Celeron 3965U

Details and Benchmarks for Intel Celeron 3965U

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 Celeron 3965U based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,444 Rank: 1339
Rank Name Score Visual
1335 Core i5-4250U 4,449
+0.1%
1336 A8-7650K 4,447
+0.1%
1337 Phenom II X2 565 4,446
+0%
1338 Core i3-2370M 4,444
+0%
1339 Celeron 3965U 4,444
1340 A10-7850K 4,443
+-0%
1341 A10-7860K 4,443
+-0%
1342 Core i5-3230M 4,442
+-0%
1343 A10-5700 4,442
+-0%
1344 Core i5-660 4,442
+-0%

View full ranking →

Multicore Score

Multicore performance score for Celeron 3965U based on multi-threaded benchmark results.

4,390 Rank: 1482
Rank Name Score Visual
1478 Phenom II X2 560 4,391
+0%
1479 Core i3-4030U 4,391
+0%
1480 A8-6500B 4,391
+0%
1481 Core i3-2310M 4,390
+0%
1482 Celeron 3965U 4,390
1483 Atom C3538 4,390
+0%
1484 Core i5-2390T 4,390
+0%
1485 Celeron G1840 4,389
+-0%
1486 Core i7-920XM 4,389
+-0%
1487 Core i5-2540M 4,387
-0.1%

View full ranking →

Singlecore Score

Single-core performance score for Celeron 3965U based on single-threaded benchmark results.

4,480 Rank: 1305
Rank Name Score Visual
1301 Phenom II X4 970 4,484
+0.1%
1302 Core i7-2640M 4,483
+0.1%
1303 Xeon W3520 4,481
+0%
1304 Xeon E5-2608L v4 4,480
+0%
1305 Celeron 3965U 4,480
1306 Phenom II X4 975 4,479
+-0%
1307 Pentium J6426 4,479
+-0%
1308 Pentium G870 4,478
+-0%
1309 Phenom 9850 4,478
+-0%
1310 Athlon II X4 641 4,477
-0.1%

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Workload Scores

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

Number Crunching

Aggregated score for Celeron 3965U based on integer math, floating point math, and prime number computation benchmarks.

4,512 Rank: 1443
Rank Name Score Visual
1439 Celeron G1840T 4,513
+0%
1440 Athlon II X4 610e 4,513
+0%
1441 A6-6310 4,513
+0%
1442 Core i5-2415M 4,512
+0%
1443 Celeron 3965U 4,512
1444 Pentium G860 4,512
+0%
1445 Athlon II X3 460 4,512
+0%
1446 A6-6400K 4,512
+0%
1447 A4-7210 4,512
+0%
1448 Phenom II X3 B73 4,512
+0%

View full ranking →

Data Processing

Aggregated score for Celeron 3965U based on data encryption, data compression, and string sorting benchmarks.

4,474 Rank: 1494
Rank Name Score Visual
1490 Phenom II X2 555 4,475
+0%
1491 A10-7300 4,475
+0%
1492 Celeron N2940 4,475
+0%
1493 Core i3-2330M 4,474
+0%
1494 Celeron 3965U 4,474
1495 A6-7400K 4,474
+0%
1496 Xeon E3110 4,474
+0%
1497 Celeron N2930 4,474
+0%
1498 Core i5-450M 4,474
+0%
1499 Pentium G840 4,473
+-0%

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Physics & Compute

Aggregated score for Celeron 3965U based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,499 Rank: 1407
Rank Name Score Visual
1403 Celeron G1820 4,500
+0%
1404 Pentium G850 4,500
+0%
1405 Athlon II X4 630 4,500
+0%
1406 A6-3620 4,500
+0%
1407 Celeron 3965U 4,499
1408 Pentium G860 4,499
+0%
1409 Pentium G840 4,499
+0%
1410 Xeon E5504 4,499
+0%
1411 Core i3-3217U 4,499
+0%
1412 Celeron G1840T 4,499
+0%

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Celeron 3965U Details

Built on Intel's Kaby Lake microarchitecture and fabricated on a 14 nm process, the Celeron 3965U is a mobile processor designed for entry-level computing. Released in 2016, it represents an older generation of Intel's low-power lineup, with a current time of 2026 indicating it has been out of production for several years. Despite its age, the processor retains relevance in niche applications where low power consumption and integrated graphics are priorities. It operates at a base clock of 2.2 GHz with a locked multiplier and is packaged in FCBGA-1356, making it suitable for thin and light laptops.

