You're not happy with your 8600k, but you want advice on what to do next.
You're not happy with your 8600k, but you want advice on what to do next.
Hello, roughly twelve days ago I purchased a 8600k. In Denmark we have fourteen days to decide if we should return our orders and they offer (sometimes the full amount) a refund if the condition isn't met, usually due to a loss of up to 15% of the CPU value.
I've been quite let down by the performance of my chip. I've managed 1.4v unstable at 4.7ghz with 4.2 cache at 100 bclk, but I'm struggling to achieve any meaningful overclock. I'm thinking about sending it back via RMA just in case, since it feels like a high probability that a better chip exists. Even though I risk losing more than 15%, I believe it's worth trying if I can improve the clock speeds. This situation is really unsettling for me.
Can you confirm whether I received an objectively poor chip, and if not, is there another reason this might be happening—perhaps due to my overclocking or something else in the system?
I have an Asrock Extreme4 Z370, a G.Skill 16GB 3200mhz model running at 2133mhz without XMP Profile, so that it shouldn't be the main issue. I also have a NH D-15 cooler and a GTX 1070 Gigabyte G1 Gaming with a 1000w Corsair modular PSU from about five to six years ago.
I thought you mentioned being at 5.0 at 1.3. I tested my i5 8600k at 5.0 with a 3.6 vcore. In-game performance was solid during bf1, but prime95 caused temperatures to rise close to 90c. Using avx instructions helped reduce the heat. I adjusted the clock speed down to 4.8ghz until I got a better cooler. My H100i v2.0 struggles to handle prime for more than an hour.
I had a debate with someone about how long stability is needed in prime to judge a build. They suggested 24 hours, but I think that’s too long. Still, I believe two minutes isn’t enough to truly test stability. Cinebench gives some data, but it doesn’t accurately reflect overall system performance. Here are a couple of screenshots for reference.
This was while playing battlefield 1...
It seems you didn't do very well in the silicon lottery. If timing matters to you, you might want to look into pre-binned chips from sites like siliconlottery.com. If you're willing to try, sending it back could be an option. In the US, most stores don't accept returns for CPUs due to this concern—people often send them back if they're dissatisfied with an overclock that isn't guaranteed at the time of purchase.
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About 12 days ago I purchased an 8600k. In Denmark we have 14 days to decide if we regret our purchase and they may refund us, sometimes the full amount depending on the condition you send it back in.
I’ve felt quite let down by the performance of my chip. I’ve managed 1.4v unstable at 4.7ghz with 4.2 cache at 100 bclk, but I’m struggling to achieve any meaningful overclock from this unit. I’m seriously thinking about initiating a return because it seems like a much better option is available, even though I could lose up to 15% of the CPU value. This situation is really concerning for me.
Could there be any way to verify that I received a chip with poor specifications and that the issue isn’t due to my overclocking or another part in the system?
I own an Asrock Extreme4 Z370, G.Skill 16GB 3200mhz RAM, running without XMP at 2133mhz to avoid instability.
I also have a NH D-15 cooler, a GTX 1070 Gigabyte G1 Gaming, and a 1000w Corsair modular PSU from about 5-6 years ago.
Currently, my 8600k is running stably at 4.9GHz with less than 1.3vcore. I have a decent CPU cooler and RAM. The first step would be to reset the BIOS to default settings, then adjust the CPU multiplyer to 47 and set XMP to 1 for 3200MHz, leaving other parameters in auto mode. Please report back the temperatures after a two-minute Prime95 run version 26.6. Once that’s done, we can gradually increase the frequency.
Hold on, I’ve got the 8600K running stable at 4.9GHz with under 1.3vcore. You have a solid CPU cooler and good RAM. The first step would be to reset the BIOS back to defaults, then adjust the CPU multiplyer to 47 and set the XMP profile to 1 for 3200MHz—leave the rest in auto. Please report the temperatures after a two-minute Prime95 version 26.6 run. After that, we can gradually increase it.
Cache 45, LLC - High and version Prime95 v26.6 fails to load Intel CPUs with AVX instructions on my Gigabyte z370 Ultra Gaming board.
I also changed it to an offset mode instead of fixed or auto on the vcore. You might be unlucky, but I’d suggest giving it another attempt—at least up to version 4.8 with a relatively low vcore should work fine.