Components

CPUsBrowse GPUsBrowse MotherboardsBrowse RAMBrowse CasesBrowse PSUsBrowse CPU CoolersBrowse StorageBrowse

Peripherals

MonitorsBrowse KeyboardsBrowse MiceBrowse HeadphonesBrowse SpeakersBrowse WebcamsBrowse WiFi CardsBrowse

Smart Wizard

Get a complete build plan based on budget and goals.

Build Comparison

Compare complete builds side by side.

Part Comparison

Check specs, price, and value across parts.

Bottleneck Calculator

Measure CPU and GPU balance before you buy.

Power Calculator

Estimate wattage and PSU headroom.

Will It Run?

Test your hardware against popular games.

Completed Builds

Browse finished community setups.

Forums

Ask questions and join build discussions.

Components

CPUs GPUs Motherboards RAM Cases PSUs CPU Coolers Storage

Peripherals

Monitors Keyboards Mice Headphones Speakers Webcams WiFi Cards

Smart Wizard

Get a complete build plan based on budget and goals.

Build Comparison

Compare complete builds side by side.

Part Comparison

Check specs, price, and value across parts.

Bottleneck Calculator

Measure CPU and GPU balance before you buy.

Power Calculator

Estimate wattage and PSU headroom.

Will It Run?

Test your hardware against popular games.

Completed Builds

Browse finished community setups.

Forums

Ask questions and join build discussions.

Theme

TimeToPick

Build Smarter, Pick Better

TimeToPick helps you research parts, compare builds, compare offers, and make faster decisions across every stage of your next PC upgrade.

As an Amazon Associate I earn from qualifying purchases.

Build Tools

Builder Smart Wizard Build Compare Part Compare Bottleneck Calculator Power Calculator Will It Run?

Browse

CPUs GPUs Motherboards RAM Cases PSUs Storage Monitors

Community

Completed Builds Forums Build Guides

Account

My Builds Settings

© 2026 TimeToPick. All rights reserved.

About Contact Affiliate Disclosure Privacy Policy Terms of Service

Components

CPUsBrowse GPUsBrowse MotherboardsBrowse RAMBrowse CasesBrowse PSUsBrowse CPU CoolersBrowse StorageBrowse

Peripherals

MonitorsBrowse KeyboardsBrowse MiceBrowse HeadphonesBrowse SpeakersBrowse WebcamsBrowse WiFi CardsBrowse

Smart Wizard

Get a complete build plan based on budget and goals.

Build Comparison

Compare complete builds side by side.

Part Comparison

Check specs, price, and value across parts.

Bottleneck Calculator

Measure CPU and GPU balance before you buy.

Power Calculator

Estimate wattage and PSU headroom.

Will It Run?

Test your hardware against popular games.

Completed Builds

Browse finished community setups.

Forums

Ask questions and join build discussions.

Components

CPUs GPUs Motherboards RAM Cases PSUs CPU Coolers Storage

Peripherals

Monitors Keyboards Mice Headphones Speakers Webcams WiFi Cards

Smart Wizard

Get a complete build plan based on budget and goals.

Build Comparison

Compare complete builds side by side.

Part Comparison

Check specs, price, and value across parts.

Bottleneck Calculator

Measure CPU and GPU balance before you buy.

Power Calculator

Estimate wattage and PSU headroom.

Will It Run?

Test your hardware against popular games.

Completed Builds

Browse finished community setups.

Forums

Ask questions and join build discussions.

Theme

TimeToPick

Build Smarter, Pick Better

TimeToPick helps you research parts, compare builds, compare offers, and make faster decisions across every stage of your next PC upgrade.

As an Amazon Associate I earn from qualifying purchases.

Build Tools

Builder Smart Wizard Build Compare Part Compare Bottleneck Calculator Power Calculator Will It Run?

Browse

CPUs GPUs Motherboards RAM Cases PSUs Storage Monitors

Community

Completed Builds Forums Build Guides

Account

My Builds Settings

© 2026 TimeToPick. All rights reserved.

About Contact Affiliate Disclosure Privacy Policy Terms of Service

AMD Phenom II X2 B55 Price, Specs & Reviews | TimeToPick

Components

CPUsBrowse GPUsBrowse MotherboardsBrowse RAMBrowse CasesBrowse PSUsBrowse CPU CoolersBrowse StorageBrowse

Peripherals

MonitorsBrowse KeyboardsBrowse MiceBrowse HeadphonesBrowse SpeakersBrowse WebcamsBrowse WiFi CardsBrowse

Smart Wizard

Get a complete build plan based on budget and goals.

Build Comparison

Compare complete builds side by side.

Part Comparison

Check specs, price, and value across parts.

Bottleneck Calculator

Measure CPU and GPU balance before you buy.

Power Calculator

Estimate wattage and PSU headroom.

Will It Run?

Test your hardware against popular games.

Completed Builds

Browse finished community setups.

Forums

Ask questions and join build discussions.

Components

CPUs GPUs Motherboards RAM Cases PSUs CPU Coolers Storage

Peripherals

Monitors Keyboards Mice Headphones Speakers Webcams WiFi Cards

Smart Wizard

Get a complete build plan based on budget and goals.

