AMD Athlon II X2 255e 

First seen on January, 2013
  • 3.1 GHz
  • Dual core

Features Key features of the AMD Athlon II X2 255e

clock speed

Athlon II X2 255e
3.1 GHz
Athlon II X3 405e
2.3 GHz
Athlon II X2 245e
2.9 GHz

turbo clock speed

Athlon II X2 255e
0 GHz
Athlon II X3 405e
n.d.
Athlon II X2 245e
n.d.

L2 cache

Athlon II X2 255e
2 MB
Athlon II X3 405e
2 MB
Athlon II X2 245e
2 MB

L3 cache

Athlon II X2 255e
0 MB
Athlon II X2 245e
1 MB
Athlon II X3 405e
0.5 MB

TDP

Athlon II X2 255e
45W
Athlon II X3 405e
45W
Athlon II X2 245e
45W

Specifications Full list of technical specs

summary

Clock speed 3.1 GHz
Turbo clock speed 0 GHz
Cores Dual core
Is unlocked No

features

Has a NX bit Yes
Has virtualization support No
Instruction set extensions
  1. SSE4a
  2. 3DNow!
  3. SSE2
  4. SSE
  5. MMX
  6. SSE3
Supports dynamic frequency scaling Yes

bus

Clock speed 2,000 MHz

details

Threads 2 threads
L2 cache 2 MB
L2 cache per core 1 MB/core
L3 cache 0 MB
L3 cache per core 0 MB/core
Manufacture process 45 nm
Max CPUs 1
Operating temperature Unknown - 72°C

power consumption

TDP 45W
Annual home energy cost 10.84 $/year
Annual commercial energy cost 39.42 $/year
Typical power consumption 36.56W

memory controller

Memory controller Built-in
Memory type DDR3
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