Running at the standard RAM frequency (2133) rather than the specified 3000 MHz.
Running at the standard RAM frequency (2133) rather than the specified 3000 MHz.
Hi, I have the Corsair Vengeance LPX 8GB RAM with 2x4GB, DDR4 DRAM at 3000MHz (PC4-24000) and C15 Memory Kit in black. My ASUS ROG STRIX B250F motherboard supports gaming LGA1151 DDR4 with USB 3.1 and HDMI/DVI/M.2 ATX, and it has an i5 7600K processor. I recently learned the RAM only runs at a maximum of 2400MHz. The issue is that it doesn’t even reach that speed. I’ve flashed the latest BIOS (version 0606) but there are still problems. I can’t overclock past the CPU boost speed of 4200GHz. I set the BIOS to sync all cores and set cores to 42, which works fine. Trying 45 doesn’t work, and I haven’t tried 43 or 44. I’m wondering if there’s a setting I need to adjust, or if I should manually change voltage or timing. I plan to test 4400 and 4300GHz now. Thanks for your help—I really appreciate it.
For OC purposes you must satisfy three requirements. First, you need a 'K' type CPU like i5-7600K, not i5-7600. Second, you require a 'Z' model motherboard such as Z270, not B250. Third, you should have an aftermarket cooler sufficient to manage the extra heat from overclocking. You must meet all three to proceed.
Turn on X.M.P Profile. If that fails, another option is to raise the CPU clock, which might influence RAM performance.
Read what you learn reveals your motherboard chipset is B250F. This means it's a locked board that won't allow overclocking with any Intel CPU. The maximum turbo speed will be limited to the best setting across all four cores. Also, based on the chipset, your system can only support 2133 or 2400 MHz, with a 2133MHz limit for Skylake and a 2400MHz limit for Kabylake CPUs. Any RAM that performs better will be capped at those speeds. To reach 2400MHz with Kabylake, you might need to turn on XMP1, which should handle the voltage and timing automatically. If that's not an option, you'll have to use a program like CPU-Z and check the JadeC table for the correct timings, then manually adjust them.
Thanks, I thought a 250f would work well for Kaby Lake and could boost its speed.
For OC purposes you must satisfy three requirements. First, you need a 'K' type CPU like i5-7600K, not i5-7600. Second, you require a 'Z' model motherboard such as Z270, not B250. Third, you should have an aftermarket cooler sufficient to manage the extra heat from overclocking. You must meet all three to proceed.
On Intel cpus with BCLK limited to 103.5, the setting mainly affects RAM speeds and isn't much more than that. It's generally better to stick with 100.0. Asrock's open BIOS and certain MSI boards supported BCLK usage for higher OC in Skylake CPUs, but Intel's updates through Windows introduced microcode changes that reduced its impact, leading to lower sales of those models.