Phenom II X4 B40

Details and Benchmarks for AMD Phenom II X4 B40

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Benchmark Results

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

Overall Score

Overall score for Phenom II X4 B40 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,408 Rank: 1389
Rank Name Score Visual
1385 Core i7-3689Y 4,411
+0.1%
1386 Core i7-2670QM 4,410
+0%
1387 Core i5-661 4,409
+0%
1388 Pentium Silver N6000 4,409
+0%
1389 Phenom II X4 B40 4,408
1390 Core i5-2540M 4,406
+-0%
1391 Core M 5Y70 4,405
-0.1%
1392 Core i3-5015U 4,405
-0.1%
1393 Core i5-760 4,405
-0.1%
1394 Phenom II X4 B60 4,404
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Phenom II X4 B40 based on multi-threaded benchmark results.

4,475 Rank: 1277
Rank Name Score Visual
1273 Pentium J6426 4,477
+0%
1274 Xeon D-1602 4,476
+0%
1275 Pentium 4405U 4,476
+0%
1276 A10-6800K 4,475
+0%
1277 Phenom II X4 B40 4,475
1278 Core M 5Y10c 4,474
+-0%
1279 Core i7-5600U 4,473
+-0%
1280 Phenom II X6 1055T 4,473
+-0%
1281 A8-7600 4,471
-0.1%
1282 Athlon Silver 7120U 4,471
-0.1%

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Singlecore Score

Single-core performance score for Phenom II X4 B40 based on single-threaded benchmark results.

4,364 Rank: 1425
Rank Name Score Visual
1421 Phenom 9650 4,369
+0.1%
1422 Xeon E5450 4,367
+0.1%
1423 A9-9400 4,366
+0%
1424 Core i7-640M 4,365
+0%
1425 Phenom II X4 B40 4,364
1426 Xeon L5640 4,362
+-0%
1427 Core i5-2557M 4,361
-0.1%
1428 Athlon II X4 555 4,361
-0.1%
1429 PRO A10-8750B 4,361
-0.1%
1430 Phenom II X4 B55 4,360
-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 Phenom II X4 B40 based on integer math, floating point math, and prime number computation benchmarks.

4,525 Rank: 1341
Rank Name Score Visual
1337 Phenom II X4 905e 4,526
+0%
1338 A8-4500M 4,526
+0%
1339 Core i5-2540M 4,525
+0%
1340 Celeron G3930T 4,525
+0%
1341 Phenom II X4 B40 4,525
1342 Celeron G1840 4,525
+0%
1343 Pentium G2020 4,525
+0%
1344 Core i3-7020U 4,525
+0%
1345 Phenom II X4 830 4,525
+0%
1346 Core i5-3427U 4,525
+0%

View full ranking →

Data Processing

Aggregated score for Phenom II X4 B40 based on data encryption, data compression, and string sorting benchmarks.

4,540 Rank: 1104
Rank Name Score Visual
1100 Core i3-6100T 4,540
+0%
1101 Core i3-4150 4,540
+0%
1102 Core i5-2400S 4,540
+0%
1103 FX-9830P 4,540
+0%
1104 Phenom II X4 B40 4,540
1105 Pentium Silver J5005 4,539
+-0%
1106 Pentium Gold G5500T 4,539
+-0%
1107 Core i7-6660U 4,539
+-0%
1108 Core i5-7300U 4,539
+-0%
1109 A10-6700 4,539
+-0%

View full ranking →

Physics & Compute

Aggregated score for Phenom II X4 B40 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,505 Rank: 1374
Rank Name Score Visual
1370 Core i5-2557M 4,505
+0%
1371 Core i3-2348M 4,505
+0%
1372 Core i3-2330M 4,505
+0%
1373 Core i3-2310M 4,505
+0%
1374 Phenom II X4 B40 4,505
1375 Phenom II X4 830 4,505
+0%
1376 A10-4600M 4,505
+0%
1377 Core i5-650 4,505
+0%
1378 Athlon II X4 645 4,504
+-0%
1379 Pentium G2030 4,504
+-0%

