Core i3-2125

Details and Benchmarks for Intel Core i3-2125

Sysbuilds Alpha Stage!

Please take all results with a big grain of salt. Sysbuilds is in alpha stage at the moment which can lead to wrong data, strange counting errors, silly results and more. This site is under active development.

Benchmark Results

Combined benchmark scores based on multiple data points, giving a quick overview of this processor's performance.

Overall Score

Overall score for Core i3-2125 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,645 Rank: 1155
Rank Name Score Visual
1151 Core i7-4500U 4,647
+0%
1152 Core i7-2655LE 4,646
+0%
1153 Core i3-4150T 4,646
+0%
1154 Core M 5Y31 4,645
+0%
1155 Core i3-2125 4,645
1156 Core i7-2720QM 4,643
+-0%
1157 Core i5-7300U 4,642
-0.1%
1158 Xeon E5-2450 v2 4,639
-0.1%
1159 Pentium G3260 4,638
-0.2%
1160 Core i5-3340M 4,638
-0.2%

View full ranking →

Multicore Score

Multicore performance score for Core i3-2125 based on multi-threaded benchmark results.

4,484 Rank: 1262
Rank Name Score Visual
1258 A12-9730P 4,485
+0%
1259 Core i3-4150T 4,485
+0%
1260 Athlon X4 950 4,485
+0%
1261 Pentium G4560T 4,484
+0%
1262 Core i3-2125 4,484
1263 Core i5-4200H 4,482
+-0%
1264 Pentium G3440 4,482
+-0%
1265 A10-9630P 4,482
+-0%
1266 Core i5-7Y54 4,480
-0.1%
1267 A8-9600 4,480
-0.1%

View full ranking →

Singlecore Score

Single-core performance score for Core i3-2125 based on single-threaded benchmark results.

4,752 Rank: 1115
Rank Name Score Visual
1111 Core i7-3632QM 4,753
+0%
1112 Celeron G1850 4,753
+0%
1113 Core i3-4150T 4,753
+0%
1114 Core i5-3330 4,752
+0%
1115 Core i3-2125 4,752
1116 Core i5-3340M 4,752
+0%
1117 Core i7 870 4,749
-0.1%
1118 Xeon E5-2470 v2 4,748
-0.1%
1119 Core i7-2920XM 4,746
-0.1%
1120 Core i3-6157U 4,743
-0.2%

View full ranking →

Workload Scores

Performance scores grouped by workload type, normalized and aggregated from multiple raw benchmark results.

Number Crunching

Aggregated score for Core i3-2125 based on integer math, floating point math, and prime number computation benchmarks.

4,536 Rank: 1253
Rank Name Score Visual
1249 Core i3-3240T 4,537
+0%
1250 Phenom II X4 B95 4,537
+0%
1251 Core i5-7Y57 4,536
+0%
1252 Celeron G4920 4,536
+0%
1253 Core i3-2125 4,536
1254 Pentium G3240 4,536
+0%
1255 Core i5-3230M 4,536
+0%
1256 Core i7-4500U 4,536
+0%
1257 Phenom II X4 945 4,536
+0%
1258 Celeron G3950 4,535
+-0%

View full ranking →

Data Processing

Aggregated score for Core i3-2125 based on data encryption, data compression, and string sorting benchmarks.

4,520 Rank: 1211
Rank Name Score Visual
1207 Phenom II X4 910e 4,521
+0%
1208 Core i5-670 4,521
+0%
1209 A8-3820 4,521
+0%
1210 Core i3-2130 4,520
+0%
1211 Core i3-2125 4,520
1212 Core i5-4210M 4,520
+0%
1213 Core i3-4150T 4,520
+0%
1214 Core i5-6260U 4,519
+-0%
1215 Core i5-5257U 4,519
+-0%
1216 Core i5-3340M 4,519
+-0%

View full ranking →

Physics & Compute

Aggregated score for Core i3-2125 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,549 Rank: 1110
Rank Name Score Visual
1106 Athlon X4 880K 4,550
+0%
1107 Core i5-4210M 4,550
+0%
1108 Core i3-7100U 4,550
+0%
1109 Xeon L5638 4,550
+0%
1110 Core i3-2125 4,549
1111 Xeon L5520 4,549
+0%
1112 Pentium J6426 4,549
+0%
1113 Pentium Gold G5420T 4,548
+-0%
1114 Core i5-3470T 4,548
+-0%
1115 Core i3-3225 4,548
+-0%

