AMD's Athlon 64 4000+ processor doesn't really
bring anything new to the table in terms of features. Like previous members of
the socket 939 Athlon 64/FX family, it supports two of AMD's showcase
technologies: Cool N' Quiet and Enhanced Virus Protection.
Quiet is a noise and power saving technology which allows the CPU to
dynamically throttle its speed along with a thermally controlled heatsink fan.
These adjustments are made based on the current CPU load.
Protection is a new technology unique to the Athlon 64 CPU. It is
designed to halt certain virus and exploit attacks as they occur. EVP works
hand-in-hand with Microsoft's DEP (Data Execution Prevention) code introduced in Service Pack 2 for Windows XP. When enabled (by using a
compatible processor like the Athlon 64 4000+) the operating system watches for
certain anomalies that often signify a virus or exploit attack, like code being
executed in memory spaces where program code does not belong. In this way,
buffer overflow attacks which overload a legitimate memory space allowing
foreign code to be run in unprotected memory location, will be stopped short as
soon as they occur.
Apart from the above
technologies, the AMD Athlon 64 4000+ also supports the standard Athlon 64
feature list including SSE2, a 1000MHz (up and down stream) Hypertransport link
to motherboard, integrated dual channel memory controller, 8 extra 64-bit
Overclocking the Athlon64
Using MSI's K8T Neo2 motherboard (VIA K8T800 chipset) we were able
the Athlon64 4000+ up to a decent 2.7GHz, and maintain full stability. To
do this, we had to enable the board's 6:5 memory divider and raise the CPU
voltage to 1.7V. Next up, the benchmarks you have been waiting for!