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Does ram speed really matter... over 3200MHz on 8th gen Intel?

MadhatterX
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Buying the final components for an 8700K gaming build to replace an older 6700K build and wondering if I should buy 3200MHz RAM or faster?

 

Watched an older video from April 2017 on the topic of RAM speeds with Intel 7th gen and it showed only marginal improvements in performance after 3200MHz. Testing was done on a 7700K and there hasn’t been an update to this video with an 8700K (or Ryzen for that matter). At least I haven’t seen an update for 2018. Is it worth revisiting this subject? If not what is the consensus for an 8700K... and for other CPUs for that matter as well.

 

 

Quote

There he goes. One of God's own prototypes.
A high-powered mutant of some kind never even considered for mass production.
Too weird to live, and too rare to die. – HST

 

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Coffee Lake's result is about similar to Kaby Lake. High frequency memory helps a tiny bit in average frame rates only, but benefits minimum frame rates quite noticeably if your doing high refresh rate gaming.

 

The effect on Ryzen is about 3x to 5x greater than that on Kaby Lake.

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: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside 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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On Ryzen the higher the speeds the better, but for Intel 8th Gen I don't think the gains are worth the price. But I haven't personally tried high refresh rate gaming with RAM speeds that high.

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