AMD Phenom II X4 Deneb

hi there ........
can i get some technical information regarding AMD Phenom II X4 Deneb ?...
as i want to buy a new processor can you help me in this query?

AMD Phenom II X4 (Deneb) 940:

The original 65nm Phenom gave a new level to processor market.

AMD must have pulled out all the stops in bringing the K10.5 to be called precisely Deneb.

The Phenom II 940 - and the Phenom II 920 - are the first two 45nm Deneb processors that are being released by AMD - and AMD is finally hitting the clock speeds it was originally intending for the 65nm parts, with the Phenom II 920 coming in at 2.8GHz and the Phenom II 940 running at 3.0GHz.

Geometry shrink to 45nm (from 65nm)
L3 shared cache increased to 6MB (from 2MB), L3 cache 2 cycles faster than on previous Phenom, increased DRAM bandwidth cores flush L1+L2 caches to

L3 on halt to save power path based indirect branch prediction double the bandwidth for in-core probing larger load/store and floating point buffering
reduced missed buffer lifetime improved LOCK pipelining floating point register-to-register MOV improvements

For quick features:
faster, larger L3 cache, more memory bandwidth, slightly faster core.

Technical Specifications:

• AMD Phenom II X4 920: 2.8GHz (14x200) multiplier-locked
  
• AMD Phenom II X4 940 BE: 3.0GHz (15x200) multiplier-unlocked
  
• 45nm DSL SOI (silicon on insulator) technology
  
• approx. 758M transistors
  
• approx. 258mm2 die size
  
• max case temp of 62'C
  
• L1 cache: 64KB code + 64KB data per core (512KB total)
  
• L2 cache: 512KB unified code/data per core (2MB total)
  
• L3 cache: 6MB shared unified code/data cache
  
• dual 64-bit memory channels can be ganged to 128 bits
  
• Memory Controller: Supports up to DDR2-1066 and DDR3-1800 up to 17.1GB/
• sec
  
• one HT3.0 link, 1.8GHz 16 bit in / 16 bit out, up to 14.4GB/sec
  
• 940 pin grid array
  
• Vcore between 0.875-1.5V
  
• Max 125W TDP

My view on it Special Features:

• Brand: AMD
  
• Series: Phenom II X4
  
• Model: HDZ940XCGIBOX

CPU Socket Type

CPU Socket Type: Socket AM2+

Tech Spec

• Core: Deneb
  
• Multi-Core: Quad-Core
  
• Name: Phenom II X4 940
  
• Operating Frequency: 3.0GHz
  
• Hyper Transports: 3600MHz
  
• L1 Cache: 4 x 128KB
  
• L2 Cache: 4 x 512KB
  
• L3 Cache: 6MB
  
• Manufacturing Tech: 45 nm
  
• Voltage: 0.875-1.5V
  
• Thermal Power: 125W

Past three years were extremely competitive for AMD. As with ATI, they are struggling in each and every of its major manufacturing areas. The latest attempt of AMD on has diverted the hearts of the gamers with the new Dragon processor platform. The first 45nm quad-core AMD processor with Deneb core, as one of the powerful processor the Phenom II family.

Phenom II is manufactured by the 45nm process, that reduces production costs, power leakages and allows higher operational frequency. Phenom II X4 940 runs at 3GHz and at the same time with lower TDP - 125W. The another major change is in the cache memory of Phenom II. The processor has at its disposal 4x512KB L2 cache just like Phenom X4, but its L3 is increased 3 times, to the amount of 6MB. The large quantity of L3 should be most effective with volumetric applications - like games for example. AMD also claim that the L3 cache of Phenom X4 II has approximately twice lover latency, thus providing additional performance bonus.

As these are the changes which are generally observerved in the market, AMD had done in the past year. There are incredible improvements in the processors capability to buffer information and to perform floating point computations improved in its power efficiency in such a mode, where Phenom X4 II could use two times less of what its predecessor needs. Final impression though is that AMD didn't look for some new approaches at things.

Basically there are two versions are entering as competitors : the Phenom II X4 940 BE with 3.0 GHz and the 920 with 2.8 GHz. AMD's new generation will mainly be compared to the Core 2 Quads until Intel introduces the Havendale and Lynnfield architectures to the mass market.

As compared to the first Phenom X4, Agena, the Deneb is manufactured in a 45 nanometer structure. Thus lower energy consumption and higher clock speeds will be possible. The first production of Phenom suffered from low core frequencies, but its successor comes with 3.0 GHz is running about 400 MHz faster than the top model of the Agena series. The 45 nanometer structure provides the newcomer with unexpected clock speed resources as several overclocking tests revealed.

Level 2 of cache memory is kept at 512 Ki Byte per CPU core as all in all 2,048 Ki Byte and thus is twice as big of Intel's Core i7 series. Additionally it has level 3 of cache memory which is used by all cores. For the Phenom II AMD increases this cache from 2 to 6 mili Byte of the L3 cache of the Core i7 is even bigger and offers 8 Mi Byte, but contrary to the Phenom II version it always contains the data of the L1 and L2 while the L3 cache of the AMD CPU is mostly working without the doubled data storage. Thus some accesses need more time to be handled, but the available overall capacity is bigger.

AMD also increased IPC rate (Instructions per Second), which stands for the number of operations per cycle. AMD enhanced efficiency is supposed to deliver a performance benefit of about 5 percent. If the chip is not presurised on the other hand it requires less power than before - energy efficiency has been among the top priorities during development.