AMD Phenom II X2 555 and Athlon II X4 635 Performance

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AMD is launching a bevy of new processors today, targeted squarely at budget conscious consumers, looking to save a few bucks on the their next PC build. The new processors differ from previous offerings in their respective product families in terms of frequency, and of course their model names, but all are based on existing architectures and technology.

The new line-up of processors AMD is introducing today consists of the following products...

  • Phenom II X2 555  -  $99
  • Athlon II X4 635  -  $119
  • Athlon II X3 440  -  $84
  • Athlon II X2 255  -  $74
  • Phenom II X4 910e  -  $169

We decided to take the 3.2GHz Phenom II X2 555 and 2.9GHz Athlon II X4 635 for a spin and have their performance results posted on the pages ahead. Before we get to the numbers though, take a moment to peruse The Phenom II X2 555's and Athlon II X4 635's specifications in table below...


The AMD Phenom II X2 555 and Athlon II X4 635, Side By Side
 

AMD Phenom II X2 & Athlon II X4 Processors 
Specifications and Features

Phenom II X2

Athlon II X4

Model
Core Frequency
HyperTransport 3.0 Technology Link
Clock Multiplier
TDP (Thermal Design Power)
Number of CPU Cores
L1 Cache
L2 Cache
L3 Cache
Core Voltage (VID)
Manufacturing Process
Total Die Size
Packaging
Socket Compatibility
Memory Type
AMD PowerNow! Technology
MSRP
555
3.2 GHz
4000 GT/s
16x
80W
2
256KB (2 x 128K)
1MB (2 x 512KB)
6MB
0.85-1.425V
45nm
258mm²
AM3 938-pin
AM2+, AM3
DDR2, DDR3
3.0
$99
635
2.90 GHz
4000 GT/s
14.5x
95W
4
512KB (4x 128KB)
2MB (4 x 512KB)
0MB
0.825-1.425V
45nm
169mm²
AM3 938-pin
AM2+, AM3
DDR2, DDR3
3.0
$119


The hardcore AMD fans among you will notice that the two processors we've chosen to test here are the fastest of their respective product families--3.2GHz for the Phenom II X2 and 2.9GHz for the Athlon II X4. As we've mentioned though, not much else has changed over previous offerings than clock speed. As such, we won't detail the Phenom II and Athlon II architectures again here and will instead offer up this performance quick-take. If you would like a refresher, however, as to what makes the Phenom II and Athlon II tick, here are a couple of recent HotHardware articles with all of the pertinent details:

Those three articles cover all of the architectural information necessary to understand the technology at the heart of the new Phenom II X2 555 and Athlon II X4 635.


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