Despite plenty of Intel CPUs getting around the 4GHz mark the i7-5820K is 3.3GHz at default, with a turbo of 3.6GHz. Six hyperthreaded cores of goodness, but capable of being run in the latest X99 motherboards with their tasty DDR4 memory.ĭoes it blur the lines between gaming and enterprise solutions or is it a jack of all trades?Īs with most CPUs these days the two numbers that count are the amount of cores, six, and the speed at which those cores run. This returns to the territory first marked out by the i7-970 and dealt with well in the initial LGA2011 range of CPUs by being a hex core. Naturally when you're slashing two thirds off the price some things have got to go, and with the i7-5820K the most noticeable thing is two of the cores. If you've been looking with envious eyes at the Haswell-E range topping Core i7-5960X but your wallet cannot stand the hit, then like many of us you'll be casting your glance further down the wealth of processors to find one more suited to your pocket. And when (in reality, if) the CPU-centric workload relies on single-threaded performance, Devil's Canyon's fast clock rate should not be overlooked.There are plenty of interesting things about the X99 chipset, not least of which is the inclusion of DDR4 support.
At stock speeds, the performance difference depends on a software suite's preference between cores/cache and frequency. The underlying story from our CPU-heavy tests is that an overclocked Haswell-E 5820K is considerably faster than a frequency-boosted 4790K in multi-threaded workloads. That means you can add a third onto the conversion time of your game and holiday videos when using an overclocked 4790K, as opposed to the 5820K. Overclocking both chips extends the six-core Haswell-E part's lead to an impressive 32%. Two additional cores and 7MB more cache combine to overcome the 0.8GHz frequency deficit and give the stock-clocked 5820K an 11.5% performance lead over the reference 4790K. Handbrake‘s media conversion workload loves threads, speed, and cache, so it comes as no surprise to see Haswell-E chips leading the pack (excluding the stock-clocked 5820K). The 4790K is about seven-and-a-half percent faster than the 5820K when both are overclocked. Overclocking the chip to 4.5GHz does help it leapfrog the 4960X and 5960X flagships, but Devil's Canyon's speedy clock rate and high performance DDR3 keep it cemented to the top two positions. High clock speed and fast, low-latency memory keep the Devil's Canyon chip out in front for the single-threaded test.Ī low CPU clock speed and loose timings for its 2400MHz DDR4 hinder the 5820K's performance in Super Pi. High-end Desktop processor released in 2014 with 6 cores and 12 threads. The 5820K outperforms a 4790K by about 18% in the stock multi-threaded test – a lead that extends to 36% when both chips are overclocked. Intel Core i7-5820K CineBench R15 SingleThreaded. Overclocked to the same frequency as our 4960X, and the Haswell micro-architecture shows its underlying improvements with performance gains in the single- and multi-threaded tests.
We measured the average frame rate achieved for a task of converting a 4.36GB 720P H.264 movie (in the MKV container) to one in the MP4 container.Īt its 3.6GHz MCT speed, the twelve-thread 5820K performs almost identically to IVB-E's flagship in Cinebench. We used the 32M test in Super Pi to analyse single-threaded performance. The benchmark also shows noticeable scaling with clock frequency and cache size. We used the ‘CPU’ test built into Cinebench R15.Ĭinebench is effectively optimised to scale its workload across a CPU's threads.