View full ranking →

Phenom II X4 B40 Details

The Phenom II X4 B40 stands as a notable entry in AMD's lineup of older mainstream processors, designed for budget-conscious desktop users seeking a capable quad-core solution without the need for high-end performance. Released in the late 2000s, this processor is now over 15 years old, placing it firmly in the category of legacy hardware. Despite its age, the Phenom II X4 B40 remains relevant in niche applications such as retro computing, embedded systems, or as a low-cost upgrade for aging systems.

At its core, the Phenom II X4 B40 features four cores and four threads, operating at a base frequency of 3.1 GHz with a turbo frequency of 2.7 GHz. Built on a 32 nm process node and based on AMD's K10 microarchitecture, it supports DDR3 memory up to 1333 MHz, with a maximum memory capacity of 32 GB. The processor uses the FCLGA1155 socket, which was widely adopted in its era, allowing compatibility with a range of older motherboards. It supports dual-channel memory and delivers a maximum memory bandwidth of 21 GB/s, making it suitable for basic multitasking and light productivity workloads.

The integrated graphics solution is provided by Intel's HD Graphics, which is an unusual pairing given AMD's role as the processor designer. This integrated GPU runs at a base frequency of 850 MHz and can boost up to 1100 MHz, supporting up to two displays. While not powerful enough for modern gaming or video editing, it offers sufficient performance for basic multimedia playback and light graphical tasks.

In terms of supported features, the Phenom II X4 B40 includes a broad array of technologies such as SSE4.1, SSE4.2, AVX2, AES-NI, and x86-64, ensuring compatibility with a wide range of software. It also supports advanced virtualization features like VT-x and VT-d, along with Intel's vPro technology, which enhances manageability and security in enterprise environments. The processor includes EIST for power efficiency and supports ECC memory, a feature often found in server-grade hardware, indicating its versatility in both consumer and business settings.

Benchmark data reveals that the Phenom II X4 B40 achieves an overall score of 4408, placing it at #1389 among 2060 processors. Its single-core score of 4364 ranks it at #1425, while its multicore score of 4475 places it at #1276. These results show that while the processor performs adequately for its time, it is significantly outpaced by modern CPUs. In the top 50 lists, it falls far behind current high-end models like the Ryzen Threadripper PRO 9995WX and Core Ultra 9 285K, which dominate in both single-core and multicore performance.

As of March 2026, the Phenom II X4 B40 is best suited for legacy systems, retro gaming, or as a cost-effective solution for users who do not require high-performance computing. Its combination of integrated graphics, ECC support, and virtualization features makes it a practical choice for older workstations or embedded applications, even as it remains a relic in the broader landscape of modern computing.
Frequently Compared

Intel Core i9-7960X 35 views

AMD Ryzen Threadripper 1900X 31 views

AMD Ryzen Threadripper 1920X 31 views

AMD Ryzen 3 PRO 2200GE 30 views

AMD Ryzen 9 PRO 3900 30 views

AMD Ryzen Threadripper 2990WX 30 views

Intel Xeon Silver 4108 28 views

Intel Xeon Silver 4112 27 views

AMD Ryzen 5 3500X 26 views

AMD Ryzen 5 PRO 3500U 26 views

AMD Phenom II X4 B40

Main Specifications

Designer: AMD
Name: Phenom II X4 B40
Model Number: G870
Cores: 2
Threads: 2
Base Frequency: 3100 MHz
Socket: FCLGA1155
Max CPUs: 1
TDP: 65 W

Cache Specifications

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: up to 1x16, 2x8, 1x8 & 2x4

Integrated Graphics

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

Physical Specifications

Process: 32 nm
Word Size: 64-bit

CPU Features

SSE4.1 SSE4.2 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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