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AMD Phenom II X4 850 - HDX850WFK42GM / HDX850WFGMBOX

CPU » AMD » K10 families » Phenom II X4 » 850

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AMD Phenom II X4 850 specifications

General information
TypeCPU / Microprocessor
Market segmentDesktop
FamilyAMD Phenom II X4
Model number  ? 850
CPU part numbersHDX850WFK42GM is an OEM/tray microprocessor
HDX850WFGMBOX is a boxed microprocessor
Stepping codesCACDC AC   CADIC AD   NADIC AD
Frequency  ? 3300 MHz
Bus speed  ? 667 MHz Memory controller
One 2000 MHz 16-bit HyperTransport link
Clock multiplier  ? 16.5
Package938-pin organic micro-PGA
SocketsSocket AM2+
Socket AM3
Introduction date2nd quarter 2011
 
Architecture / Microarchitecture
MicroarchitectureK10
PlatformDragon
Processor core  ? Deneb
Core stepping  ? C3
Manufacturing process0.045 micron SOI
Die size258mm2
Data width64 bit
The number of cores4
The number of threads4
Floating Point UnitIntegrated
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 associative caches
Level 3 cache sizeNone
Virtual memory256 TB
MultiprocessingUniprocessor
Features
  • 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 3.0
  • CoolCore Technology  ? 
  • Dual Dynamic Power Management  ? 
  • Core C1 and C1E states
  • Package S0, S1, S3, S4 and S5 states
On-chip peripherals
  • Integrated 144-bit DDR2/DDR3 Memory Controller
  • HyperTransport 3 technology
 
Electrical / Thermal parameters
Thermal Design Power  ? 95 Watt
 

CPUs, related to AMD Phenom II X4 850

Model Cores /
Threads		 Freq. Turbo
freq.		 L2
cache		 L3
cache		 TDP Features Price
AMD Phenom II X4 family, Socket AM2+ / Socket AM3
   Phenom II X4 8504 / 43.3 GHz 2 MB 95 Watt 
   Phenom II X4 955 (125W, rev. C3)4 / 43.2 GHz 2 MB6 MB125 Watt 
   Phenom II X4 955 (95W, rev. C3, non-BE)4 / 43.2 GHz 2 MB6 MB95 Watt 
   Phenom II X4 B974 / 43.2 GHz 2 MB6 MB95 Watt 
   Phenom II X4 955 (125W, rev. C2, BE)4 / 43.2 GHz 2 MB6 MB125 WattUnlock 
   Phenom II X4 955 (125W, rev. C3, BE)4 / 43.2 GHz 2 MB6 MB125 WattUnlock 
   Phenom II X4 960T4 / 43 GHz3.4 GHz2 MB6 MB95 WattTBT, Unlock 
   Phenom II X4 B994 / 43.3 GHz 2 MB6 MB95 Watt 
   Phenom II X4 965 (125W, non-BE)4 / 43.4 GHz 2 MB6 MB125 Watt 
   Phenom II X4 965 (140W, BE)4 / 43.4 GHz 2 MB6 MB140 WattUnlock$81
   Phenom II X4 965 (125W, BE)4 / 43.4 GHz 2 MB6 MB125 WattUnlock 
   Phenom II X4 970 (rev. C3)4 / 43.5 GHz 2 MB6 MB125 WattUnlock$142
   Phenom II X4 970 (rev. E0)4 / 43.5 GHz 2 MB6 MB125 WattUnlock 
   Phenom II X4 9754 / 43.6 GHz 2 MB6 MB125 WattUnlock$153
   Phenom II X4 9804 / 43.7 GHz 2 MB6 MB125 WattUnlock$163
AMD Phenom II X4 family, K10 micro-architecture, Other sockets
   Phenom II X4 9204 / 42.8 GHz 2 MB6 MB140.8 Watt 
   Phenom II X4 9404 / 43 GHz 2 MB6 MB139.6 WattUnlock 
Other families, K10 micro-architecture, Socket AM2+ / Socket AM3
   Athlon II 170u1 / 12 GHz 1 MB 20 Watt 
   Athlon X2 5200+ (0.045 micron)2 / 22.3 GHz 1 MB 65 Watt 
   Sempron X2 1902 / 22.5 GHz 1 MB 45 Watt 
   Athlon II X2 2802 / 23.6 GHz 2 MB 65 Watt$49
   Phenom II X2 570 BE2 / 23.5 GHz 1 MB6 MB80 WattUnlock 
   Phenom II X3 B773 / 33.2 GHz 1.5 MB6 MB95 Watt 
   Athlon II X3 4603 / 33.4 GHz 1.5 MB 95 Watt$69

 • Highlighted numbers and features indicate whether specific processor performs better or worse than Phenom II X4 850

 • Within each category, the CPUs are sorted from slower (at the top) to faster (at the bottom)

 • The 'Price' column shows official AMD prices as of Apr 29, 2013. Prices for obsolete and tray-only processors are not provided.

 • List of related CPUs is not complete.

