AMD Phenom X4 9950 Black Edition 2.6 GHz Socket AM2+ desktop CPU HD995ZXAJ4BGH 125W 

Here is a 64-bit Socket AM2+ quad-core CPU from AMD running at 2600 MHz.  This one is known as the Phenom X4 9950 Black Edition, meaning that it has an unlocked multiplier. AMD's part number is HD995ZXAJ4BGH

It uses the "Agena" core and 65 nanometer traces.  It includes 2MB of L2 cache plus 2MB of L3 cache and its own memory controller for DDR2 SDRAM with a 1.8 GHz Hyper Transport Link.  It draws 125W of power
. It has AMD's hardware correction for the TLB bug which plagued earlier Phenoms.

This CPU is compatible with many AMD socket AM2+ and even AM2 desktop systems, but the buyer should check their system documentation for compatibility.  A BIOS upgrade may be necessary. Other systems can not handle a 125W CPU.  If you are not sure, ask me.  I would rather tell you "no" than waste our time for a return over compatibility.

You will receive only the CPU as pictured here (but not the exact one).  A heatsink and a fan are required but not included with this item.   If you need a small tube of thermal paste, just let me know at the time of payment.


Your CPU will arrive working with all pins straight and as pictured.  I make sure it will drop into a socket AM2+, will insert the pins in a protective foam pad, and enclose it in a plastic clamshell before shipping.

I welcome questions from interested bidders and offer a 30 day return privilege. I will consolidate shipping for winners of multiple items within 3 days.

Please let me know within three days of purchase if you can't use PayPal or prefer not to use that payment method.  However, I accept credit card payments only through PayPal.

Shipping to any address in the U.S. with a zip code is FREE via USPS first class mail. I ship only to the address PayPal gives me.  I offer inexpensive USPS first class international shipping everywhere else, if you don't mind the delay and lack of meaningful tracking.

Also, let me know if you need a shipping method not listed here or if you need a quote for consolidated shipping.  I can use any service from FedEx or US Postal Service and will quote you the same postage cost I pay. 

International bidders: You are responsible for paying any additional customs duties or VAT your country may charge you.

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General information
TypeCPU / Microprocessor
Market segmentDesktop
Family
AMD Phenom X4
Model number  ? 9950
CPU part numbers
  • HD995ZXAJ4BGH is an OEM/tray microprocessor
  • HD995ZXAGHBOX is a boxed microprocessor with fan and heatsink
Stepping codeJAAAB AA
Frequency  ? 2600 MHz
Bus speed  ? One 2000 MHz 16-bit HyperTransport link (4 GT/s)
Clock multiplier  ? 13
Package940-pin organic micro-PGA
SocketsSocket AM2
Socket AM2+
Introduction date1st quarter 2009
Architecture / Microarchitecture
MicroarchitectureK10
PlatformCartwheel (mainstream platform with AMD 780G chipset)
Spider (performance platform with AMD 790FX/790GX chipsets)
Processor core  ? Agena
Core stepping  ? DR-B3
CPUID100F23
Manufacturing process0.065 micron silicon-on-insulator (SOI) technology
450 million transistors
Die size285mm2
Data width64 bit
The number of CPU cores4
The number of threads4
Floating Point UnitIntegrated
Level 1 cache size  ? 4 x 64 KB 2-way set associative instruction caches
4 x 64 KB 2-way set associative data caches
Level 2 cache size  ? 4 x 512 KB 16-way set associative caches
Level 3 cache size2 MB 32-way set associative shared cache
MultiprocessingUniprocessor
Features
  • MMX instructions
  • Extensions to MMX
  • 3DNow! technology
  • Extensions to 3DNow!
  • SSE / Streaming SIMD Extensions
  • SSE2 / Streaming SIMD Extensions 2
  • SSE3 / Streaming SIMD Extensions 3
  • SSE4a  ? 
  • AMD64 / AMD 64-bit technology  ? 
  • EVP / Enhanced Virus Protection  ? 
  • AMD-V / AMD Virtualization technology
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
Integrated graphicsNone
Memory controllerThe 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 peripheralsHyperTransport 3.0 technology
Electrical / Thermal parameters
V core  ? 1.2V - 1.3V
V NorthBridge1.3V
Maximum operating temperature  ? 55°C - 61°C
Thermal Design Power  ? 125 Watt
Notes on AMD Phenom X4 9950 (125W)
  • The processor has unlocked multiplier
  • On socket AM2+ platforms in the minimum performance state the processor runs at 1300 MHz / 1.05 Volt core voltage, and has TDP 68.9 Watt
  • On socket AM2 platforms in the minimum performance state the processor runs at 1300 MHz / 1.2 - 1.3 Volt core voltage, and has TDP 88.2 Watt

. The processor you are purchasing is a delicate part which two different people have inspected. Each of them was able to insert this CPU into an appropriate socket, but we probably have more experience than you. Please do not be offended if we include some installation instructions.

Here's the technique we use to straighten pins. It requires sunlight, a magnifier, a utility blade and perhaps a safety pin. First, hold the CPU at about a 10 degree angle to the socket and see if you can insert the outer row of pins for only one edge. If you feel any resistance, do not push down. The resistance point helps you locate the troublesome area. Use the utility blade along the sides of the pins to push up any pin that isn't upright. (If the pin is almost flattened you can raise up the end by inserting a safety pin underneath it and lifting the back of the safety pin). Then use the side of the utility blade to make the CPU pin stand up perpendicular to the base, in a line the other pins in that row. Try to avoid any pressure near the base of the pin (which is where they break off). Repeat this process for each of the 4 edges. Then decrease the angle so the inner rows of pins go in the holes and on all 4 sides. Again, try to locate any resistance points for each side and repeat as necessary. Eventually you should be able to use the CPU. Do not spend too much time on this.