Our six processors fall within five watts of each other at idle—last-generation’s Core i7-2700K interestingly the second-place finisher.
Intel admits that it didn’t do much of anything to cut Ivy Bridge’s power consumption beyond its adoption of 22 nm lithography. It’s not surprising, then, that idle power use doesn’t really change compared to last generation.
Under load, however, the story is drastically different. A 10-minute Linkpack workload reveals 155 W maximum power consumption from our Core i7-2700K compared to 138 W on the Core i7-3770K. Incidentally, that’s just 1 W off from the 18 W separating Sandy Bridge’s 95 W TDP and Ivy Bridge’s 77 W ceiling.
Past explorations of overclocking show that tuning clock rate and upping voltage affect Ivy Bridge’s temperature much faster than Sandy Bridge’s. At stock settings, though, the difference isn’t as pronounced. And this is with the boxed cooler, too (not a big aftermarket model that’d dissipate heat more effectively).
- Four Ivy Bridge-Based Core i5 CPUs, Compared
- Lining Up The Contenders: Are There 95 W IVBs?
- Test Setup And Benchmarks
- Benchmark Results: PCMark 7
- Benchmark Results: SiSoft Sandra 2012
- Benchmark Results: Adobe CS 5.5 And Content Creation
- Benchmark Results: Productivity
- Benchmark Results: File Compression
- Benchmark Results: Media Encoding
- Benchmark Results: 3DMark 11
- Benchmark Results: 3DMark 11, Integrated Vs. Entry-Level Discrete
- Benchmark Results: Real-World Games
- Power Consumption And Max. Temperature
- Low-Power CPUs: Specific Applications Only