AMD Phenom II X4 840 specifications
|Type||CPU / Microprocessor|
|Family||AMD Phenom II X4|
|Model number ? ||840|
|CPU part numbers|
- HDX840WFK42GM is an OEM/tray microprocessor
- HDX840WFGMBOX is a boxed microprocessor
|Stepping codes||AADIC AD NADIC AD|
|Frequency ? ||3200 MHz|
|Bus speed ? ||667 MHz Memory controller|
One 2000 MHz 16-bit HyperTransport link
|Clock multiplier ? ||16|
|Package||938-pin organic micro-PGA|
|Weight||1.4oz / 39.2g (CPU)|
12.5oz / 353.6g (box)
|Introduction date||Jan 4, 2011|
|Architecture / Microarchitecture|
|Processor core ? ||Propus|
|Core stepping ? ||BL-C3|
|Manufacturing process||0.045 micron SOI|
|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 associative caches|
|Level 3 cache size||None|
|Virtual memory||256 TB|
- 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
|Integrated peripherals / components|
- The number of controllers: 1
Memory channels: 2
Channel width (bits): 72
Supported memory: DDR2-1066, DDR3-1333
DIMMs per channel: up to 2
Maximum memory bandwidth (GB/s): 21.3
|Other peripherals||HyperTransport 3 technology|
|Electrical / Thermal parameters|
|V core ? ||0.85V - 1.4V|
|Maximum operating temperature ? ||71°C|
|Thermal Design Power ? ||95 Watt|
Detailed side-by-side comparison
Historical price chart
The chart below shows official prices of AMD Phenom II X4 810, 840, 920 and 925 processors:
Q: Can I upgrade my Phenom II X4 840 processor?
A: Probably yes. CPU compatibility is determined by your motherboard. Please see CPU-Upgrade.com resource for CPU support list for your board.
Phenom II X4 840 Overclocking
Sorry, overclocking information is not available at this time.
Related news stories
AMD cuts prices of Phenom II and FX CPUs
Feb 28, 2012
: As you may know, AMD yesterday launched two FX microprocessors,
including company's first production CPU, operating faster than 4 GHz.
New product releases are usually accompanied by price drops of older
models, and it wasn't an exception this time. AMD cut prices on two
FX-Series models, and reduced prices for most of Phenom IIs. They also
added pricing for A-Series A6-3620 and A8-3820 Accelerated Processing
AMD drops prices on Phenom II models
Feb 01, 2011
: At the beginning of January, AMD announced three Phenom II
microprocessors, quad-core X4 840 and 975 Black Edition, and hexa-core
1065T. Although the launch of these models was extensively covered by
hardware news sites, and accompanied by large number of published
reviews of new Phenom IIs, none of the processors appeared in the
retail up to this moment. Today, these Phenom II models were added to
AMD price list. At the same time, AMD dropped prices by %2 - 13% on a
number of Phenom II chips.
AMD Phenom II X4 840 and 975: two weeks later
Jan 17, 2011
: On January 4th at CES show in Las Vegas AMD
announced three new desktop microprocessors - quad-core Phenom II
X4 840 and 975, and hexa-core 1065T. Quite a few hardware review sites
posted reviews of two quad-core Phenom IIs. Two weeks later, boxed
versions of Phenom II models are not yet available anywhere in the US.