 • Features abbreviations:

TBT - Dynamic Acceleration / Turbo Boost
Unlock - Unlocked multiplier

FAQ

Q: I have an AMD Phenom II X4 850 CPU. Is it possible to upgrade it?
A: Probably yes. Processor compatibility is determined by your motherboard. Please see CPU-Upgrade.com website for CPU support list for your board.

AMD Phenom II X4 850 Overclocking

Sorry, overclocking information is not available at this time.

Pictures (0)

News

AMD Athlon II 270 and Phenom II 850 are available for pre-order
Jul 13, 2011: The last refresh of Athlon II and Phenom II families in May of this year included several speed-bump processors, and the most notable among them being the fastest AMD x86 chip, Phenom II X4 980. That socket AM3 line-up refresh didn't include a few SKUs, such as Athlon II 270 an 650, and Phenom II 850, that were expected to launch in the second quarter. Based on Athlon II and Phenom II product specifications, published on AMD website, we can conclude that these three microprocessors were launched.



May 2011 launch of desktop CPUs: one month later
Jun 03, 2011: Exactly one month ago, on May 3, AMD launched a few speed bump versions of Athlon II and Phenom II microprocessors. Reviews of the flagship quad-core Phenom II 980 model were posted all over the net, and it was added to official pricelist along with Athlon II X3 460. Specifications of three additional processors, Athlon II X3 425e, Athlon II X4 620e, and Phenom II X2 570, were posted on AMD website. Overall, the launch of 5 new chips seemed like a newsworthy event, expect that the processors never made it to the stores.



New AMD CPUs for Q2 2011
Apr 27, 2011: In the past few weeks there were several reports of upcoming Phenom II microprocessors, including quad-core 850 and 980 models, and dual-core 570. Today AMD published desktop processor roadmap for the second quarter of this year, which confirms imminent launch of these CPUs, and also shows a few soon to be released Athlon II SKUs.


CPU ID (1)

CPUID Tools

CPUID features of Phenom II X4 850

NOTE: The CPU ID information below was taken from one CPU and may include features that are not present in all different steppings of the AMD Phenom II X4 850 CPU.

Manufacturer:AMD
CPU Family:Phenom II X4
Model Number:850
Frequency:3299 MHz
Part number:
HDX850WFK42GM
Stepping Code:
Comment:
Submitted by:al marcy
General information
Vendor:AuthenticAMD
Processor name (BIOS):AMD Phenom(tm) II X4 850 Processor
Cores:4
Logical processors:4
Processor type:Original OEM Processor
Core stepping:BL-C3
CPUID signature:100F53
Family:16 (010h)
Model: 5 (05h)
Stepping: 3 (03h)

Cache: L1 data L1 instruction L2
Size: 4 x 64 KB 4 x 64 KB 4 x 512 KB
Associativity: 2-way set
associative		 2-way set
associative		 16-way set
associative
Line size: 64 bytes 64 bytes 64 bytes
Lines per tag: 1 1 1
 
Instruction set extensionsAdditional instructions
MMX Advanced Bit manipulation
AMD extensions to MMX CLFLUSH
3DNow! CMOV
Extensions to 3DNow! CMPXCHG16B
SSE CMPXCHG8B
SSE2 FXSAVE/FXRSTORE
SSE3 MONITOR/MWAIT
SSE4A POPCNT
  PREFETCH/PREFETCHW
  RDTSCP
  SKINIT / STGI support
  SYSCALL/SYSRET
  SYSENTER/SYSEXIT
 
Major featuresOther features
On-chip Floating Point Unit 1 GB large page support
64-bit / Intel 64 100MHz multiplier control
NX bit/XD-bit 128-bit SSE instructions
Secure Virtual Machine (Virtualization) 36-bit page-size extensions
PowerNow! / Cool'n'Quiet Advanced programmable interrupt controller
  Core multi-processing legacy mode
  Debugging extensions
  Extended APIC space
  Hardware P-state control
  Hardware thermal control
  Instruction based sampling
  LAHF / SAHF support in 64-bit mode
  LBR virtualization
  LOCK MOV CR0 means MOV CR8
  Machine check architecture
  Machine check exception
  Memory-type range registers
  Misaligned SSE mode
  Model-specific registers
  Nested page tables
  OS visible workaround
  Page attribute table
  Page global extension
  Page-size extensions (4MB pages)
  Physical address extensions
  SVM lock
  Software thermal control
  Support for NRIP save
  THERMTRIP
  TSC rate is ensured to be invariant across all states
  Temperature sensor
  Time stamp counter
  Virtual 8086-mode enhancements
  Watchdog timer support

Comments (2)

You're welcome to post suggestions, corrections, your own personal AMD Phenom II X4 850 review, or your experience with the microprocessor. Please do not ask upgrade and troubleshooting questions, and do not start discussions.

L3 cache

2011-09-19 16:41:36
Posted by: gr

I unlocked the L3 cache on a M4A77T with ACC. It shows 6MB of L3 cache in BIOS after that. Have not tested stability of it yet. CADIC AD stepping.

 

2011-11-08 14:43:08
Posted by: g r

Addition to my previous comment. We have two of these. Both appear stable after unlocking L3 cache. No hiccups. Stock settings. Asus Probe is still showing temp readings after unlocking L3 cache.

Last modified: 14 May 2013
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