The Celeron 3965U features two cores and two threads, utilizing a 12-way set associative L3 cache of 2 MiB and 0.5 MiB of L2 cache. It supports up to 64 GiB of DDR4-2133 or DDR3L-1600 memory across two channels, delivering a maximum memory bandwidth of 31.79 GiB/s. With a TDP of 15 W—downgradable to 10 W—it offers a balance between performance and thermal efficiency. The processor supports a range of Intel technologies, including Intel Speed Shift, Enhanced SpeedStep, and Intel VT-x, while also offering AES-NI and AVX instruction sets for improved data encryption and vectorized operations.

Integrated graphics are provided by the HD Graphics 610, which includes 12 execution units capable of reaching a burst frequency of 900 MHz. This GPU supports up to three displays and is sufficient for basic multimedia tasks and light gaming. However, its performance is limited compared to modern integrated solutions, especially in demanding workloads. The processor also supports ECC memory, though this feature is typically reserved for workstation or server environments.

In benchmark testing, the Celeron 3965U achieves a single-core score of 4480, placing it at #1304 out of 2060 processors, and a multicore score of 4390, ranking #1481 of 2060. Its overall score of 4444 puts it at #1338 of 2060. While these results are modest by today’s standards, the CPU holds its own against older dual-core designs like the Core i5-2540M and competes closely with mid-range mobile processors from the same era. However, it falls short of modern single-core leaders such as the Core Ultra 9 285K, which scores over 8,700.

As of March 2026, the Celeron 3965U is best suited for users requiring a low-cost, low-power solution for basic productivity tasks, web browsing, and media playback. It is not ideal for gaming, content creation, or heavy multitasking, where more capable processors are available. Its competitive positioning is largely historical, and while it remains functional in older systems, it is no longer a viable option for new builds or performance-sensitive use cases.
Frequently Compared

AMD EPYC 7502P 7 views

AMD Ryzen 9 PRO 3900 4 views

AMD Ryzen 5 PRO 3500U 2 views

AMD Ryzen 3 PRO 2200GE 1 view

Intel Xeon Silver 4210 1 view

Intel Core i7-7500U 1 view

Intel Core i7-7700K 1 view

Intel Celeron 3965U

Main Specifications

Designer: Intel
Name: Celeron 3965U
Family: Celeron
Series: 3900
Model Number: 3965U
Cores: 2
Threads: 2
Base Frequency: 2200 MHz
Clock Multiplier: 22x (locked)
Microarchitecture: Kaby Lake
Core Name: Kaby Lake U
Core Family: 6
Core Model: 142
Package: FCBGA-1356
Target Segment: Mobile
Max CPUs: 1
TDP: 15 W
Release Price: $107.00

Cache Specifications

L1 Cache: 128 KiB
L1 Instruction Cache: 64 KiB (8-way set associative)
L1 Data Cache: 64 KiB (8-way set associative)
L2 Cache: 0.5 MiB (4-way set associative)
L3 Cache: 2 MiB (12-way set associative)

Memory Specifications

Supported Memory Type: LPDDR3-1866 DDR3L-1600 and DDR4-2133
Memory Channels: 2
Maximum Memory: 64 GB
Maximum Bandwidth: 31.79 GB/s
ECC Support: No

Integrated Graphics

GPU: HD Graphics 610
GPU Designer: Intel
GPU Max Frequency: 900 MHz
Execution Units: 12

Physical Specifications

Process: 14 nm
Manufacturer: Intel
Technology: CMOS
Word Size: 64-bit
ISA: x86-64 (x86)

CPU Features

MMX EMMX SSE SSE2 SSE3 SSSE3 SSE4.1 SSE4.2 AVX ABM BMI1 BMI2 AES RdRand ADX CLMUL F16C x86-16 x86-32 x86-64 Real Protected SMM FPU NX HT TBT 2.0 EIST SST TXT vPro VT-x VT-d EPT MPX SGX Secure Key SMEP Flex Memory MWT ISRT
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