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how much mhz speed of ram do i really need for gaming?

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hi guys im buying a new gaming rig, so far my specs are: i7 8700k, asus rog strix z390-f, asus rtx 2080.

now i dont really know how much memory should i take, 16 of how much memory speed? 2666? 2400? do i need to go overkill and go 3000 and above? aslo should i consider CL as a factor for choosing?

Gaming Laptop: Dell G5 5587

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I'd recommend going 16GB capacity and at least 2666MHz in terms of speed. This should be optimal. I wouldn't pay for more than 3000MHz, especially that you can overclock the memory and there's little-to-no benefit with faster memory on Coffee Lake.

CPU: AMD Ryzen 7 5800X GPU: AMD Radeon RX 6900 XT 16GB GDDR6 Motherboard: MSI PRESTIGE X570 CREATION
AIO: Corsair H150i Pro RAM: Corsair Dominator Platinum RGB 32GB 3800MHz DDR4 Case: Lian Li PC-O11 Dynamic PSU: Corsair RM850x White

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If you're going with an 8700k and RTX2080, I see no reason to cheap out when it comes to memory. Get 2x8GB (16GB) 3000MHz memory.

CPU: Intel i7 6700k  | Motherboard: Gigabyte Z170x Gaming 5 | RAM: 2x16GB 3000MHz Corsair Vengeance LPX | GPU: Gigabyte Aorus GTX 1080ti | PSU: Corsair RM750x (2018) | Case: BeQuiet SilentBase 800 | Cooler: Arctic Freezer 34 eSports | SSD: Samsung 970 Evo 500GB + Samsung 840 500GB + Crucial MX500 2TB | Monitor: Acer Predator XB271HU + Samsung BX2450

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Just now, Morgan MLGman said:

I'd recommend going 16GB capacity and at least 2666MHz in terms of speed. This should be optimal. I wouldn't pay for more than 3000MHz, especially that you can overclock the memory and there's little-to-no benefit with faster memory on Coffee Lake.

should i consider Cas Latency as factor here?

Gaming Laptop: Dell G5 5587

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2 minutes ago, Mr Fister said:

should i consider Cas Latency as factor here?

Decent kits will be 15 for 3000MHz, but it won't matter much if you go with one that has 16 CAS latency.

Pretty much any kit off this list should be fine.
https://pcpartpicker.com/products/memory/#s=403000&Z=16384002&L=100,150&sort=price&page=1

CPU: Intel i7 6700k  | Motherboard: Gigabyte Z170x Gaming 5 | RAM: 2x16GB 3000MHz Corsair Vengeance LPX | GPU: Gigabyte Aorus GTX 1080ti | PSU: Corsair RM750x (2018) | Case: BeQuiet SilentBase 800 | Cooler: Arctic Freezer 34 eSports | SSD: Samsung 970 Evo 500GB + Samsung 840 500GB + Crucial MX500 2TB | Monitor: Acer Predator XB271HU + Samsung BX2450

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You are limited to 2666MHz with i7 8700. You would need 8700k to be able to use higher speed RAM.

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8 minutes ago, WereCat said:

You are limited to 2666MHz with i7 8700. You would need 8700k to be able to use higher speed RAM.

im using the i7 8700k

 

19 minutes ago, Spotty said:

Decent kits will be 15 for 3000MHz, but it won't matter much if you go with one that has 16 CAS latency.

Pretty much any kit off this list should be fine.
https://pcpartpicker.com/products/memory/#s=403000&Z=16384002&L=100,150&sort=price&page=1

is it matter if i buy hyperx or corsair? and 2666mhz is cheaper for me so i think il go with that

Gaming Laptop: Dell G5 5587

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4 minutes ago, Mr Fister said:

im using the i7 8700k

 

Well, if you are overclocking then something like 3000MHz to 3200MHz would be nice to have but above 3200MHz you are starting to hit diminishing returns where you wont really be able to see the differencess outside of benchmarks.

Obviously, the lower the CL, the better as well. 3200MHz CL14 kits are awesome if you can afford it but its not really necessary.

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Having dual channel memory on Coffee Lake (more than 1 stick) is more important than frequency/timings imo.

 

13 minutes ago, WereCat said:

You are limited to 2666MHz with i7 8700. You would need 8700k to be able to use higher speed RAM.

actually memory oc depends on the motherboard only, not the CPU. You can run 4266MHz memory on 8700 and waste money that way

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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2 minutes ago, WereCat said:

Well, if you are overclocking then something like 3000MHz to 3200MHz would be nice to have but above 3200MHz you are starting to hit diminishing returns where you wont really be able to see the differencess outside of benchmarks.

