Phenom II X4 B45

Details and Benchmarks for AMD Phenom II X4 B45

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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 B45 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,320 Rank: 1494
Rank Name Score Visual
1490 Xeon X5472 4,325
+0.1%
1491 Celeron G550 4,323
+0.1%
1492 Xeon E5507 4,322
+0%
1493 Pentium G2020T 4,322
+0%
1494 Phenom II X4 B45 4,320
1495 Xeon E5462 4,320
+0%
1496 Phenom II N930 4,319
+-0%
1497 Intel Core i7-620M 4,318
+-0%
1498 Pentium E6700 4,318
+-0%
1499 Phenom II X4 B97 4,318
+-0%

View full ranking →

Multicore Score

Multicore performance score for Phenom II X4 B45 based on multi-threaded benchmark results.

4,350 Rank: 1583
Rank Name Score Visual
1579 A10-4600M 4,351
+0%
1580 A6-3420M 4,351
+0%
1581 Core i3-540 4,351
+0%
1582 A6-3600 4,351
+0%
1583 Phenom II X4 B45 4,350
1584 Core 2 Duo E8600 4,350
+0%
1585 Pentium 4405Y 4,349
+-0%
1586 Athlon II X4 630 4,349
+-0%
1587 A8-5545M 4,349
+-0%
1588 A6-9200 4,349
+-0%

View full ranking →

Singlecore Score

Single-core performance score for Phenom II X4 B45 based on single-threaded benchmark results.

4,300 Rank: 1487
Rank Name Score Visual
1483 Pentium E6700 4,307
+0.2%
1484 Xeon E5620 4,304
+0.1%
1485 Xeon E5-2609 v2 4,304
+0.1%
1486 Pentium 2030M 4,303
+0.1%
1487 Phenom II X4 B45 4,300
1488 Athlon II X2 250 4,300
+0%
1489 Core i5 M 520 4,299
+-0%
1490 Core 2 Duo E7600 4,299
+-0%
1491 Phenom II X3 B77 4,299
+-0%
1492 Xeon E5630 4,297
-0.1%

View full ranking →

Workload Scores

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

Number Crunching

Aggregated score for Phenom II X4 B45 based on integer math, floating point math, and prime number computation benchmarks.

4,529 Rank: 1311
Rank Name Score Visual
1307 Core M3-7Y32 4,529
+0%
1308 Core i3-6100U 4,529
+0%
1309 Celeron N4100 4,529
+0%
1310 Celeron G3930 4,529
+0%
1311 Phenom II X4 B45 4,529
1312 Pentium G3250T 4,529
+0%
1313 Core i5-660 4,529
+0%
1314 A8-3870K 4,529
+0%
1315 Athlon Silver 7120U 4,529
+0%
1316 Celeron G4900T 4,528
+-0%

View full ranking →

Data Processing

Aggregated score for Phenom II X4 B45 based on data encryption, data compression, and string sorting benchmarks.

4,532 Rank: 1148
Rank Name Score Visual
1144 Core i5-4570T 4,532
+0%
1145 Core i7-4600M 4,532
+0%
1146 Core i5-3470T 4,532
+0%
1147 A10-5800B 4,532
+0%
1148 Phenom II X4 B45 4,532
1149 A10-9630P 4,532
+0%
1150 Xeon X5450 4,532
+0%
1151 Athlon II X4 635 4,532
+0%
1152 A8 PRO-7600B 4,532
+0%
1153 Pentium G4600T 4,531
+-0%

View full ranking →

Physics & Compute

Aggregated score for Phenom II X4 B45 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,503 Rank: 1386
Rank Name Score Visual
1382 Core M-5Y10 4,504
+0%
1383 A10-7400P 4,504
+0%
1384 Core i3-3227U 4,504
+0%
1385 Core i3-2328M 4,503
+0%
1386 Phenom II X4 B45 4,503
1387 A8-3800 4,503
+0%
1388 Pentium G3250T 4,503
+0%
1389 Core i3-560 4,503
+0%
1390 A8-6500B 4,503
+0%
1391 Athlon II X4 640 4,502
+-0%

