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RAM Compatibility

BigBorg
By BigBorg
in CPUs, Motherboards, and Memory
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I'm planning on an upgrade in the next couple of days which I will hopefully last me for years and years. My question is will DDR4 2666 work with the I9 9900K, because I have seen a video on it where it isn't explicitly spoken about but it's there in the benchmark results when comparing different speeds, I have also seen a lot of posts on other help forums but the question is never answered. I'm planning on getting 32GB (either 16x2 or 4x8 haven't decided yet) but the price of 2666 is about £30 cheaper than a kit of 2400, and bearing in mind that I don't want to spend more than I already have to. All I really want to know is, will there be any issues with 2666 MHz with a I9 9900k?

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https://linustechtips.com/topic/1020730-ram-compatibility/
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You can run any MHz of memory on any CPU, it just slows down if needed. In this case you can totally use 2666MHz kit on 9900k, no matter if it's actually 2666 or lower frequency when in use. Since Z chipset boards support overclocking you can even go past 2666.

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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https://linustechtips.com/topic/1020730-ram-compatibility/#findComment-12186016
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To be completely honest. In your situation you should just got for something around 3200.... If you want your computer to be amazing and last you that long. Saying you don't really have a budget from the i9 you posted. That would be the best, or something just higher end? Bet luck on building!

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https://linustechtips.com/topic/1020730-ram-compatibility/#findComment-12186018
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