View full ranking →

Core i3-2125 Details

The Intel Core i3-2125, launched in September 2011, represents a step forward from its predecessors in the Sandy Bridge era by integrating enhanced multimedia capabilities and improved power efficiency. While it may seem outdated by today's standards, it was a notable update at the time for desktop users seeking a balance between performance and cost. The processor is built on Intel’s 32 nm process and features a dual-core design with hyper-threading, enabling it to handle four threads simultaneously. Operating at a base frequency of 3.3 GHz and boosting up to 3.6 GHz, the i3-2125 benefits from Intel's Hyper-Threading technology, which helps improve multitasking and application responsiveness. With a 65 W TDP and a 131 mm² die area, the chip maintains relatively low thermal output, making it suitable for compact builds and energy-conscious systems.

The Core i3-2125 is equipped with 3 MB of L3 cache, 61 KiB of L1 cache, and 244 KiB of L2 cache, providing sufficient bandwidth for everyday computing tasks. It supports dual-channel DDR3 memory up to 1333 MT/s, delivering a maximum memory bandwidth of 21.3 GB/s. Connectivity is handled via a PCI Express 2.0 interface with up to 16 lanes, and the processor uses the FCLGA1155 socket, ensuring compatibility with a wide range of Z77, H77, and B75 chipsets. The processor also includes Intel’s integrated HD 3000 graphics, capable of running at a burst frequency of 1.1 GHz, supporting up to two displays and offering basic multimedia and light gaming performance.

In terms of features, the Core i3-2125 supports a range of instruction sets including SSE4.1, SSE4.2, AVX2, AES-NI, and Intel VT-x for virtualization, making it suitable for software development, virtual machines, and content creation. The processor supports ECC memory, although it is limited to server-grade configurations, and includes Intel’s EIST technology for dynamic frequency scaling. Despite being a budget-oriented chip, the i3-2125 delivers solid performance for office productivity, media playback, and light gaming.

Benchmark results place the Core i3-2125 at an overall score of 4645, ranking #1154 out of 2060 processors, with a single-core score of 4752 (#1114) and a multicore score of 4484 (#1261). While it trails behind modern high-performance CPUs like the Ryzen 9 9950X3D or Core Ultra 9 285K, it holds its own against many older and mid-tier processors. Its single-core performance is particularly strong, outperforming several mid-range CPUs from the early 2010s, while its multicore performance is slightly weaker due to the limited core count. In comparison, it is faster than the Pentium G3440 and slower than the Core i7-2655LE, indicating its position as a mainstream performer from its generation.

As of March 2026, the Core i3-2125 remains a viable option for legacy systems, budget builds, or light-duty workstations where integrated graphics and power efficiency are priorities. Its support for modern instruction sets and virtualization features ensures it can still run contemporary software, albeit at reduced performance levels. For users upgrading older systems or building low-cost PCs, the i3-2125 offers a reliable, energy-efficient foundation with room for memory and storage expansion, making it a practical choice for basic computing needs.
Frequently Compared

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Intel Core i3-2125

Main Specifications

Designer: Intel
Name: Core i3-2125
Model Number: i3-2125
Cores: 2
Threads: 4
Base Frequency: 3300 MHz
Clock Multiplier: 33x (locked)
Core Name: Sandy Bridge
Socket: FCLGA1155
Package: FC-LGA10
Target Segment: Desktop
Max CPUs: 1
TDP: 65 W

Cache Specifications

L1 Cache: 62.464 KiB
L2 Cache: 0.244 MiB
L3 Cache: 2.861 MiB

Memory Specifications

Supported Memory Type: DDR3 1066/1333
Memory Channels: 2
Maximum Memory: 0 GB
Maximum Bandwidth: 21 GB/s
ECC Support: Yes

PCI-Express Specifications

PCIe Revision: 2.0
PCIe Lanes: 16
PCIe Configuration: x4, x8, x16

Integrated Graphics

GPU: HD Graphics 3000
GPU Designer: Intel
GPU Max Frequency: 1100 MHz

Physical Specifications

Process: 32 nm
Die Area: 131 mm²
Transistor Count: 0.00 billion
Manufacturer: Intel
Word Size: 64-bit

CPU Features

MMX SSE SSE2 SSE3 SSE4.1 SSE4.2 AVX2 AES x86-64 HT EIST TXT vPro VT-x VT-d EPT Secure Key SMEP SIPP IPT TSX SMT Flex Memory FMA
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