Intel Core i9-11900K flagship CPU overclocked to 6.5 GHz on LN2

An Indian YouTube channel, PC Wale, has pushed the Intel Core i9-11900K Rocket Lake CPU beyond 6 GHz, which is the highest frequency we’ve seen the CPU work at before its launch next week. The Core i9-11900K CPU tested here was supplied by Intel as part of their review kit and therefore we can only see how often it achieves in the test configuration with no actual benchmarks in this crazy overclock.

Intel Core i9-11900K flagship Rocket Lake CPU overclocked to 6.5 GHz on LN2, tested on ASUS ROG Maximus XIII HERO motherboard with 1.7V

PC Wale claims that the CPUs (Core i9-11900K and Core i5-11600K) were supplied by Intel themselves and as such cannot provide any benchmarks, but since the LN2 results are not (a bit) restricted by the NDA, they continued to post the maximum frequency they achieved in their samples. Both CPUs are claimed to hit over 6 GHz, although only the Core i9-11900K is shown for the entire video that you can watch below.

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SafeDisk, a well-known overclocker from South Korea, provided the XOC BIOS, which allows to increase voltages up to 2V, and which also performs internal overclocking for ASUS. The board used was the ASUS ROG Maximus XIII HERO, which is also part of the reviewers kit sent by Intel. You can see that the testers were able to drive the Intel Core i9-11900K up to 6.5 GHz with a voltage supply of 1.7V.

They also tried to push the CPU beyond 6.5 GHz, but that resulted in a hard crash. The testers also mention that they could have gone above 7 GHz, but the BIOS in its current state is flimsy at best, so they would wait after launch for things to improve. We can also expect more professional overclockers to post their own LN2 results on the Intel Core i9-11900K CPU launch which is March 30th.

Intel Core i9-11900K 8-Core 16-Thread Rocket Lake Desktop CPU

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The Intel Core i9-11900K will be the flagship of the 11th Gen Rocket Lake desktop CPU. The chip will have 8 cores and 16 threads. This will result in 16 MB of L3 cache (2 MB per core) and 4 MB of L2 cache (512 KB per core). In terms of boost clocks, we’ve already seen that the CPU operates at base frequencies of 3.5 GHz, but in terms of boost, the CPU will boast a maximum boost clock of 5.2 GHz (1 core) while running. it will maintain the pulse frequency of all cores. at 4.8 GHz.

The chip will also feature Thermal Velocity Boost, which should offer a 100 MHz jump in maximum clock frequency. This should lead to a 5.3 GHz single-core boost clock, making it the first CPU to hit such a high clock rate out of the box. However, remember that regardless of using the Cypress Cove cores, the Core i9-11900K will feature lower cores and threads than the Intel Core i9-10900K. This is partly due to the backporting of Cypress Cove on the refined 14nm process node.

The CPU is said to feature a 125W first stage power limit which is standard for an Intel flagship SKU and the second stage or PL2 power limit is rated at 250W. This means that when it reaches its advertised maximum clock speeds, the CPU could be drawing that amount of power from the power supply, making it one of the most power-hungry 8-core chips ever produced. This could also explain why Intel didn’t have 10 cores and 20 threads in its 11th gen lineup, as it would have turned out to be a power-hungry monster of a chip that exceeds even the 250W power limit.

11th Gen Intel Rocket Lake Desktop CPU Range Specifications (Preliminary):

CPU name Cores / Threads Base clock Boost Clock (1 Core) Boost Clock (All-Core) Cache Graphics TDP (PL1) TDP (PL2) Price
Core i9-11900K (F) 8/16 3.50 GHz 5.30 GHz 4.80 GHz 16 MB Intel Xe 32 EU (256 cores) 125W 251W 539 US dollars (thousands)
513 US dollars (KF)
Core i9-11900 (F) 8/16 2.50 GHz 5.20 GHz 4.70 GHz 16 MB Intel Xe 32 EU (256 cores) 65W 224W 439 US dollars
US $ 422 (F)
Core i9-11900T 8/16 1.50 GHz 4.90 GHz 3.70 GHz 16 MB Intel Xe 32 EU (256 cores) 35W 115W 439 US dollars
Core i7-11700K (F) 8/16 3.60 GHz 5.00 GHz 4.60 GHz 16 MB Intel Xe 32 EU (256 cores) 125W 251W $ 399 US dollars (thousands)
US $ 374 (F)
Core i7-11700 (F) 8/16 2.50 GHz 4.90 GHz 4.40 GHz 16 MB Intel Xe 32 EU (256 cores) 65W 224W $ 323 dollars
US $ 298 (F)
Core i7-11700T 8/16 1.40 GHz 4.60 GHz 3.60 GHz 16 MB Intel Xe 32 EU (256 cores) 35W 115W $ 323 dollars
Core i5-11600K (F) 6/12 3.90 GHz 4.90 GHz 4.60 GHz 12 MB Intel Xe 32 EU (256 cores) 125W 224W? 262 US dollars (thousands)
237 US dollars (KF)
Core i5-11600 6/12 2.80 GHz 4.80 GHz 4.30 GHz 12 MB Intel Xe 32 EU (256 cores) 65W 154W 213 US dollars
Core i5-11600T 6/12 1.70 GHz 4.10 GHz 3.50 GHz 12 MB Intel Xe 32 EU (256 cores) 35W 92W 213 US dollars
Core i5-11500 6/12 2.70 GHz 4.60 GHz 4.20 GHz 12 MB Intel Xe 32 EU (256 cores) 65W 154W 192 US dollars
Core i5-11500T 6/12 1.50 GHz 3.90 GHz 3.40 GHz 12 MB Intel Xe 32 EU (256 cores) 35W 92W 192 US dollars
Core i5-11400 (F) 6/12 2.60 GHz 4.40 GHz 4.20 GHz 12 MB Intel Xe 24 EU (192 cores) 65W 154W US $ 182
157 USD (F)
Core i5-11400T 6/12 1.30 GHz 3.70 GHz 3.30 GHz 12 MB Intel Xe 24 EU (192 cores) 35W 92W US $ 182

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