Build Comparison

Compare complete builds side by side.

Part Comparison

Check specs, price, and value across parts.

Bottleneck Calculator

Measure CPU and GPU balance before you buy.

Power Calculator

Estimate wattage and PSU headroom.

Will It Run?

Test your hardware against popular games.

Completed Builds

Browse finished community setups.

Forums

Ask questions and join build discussions.

Theme

Home
CPUs
AMD Phenom II X2 B55

AMD

AMD Phenom II X2 B55

AM3DDR2/DDR32C / 2T80WCallisto45nmEnd-of-life

Price

$0

CPU image not available yet

Full Specifications

Detailed architecture, platform, memory, and feature data for this CPU.

Total Cores2

Total Threads2

Base Clock3.00 GHz

BCLK / Multiplier200 MHz / 15.0xx

CodenameCallisto

MicroarchitectureCallisto

Process Node45nm

FoundryGlobalFoundries

Die Size258.0 mm²

Transistors0.76 billion

Production StatusEnd-of-life

Market SegmentDesktop

Launch DateOct 1, 2009

Instruction Sets

MMX3DNow!SSESSE2SSE3SSE4AAMD64NX bitAMD-VABM

Similar Products

AMD AMD Athlon II 160u 1.8 GHz Single-Core OEM/Tray Processor

AMD AMD Athlon II 160u 1.8 GHz Single-Core OEM/Tray Processor

0 MB L3 Cache vs 6 MB

N/A

AMD AMD Athlon II X2 220 2.8 GHz Dual-Core OEM/Tray Processor

AMD AMD Athlon II X2 220 2.8 GHz Dual-Core OEM/Tray Processor

0 MB L3 Cache vs 6 MB

N/A

AMD AMD Athlon II X2 240 2.8 GHz Dual-Core OEM/Tray Processor

AMD AMD Athlon II X2 240 2.8 GHz Dual-Core OEM/Tray Processor

0 MB L3 Cache vs 6 MB

N/A

AMD AMD Athlon II X2 240 2.8 GHz Dual-Core Processor

AMD AMD Athlon II X2 240 2.8 GHz Dual-Core Processor

0 MB L3 Cache vs 6 MB

N/A

AMD AMD Athlon II X2 250 3 GHz Dual-Core Processor

AMD AMD Athlon II X2 250 3 GHz Dual-Core Processor

0 MB L3 Cache vs 6 MB

N/A

AMD AMD Athlon II X2 260 3.2 GHz Dual-Core OEM/Tray Processor

AMD AMD Athlon II X2 260 3.2 GHz Dual-Core OEM/Tray Processor

0 MB L3 Cache vs 6 MB

N/A

About This Product

The AMD Phenom II X2 B55 is a dual-core desktop processor from the Callisto family, featuring a 3 GHz base clock. It is an end-of-life product designed for the AM3 socket, offering basic computing capabilities. This CPU is suitable for light office tasks and web browsing, but its dual-core architecture limits performance in modern applications and gaming compared to contemporary multi-core processors.

Best for: Legacy System Revival

Pros

Affordable for basic computing needs
Compatible with DDR2/DDR3 memory
Suitable for legacy AM3 systems

Cons

Limited to two cores, poor multi-tasking
Outdated architecture, low performance
Not suitable for modern gaming or demanding applications

Verdict
“Only for reviving old AM3 systems for basic, non-demanding tasks.”

Performance Benchmarks

Cross-source performance, value, and efficiency at a glance

Scores are grouped by benchmark family so it is easy to compare raw speed, threaded output, and real-world value without mixing scales.

Geekbench 6PassMark

Cross-Platform

Geekbench 6

Single-Core

34711%

Multi-Core

5953%

Based on 6 user submissions.

Large Sample Pool

PassMark

Overall

2,5944%

Single-Thread

1,33027%

PassMark rank: #3,265

Compatible Motherboards (3)

See full guide →

MSI 880GMS-E35

880GMicro-ATX

N/A

ASUS Crosshair IV Extreme

AMD 890FXE-ATX

N/A

ASUS M4N68T-M V2

Micro-ATX

N/A

Compatible RAM (3722)

See full guide →

Mushkin Blackline 16 GB

2x8GBDDR3-1600

N/A

Mushkin Blackline 16 GB

2x8GBDDR3-2400

N/A

Mushkin Blackline 16 GB

2x8GBDDR3-2400

N/A

Mushkin Blackline 16 GB

2x8GBDDR3-2133

N/A

Compatible CPU Coolers (523)

DeepCool CAPTAIN 120

AIO 120mm39.3 dBA

$12.99

Evercool EC-NK804A-925EP

Air56mm28.2 dBA

N/A

ARCTIC Alpine AM4 CO

Air69mm

$17.99

SilenX EFZ-92HA2

Air56mm24.0 dBA

N/A

Complete the build

Build a PC with AMD Phenom II X2 B55

Create a fully compatible build with our System Builder.

Manual Builder →Smart Wizard →

User Reviews

Be the first to share your experience

Login to Review

Rating

0.0/5

No reviews yet

Sort byLogin to Review