This processor delivers outstanding performance while maintaining high efficiency.
This processor delivers outstanding performance while maintaining high efficiency.
I've been using an i5-12400 6 SRL5Y for nearly a year on an Asus ROG Strix B760-i. I chose to move it onto a cheaper motherboard to free up space for an i9-12900k upgrade. I installed an ASRock B660M Pro RS, a Thermalright contact frame, and some affordable Crucial DDR4 RAM. Together with an RTX 4060 and a Blackmagic Intensity 4K, I built a TV recording rig. My Stream Deck shows wattage via HWInfo64, and I've never seen anything unusual before. Now it consistently stays in the single digits, even during video recording. During several hours of TV recording with Nvenc, the average came to about 5.9 watts—including preview display, graphics processing, hard drive writes, and the PCIE card. I looked up information and discovered there are two variants of the i5-12400; the SRL4V version is a reduced i7 that consumes significantly more power when idle. The i5-12400 SRL5Y is notably efficient for light tasks without any special features. It’s unclear if you’d find a better processor for a home server or similar applications, but performance really hinges on the chipset and motherboard. One additional note: hyperthreading is disabled on this system as well.
Intel CPUs provide estimated power usage rather than exact readings. Their numbers serve to manage the Turbo Boost feature. We can't ensure this calculated value matches real-world measurements under light load. Results may change based on the motherboard and whether you're using a Nvidia GPU. For instance, a 10-core CPU running all cores at 5000 MHz idle might show just 1.5W, which seems impressive but is essentially meaningless without context.
It seems unlikely. Running AMD AM4/Ryzen on a solid mainboard with low power use and BIOS access, without a dedicated GPU, typically stays around 8W during idle or office tasks. Adding a 12th-gen Intel processor and a GPU would push the total to nearly 5.9W.
Is this merely a scholarly label? Since running Cinebench on any Intel or AMD processor shows performance close to maximum power draw with minor fluctuations, your scenario appears plausible—around 6W could be reasonable.
@unclewebb Your question touches on several aspects of processor behavior and efficiency. The highlighting C0% likely refers to the CPU utilization percentage—essentially how busy the processor is. This directly impacts power usage because higher activity generally means more energy consumption. Regarding power reports, they track real-time draw versus idle states, so discrepancies can arise from software or hardware calibration. For visual proof, checking Intel’s RAPL (Real-Time API) logs on the hardware would show actual consumption values under different workloads. As for your laptop comparison: a quad-core i5-10210U at 4.2 GHz with 1.1V draws around 0.7–0.9W in idle, while a 10850K quad-core processor running at 5 GHz at 1.3V can reach similar or higher power levels despite more cores. Efficiency here comes from better voltage scaling and architectural optimizations, not just core count. The lower idle draw of your i5 likely stems from its design for balanced performance and power, especially with features like Turbo Boost managing power dynamically. Temperatures matter less in idle states since they’re minimal, but the core difference lies in how each architecture handles workload distribution. Your I-GPU is also efficient because it’s optimized for low-power operation, which aligns with its intended use case.
It was just the initial image I took from my Imgur profile. Skip the blue area around the C0% info. Focus on the 1.5W rating. You’re overlooking the key point. Intel claims power usage isn’t what it seems, and there are many variables affecting how this is reported. A chip meant for managing Turbo Boost won’t give reliable idle or light load readings. Comparing numbers from a 10-core processor to a low-power 10th Gen model is meaningless. The figures aren’t actual measurements—they’re calculated internally for turbo control. That’s the only accurate way to gauge power use.