worth it just maybe, $50 definitely isn't.
What is the rest of your setup??
The 3600 is samsung b-die, the 4000 is hynix-a.
While on ryzen gen 1 and 2 that may make a difference, on Intel or ryzen 3 (5*** series) timings generally make very little difference.
Enable xmp with the 4000 and drop the clock to 3600 and it'll likely run cas 16, the difference between the 3600 cas 14 and the 4000 running at 3y00 cas 16 is probably going to be about 1-2% max.
You're not going to notice that difference at all
The 3600 is better ram, just not $50 better imo.
madmatt30-here is what I'm thinking:With a 30% premium I'd Personally go with the cheaper 4000mhz, like I said its a tradeoff, $20 may be worth it just maybe, $50 definitely isn't.
What is the rest of your setup??
The 3600 is samsung b-die, the 4000 is hynix-a.
While on ryzen gen 1 and 2 that may make a difference, on Intel or ryzen 3 (5*** series) timings generally make very little difference.
Enable xmp with the 4000 and drop the clock to 3600 and it'll likely run cas 16, the difference between the 3600 cas 14 and the 4000 running at 3y00 cas 16 is probably going to be about 1-2% max.
You're not going to notice that difference at all
The 3600 is better ram, just not $50 better imo.
I'm trying to decide between two sets of ram right now: one is 3600mhz cas 14 and the other is 4000mhz cas 18. Both same brand, but the 4000mhz ram is much cheaper. What is your input when directly comparing these two sets? (Both are Teamgroup t-force xtreem argb).
How could you find out if a motherboard is able to handle it legitimately?The difference between those two is defined by responsiveness, which is being measured in nanoseconds (lower is better).
DDR4-3600 CL14 = 7.77ns (better)
DDR4-4000 CL18 = 9ns (worse)
Also, please keep in mind that DDR4-4000 is not being supported by most motherboards (sometimes even if the specs sheet say it does).
How could you find out if a motherboard is able to handle it legitimately?
One thing that no one seemed to have mentioned so far, is Infinity Fabric/memory clock desync if you are getting a Ryzen.
This may result in said 4000MHz module actually running better at 3600, as few non-APU Ryzens seemed to run stable much abouve 1800MHz FCLK, or so I heard.
Might be useful reading up on that a bit, if you do.
So what you're saying is that the 3600 is better because of the lower latency and that the slower DRAM speed is more stable while the 4000(is opposite) but COULD be a better performer when ran at the lower voltage?The vendor will have that specified in the manual of the motherboard.
But you should take those informations with “a grain of salt”.
XMP is a “safe” overclock, but still: it’s an overclock. It hasn’t been approved by JEDEC or Intel/AMD!
On DDR4, any voltage above 1.2V is an overclock!
CONCLUSION:
You can’t know for sure if it will work, usually it does if the vendor says so.
Sometimes it does work for a few months, then later, it falls at JEDEC speeds: 2133 or 2400 @1.2V.
ADVICE:
Make sure you have decent cooling solutions. Don’t cheap out!
Also, lower DDR4 speeds like: 2666, 2933, 3200, 3466 are a safer bet that they’ll work.
either: Mobo-ASRock X570 PG Velocita or X570 TaichiWhat make and model motherboard? Version?
Go to the motherboard manufacturer's website.
Find the applicable motherboard User Guide/Manual for the motherboard and check all the supported components.
Read all of the fine print, notes, warnings, etc.. For example, there may be a requirement that the first physically installed RAM module be placed in a specific RAM slot., Be sure that you get RAM kits with matched modules for dual channel use.
Likely the User Guide Manual will refer you back to the motherboard manufacturer's website for more up to date information.
Do that and while you are there peruse any applicable Forums and FAQ's. Look for what is said and what is not said.
Details matter.
OK. I understand the DIIMM placement, but it only shows up to 3200Mhz even thought the specs on Newegg say well over that. Is that because it is only verified up to 3200Mhz but not the overclocking speeds mentioned on Newegg? Also, SR & DR?For the Asrock:
https://download.asrock.com/Manual/X570 PG Velocita.pdf
Reference Section 2.3 beginning on physical numbered Page 24.
For example:
"We suggest that you install the memory modules on DDR4_A2 and DDR4_B2 first for better DRAM compatibility on 2 DIMMs configuration. "
[Do verify that I found the correct User Manual.]