Phenom II X3 B75

Details and Benchmarks for AMD Phenom II X3 B75

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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 X3 B75 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,270 Rank: 1562
Rank Name Score Visual
1558 Core i3-2100T 4,274
+0.1%
1559 Atom C3955 4,273
+0.1%
1560 Xeon E3110 4,272
+0%
1561 Core 2 Duo T7250 4,271
+0%
1562 Phenom II X3 B75 4,270
1563 Phenom 9650 4,269
+-0%
1564 Pentium Gold 4415Y 4,268
+-0%
1565 Xeon L5420 4,267
-0.1%
1566 Core i3-2350M 4,266
-0.1%
1567 Atom C3958 4,266
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Phenom II X3 B75 based on multi-threaded benchmark results.

4,375 Rank: 1520
Rank Name Score Visual
1516 Core i5-3210M 4,375
+0%
1517 Xeon E5472 4,375
+0%
1518 A10-9620P 4,375
+0%
1519 Celeron G1820T 4,375
+0%
1520 Phenom II X3 B75 4,375
1521 Phenom II X4 955 4,374
+-0%
1522 Celeron G530 4,374
+-0%
1523 A9-9400 4,374
+-0%
1524 Core i5-4200Y 4,374
+-0%
1525 Celeron J3455 4,373
+-0%

View full ranking →

Singlecore Score

Single-core performance score for Phenom II X3 B75 based on single-threaded benchmark results.

4,200 Rank: 1574
Rank Name Score Visual
1570 Xeon 5160 4,208
+0.2%
1571 A10-5757M 4,203
+0.1%
1572 Core 2 Duo E7400 4,201
+0%
1573 A8-3870K 4,200
+0%
1574 Phenom II X3 B75 4,200
1575 Pentium Silver N5000 4,199
+-0%
1576 Intel Core i7-640LM 4,199
+-0%
1577 Athlon II X2 B24 4,199
+-0%
1578 Pentium E5500 4,199
+-0%
1579 Celeron G540 4,196
-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 X3 B75 based on integer math, floating point math, and prime number computation benchmarks.

4,518 Rank: 1405
Rank Name Score Visual
1401 Core i3-5015U 4,518
+0%
1402 Core i3-5005U 4,518
+0%
1403 Core i3-560 4,518
+0%
1404 Core i3-530 4,518
+0%
1405 Phenom II X3 B75 4,518
1406 Celeron G3900T 4,517
+-0%
1407 Celeron J3455 4,517
+-0%
1408 Celeron G1620 4,517
+-0%
1409 A8-6410 4,517
+-0%
1410 Core i5-2430M 4,516
+-0%

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Data Processing

Aggregated score for Phenom II X3 B75 based on data encryption, data compression, and string sorting benchmarks.

4,502 Rank: 1318
Rank Name Score Visual
1314 Core i7-4650U 4,502
+0%
1315 Core i5-4300U 4,502
+0%
1316 A12-9700P 4,502
+0%
1317 Core i7-3689Y 4,502
+0%
1318 Phenom II X3 B75 4,502
1319 Pentium G4500T 4,501
+-0%
1320 Pentium G3440 4,501
+-0%
1321 Pentium G3430 4,501
+-0%
1322 Core i7-4500U 4,501
+-0%
1323 Core i5-5250U 4,501
+-0%

View full ranking →

Physics & Compute

Aggregated score for Phenom II X3 B75 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,494 Rank: 1450
Rank Name Score Visual
1446 Pentium 2030M 4,495
+0%
1447 Core i5-2537M 4,494
+0%
1448 Core i5-2467M 4,494
+0%
1449 Pentium 2020M 4,494
+0%
1450 Phenom II X3 B75 4,494
1451 Pentium 3825U 4,494
+0%
1452 Pentium G2020T 4,494
+0%
1453 Atom C3538 4,493
+-0%
1454 Athlon II X4 620 4,493
+-0%
1455 Phenom II X3 720 4,493
+-0%

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Phenom II X3 B75 Details

As of March 2026, the AMD Phenom II X3 B75 remains a relic of the late 2000s, a triple-core desktop processor launched in October 2009. Built on the Heka microarchitecture at a 45 nm process, it was designed for Socket AM3 systems and positioned as a mid-tier offering in AMD’s Phenom II lineup. With a base clock of 3.0 GHz and a locked multiplier, the B75 was intended for users seeking a balance between cost and performance, though its single-threaded capabilities are now well behind modern standards. Despite its age, it retains relevance in legacy systems and budget builds where integrated graphics or ECC memory support are priorities.

