Pentium G640

Details and Benchmarks for Intel Pentium G640

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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 G640 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,378 Rank: 1434
Rank Name Score Visual
1430 PRO A10-8750B 4,381
+0.1%
1431 Celeron G1840T 4,379
+0%
1432 A8-7500 4,378
+0%
1433 Phenom II X4 850 4,378
+0%
1434 Pentium G640 4,378
1435 Core i5-3337U 4,378
+0%
1436 Xeon E5620 4,377
+-0%
1437 Phenom II X4 960T 4,377
+-0%
1438 Core i5-2557M 4,376
+-0%
1439 Pentium Silver J5040 4,375
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Pentium G640 based on multi-threaded benchmark results.

4,311 Rank: 1723
Rank Name Score Visual
1719 Core i5-8200Y 4,313
+0%
1720 Athlon 5150 4,313
+0%
1721 Celeron 3965Y 4,312
+0%
1722 Pentium P6200 4,312
+0%
1723 Pentium G640 4,311
1724 Celeron G540 4,311
+0%
1725 Celeron 1005M 4,311
+0%
1726 A6-9210 4,311
+0%
1727 E2-9000 4,311
+0%
1728 Core i3-350M 4,311
+0%

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Singlecore Score

Single-core performance score for Pentium G640 based on single-threaded benchmark results.

4,422 Rank: 1369
Rank Name Score Visual
1365 A10 PRO-7800B 4,427
+0.1%
1366 Core i7-3540M 4,426
+0.1%
1367 Celeron G1820T 4,424
+0%
1368 Core i5-660 4,423
+0%
1369 Pentium G640 4,422
1370 Core i3-3110M 4,422
+0%
1371 Pentium G630 4,421
+-0%
1372 FX-8800P 4,420
+-0%
1373 Core i5-2540M 4,419
-0.1%
1374 Core i5-2435M 4,419
-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 G640 based on integer math, floating point math, and prime number computation benchmarks.

4,507 Rank: 1479
Rank Name Score Visual
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%
1479 Pentium G640 4,507
1480 Athlon II X3 450 4,507
+0%
1481 Core M-5Y10 4,507
+0%
1482 A8-3510MX 4,507
+0%
1483 Celeron G1610T 4,507
+0%
1484 Core i3-2348M 4,506
+-0%

View full ranking →

Data Processing

Aggregated score for Pentium G640 based on data encryption, data compression, and string sorting benchmarks.

4,472 Rank: 1514
Rank Name Score Visual
1510 Celeron G1840T 4,473
+0%
1511 Pentium 3825U 4,473
+0%
1512 Core i3-2328M 4,472
+0%
1513 Core i3-2310M 4,472
+0%
1514 Pentium G640 4,472
1515 A6-6400K 4,472
+0%
1516 A4-6320 4,472
+0%
1517 Pentium E6800 4,472
+0%
1518 A8-7100 4,472
+0%
1519 A6-3400M 4,472
+0%

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Physics & Compute

Aggregated score for Pentium G640 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,491 Rank: 1464
Rank Name Score Visual
1460 A6-7470K 4,492
+0%
1461 Xeon E5345 4,492
+0%
1462 Core i5-580M 4,492
+0%
1463 Phenom II X3 705e 4,492
+0%
1464 Pentium G640 4,491
1465 Pentium N4200 4,491
+0%
1466 A10-5745M 4,491
+0%
1467 Core i5-560M 4,491
+0%
1468 Core i7-2610UE 4,490
+-0%
1469 Athlon II X3 455 4,490
+-0%

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Pentium G640 Details

The Intel Pentium G640, released in June 2012, represents a step down from its more powerful Core i-series siblings but remains a notable entry in Intel's Sandy Bridge family. Built on a 32 nm process and featuring the Sandy Bridge microarchitecture, it was designed for mainstream desktop users seeking a balance between cost and performance. As of early 2026, the G640 is well over a decade old, placing it firmly in the category of legacy hardware, yet it still holds relevance in low-power or budget-oriented systems. Its 2.8 GHz base clock, paired with a 65 W TDP, reflects a design focused on efficiency, though it lacks modern features like multi-threading and high-speed memory support.

The processor features two cores and two threads, with no support for simultaneous multithreading, which limits its ability to handle modern multitasking and parallel workloads. It operates on a 5 GT/s bus and supports DDR3 1066 memory in a dual-channel configuration, allowing up to 32 GB of RAM. The integrated Intel HD Graphics (Sandy Bridge) provides basic visual performance, with a base frequency of 850 MHz and a burst frequency of 1100 MHz, capable of driving up to two displays. While not suitable for gaming or intensive graphical tasks, this GPU is adequate for office applications and media playback.

In terms of specifications, the G640 includes 3 MB of L3 cache, 0.061 MiB of L1 cache, and 0.244 MiB of L2 cache. It supports a range of instruction sets, including SSE4.1, SSE4.2, AVX, and AES-NI, enabling some acceleration in multimedia and encryption workloads. It also supports virtualization technologies such as VT-x and EPT, which improve virtual machine performance. However, the locked multiplier limits overclocking potential, and the absence of ECC memory support restricts its use in server or workstation environments.

Benchmark results place the G640 in the mid-tier of its era. It scores 4378 in the overall Passmark benchmark, ranking #1432 out of 2060 processors, with single-core and multicore scores of 4422 and 4311, respectively. These results indicate that while it performs better than many older Atom and Celeron variants, it falls well behind modern CPUs, even in the low-end segment. In comparison to its direct predecessor, the Pentium G630, the G640 offers a modest improvement in clock speed, but not enough to significantly close the performance gap with contemporary offerings.

Despite its age, the Pentium G640 remains a viable option for basic computing tasks such as web browsing, document editing, and light multimedia use. It is best suited for legacy systems or as a replacement in budget builds where high performance is not required. However, for users seeking modern performance or compatibility with current software and operating systems, the G640 is no longer competitive. As of February 2026, it serves as a reminder of a bygone era in CPU design, where integrated graphics and efficiency were prioritized over raw power.
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Intel Pentium G640

Main Specifications

Designer: Intel
Name: Pentium G640
Model Number: G640
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
Memory Channels: 2
Maximum Memory: 0 GB
Maximum Bandwidth: 17 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 2.0
PCIe Lanes: 12
PCIe Configuration: 4x1, 2x4

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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