Obviously, the lower the CL, the better as well. 3200MHz CL14 kits are awesome if you can afford it but its not really necessary.

i wont go over 3000 and CL 14 is to expensive for small performance boost 2666 and CL 15/16 is the sweet spot, plus i can OC it

 

2 minutes ago, Jurrunio said:

Having dual channel memory on Coffee Lake (more than 1 stick) is more important than frequency/timings imo.

 

actually memory oc depends on the motherboard only, not the CPU. You can run 4266MHz memory on 8700 and waste money that way

yes im going 8x2 of 16gb

Gaming Laptop: Dell G5 5587

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1 minute ago, Jurrunio said:

Having dual channel memory on Coffee Lake (more than 1 stick) is more important than frequency/timings imo.

 

yes

1 minute ago, Jurrunio said:

actually memory oc depends on the motherboard only, not the CPU. You can run 4266MHz memory on 8700 and waste money that way

I have never tested this for myself and I have seen so many people claiming otherwise that I dont know anymore... but anyway, if you are runing i7 8700 then you shouldnt really bother with anything faster than 2666MHz RAM anyway. And you should not have an expensive motherboard that can run it because you are obviously on a "lower" budget.

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guys i need help choosing: should i take 2400 CL14 or 2666 CL16 for the same price the both of them

Gaming Laptop: Dell G5 5587

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2 hours ago, WereCat said:

yes

I have never tested this for myself and I have seen so many people claiming otherwise that I dont know anymore... but anyway, if you are runing i7 8700 then you shouldnt really bother with anything faster than 2666MHz RAM anyway. And you should not have an expensive motherboard that can run it because you are obviously on a "lower" budget.

 

2 hours ago, Jurrunio said:

Having dual channel memory on Coffee Lake (more than 1 stick) is more important than frequency/timings imo.

 

actually memory oc depends on the motherboard only, not the CPU. You can run 4266MHz memory on 8700 and waste money that way

 

2 hours ago, WereCat said:

Well, if you are overclocking then something like 3000MHz to 3200MHz would be nice to have but above 3200MHz you are starting to hit diminishing returns where you wont really be able to see the differencess outside of benchmarks.

Obviously, the lower the CL, the better as well. 3200MHz CL14 kits are awesome if you can afford it but its not really necessary.

guys i need help choosing: should i take 2400 CL14 or 2666 CL16 for the same price the both of them

Gaming Laptop: Dell G5 5587

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5 minutes ago, Mr Fister said:

 

 

guys i need help choosing: should i take 2400 CL14 or 2666 CL16 for the same price the both of them

2400 CL14

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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7 hours ago, Jurrunio said:

2400 CL14

cool

Gaming Laptop: Dell G5 5587

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8 hours ago, Mr Fister said:

 

 

.

pairing 2400 or 2666 with a 8700k is such a tragedy, unless you simply don't overclock and don't care, even on intel a bump from 2400 to 3600 is about a 15% boost to the cpu, unless you cheaped out on literally everything else to aim for a budget build.

 

That said if you are only gaming on 60hz, then it doesn't matter. As your build would do perfectly fine on 4k/60

5950x 1.33v 5.05 4.5 88C 195w ll R20 12k ll drp4 ll x570 dark hero ll gskill 4x8gb 3666 14-14-14-32-320-24-2T (zen trfc)  1.45v 45C 1.15v soc ll evga non-3090 tie ftw3 1905 0.8v 65C 270w (double fps of 1080ti) ll samsung 970 500gb nvme os ll sandisk 4tb ssd ll all nf12/14 fans ll tt gt10 case ll evga g2 1300w ll w10 pro ll 34GN850B ll x27 ll PA272w

 

9900k 1.36v 5.1avx 4.9ring 85C 195w (daily) 1.02v 4.3ghz 80w 50C R20 temps score=5500 ll D15 ll Z390 taichi ult 1.60 bios ll gskill 4x8gb 14-14-14-30-280-20 ddr3666  bdie 1.45v 45C 1.22sa/1.18 io  ll EVGA non-30 tie XC 1830//7600 0.85v 210w ll  8x nf12/14 fans 2x samsung 860 evo 500gb raid 0 ll 500gb nvme 970 evo ll Corsair graphite 780T ll EVGA P2 1200w ll Windows 10 Pro ll NEC PA242w (movie, work mon dying) 1080p 60hzll Predator X27 4k144 hdr (using at 4:4:4 98 fan is dying)

 

 

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