been the marketing name used by AMD for several different budget
desktop CPUs, using several different technologies and CPU
socket formats. The Sempron replaced the AMD Duron processor and
competes against Intel's Celeron series of processors. AMD coined the
name from the Latin semper, which means "always", to suggest the Sempron
is suitable for "daily use, practical, and part of everyday life.
The AMD Sempron
processor lets you enjoy a dynamic Internet experience with
smooth streaming video and audio. The AMD Sempron processor saves
you time and effort; enabling your system to boot and load your
applications quickly. Applications that allow you to communicate
with family, friends and colleagues will run smoothly with the
AMD Sempron processor.
The newest generation of AMD Sempron processor is Sempron AM3,
while socket 754 and AM2 versions of the Sempron processor has been
phasing out the market and is intended for system upgrade only.
The first batch of Sempron CPUs were based on the Athlon XP architecture
using the Thoroughbred or Thorton core. These models were equipped with
the Socket A interface, 256 KiB L2 cache and 166 MHz Front side bus (FSB
333). Thoroughbred cores natively had 256 KiB L2 cache, but Thortons had
512 KiB L2 caches, half of which was disabled and could sometimes be
reactivated with a slight physical modification to the chip. Later, AMD
introduced the Sempron 3000+ CPU, based on the Barton core with 512 KiB
L2 cache. From a hardware and user standpoint, the Socket A Sempron CPUs
were essentially identical to Athlon XP desktop CPUs with a new brand
name. AMD has ceased production of all Socket A Sempron CPUs.
The second generation (Paris/Palermo core) was based on the architecture
of the Socket 754 Athlon 64. Some differences from Athlon 64 processors
include a reduced cache size (either 128 or 256 KiB L2), and the absence
of AMD64 support in earlier models. Apart from these differences, the
Socket 754 Sempron CPUs share most features with the more powerful
Athlon 64, including an integrated (on-die) memory controller,
the HyperTransport link, and AMD's "NX bit" feature.
In the second half of 2005, AMD added 64-bit support (AMD64) to the
Sempron line. Some journalists (but not AMD) often refer to this
revision of chips as "Sempron 64" to distinguish it from the previous
revision. AMD's intent in releasing 64-bit entry-level processors was to
extend the market for 64-bit processors, which at the time of Sempron
64's first release, was a niche market.
In 2006, AMD announced the Socket AM2 and Socket S1 line of Sempron
processors. These are functionally equivalent to the previous
generation, except they have a dual-channelDDR2 SDRAM memory controller
which replaces the single-channel DDR SDRAM version. The TDP of the
standard version remains at 62 W (watts), while the new "Energy
Efficient Small Form Factor" version has a reduced 35 W TDP. The Socket
AM2 version also does not require a minimum voltage of 1.1 volts to
operate, whereas all socket 754 Semprons with Cool'n'Quiet did. In 2006,
AMD was selling both Socket 754 and Socket AM2 Sempron CPUs
concurrently. In the middle of 2007 AMD appears to have dropped the 754
line and is shipping AM2 and S1 Semprons.
AMD Sempron 140 AM3 CPU Microprocessor
Available to buy in 2011