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What RAM would go best with a 5900x?

I want to go with 32GB of RAM, I saw ppl saying that the sweet spot will be 4000MHz, and linked a G SKILL kit at 4000MHz CL16. 

 

The thing is I don't know if these are available in Romania, I found a g skill kit at 3600MHz CL16 at an acceptable price, will these bottleneck the CPU and should I try to find higher frequency RAM?

 

The alternative is 4 sticks at 4400MHz CL18 for 50 euro more.

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Where do you know from that 4000mhz is the sweetspot for Ryzen 5000?

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Just now, WojciechSasky said:

Where do you know from that 4000mhz is the sweetspot for Ryzen 5000?

It says 3200Mhz on product page.

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24 minutes ago, Rym said:

I want to go with 32GB of RAM, I saw ppl saying that the sweet spot will be 4000MHz, and linked a G SKILL kit at 4000MHz CL16. 

 

The thing is I don't know if these are available in Romania, I found a g skill kit at 3600MHz CL16 at an acceptable price, will these bottleneck the CPU and should I try to find higher frequency RAM?

 

The alternative is 4 sticks at 4400MHz CL18 for 50 euro more.

4000Mhz with CL 16 means 8 nanoseconds delay

4400Mhz with CL 18 means 8.18181818 nanoseconds delay.

 

So technically the 4000Mhz CL16 is faster.

 

 

Calculated here: https://notkyon.moe/ram-latency.htm

When i ask for more specs, don't expect me to know the answer!
I'm just helping YOU to help YOURSELF!
(The more info you give the easier it is for others to help you out!)

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1 minute ago, HanZie82 said:

4000Mhz with CL 16 means 8 nanoseconds delay

4400Mhz with CL 18 means 8.18181818 nanoseconds delay.

 

So technically the 4000Mhz CL16 is faster.

 

 

Calculated here: https://notkyon.moe/ram-latency.htm

Are there usually any issues going for 4 sticks instead of 2?

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Just now, Rym said:

Are there usually any issues going for 4 sticks instead of 2?

no issues

and ram timings have no noticeable affect to the pc

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9 minutes ago, Abdullah Bhutta said:

It says 3200Mhz on product page.

That's why I'm asking.

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6 minutes ago, HanZie82 said:

4000Mhz with CL 16 means 8 nanoseconds delay

4400Mhz with CL 18 means 8.18181818 nanoseconds delay.

 

So technically the 4000Mhz CL16 is faster.

 

 

Calculated here: https://notkyon.moe/ram-latency.htm

Which 4000 Mhz DDR4 is CL16?

 

The G.Skill stuff, which seems to be the most common, is CL19.

 

https://www.canadacomputers.com/product_info.php?cPath=24_311_1326&item_id=138333

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Ideally what you should buy doesnt mean you have to follow it closely. If 3600 C16 is cheap enough to justify bit of performance loss, then sure buy that. the "sweet spot" everyone else talks about is for performance, not value for money

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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I'm in the same boat. My suggestion is wait for the benchmarks/reviews to hit (Which should be soon, can't see embargo date being the same as release date). Keep in mind you can likely get 3600-3800mz ram and OC it to the sweet spot. That is likely what I will be doing.

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Quick question:

1- is CL16 the first number?, doesn't matter if the ram timings are 16-18-18-39, is still considered CL16?

2- What about if the RAM is 16-22-22? Does it matter?

i7 10700k @ 5.125 Ghz

MSI z490 tomahawk

16 Gb (2 x 8 GB) Patriot Viper Steel - 4000mhz - 16-16-16-34

MSI 1070TI titanium

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3 hours ago, EspinalAndres said:

Quick question:

1- is CL16 the first number?, doesn't matter if the ram timings are 16-18-18-39, is still considered CL16?

2- What about if the RAM is 16-22-22? Does it matter?

It’s always the first number. But you do have to keep in mind, it’s the difference in what’s used that can give better performance. Usually Samsung b-die chipset will have something like 16-16-16-39 timing(which is better) and also the cheaper Hynix will be like 16-18-18-39. The main difference would be that b-die will have more headroom to be adjusted like overclocking or lower timing. Better memory that are binned good are more expensive which usually carries the b-die, and usually people will grab a cheaper b-die sets and overclock it to match that of a set that’s twice as expensive.

 

planning to build a SSF using 5900x so doing im due diligence on memory. I’m setting on a set of $240 trident z neo 3600Mhz 16-16-16-36 and overclock it to 4000MHZ. 

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