INTEL

Intel Core i9-11900KB

Intel processor specifications and benchmark scores

8
Cores
16
Threads
5.3
GHz Boost
65W
TDP
🔓Unlocked 🖥️Integrated GPU

Intel Core i9-11900KB Specifications

⚙️

Core i9-11900KB Core Configuration

Processing cores and threading

The Intel Core i9-11900KB features 8 physical cores and 16 threads, which directly impacts multi-threaded performance in CPU benchmarks. More cores allow the processor to handle parallel workloads efficiently, improving performance in video editing, 3D rendering, and multitasking scenarios. Thread count determines how many simultaneous tasks the CPU can process, with higher thread counts benefiting productivity applications and content creation workflows.

Cores
8
Threads
16
SMP CPUs
1
⏱️

i9-11900KB Clock Speeds

Base and boost frequencies

Clock speed is a critical factor in Core i9-11900KB benchmark performance, measured in GHz. The base clock represents the guaranteed operating frequency, while the boost clock indicates maximum single-core performance under optimal conditions. Higher clock speeds translate to faster single-threaded performance, which is essential for gaming and applications that don't fully utilize multiple cores. The Core i9-11900KB by Intel can dynamically adjust its frequency based on workload and thermal headroom.

Base Clock
3.3 GHz
Boost Clock
5.3 GHz
Multiplier
33x 🔓
💾

Intel's Core i9-11900KB Cache Hierarchy

L1, L2, L3 cache sizes

Cache memory is ultra-fast storage built directly into the i9-11900KB processor die. L1 cache provides the fastest access for frequently used data, while L2 and L3 caches offer progressively larger storage with slightly higher latency. Larger cache sizes significantly improve CPU benchmark scores by reducing memory access times. The Core i9-11900KB's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.

L1 Cache
80 KB (per core)
L2 Cache
1.25 MB (per core)
L3 Cache
24 MB (shared)
🏗️

Tiger Lake Architecture & Process

Manufacturing and design details

The Intel Core i9-11900KB is built on Intel's 10 nm manufacturing process, which determines power efficiency and thermal characteristics. Smaller process nodes allow for more transistors in the same space, enabling higher performance per watt. The architecture defines how the processor handles instructions and manages data flow, directly impacting benchmark results across different workload types. Modern CPU architectures like the one in i9-11900KB incorporate advanced branch prediction and out-of-order execution for optimal performance.

Architecture
Tiger Lake
Codename
Tiger Lake-H
Process Node
10 nm
Foundry
Intel
Die Size
190 mm²
Generation
Core i9 (Tiger Lake-H)
🔢

Tiger Lake Instruction Set Features

Supported CPU instructions and extensions

The Core i9-11900KB by Intel supports various instruction set extensions that enable optimized performance for specific workloads. SIMD instructions like SSE and AVX accelerate multimedia, scientific computing, and AI workloads by processing multiple data points simultaneously. Features like AES-NI provide hardware-accelerated encryption, while AVX-512 (if supported) enables advanced vector processing for data centers and high-performance computing. These instruction sets are critical for software compatibility and performance in modern applications.

MMX
SSE
SSE2
SSE3
SSSE3
SSE4.1
SSE4.2
AVX
AVX2
AVX-512
FMA3
SHA
AES-NI
F16C
BMI1
BMI2
Intel 64
VT-x
VT-d
🔌

i9-11900KB Power & Thermal

TDP and power specifications

The Intel Core i9-11900KB has a TDP (Thermal Design Power) of 65W, indicating the cooling solution required for sustained operation. TDP affects both system power consumption and the type of cooler needed. Lower TDP processors are ideal for compact builds and laptops, while higher TDP chips typically offer better sustained performance in demanding CPU benchmarks. Understanding power requirements helps ensure your system can deliver consistent performance without thermal throttling.

TDP
65W
Tj Max
100°C
🔧

Intel BGA 1787 Platform & Socket

Compatibility information

The Core i9-11900KB uses the Intel BGA 1787 socket, which determines motherboard compatibility. Choosing the right platform is essential for building a system around this processor. The socket type also influences available features like PCIe lanes, memory support, and upgrade paths. When comparing CPU benchmarks, ensure you're looking at processors compatible with your existing or planned motherboard to make informed purchasing decisions.

Socket
Intel BGA 1787
Chipsets
QM580, HM570, WM590
PCIe
Gen 4, 20 Lanes(CPU only)
Package
FC-BGA16F
DDR5

Intel BGA 1787 Memory Support

RAM compatibility and speeds

Memory support specifications for the i9-11900KB define which RAM types and speeds are compatible. Faster memory can significantly improve CPU benchmark performance, especially in memory-intensive applications and gaming. The memory controller integrated into the Core i9-11900KB determines maximum supported speeds and channels. Dual-channel or quad-channel memory configurations can double or quadruple memory bandwidth, providing noticeable performance gains in content creation and scientific workloads.

