Phenom II X4 805

Details and Benchmarks for AMD Phenom II X4 805

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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 Phenom II X4 805 based on all benchmark results gathered. Look at this like a meta score, you will find more specific workload ratings below.

4,152 Rank: 1740
Rank Name Score Visual
1736 Core i3-4012Y 4,158
+0.1%
1737 Celeron 3965Y 4,156
+0.1%
1738 E2-9010 4,156
+0.1%
1739 Intel Core i5-520M 4,153
+0%
1740 Phenom II X4 805 4,152
1741 A6-3600 4,151
+-0%
1742 A6-9220 4,150
+-0%
1743 A4-3330MX 4,150
+-0%
1744 A8-7410 4,148
-0.1%
1745 Core i5-2467M 4,147
-0.1%

View full ranking →

Multicore Score

Multicore performance score for Phenom II X4 805 based on multi-threaded benchmark results.

4,435 Rank: 1370
Rank Name Score Visual
1366 Pentium B960 4,435
+0%
1367 Core i5-6300U 4,435
+0%
1368 Core i5-4200M 4,435
+0%
1369 Core i5-4350U 4,435
+0%
1370 Phenom II X4 805 4,435
1371 Core i5-L16G7 4,435
+0%
1372 Athlon X4 840 4,435
+0%
1373 Athlon PRO 3045B 4,434
+-0%
1374 Pentium G3260 4,433
+-0%
1375 A10-7850K 4,433
+-0%

View full ranking →

Singlecore Score

Single-core performance score for Phenom II X4 805 based on single-threaded benchmark results.

3,963 Rank: 1785
Rank Name Score Visual
1781 Core 2 Duo T5750 3,975
+0.3%
1782 Pentium T4300 3,972
+0.2%
1783 Pentium N4200 3,966
+0.1%
1784 Celeron 1007U 3,965
+0.1%
1785 Phenom II X4 805 3,963
1786 Core 2 Duo T7600 3,962
+-0%
1787 Intel Core i7-640UM 3,961
-0.1%
1788 Pentium 4405Y 3,960
-0.1%
1789 Athlon 64 X2 6000+ 3,960
-0.1%
1790 Celeron 2957U 3,958
-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 805 based on integer math, floating point math, and prime number computation benchmarks.

4,519 Rank: 1397
Rank Name Score Visual
1393 Core i7-2655LE 4,519
+0%
1394 Core i5-2510E 4,519
+0%
1395 Athlon II X4 630 4,519
+0%
1396 A8-7410 4,519
+0%
1397 Phenom II X4 805 4,519
1398 Core i5-2450M 4,518
+-0%
1399 Core i3-6006U 4,518
+-0%
1400 Atom C3538 4,518
+-0%
1401 Core i3-5015U 4,518
+-0%
1402 Core i3-5005U 4,518
+-0%

View full ranking →

Data Processing

Aggregated score for Phenom II X4 805 based on data encryption, data compression, and string sorting benchmarks.

4,517 Rank: 1233
Rank Name Score Visual
1229 Core i5-4200M 4,517
+0%
1230 Xeon X5472 4,517
+0%
1231 A6-3650 4,517
+0%
1232 Phenom II X4 905e 4,517
+0%
1233 Phenom II X4 805 4,517
1234 Core i7-5600U 4,516
+-0%
1235 Core i7-3687U 4,516
+-0%
1236 Athlon II X4 620 4,516
+-0%
1237 Xeon E3-1220L v2 4,516
+-0%
1238 Athlon II X4 610e 4,516
+-0%

View full ranking →

Physics & Compute

Aggregated score for Phenom II X4 805 based on physics simulation and extended instruction set (SSE/AVX) benchmarks.

4,499 Rank: 1416
Rank Name Score Visual
1412 Celeron G1840T 4,499
+0%
1413 Celeron G1820T 4,499
+0%
1414 Core i3-540 4,499
+0%
1415 Core i3-530 4,499
+0%
1416 Phenom II X4 805 4,499
1417 Athlon II X4 600e 4,499
+0%
1418 Celeron G3900T 4,498
+-0%
1419 Pentium Silver N5000 4,498
+-0%
1420 Celeron G1830 4,498
+-0%
1421 Pentium G870 4,498
+-0%

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Phenom II X4 805 Details

As of March 2026, the AMD Phenom II X4 805 stands as a relic of early 2009, a four-core desktop processor built on the Deneb microarchitecture and launched during a time when 45 nm fabrication was state-of-the-art. Though long surpassed by modern processors, its performance remains a point of interest for retro computing enthusiasts and budget systems. With a base clock of 2.5 GHz and a locked multiplier, the Phenom II X4 805 operates on the Socket AM3 platform, requiring an AMD 700, 800, or 900 Series chipset for compatibility. It features a substantial 3.815 MiB of L3 cache and supports DDR3 memory up to 1333 MT/s in dual-channel mode, delivering a memory bandwidth of 21.3 GB/s. The processor is designed for desktop use and has a thermal design power (TDP) of 95 W, indicating relatively high power consumption for its era, necessitating adequate cooling solutions.

The Phenom II X4 805's benchmark results place it firmly in the lower tier of modern processor rankings. In overall performance, it achieves a Passmark score of 4152, ranking #1740 out of 2060 processors, with a single-core score of 3963 (#1785) and a multicore score of 4435 (#1366). These figures reveal a processor that, while capable for its time, is significantly outpaced by current mainstream and high-end CPUs. The multicore performance, though higher than single-core, still lags far behind modern 12- and 16-core processors, which dominate the top 50 lists with scores exceeding 7,000 and even 12,000 in the case of workstation-grade models like the Ryzen Threadripper PRO 9995WX.

Despite its age, the Phenom II X4 805 supports several modern features, including ECC memory, hardware virtualization via AMD-V, and a range of instruction set extensions such as SSE4a, 3DNow!, and ABM. These capabilities make it suitable for certain legacy applications, including virtualization and server-like workloads, particularly in systems where cost and power efficiency are prioritized over raw performance. However, the lack of integrated graphics means users must rely on a discrete GPU or a motherboard with chipset-level graphics support. With a die area of 258 mm² and 758 million transistors, the chip reflects the design priorities of its time, focusing on core count and cache size rather than energy efficiency.

In conclusion, the Phenom II X4 805 is best suited for legacy systems, retro builds, or as a budget-friendly option for basic computing tasks. While it is no longer competitive in any modern performance benchmark, its availability and low cost make it a viable choice for users maintaining older hardware ecosystems. As of 2026, it remains a testament to AMD’s early foray into multi-core desktop processors, even as the industry has moved toward more advanced architectures and power-efficient designs.
Frequently Compared

AMD Ryzen 7 2700X 7 views

AMD Ryzen 5 3500X 3 views

AMD A6-3620 3 views

AMD Phenom II X2 555 3 views

AMD Ryzen 5 3600 2 views

AMD A8-7200P 2 views

AMD Ryzen Threadripper 1900X 1 view

Intel Core i7-5500U 1 view

Intel Xeon D-1531 1 view

Intel Intel Celeron N3160 1 view

AMD Phenom II X4 805

Main Specifications

Designer: AMD
Name: Phenom II X4 805
Cores: 4
Threads: 4
Base Frequency: 2500 MHz
Clock Multiplier: 12.5xx (locked)
Core Name: Deneb
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: 3.815 MiB

Memory Specifications

Supported Memory Type: DDR3

Physical Specifications

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

CPU Features

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