Hardware fix for the infamous "TLB bug" was implemented in core revision B3 of Phenom and Third-Generation Opteron microprocessors. These CPUs no longer required the temporary fix, and, as a result, had better performance than B2-revision processors. Actual performance gain in newer processor was very dependent on application type. The gain could be unnoticeable in small, CPU-bound applications, or it could be as high as 60% - 70% in memory-intensive applications, such as WinRAR. On average, B3-revision CPUs had 5% - 10% higher performance. To reflect their better performance, AMD added 50 to their model numbers. For instance, this 2.2 GHz Phenom X4 processor with B3 core stepping has model number 9550, while older B2 stepping Phenom X4 CPU with the same internal clock frequency and CPU features has model number 9500.
AMD Phenom X4 9550 specifications
|Type||CPU / Microprocessor|
|Family||AMD Phenom X4|
|Model number ? ||9550|
|CPU part numbers||HD9550WCJ4BGH is an OEM/tray microprocessor|
HD9550WCGHBOX is a boxed microprocessor
|Stepping codes||JAAFB AA JAAHB AA|
|Frequency ? ||2200 MHz|
|Bus speed ? ||533 MHz Memory controller|
One 1800 MHz 16-bit HyperTransport link
|Clock multiplier ? ||11|
|Package||940-pin organic micro-PGA|
|Introduction date||Mar 27, 2008|
|Price at introduction||$209|
|Architecture / Microarchitecture|
|Processor core ? ||Agena|
|Core stepping ? ||B3|
|Manufacturing process||0.065 micron SOI|
450 million transistors
|Data width||64 bit|
|The number of cores||4|
|The number of threads||4|
|Floating Point Unit||Integrated|
|Level 1 cache size ? ||4 x 64 KB 2-way associative instruction caches|
4 x 64 KB 2-way associative data caches
|Level 2 cache size ? ||4 x 512 KB 16-way set associative caches|
|Level 3 cache size||2 MB 32-way set associative shared cache|
- MMX instructions
- 3DNow! technology
- SSE / Streaming SIMD Extensions
- SSE2 / Streaming SIMD Extensions 2
- SSE3 / Streaming SIMD Extensions 3
- SSE4a ?
- ABM / Advanced Bit Manipulation ?
- AMD64 / AMD 64-bit technology ?
- AMD-V / AMD Virtualization technology
- EVP / Enhanced Virus Protection ?
|Low power features|
- Cool'n'Quiet 2.0
- CoolCore technology ?
- Independent Dynamic Core Technology ?
- Dual Dynamic Power Management ?
- Core C1 and C1E states
- Package S1, S3, S4 and S5 states
|Integrated peripherals / components|
- The number of controllers: 1
Memory channels: 2
Channel width (bits): 72
Supported memory: DDR2-1066
DIMMs per channel: up to 2
Maximum memory bandwidth (GB/s): 17.1
|Other peripherals||HyperTransport 3 technology|
|Electrical / Thermal parameters|
|V core ? ||1.15V - 1.25V|
|Maximum operating temperature ? ||55°C - 70°C|
|Thermal Design Power ? ||95 Watt|
|Notes on AMD HD9550WCJ4BGH|
- On socket AM2+ platforms in the minimum performance state the processor runs at 1100 MHz / 1.05 Volt core voltage, and has TDP 58.3 Watt
- On socket AM2 platforms in the minimum performance state the processor runs at 1100 MHz / 1.15 - 1.25 Volt core voltage, and has TDP 67 Watt
Detailed side-by-side comparison
Historical price chart
The chart below shows official prices of AMD Phenom X4 9500, 9550, 9600, 9600 BE and 9650 processors:
Q: Can I upgrade my Phenom X4 9550 CPU?
A: Probably yes. Processor compatibility is determined by your motherboard. Please check CPU-Upgrade.com website for CPU support list for your board.
Phenom X4 9550 Overclocking
Sorry, overclocking information is not available at this time.