Core i9-11900KB
Intel
PassMark
22,693
MSRP
$539
AVG Price
$350
Performance Spectrum - CPU
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
Overview
The Core i9-11900KB is manufactured by Intel. It was released in Maio 2021 (4 years ago). It is based on the Tiger Lake-H (2021) architecture. It features 8 cores and 16 threads. Base frequency is 3.3 GHz, with boost up to 4.9 GHz. L3 cache: 24 MB (total). L2 cache: 1.25 MB (per core). Built on 10 nm SuperFin process technology. Socket: FCBGA1787. Thermal design power (TDP): 65 Watt. Memory support: DDR4. Passmark benchmark score: 22,693 points. Launch price was $539.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Core i9-11900KB
FPS Benchmarks
Predicted performance for Core i9-11900KB across popular games. Tested paired with RTX 4090 to isolate CPU performance.
Baldur's Gate 3
Counter-Strike 2
Deadlock
Delta Force
Dota 2
League of Legends
Marvel Rivals
Path of Exile 2
Project Zomboid
Starfield
Technical Analysis
Detailed breakdown of Core i9-11900KB specifications and capabilities.
Processing Power
The Core i9-11900KB is a 8-core / 16-thread processor based on the Tiger Lake-H (2021) architecture, manufactured on a 10 nm SuperFin process node. It reaches a maximum boost clock of 4.9 GHz from a base frequency of 3.3 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. It carries 24 MB (total) of L3 cache, plus 1.25 MB (per core) of L2 cache and 80 kB (per core) of L1 cache per core. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 22,693, placing it in the Mid-Range performance tier as a Aging generation product. Cinebench R23 multi-core (measuring sustained rendering workload performance) scores 12,264.
| Specification | Core i9-11900KB |
|---|---|
| Cores / ThreadsPhysical/logical processing units | 8C / 16T |
| Max Boost ClockPeak single-core speed under boost | 4.9 GHz |
| Base ClockGuaranteed minimum operating frequency | 3.3 GHz |
| ArchitectureCPU microarchitecture design | Tiger Lake-H (2021) |
| Process NodeFabrication technology — smaller = more efficient | 10 nm SuperFin |
| L3 CacheShared cache — reduces memory latency for all cores | 24 MB (total) |
| L2 CachePer-core fast cache for frequently accessed data | 1.25 MB (per core) |
| L1 CacheUltra-fast per-core cache | 80 kB (per core) |
| Die SizePhysical silicon area of the processor | 190 mm2 |
| Bus SpeedData bus frequency | 8 GT/s |
| Max TemperatureMaximum safe operating temperature (Tjmax) | 100 °C |
| 64-bit Support | Yes |
| Windows 11 Compatible | No |
| Unlocked MultiplierWhether the CPU can be overclocked | Yes (Overclockable) |
| PassMark ScoreOverall multi-threaded benchmark score | 22,693 |
| Cinebench R23 MultiSustained multi-core rendering performance | 12,264 |
| Geekbench 6 MultiMulti-core parallel workload performance | 10,645 |
Memory & Platform
The Core i9-11900KB fits into the FCBGA1787 socket and supports PCIe 3.0 with 20 total PCIe lanes for expansion cards and storage. It supports DDR4 memory at speeds up to DDR4-3200 (faster RAM improves bandwidth-sensitive workloads), with a maximum capacity of 128 GB across 2 channels (dual-channel doubles bandwidth). Integrated graphics: Intel UHD Graphics — allows display output without a dedicated GPU, useful for troubleshooting and light tasks.
| Specification | Core i9-11900KB |
|---|---|
| TypeDesktop or Laptop processor | desktop |
| SocketMotherboard socket required | FCBGA1787 |
| PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth | PCIe 3.0 |
| PCIe LanesTotal available lanes for GPUs, NVMe drives, and expansion | 20 |
| RAM TypeSupported memory standard | DDR4 |
| Max RAM SpeedMaximum officially supported memory frequency | DDR4-3200 |
| Max RAM CapacityMaximum installable memory | 128 GB |
| RAM ChannelsDual-channel doubles bandwidth vs single-channel | 2 |
| ECC SupportError-Correcting Code memory — prevents data corruption | No |
| Integrated GPUBuilt-in graphics processor | Intel UHD Graphics |
| Compatible ChipsetsMotherboard chipsets that support this CPU | Mobile |
| Max CPUs in ConfigMulti-socket support for servers | 1 |
Advanced Features
It features an unlocked multiplier, allowing enthusiasts to overclock beyond stock frequencies for additional performance. It supports AVX-512 instructions — specialized SIMD operations that significantly accelerate AI inference, scientific computing, and video encoding workloads. Virtualization: VT-x, VT-d — enables running virtual machines efficiently (important for development and server workloads).
