Is the 6700k fixed voltage safe for everyday use?
Is the 6700k fixed voltage safe for everyday use?
I own an i7 6700k with an asrock z170 k6 motherboard. This configuration has been new for roughly a year. Until recently, I could maintain performance at 4.5-4.6ghz around 1.27v stable. Now, 4.6 only remains stable above 1.36v. I might still reach 4.5ghz with settings between 1.29 and 1.3, though I have some concerns. At stock configurations, the voltage rises to approximately 1.38v. I’ve checked forums before but haven’t found answers to my specific questions. I apologize if this feels like a repeated discussion.
1. Using constant voltage seems to be the most reliable method for stability. I keep the system running for over 15 hours daily, sometimes 24/7 for a few days. Would it be safe to maintain a fixed voltage around 1.29-1.3? I’ve enabled all power-saving options, yet with constant voltage the voltage core won’t drop. It only reduces in adaptive mode, which leads to stability problems. My Corsair H80i GT appears to handle cooling well enough.
2. Based on others’ experiences, would overclocking at this voltage level cause significant CPU wear, rendering it nearly unusable within a couple of years? I intend to preserve the CPU for about 4 to 5 years.
The biggest enemy here is heat, not necessarily voltage. If your processor is running 24/7 at full load, it's gonna degrade, however, if you're just running it 24/7 and gaming for a couple hours, downloading music or movies etc, it's not a worry. An H80i isn't the greatest cooler per se, but it should be adequate. If your full load temps stay under say 75C or so, you're probably all right for that processor to last quite a while, if you're hitting the 80s at all, that would be too high for me, I'd dial it back. I have a 6700K @ 4.6, adaptive, but I don't remember the settings off hand, not that it matters, every chip is different, but my temps peak around 71C but avg in the upper 60s at full load, I'm on a custom loop. What I did...
The biggest enemy here is heat, not necessarily voltage. If your processor is running 24/7 at full load, it's gonna degrade, however, if you're just running it 24/7 and gaming for a couple hours, downloading music or movies etc, it's not a worry. An H80i isn't the greatest cooler per se, but it should be adequate. If your full load temps stay under say 75C or so, you're probably all right for that processor to last quite a while, if you're hitting the 80s at all, that would be too high for me, I'd dial it back. I have a 6700K @ 4.6, adaptive, but I don't remember the settings off hand, not that it matters, every chip is different, but my temps peak around 71C but avg in the upper 60s at full load, I'm on a custom loop. What I did is set my multiplier, then dropped my voltage and slowly raised it until I was rock stable. It can take a day or more to get ideal settings, with mine I was in the .05 range slowly raising and running Realbench or Aida or Intel extreme tuning utility, and once I got close, just running programs and such for stability.
It's fine to keep your computer running at a steady voltage of around 1.3 to 1.35 for over 15 hours a day, especially if you're not using heavy applications and mostly just gaming for short periods while the temperature stays in the 60s. As long as it idles when you're not actively using it, it should work well and last several more years.
Yes, temperatures in the 60s under load will keep you safe at that voltage. Regarding its longevity, silicon performance is unpredictable—even without overclocking, it might last years, decades, or months. You can't accurately predict when it will fail, especially early on. I believe it will hold up for a while, as CPUs generally have a longer lifespan than the motherboard or storage drives, though certainty remains elusive.
Jossrik confirms the temperatures will stay in the 60s, suggesting it should be okay for years. He notes uncertainty about long-term reliability but expects traditional CPUs to last longer than components like motherboards or HDDs. He asks whether overclocking at that level would impact longevity, imagining a scenario where stock performance lasts five years and overclocks push it to three or four years.
I don't want to tell you that it will or won't cause there's no way to tell, it's not that if it will last exactly 5 years at stock will it degrade enough to make it unusable if you overclock, look at it more this way. When you bought the chip, it may last say, 13 years at stock, heavily overclocked running temps in the upper 70s it may last say 11 years. Or, when you bought the chip, the time frame may be 7 years, in this case, even at stock, it will only last 7 years. There's just *NO* way to tell. The hotter you run it, the shorter the lifespan will be, but to put any kind of time on that is impossible.
Also, regardless of how long you run it, the voltage will gradually increase to keep things stable, *but* this is hard to forecast. You might need a voltage adjustment after five years, or sooner if you run it for just one year. I prefer sticking to the warranty, though the processor tends to hold up well unless something fails and takes it away. A motherboard can fail easily, but the processor and memory are usually fine if they last. I tend to buy used parts only when necessary, since they often still work for a while.