Intel Pentium 4 HT (Prescott)
Intel Core i7-4790K (Haswell)
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Right Answer: AMD FX-4170 (Bulldozer)
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Chips consisting of Intel’s Pentium 4 series might be overclocked beyond 4GHz before the arrival of AMD’s Bulldozer series, it was an AMD’s FX chip that marked the launching of the very first factory-clocked processor above 4 GHz years later on.
The very first CPU to reach a clock speed of 4 GHz was the Pentium 4 570 launched in November 2004 as part of Intel’s NetBurst microarchitecture, however this turning point wasn’t attained out of package. The Pentium 4 570 had a base clock speed of 3.8 GHz and might be overclocked to go beyond 4 GHz, which amassed substantial attention at the time. The main 4 GHz design, which was at first prepared for the exact same architecture, was canceled due to heat and power usage concerns.
The AMD FX-4170 was the very first customer desktop CPU to reach 4 GHz out of package with no requirement for overclocking. This chip launched in early 2012 clocked at 4.2 GHz from factory, including 4 cores and 4 threads, it utilized the AM3+ socket and had a Thermal Design Power (TDP) score of 125W. Prior to the FX-4170, AMD had actually delivered the FX-6200 in December 2011, which featured a basic 3.8 GHz clock that might improve to 4.0 – 4.1 GHz, however it didn’t reach the 4 GHz mark at its base frequency.
In 2013, AMD followed up with the Piledriver architecture, that included numerous chips clocked above 4 GHz. The most popular of these was the AMD FX-9590, which boasted a base frequency of 4.7 GHz and a turbo frequency of 5.0 GHz, making it the very first factory-shipped processor to reach a 5 GHz clock speed. This relocation was mostly viewed as an effort to remain competitive versus Intel’s Core series throughout that duration.
Intel’s very first customer processor to be offered with a clock speed of 4 GHz or greater was the Core i7-4790K, released in 2014 as part of the Haswell Refresh, likewise called the “Devil’s Canyon” series. This processor was especially noteworthy for its better thermal user interface product, which enabled much better overclocking headroom– while the business’s 2017 Kaby Lake series likewise had a handful of parts delivered with a stock frequency at or above 4GHz.
A year later on, in 2018, Intel commemorated the 40th anniversary of its renowned 8086 processor by releasing the minimal edition Core i7-8086K. This 6-core/12-thread CPU was Intel’s very first to reach a 5.0 GHz turbo frequency without overclocking, even more strengthening its tradition in the high-performance desktop market.