The Phenom II X3 B75 features 3 cores and 3 threads, with no simultaneous multithreading support, which limits its ability to scale in multi-threaded workloads. It includes 0.122 MiB of L1 cache, 0.488 MiB of L2 cache, and a substantial 5.722 MiB of shared L3 cache, helping to reduce memory latency. The processor operates at a TDP of 95 W, requiring adequate cooling, particularly in densely packed systems. It supports DDR3 memory at up to 1333 MT/s via a dual-channel interface, and can be paired with chipsets from the AMD 700, 800, and 900 series, as well as NVIDIA nForce variants. While it lacks integrated graphics, certain motherboards with compatible chipsets can provide this functionality through the chipset.

In terms of real-world performance, the Phenom II X3 B75 scores 4270 in the overall Passmark benchmark, placing it at #1562 out of 2060 processors. Its single-core score of 4200 ranks it at #1573, indicating that while it holds its own in older applications, it is outpaced by modern single-threaded CPUs. The multicore score of 4375 ranks it at #1516, showing it performs better in multi-threaded scenarios, though still far below current high-end processors. Among its direct peers, it is slightly faster than the Phenom II X4 955 and slower than the Athlon II X3 440, but still trails behind most contemporary CPUs.

The processor supports a range of AMD-specific technologies, including AMD-V for hardware virtualization, SSE, SSE2, SSE3, SSE4a, and 3DNow! for multimedia acceleration. It also supports ECC memory, making it suitable for entry-level server or workstation use where data integrity is critical. However, its 45 nm manufacturing process and lack of modern instruction sets like AVX2 or AES-NI limit its efficiency and performance in modern software. The 758 million transistors on a 258 mm² die reflect the design constraints of its era, with GlobalFoundries handling fabrication.

Given its age and performance profile, the Phenom II X3 B75 is best suited for retro computing, educational environments, or low-cost systems where power efficiency and modern features are not required. While it offers a glimpse into AMD’s early efforts in multi-core desktop CPUs, its performance is now dwarfed by modern offerings, even in the budget segment. For users seeking more capable processing, even older quad-core CPUs from the same era or newer low-power alternatives would provide a significant upgrade.
Frequently Compared

AMD Ryzen 7 5700 48 views

Intel Celeron G4920 42 views

AMD Phenom 9650 34 views

AMD Ryzen 5 3600 33 views

AMD Ryzen 5 3500X 32 views

Intel Xeon W3503 31 views

AMD A10-7400P 31 views

AMD Phenom II X2 555 30 views

AMD Phenom II X3 710 30 views

AMD Phenom II X2 560 28 views

AMD Phenom II X3 B75

Main Specifications

Designer: AMD
Name: Phenom II X3 B75
Cores: 3
Threads: 3
Base Frequency: 3000 MHz
Clock Multiplier: 15x (locked)
Core Name: Heka
Socket: Socket AM3
Package: µPGA
Target Segment: Desktop
TDP: 95 W

Cache Specifications

L1 Cache: 124.928 KiB
L2 Cache: 0.488 MiB
L3 Cache: 5.722 MiB

Memory Specifications

Supported Memory Type: DDR3

Physical Specifications

Process: 45 nm
Die Area: 258 mm²
Transistor Count: 0.00 billion
Manufacturer: GlobalFoundries

CPU Features

MMX SSE SSE2 SSE3 ABM SSE4a AMD-V 3DNow!
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