| Specification | Core i9-11900KB |
|---|---|
| OverclockingWhether CPU clock can be manually increased | ✅ Unlocked |
| AVX-512Advanced vector instructions for AI/ML workloads | ✅ Supported |
| VirtualizationHardware-assisted virtualization technology | VT-x, VT-d |
Power & Cooling
The Core i9-11900KB has a rated TDP (Thermal Design Power) of 65 Watt — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed. No stock cooler is included — you will need to purchase an aftermarket cooler separately. Recommended cooling: High-End Laptop Cooling.
| Specification | Core i9-11900KB |
|---|---|
| TDPThermal Design Power — heat output under sustained workload | 65 Watt |
| Max TemperatureMaximum safe junction temperature (Tjmax) | 100 °C |
| Included CoolerStock cooler bundled in the box | No |
| Recommended CoolerSuggested aftermarket cooling solution | High-End Laptop Cooling |
Value Analysis
At an average price of $350 (MSRP: $539), the Core i9-11900KB delivers 65 PassMark points per dollar. Performance ranking position: #656 out of all indexed processors.
| Specification | Core i9-11900KB |
|---|---|
| MSRPManufacturer's Suggested Retail Price | $539 |
| Avg Price (30d)Average market price over the last 30 days | $350 |
| Launch PriceOriginal retail price at launch | $539 |
| Performance RankPosition in overall performance ranking | #656 |
| Release DateLaunch date | Maio 2021 (4 years ago) |
| Release Year | 2021 |
| DesignerArchitecture designer (e.g. Intel, AMD) | Intel |
| ManufacturerFabrication foundry (e.g. TSMC) | Intel |
Specifications Reference
Raw spec sheet for quick lookup. The analysis cards above explain what these fields mean in practice.
4 categories
General Information
7 specs
General Information
7 specs
| Type | desktop |
| Designer | Intel |
| Launch Price | $539 |
| Manufacturer | Intel |
| Release Date | Maio 2021 (4 years ago) |
| Architecture Codename | Tiger Lake-H (2021) |
| Performance Ranking Position | 656 |
Technical Specifications
15 specs
Technical Specifications
15 specs
| Cores | 8 |
| Threads | 16 |
| Die Size | 190 mm2 |
| L1 Cache | 80 kB (per core) |
| L2 Cache | 1.25 MB (per core) |
| L3 Cache | 24 MB (total) |
| Bus Speed | 8 GT/s |
| Max Frequency | 4.9 GHz |
| 64-Bit Support | + |
| Base Frequency | 3.3 GHz |
| Process Technology | 10 nm SuperFin |
| Unlocked Multiplier | + |
| Max Core Temperature | 100 °C |
| Windows 11 Compatible | - |
| Max Case Temperature (TCase) | 72 °C |
Compatibility
4 specs
Compatibility
4 specs
| Socket | FCBGA1787 |
| PCIe Generation | PCIe 3.0 |
| Power Consumption (TDP) | 65 Watt |
| Max Processors In Config | 1 |
Memory
4 specs
Memory
4 specs
| RAM Types | DDR4 |
| Memory Channels | 2 |
| Memory Bandwidth | 51.2 GB/s |
| Max Memory Capacity | 128 GB |
Similar Performance
Processors with benchmark scores closest to the current hardware, grouped by manufacturer.
Intel (12)
AMD (12)
Our Recommendation for Core i9-11900KB
Suggested pairings based on performance balance
Minimum (Avoid Bottleneck) (12)
Recommended (Balanced) (12)
High-End (Max Performance) (12)
Popular Comparisons
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