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Intel’s 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 above 6 GHz, which is the highest frequency we have seen the CPU run on before the launch next week. The Core i9-11900K CPU tested here was provided by Intel as part of its reviewer set, and therefore we only get to see the frequency achieved on the test setup without actual references to this insane 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 1.7 V

PC Wale states that processors (Core i9-11900K and Core i5-11600K) were provided by Intel itself, and as such they can not provide any references, but since the LN2 results are (quite) not limited by NDA, they continued to add out the maximum frequency they achieved on their samples. It is stated that both processors hit above 6 GHz, but only the Core i9-11900K appears during the entire video, as you can see below.

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

They also tried to push the CPU past 6.5 GHz, but it resulted in a hard crash. The testers also mention that they could have gone past 7 GHz, but the BIOS in its current state is at best flimsy, so they would wait after the launch for things to get better. We can also expect more pro overclockers to post their own LN2 results at the launch of the Intel Core i9-11900K CPU on 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 11th generation Rocket Lake Desktop CPU. The chip will contain 8 cores and 16 threads. This will result in 16 MB L3 cache (2 MB per kernel) and 4 MB L2 cache (512 KB per kernel). When it comes to boost clocks, we have already seen that the CPU runs with base frequencies of 3.5 GHz, but when it comes to boost, the CPU will have a maximum boost clock of 5.2 GHz (1-core) while the all-core boost frequency will be maintained at 4.8 GHz.

The chip also has Thermal Velocity Boost which will deliver a 100 MHz jump in maximum clock frequency. This should lead to a single core boost clock of 5.3 GHz, making it the first CPU to ever hit such a high frequency out of the box. Keep in mind, however, that regardless of whether you use the Cypress Cove cores, the Core i9-11900K will have lower cores and threads than the Intel Core i9-10900K. This is due in part to the porting of Cypress Cove on the refined 14 nm process node.

CPU is said to have a 1st stage power limit of 125W, which is standard for a flagship Intel SKU, and 2nd stage power limit or PL2 is rated at 250W. This means that when the CPU reaches the maximum advertised clock speed, the CPU can actually draw the said amount of watts from the PSU, making it one of the most power-consuming 8-core chips ever produced. This may also explain why Intel did not go with 10 cores and 20 wires in its 11th generation, since it would have turned out to be a power-hungry monster of a chip that broke even beyond the 250W power limit.

11th Generation Intel Rocket Lake Desktop CPU Setup 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 USD 539 US (K)
USD 513 US (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
$ 422 US (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
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 (K)
$ 374 US (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 US
USD 298 US (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 US
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? USD 262 US (K)
USD 237 US (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
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
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
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
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 $ 182 US
$ 157 US (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 $ 182 US




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