Pentium G840

Details and Benchmarks for Intel Pentium G840

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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 Pentium G840 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,387 Rank: 1418
Rank Name Score Visual
1414 Core i3-5010U 4,390
+0.1%
1415 Xeon Bronze 3106 4,389
+0%
1416 Intel Core i5-560M 4,389
+0%
1417 Pentium N6415 4,388
+0%
1418 Pentium G840 4,387
1419 Phenom II X2 560 4,387
+0%
1420 Celeron G530 4,385
+-0%
1421 A9-9420 4,385
+-0%
1422 Core i7-8500Y 4,385
+-0%
1423 Phenom II X4 965 4,384
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Pentium G840 based on multi-threaded benchmark results.

4,344 Rank: 1599
Rank Name Score Visual
1595 Pentium 997 4,345
+0%
1596 Athlon II X2 260 4,345
+0%
1597 A8-3500M 4,345
+0%
1598 Celeron N3450 4,344
+0%
1599 Pentium G840 4,344
1600 Pentium E6800 4,344
+0%
1601 Celeron G1820TE 4,344
+0%
1602 Core i3-2100T 4,344
+0%
1603 Core i7-8500Y 4,344
+0%
1604 Atom C3338 4,343
+-0%

View full ranking →

Singlecore Score

Single-core performance score for Pentium G840 based on single-threaded benchmark results.

4,415 Rank: 1377
Rank Name Score Visual
1373 Core i5-2540M 4,419
+0.1%
1374 Core i5-2435M 4,419
+0.1%
1375 PRO A8-8650B 4,419
+0.1%
1376 Core i5-661 4,418
+0.1%
1377 Pentium G840 4,415
1378 FX-6200 4,413
+-0%
1379 A10-7700K 4,413
+-0%
1380 Core i7-8500Y 4,413
+-0%
1381 Phenom II X4 965 4,412
-0.1%
1382 A8-7600 4,412
-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 Pentium G840 based on integer math, floating point math, and prime number computation benchmarks.

4,508 Rank: 1473
Rank Name Score Visual
1469 A6-5400B 4,509
+0%
1470 A6-3600 4,509
+0%
1471 Atom x7-E3950 4,509
+0%
1472 Core i3-2370M 4,508
+0%
1473 Pentium G840 4,508
1474 A4-6300 4,508
+0%
1475 A6-5200 4,508
+0%
1476 Xeon E5320 4,508
+0%
1477 A8-4555M 4,508
+0%
1478 Core i5-460M 4,508
+0%

View full ranking →

Data Processing

Aggregated score for Pentium G840 based on data encryption, data compression, and string sorting benchmarks.

4,473 Rank: 1499
Rank Name Score Visual
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
1500 Celeron G1610 4,473
+0%
1501 A9-9430 4,473
+0%
1502 A6-9500E 4,473
+0%
1503 Athlon II X2 260 4,473
+0%
1504 A8-5545M 4,473
+0%

View full ranking →

Physics & Compute

Aggregated score for Pentium G840 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,499 Rank: 1409
Rank Name Score Visual
1405 Athlon II X4 630 4,500
+0%
1406 A6-3620 4,500
+0%
1407 Celeron 3965U 4,499
+0%
1408 Pentium G860 4,499
+0%
1409 Pentium G840 4,499
1410 Xeon E5504 4,499
+0%
1411 Core i3-3217U 4,499
+0%
1412 Celeron G1840T 4,499
+0%
1413 Celeron G1820T 4,499
+0%
1414 Core i3-540 4,499
+0%

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Pentium G840 Details

The Intel Pentium G840, launched in May 2011, is a desktop processor rooted in the Sandy Bridge architecture and built on a 32 nm process. Despite being over a decade old, it remains a relevant entry in the low-end market segment for basic computing tasks. With a 2.8 GHz base clock and a turbo frequency of 3.0 GHz, the G840 features two cores and two threads, operating under a 65 W TDP and using the FCLGA1155 socket. It supports DDR3 memory at up to 1333 MHz in dual-channel mode, with a maximum memory capacity of 32 GB and a memory bandwidth of 21 GB/s.

The processor integrates Intel HD Graphics, which runs at a base frequency of 850 MHz and can boost up to 1.1 GHz, supporting up to two displays. It includes a 3 MB L3 cache, 0.061 MiB of L1 cache, and 0.244 MiB of L2 cache, contributing to its modest but functional performance. The G840 supports modern instruction sets such as AVX, AVX2, AES-NI, and Intel’s virtualization technologies, including VT-x and VT-d, making it suitable for light virtualization and encryption workloads.

In benchmark testing, the Pentium G840 achieves a multicore score of 4344, placing it at #1598 out of 2060 processors, with a single-core score of 4415, ranking #1377. Its overall score of 4387 ranks it #1418 in the broader comparison. While it trails behind modern high-performance CPUs, it holds its own against older dual-core processors like the Celeron G550 and Phenom II P940. In the top 50 lists, it is notably outpaced by contemporary flagship CPUs such as the Ryzen Threadripper PRO 9995WX and Core Ultra 9 285K, which score over 9,000 in multicore performance.

Given its age and limited core count, the G840 is best suited for basic office applications, web browsing, and light multimedia use. It offers a cost-effective upgrade path for older systems that do not require high computational throughput. As of March 2026, it remains a niche option for users prioritizing power efficiency and affordability over raw performance.
Frequently Compared

Intel Core i3-8145U 25 views

AMD Ryzen 5 3500X 24 views

Intel Core i7-7700K 24 views

Intel Xeon Silver 4208 23 views

AMD Ryzen 3 PRO 2200GE 21 views

AMD Ryzen Threadripper 1950X 21 views

Intel Xeon Silver 4110 21 views

Intel Xeon Silver 4112 21 views

AMD Ryzen 5 PRO 3500U 20 views

AMD Ryzen 9 PRO 3900 17 views

Intel Pentium G840

Main Specifications

Designer: Intel
Name: Pentium G840
Model Number: G840
Cores: 2
Threads: 2
Base Frequency: 2800 MHz
Clock Multiplier: 28x (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: 40
PCIe Configuration: x4, x8, x16

Integrated Graphics

GPU: HD Graphics
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 SSSE3 SSE4.1 SSE4.2 AVX AVX2 AES x86-64 HT EIST TXT vPro VT-x VT-d EPT Secure Key SMEP SIPP IPT TSX Flex Memory FMA
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