View full ranking →

Phenom II X4 B45 Details

Ranking #1494 of 2060 in overall performance, the Phenom II X4 B45 sits well below the current generation of high-end processors but remains a relevant mid-tier option for legacy systems. As of March 2026, it's a 15-year-old processor originally released during the early days of the 2010s, built on AMD's 45 nm process and based on the K10 microarchitecture. While no longer competitive with modern CPUs, it still holds its own in basic computing and light productivity workloads due to its four cores and 64-bit support.

The Phenom II X4 B45 operates at a base frequency of 3.0 GHz with a turbo boost up to 3.1 GHz, clocked on a 1333 MHz bus. It features a total of 4 cores and 4 threads, with no simultaneous multithreading (SMT) support, and is designed for the LGA775 socket. Its TDP of 95 W reflects a power-efficient design by early-2010s standards, though it would be considered high by today’s efficiency benchmarks. The processor supports up to 32 GB of DDR3 memory across two channels, with a maximum bandwidth of 25.6 GB/s.

Despite lacking an integrated GPU in its core specification, the Phenom II X4 B45 is listed with HD Graphics 4000, which is a misattribution—this GPU belongs to Intel's Sandy Bridge architecture. The actual integrated graphics for the Phenom II line are minimal, with no unified graphics processing. Therefore, users relying on visual output must depend on a discrete GPU. The processor supports a variety of modern features for its era, including SSE4.1, SSE4.2, AVX2, AES-NI, and x86-64, enabling it to run 64-bit operating systems and perform efficiently in multimedia and encryption tasks.

In benchmark testing, the Phenom II X4 B45 achieves a single-core score of 4300, placing it at #1487 of 2060, and a multicore score of 4350, ranking #1583. Its overall score of 4320 positions it just below average in today’s performance landscape. While it outperforms older dual-core processors like the Core 2 Duo E7600 and the Pentium 4405Y, it trails behind many mid-range and budget CPUs from the 2010s, including the Core i3-540 and A10-4600M.

The processor is best suited for basic desktop use, light office applications, and older software environments. It is not ideal for gaming, content creation, or modern multitasking due to its limited memory bandwidth, lack of advanced instruction sets, and outdated architecture. For users maintaining legacy systems or upgrading older LGA775 platforms, the Phenom II X4 B45 offers a cost-effective upgrade path, though its performance ceiling is firmly rooted in the past.
Frequently Compared

AMD Ryzen 5 3500X 3 views

Intel Intel Celeron J3060 3 views

Intel Xeon D-1537 3 views

Intel Xeon E5-2687W v4 2 views

Intel Core i7-6500U 2 views

AMD Ryzen 3 PRO 2200GE 1 view

AMD Ryzen 9 PRO 3900 1 view

Intel Core i7-4910MQ 1 view

Intel Xeon Silver 4214 1 view

Intel Xeon Silver 4208 1 view

AMD Phenom II X4 B45

Main Specifications

Designer: AMD
Name: Phenom II X4 B45
Model Number: Q9650
Cores: 4
Threads: 4
Base Frequency: 3000 MHz
Socket: LGA775
Max CPUs: 1
TDP: 95 W

Cache Specifications

Memory Specifications

Supported Memory Type: DDR3/L/-RS 1333/1600
Memory Channels: 2
Maximum Memory: 0 GB
Maximum Bandwidth: 25.6 GB/s
ECC Support: No

PCI-Express Specifications

PCIe Revision: 2.0
PCIe Lanes: 16
PCIe Configuration: 1x16, 2x8, 1x8 2x4

Integrated Graphics

GPU: HD Graphics 4000
GPU Designer: Intel
GPU Max Frequency: 1200 MHz

Physical Specifications

Process: 45 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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