i5 6400 oc - Can they all oc?
i5 6400 oc - Can they all oc?
People have noticed that some 6400 models can reach speeds above 4ghz in certain cases. As mentioned before, these outcomes depend entirely on the hardware and components used. These results aren’t assured, but I believe a 3.2ghz speed would be quite easy and still offers a solid improvement over the 6500. Only two boards are currently confirmed to support overclocking with locked chips: Fatal1ty B150 Gaming K4/Hyper and Fatal1ty H170 Performance/Hyper. These models have distinct clock speeds for their CPUs, which means overclocking won’t impact stability elsewhere in the system. While I mostly agree with Chugalug’s suggestions, I think the 6400 was intentionally limited to a lower clock speed to provide a balance between performance and reliability for business or general use. I’d say it’s likely just a standard 6500 that’s been capped at a lower frequency. Yes, the 6400 chips are probably lower quality, so overclocking will be much more limited. This might have been the challenge I faced when trying to push the 6400 for a build—possibly due to voltage issues with non-K chips. The 6500 could offer better overclocking potential, but be cautious; results can vary widely. If you’re looking to save money, now seems like a reasonable choice after some clarifications. Opt for the i5 6500 and H170 Hyper, aiming for a moderate boost around 4.3 or 4.4GHz, and avoid going too far to prevent damaging your chip!
I am looking to purchase an i5 6400 and OC it! I discovered some used ones on eBay and I’m feeling tempted to buy one of these units. My concern is whether all of them can handle OC. I understand that the motherboard and BIOS version are crucial, so even with a capable motherboard, would any i5 6400 be able to overclock at 100%? Non-K works well on Z170 boards with Non-K OC enabled BIOS. The ability is gradually improving for other chipsets too: I currently use an i3 6100 on an MSI Z170M and there are many BIOS options for other brands.
The goal here is simply to reduce expenses. I can purchase a used i5 6400 for 120 euros, while a new one would cost 170 euros. The rest—such as the motherboard and DDR4 RAM—seems like a better deal. A new i5 6600k is around 240 euros.
I’ve seen various guides, and most of them report positive outcomes or at least highlight successful cases. I recognize that Intel may discourage people from buying these non-K processors because they incur losses, which pushes users toward the higher-end models with BIOS disabling and microcode updates (what exactly are those?).
I’m trying to find a cost-effective option since I’m always on a budget. If you don’t need detailed explanations or examples, please refrain from replying, as we’re wasting time.
What country do you reside in, and what is your overall budget for CPU, motherboard, and RAM?
Please don’t be rude; I don’t think I’d want to assist someone who refuses to listen or lacks knowledge. You can either let others correct you or ignore it and make an uninformed choice based on your own perspective.
I’m just attempting to help you make the most financially sensible decision. Don’t be upset about it. I’ve explained why overclocking non-K processors isn’t advisable above all. Please re-read that.
I live in Germany and am an immigrant, so you understand the situation. I’m not wealthy. Anyway...
I’m uncertain how I ended up being blunt or arrogant by asking for proof or specific examples. Usually, I conduct research before buying new products and don’t accept someone’s unsubstantiated claims as answers. I believe it’s your responsibility here, as I made it clear in my second post. The issue right now is that I don’t have much time to do thorough research, so I’d appreciate some more detailed information since all the results I’ve seen are about overclocking non-K processors—which I understand may not always be accurate.
I use the website idealo.de with my limited German language skills to purchase new items. My budget is as low as possible for good value. If I have to spend 400 euros on a Skylake, I could wait a bit longer for a Zen model and then decide.
Dimster123 shared their thoughts on the topic, focusing on cost-saving opportunities. They mentioned purchasing a used i5 6400 for 120 euros instead of a new one priced at 170 euros, and noted that other components like the motherboard and DDR4 RAM would further improve the overall value. They referenced guides suggesting positive results from users, though acknowledging that some examples might be exaggerated. Dimster123 expressed frustration with Intel's policies on overclocking non-K processors, which they believe limit consumer choices. They emphasized their budget constraints and urged others to avoid being overly critical without solid evidence. The conversation also touched on personal experiences, such as using the website idealo.de for purchases and considering an i3 processor for better value. Dimster123 highlighted the importance of informed decisions and respecting others' perspectives.
Consider that increasing the base clock can quickly limit your DDR4 frequency options since the smallest divider is 2133.
For instance, to reach a 4.6GHz CPU with an i5-6400, you must boost the base clock to 170.4MHz, which pushes DDR4-2133 up to 3634MT/s—clearly beyond what most standard kits can support.
When choosing a RAM upgrade, it might be more economical to opt for a slightly higher clocked i5-6500 instead, as it begins with a higher base frequency and requires less speed RAM to hit the same CPU speed.
For example, with an i5-6500 you’d need to raise the base clock to 143.8MHz, allowing DDR4-2133 to operate at 3066MHz—an easier adjustment thanks to better RAM headroom.
So far thank you all for your information. Yes, I understood about DDR4 timings and non-K OC but it wasn't very clear. Thanks again for the examples—it really makes sense now. I should read a bit more about BCLK too, although it seems straightforward. I also know ASRocks is one of the few motherboard makers that didn’t remove Intel’s BIOS OC features. ASRock, by the way, is cool. I hope they offer some good power phase mobos or not? It doesn’t seem to matter much for OC CPUs.
Power management isn't the main issue here, especially on the AMD side. The challenges with these Intel chips come from the internal TIM and the dense packaging that makes heat dissipation more difficult. The math behind base clock overclocking is simple, but many people struggle with memory tuning. If you can't master manual timing adjustments, you're likely to encounter problems. This happens often, even among moderators and editors. Make sure you thoroughly understand how to adjust all timings, not just the initial ones. Seeing success comes from carefully balancing RAM frequency and timings: Experiencing failure often stems from incorrect AUTO settings: I personally adjusted my i3-6100 to 4.6GHz, but it required a lot of time to get each setting stable. I'd love to try a Skylake Celeron and push it to 5GHz or higher, which should be simpler thanks to the less crowded CPU package.
I want to learn more about Intel micro updates. I already know they restrict non-K CPUs from overclocking, but I’m curious about the details. How does it actually function? Is it a secret update similar to Windows updates? Does it modify the CPU itself or just software? Can I stop this update? Are there any tools or scripts that help prevent it?
I believe it gets included in the Bios. Certain motherboards let you go back to a previous Bios that supports Bclock overclocking, while others do not.