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leyo96

RAM help!! What should I get? CL and speed explanation!

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Posted · Original PosterOP

Hello,

so I'm building my first pc, this is what i currently bought (I'm going to overclock):
-msi z370 gaming pro carbon
-intel I7 8700k
-RTX 2080 asus dual OC

Everything so far went very smooth but holy f***k if I don't understand anything about RAM.

I know I need and want 16Gb and i know that up to 3000Mhz it's worth to spend the money, but what about CL? Does it matter?

On the cpu specs it says up to DDR4-2666, how can then 3000Mhz ram be faster and better if the cpu specs say up to 2666?

 

Please help me to understand and give me some suggestions on what model to get and more in general what speed and CL.

 

Thank you!!

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3 minutes ago, leyo96 said:

Hello,

so I'm building my first pc, this is what i currently bought (I'm going to overclock):
-msi z370 gaming pro carbon
-intel I7 8700k
-RTX 2080 asus dual OC

Everything so far went very smooth but holy f***k if I don't understand anything about RAM.

I know I need and want 16Gb and i know that up to 3000Mhz it's worth to spend the money, but what about CL? Does it matter?

On the cpu specs it says up to DDR4-2666, how can then 3000Mhz ram be faster and better if the cpu specs say up to 2666?

 

Please help me to understand and give me some suggestions on what model to get and more in general what speed and CL.

 

Thank you!!

CPU specs is 2666 mhz because this is stock speed

 

Even if you buy a 3000 mhz ram kit, it will run a 2666 mhz if you don't overclock the RAM it or set XMP on in the bios


CPU: Intel i7 6700K 4.5 ghz / CPU Cooler: Corsair H100i V2 / Board: Asus Z170-A / GPU: Asus Rog Strix GTX 1070 8GB / RAM: Corsair Vengeance LPX 16GB DDR4 3000 mhz / SSD: Samsung 850 Evo 500 GB / PSU: EVGA G3 SuperNova 650W / Case: Fractal Design Define S / Keyboard: Corsair MX Silent / Mouse: Logitech G403 / Monitor: Dell 27" TN 1ms 1440p/144hz Gsync

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1 minute ago, gbergeron said:

Even if you buy a 3000 mhz ram kit, it will run a 2666 mhz if you don't overclock the RAM it or set XMP on in the bios

If you don't set XMP in BIOS it will run at 2133, not 2666.


CPU: Ryzen 5 1600 (3.6GHz; 1.25v) Cooler:  Noctua NF-A9x14 on Wraith Spire Heatsink Mobo: Asus Strix B350-i GPU: Sapphire PULSE RX 580 8GB (1275 MHz; 1.04v) RAM: G.Skill Trident Z 3200MHz 14CL 2x8GB SSD0: Crucial MX300 525GB SSD1: ADATA Ultimate SU800 128GB M.2 PSUCorsair SF450 Case: Fractal Design Node 202 Monitor1ViewSonic XG2401 144Hz 24" / AOC G2460PF 144Hz 24"

Laptop

Microsoft Surface

I usually edit my posts immediately after posting them, as I don't check for typos before pressing the shiny SUBMIT button. 

Spoiler

Retired Devices and Inventory:

  • Asus NV56 17" (i7-3360QM, NVIDIA GT 650M, DDR3 8GB) laptop
  • Lenovo Thinkpad X220 12" (i5 vPro 2520M, Intel HD Graphics 3000, Samsung DDR3 1300MHz 9CL 2x4GB) laptop
  • Biostar X370GTN Racing Mini-ITX motherboard

 

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same MHz and lower CL=lower latency ram. Doesn't make a big difference for most things, you can play with the numbers here https://notkyon.moe/ram-latency.htm


r5 2400G | Noctua Nh l9x65 am4 | MSI b450i gaming ac | G.Skill Ripjaws V 2x8GB ddr4-3000 | 256GB Samsung 950 pro nvme | 1TB Adata su800 | 4TB HGST drive | Silverstone SX500-LG | Silverstone ML08

HTPC i3 7300 | Gigabyte GA-B250M-DS3H | 8GB cheap ram | Adata XPG SX8000 128GB M.2 | Many HDDs | Msi rx 560 aero itx | Rosewill FBM-01 | Corsair CXM 450W

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2 minutes ago, leyo96 said:

So is the price increase between a 3000 mhz cl14 and cl16 ram worth?

Not for Intel, not really.


2600X @ 4.275 | H150i Pro w/Kryonaut | X470 Gaming 7 | Liquid Vega 64 | 3400c14 Memory | EVGA P2 750W Platinum | 500GB 970 EVO | 512GB SSD | 2TB HDD | 32" 4k DisplayCorsair K55 Keyboard | Roccat Tyon Mouse | Phanteks Entho Pro M Case PCPARTPICKER

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