Memory Type
DDR4
Memory Bus
Dual-channel
Memory Bandwidth
51.2 GB/s
🖥️

Intel's Core i9-11900KB Integrated Graphics

Built-in GPU specifications

The Intel Core i9-11900KB includes integrated graphics, eliminating the need for a dedicated GPU in basic computing scenarios. Integrated graphics are ideal for office productivity, video playback, and light gaming. While not designed for demanding GPU benchmarks, the iGPU in the i9-11900KB provides hardware video encoding and decoding capabilities. This makes the processor suitable for compact builds, HTPCs, and systems where power efficiency is prioritized over gaming performance.

iGPU
UHD Graphics 750
Graphics Model
UHD Graphics 750
📦

Core i9-11900KB Product Information

Release and pricing details

The Intel Core i9-11900KB is manufactured by Intel and represents their commitment to delivering competitive CPU performance. Understanding the release date and pricing helps contextualize benchmark comparisons with other processors from the same generation. Launch pricing provides a baseline for evaluating value, though street prices often differ. Whether you're building a new system or upgrading, the Core i9-11900KB by Intel offers a specific balance of performance, features, and cost within Intel's product lineup.

Manufacturer
Intel
Launch Price
$539
Market
Mobile
Status
End-of-life
Part Number
SRKU4
Bundled Cooler
Yes

Core i9-11900KB Benchmark Scores

cinebench_cinebench_r15_multicoreSource

Cinebench R15 multi-core renders a complex 3D scene using all CPU threads simultaneously. This test reveals how Intel Core i9-11900KB performs in parallel rendering workloads.

cinebench_cinebench_r15_multicore #421 of 1788
1,958
13%
Max: 14,978

cinebench_cinebench_r15_singlecoreSource

Cinebench R15 single-core measures the speed of one CPU thread rendering 3D geometry. This score indicates how Intel Core i9-11900KB handles tasks that can't be parallelized.

cinebench_cinebench_r15_singlecore #420 of 1245
276
13%
Max: 2,114

cinebench_cinebench_r20_multicoreSource

Cinebench R20 multi-core uses a scene requiring 4x more computational power than R15. This test better reflects modern CPU capabilities for professional rendering on Intel Core i9-11900KB. The more demanding workload provides better differentiation between current-generation processors. Content creators and 3D artists use this benchmark to estimate real-world render performance.

cinebench_cinebench_r20_multicore #421 of 1788
8,161
13%
Max: 62,412

cinebench_cinebench_r20_singlecoreSource

Cinebench R20 single-core tests one thread against a more demanding scene than R15. This reveals the true single-thread rendering capability of Intel Core i9-11900KB. The increased complexity provides more accurate performance differentiation between modern CPUs. Single-thread performance remains critical for gaming and applications with serial bottlenecks.

cinebench_cinebench_r20_singlecore #421 of 1784
1,152
13%
Max: 8,811

cinebench_cinebench_r23_multicoreSource

Cinebench R23 multi-core is the current standard for CPU rendering benchmarks with a 10-minute minimum runtime. This extended test reveals sustained performance of Intel Core i9-11900KB after thermal limits kick in. The longer duration exposes cooling limitations that shorter benchmarks miss. Professional users rely on R23 scores to predict real-world rendering performance under sustained workloads.

cinebench_cinebench_r23_multicore #421 of 1788
19,432
13%
Max: 148,601
Compare with other CPUs

cinebench_cinebench_r23_singlecoreSource

Cinebench R23 single-core measures sustained single-thread performance over 10 minutes. This reveals how Intel Core i9-11900KB maintains boost clocks under continuous load. The extended runtime shows whether thermal throttling affects single-core performance. This score is particularly important for understanding real-world responsiveness beyond initial boost behavior.

cinebench_cinebench_r23_singlecore #421 of 1788
2,743
13%
Max: 20,979

About Intel Core i9-11900KB

The Intel Core i9-11900KB chip delivers high performance with its 8-core, 16-thread architecture built on the Tiger Lake-H platform using a 10 nm process. Designed for demanding workloads, this Core i9 processor offers a base clock speed of 3.30 GHz and a boosted turbo frequency of 5.30 GHz, balancing power efficiency and raw computational power. Its 65W TDP ensures thermal performance remains manageable in compact or high-performance systems, while the Intel BGA 1787 socket provides stability for long-term usability. Priced at $539 at launch, the i9-11900KB positions itself as a premium entry in its generation, targeting creators, gamers, and professionals seeking top-tier multitasking and rendering capabilities without compromising on energy efficiency. The i9-11900KB excels in multicore and single-core benchmarks, delivering 19,432 points in Cinebench R23 multicore testing and 2,743 points in R23 single-core evaluations. These results highlight its robust handling of complex tasks, from video editing to gaming, while scores like 8,161 in Cinebench R20 multicore and 1,958 in R23 multicore underscore its consistency across workloads. Even specialized tests, such as Cinebench R20 and R15 multicore benchmarks, reinforce its reliability in both productivity and creative applications. Such performance makes the i9-11900KB a standout for users prioritizing peak multitasking and responsiveness. While the i9-11900KB’s launch price of $539 reflects its premium status, its value proposition lies in its compatibility with Tiger Lake-H motherboards and upgrade potential for systems supporting the Intel BGA 1787 socket. Users seeking future-proofing can consider pairing it with newer Z690 or B660 chipsets to leverage emerging technologies without immediate hardware overhaul. This processor is ideal for content creators, engineers, and gamers constrained by budget but demanding high performance. Its 24 MB of shared L3 cache ensures efficient data access, minimizing latency during intensive tasks. For those building or upgrading systems, the i9-11900KB offers a compelling blend of affordability and power, making it a top choice in its price bracket.

The AMD Equivalent of Core i9-11900KB

Looking for a similar processor from AMD? The AMD Ryzen 9 8945HX offers comparable performance and features in the AMD lineup.

AMD Ryzen 9 8945HX

AMD • 16 Cores

View Specs Compare

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