AMD Phenom X3 8400: specs and benchmarks

Price now 9.95$
Games supported 51%
AMD Phenom X3 8400
AMD Phenom X3 8400
  • Interface
  • Core clock speed
  • Max video memory
  • Memory type
  • Memory clock speed
  • Maximum resolution
Year of release 2008
Performance 1.07


AMD started AMD Phenom X3 8400 sales on March 2008. This is Toliman architecture desktop processor primarily aimed at office systems. It has 3 cores and 3 threads, and is based on 65 nm manufacturing technology, with a maximum frequency of 2100 MHz and a locked multiplier.

Compatibility-wise, this is AMD Socket AM2+ processor with a TDP of 95 Watt.

It provides poor benchmark performance at


of a leader's which is AMD EPYC 7H12.

General info

Phenom X3 8400 processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in performance rating2371
Value for money7.32
Market segmentDesktop processor
Architecture codenameToliman (2008)
Release dateMarch 2008 (14 years ago)
Current price$9.95 of 18494 (Xeon Platinum 8280M)
Value for money

To get the index we compare the characteristics of the processors and their cost, taking into account the cost of other processors.

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Technical specs

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores3 (Tri-Core)
Boost clock speed2.1 GHzof 5.8 (Core i9-13900K)
L1 cache128 KB (per core)of 1536 (EPYC Embedded 3401)
L2 cache512 KB (per core)of 12288 (Core 2 Quad Q9550)
L3 cache2 MB (shared)of 32 (Ryzen Threadripper 1998)
Chip lithography65 nmof 5 (Apple M1)
Die size285 mm2
Number of transistors450 millionof 9900000 (Ryzen 9 7950X)
64 bit support+
Windows 11 compatibility-


Information on Phenom X3 8400 compatibility with other computer components and devices: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration1of 8 (Opteron 842)
Thermal design power (TDP)95 Wattof 400 (Xeon Platinum 9282)

Virtualization technologies

Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.


Benchmark performance

Single-core and multi-core benchmark results of Phenom X3 8400. Overall benchmark performance is measured in points in 0-100 range, higher is better.

Overall score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Phenom X3 8400 1.07
  • Passmark
  • GeekBench 5 Single-Core
  • GeekBench 5 Multi-Core


Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

Benchmark coverage: 69%

Phenom X3 8400 1079

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

Benchmark coverage: 38%

Phenom X3 8400 189

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

Benchmark coverage: 38%

Phenom X3 8400 537

Game benchmarks

Relative perfomance

Overall Phenom X3 8400 performance compared to nearest competitors among desktop CPUs.

Intel equivalent

We believe that the nearest equivalent to Phenom X3 8400 from Intel is Celeron G1101, which is faster by 1% and higher by 5 positions in our rating.

Intel Celeron G1101 Celeron G1101

Here are some closest Intel rivals to Phenom X3 8400:

Similar processors

Here is our recommendation of several processors that are more or less close in performance to the one reviewed.

AMD Athlon II X2 250 Athlon II X2 250
Intel Pentium E6600 Pentium E6600
Intel Core 2 Duo E8200 Core 2 Duo E8200
Intel Celeron G1101 Celeron G1101
Intel Pentium E5700 Pentium E5700
AMD Athlon II X2 260 Athlon II X2 260

Recommended graphics cards

These graphics cards are most commonly used with Phenom X3 8400 according to our statistics.

User rating

Here is the rating given to the reviewed processor by our users. Let others know your opinion by rating it yourself.

3 17 ratings

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Questions and comments

Here you can ask a question about Phenom X3 8400, agree or disagree with our judgements, or report an error or mismatch.