INTEL

Intel Core i3-8121U

Intel processor specifications and benchmark scores

2
Cores
4
Threads
3.2
GHz Boost
15W
TDP

Intel Core i3-8121U Specifications

⚙️

Core i3-8121U Core Configuration

Processing cores and threading

The Intel Core i3-8121U features 2 physical cores and 4 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
2
Threads
4
SMP CPUs
1
⏱️

i3-8121U Clock Speeds

Base and boost frequencies

Clock speed is a critical factor in Core i3-8121U 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 i3-8121U by Intel can dynamically adjust its frequency based on workload and thermal headroom.

Base Clock
2.2 GHz
Boost Clock
3.2 GHz
Multiplier
22x
💾

Intel's Core i3-8121U Cache Hierarchy

L1, L2, L3 cache sizes

Cache memory is ultra-fast storage built directly into the i3-8121U 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 i3-8121U's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.

L1 Cache
64 KB (per core)
L2 Cache
256 KB (per core)
L3 Cache
4 MB (shared)
🏗️

Cannon Lake Architecture & Process

Manufacturing and design details

The Intel Core i3-8121U 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 i3-8121U incorporate advanced branch prediction and out-of-order execution for optimal performance.

Architecture
Cannon Lake
Codename
Cannon Lake
Process Node
10 nm
Foundry
Intel
Die Size
70.52 mm²
Generation
Core i3 (Kaby Lake-U Refresh)
🔢

Cannon Lake Instruction Set Features

Supported CPU instructions and extensions

The Core i3-8121U 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
🔌

i3-8121U Power & Thermal

TDP and power specifications

The Intel Core i3-8121U has a TDP (Thermal Design Power) of 15W, 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
15W
Tj Max
105°C
🔧

Intel BGA 1440 Platform & Socket

Compatibility information

The Core i3-8121U uses the Intel BGA 1440 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 1440
PCIe
Gen 3, 16 Lanes(CPU only)
Package
FC-BGA1440
DDR5

Intel BGA 1440 Memory Support

RAM compatibility and speeds

Memory support specifications for the i3-8121U 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 i3-8121U 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
38.4 GB/s
📦

Core i3-8121U Product Information

Release and pricing details

The Intel Core i3-8121U 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 i3-8121U by Intel offers a specific balance of performance, features, and cost within Intel's product lineup.

Manufacturer
Intel
Release Date
May 2018
Market
Mobile
Status
End-of-life
Part Number
SRCVC

Core i3-8121U 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 i3-8121U performs in parallel rendering workloads like video production and 3D animation. The R15 version remains useful for comparing against older hardware benchmarks. Higher scores directly correlate with faster render times in Cinema 4D and similar 3D applications.

cinebench_cinebench_r15_multicore #1224 of 1788
376
3%
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 i3-8121U handles tasks that can't be parallelized across multiple cores. Games and many desktop applications still rely heavily on single-thread performance. A higher single-core score means snappier system responsiveness in everyday use.

cinebench_cinebench_r15_singlecore #1235 of 1245
52
2%
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 i3-8121U. The more demanding workload provides better differentiation between current-generation processors.

cinebench_cinebench_r20_multicore #1225 of 1788
1,567
3%
Max: 62,412
Compare with other CPUs

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 i3-8121U. The increased complexity provides more accurate performance differentiation between modern CPUs.

cinebench_cinebench_r20_singlecore #1225 of 1784
220
2%
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 i3-8121U after thermal limits kick in. The longer duration exposes cooling limitations that shorter benchmarks miss.

cinebench_cinebench_r23_multicore #1225 of 1788
3,732
3%
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 i3-8121U maintains boost clocks under continuous load. The extended runtime shows whether thermal throttling affects single-core performance.

cinebench_cinebench_r23_singlecore #1226 of 1788
526
3%
Max: 20,979

geekbench_multicoreSource

Geekbench multi-core tests Intel Core i3-8121U across real-world workloads including image processing, machine learning, and data compression. All available threads are utilized to measure parallel performance. Higher scores indicate better capability in multitasking and content creation.

geekbench_multicore #472 of 711
2,364
10%
Max: 22,515
Compare with other CPUs

geekbench_singlecoreSource

Geekbench single-core measures how fast one thread of Intel Core i3-8121U can process tasks like web browsing and document editing. This score correlates with how snappy the system feels during normal use. Many applications still depend primarily on single-thread performance.

geekbench_singlecore #405 of 711
1,176
35%
Max: 3,401
Compare with other CPUs

About Intel Core i3-8121U

The I3-8121U by Intel is a 2-core, 4-thread processor launched in 2018 under the Kaby Lake-U Refresh architecture. With a base clock of 2.20 GHz and a turbo boost of 3.20 GHz, it balances efficiency and responsiveness for lightweight gaming and productivity. While not a powerhouse, it handles older titles and indie games decently when paired with a capable GPU, though modern titles may require lower settings. The 4 MB shared L3 cache aids multitasking, making it suitable for content creation or streaming if paired with 16 GB of RAM. Its 15W TDP ensures it remains thermally efficient, ideal for compact laptops. For gamers prioritizing portability over raw power, this chip offers a reasonable starting point.
  1. Decent performance for 1080p gaming with mid-tier GPUs.
  2. Efficient multitasking with 4 MB cache and hyper-threading.
  3. Lower thermal output suits slim laptop designs.
Productivity benchmarks for the Intel Core i3-8121U reveal mixed results. It scores 3,732 points in Cinebench R23 multicore and 2,364 in Geekbench multicore, adequate for basic video editing or 3D rendering but lagging behind modern quad-core chips. Single-core performance hits 526 points in Cinebench R23 and 1,176 in Geekbench, which handles single-threaded tasks decently but struggles with heavy multithreaded workloads. For light productivity like spreadsheet work or web browsing, it suffices, but content creators or developers will find it restrictive. The 10 nm process and 4 MB cache help maintain reasonable efficiency, though power users will notice bottlenecks. This chip shines in budget systems where cost outweighs peak performance.
  1. 3,732 Cinebench R23 multicore for light content creation.
  2. 1,176 Geekbench single-core for basic productivity.
  3. Struggles with modern multithreaded applications.
The 2-core Intel Core i3-8121U offers a budget-friendly value proposition for entry-level systems. Released in May 2018, it targets laptops with BGA 1440 sockets, making it ideal for compact or ultraportable designs. To maximize performance, pair it with a dedicated GPU like the GTX 1650 and at least 16 GB DDR4 RAM. Cooling solutions must manage the 15W TDP effectively to prevent throttling during extended use. While not future-proof, it remains a cost-effective option for casual gamers or students who need portability over raw power. Upgrades to a faster SSD or higher RAM capacity can significantly enhance system responsiveness. Gamers should consider this chip for secondary machines or as a stepping stone to more capable hardware.
  1. Requires BGA 1440 socket and compatible cooling.
  2. Pair with GTX 1650+ GPU for decent gaming.
  3. Budget-friendly entry for casual or secondary setups.

The AMD Equivalent of Core i3-8121U

Looking for a similar processor from AMD? The AMD Ryzen 3 PRO 2200G offers comparable performance and features in the AMD lineup.

AMD Ryzen 3 PRO 2200G

AMD • 4 Cores

View Specs Compare

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