CpuIdle Extreme v7.5.0.10

[skyman]

CpuIdle Extreme v7.5.0.10 (10.06.2007 - Vista Ready)

CPU cooling will help you achieve these things:

:: decrease CPU temperature

:: enhance stability

:: enable overclocking (overclocking increases temperature- CpuIdle gives additional headroom)

:: increase CPU life (a decrease by 10°C doubles the life span)

:: cut power consumption

Unlike normal power management provided by the operating system, CpuIdle is always active. CpuIdle is even working even when you're actively using your computer!

CpuIdle created the very idea of software CPU cooling:

CpuIdle was the first power management and CPU cooling software providing online-cooling during normal PC activity. When you first start CpuIdle on your PC, you'll see and almost immediate temperature drop Temperature curve after starting CpuIdle

CpuIdle uses several mechanisms to keep your CPU cool:

-- shutdown CPU when not used (online cooling)

-- optimize CPU for maximum cooling effect

-- optimize chipset for maximum cooling effect (supported chipsets only)

CpuIdle Features

.: keeps CPU cool

.: enhance system stability

.: convenient user interface (multilingual)

.: display CPU idle and cooling times

.: integration with MotherBoard Monitor:

--- enables CpuIdle to read MBM temperature sensors

--- take action on critical temperatures (increase cooling, shutdown system)

.: generic support for all CPUs and chipsets

.: support for all current CPU types (see list of supported CPUs)

.: special chipset optimization support (see list of supported chipsets)

.: support for multiprocessor systems

.: future upgrades are included

Even if your CPU is not mentioned in this list, or not recognized by CpuIdle, it will still be supported out of the box. CpuIdle will issue the HLT statement to shutdown the CPU regardless if the CPU could be identified or not.

Also chipset optimization will be performed on the chipset detected, regardless of CPU type.

CpuIdle Extreme Update Released (10.06.2007)

:: CpuIdle test version for Windows Vista is now available. Please download the test version here. This version contains the following fixes:

-- added support for Windows Vista

-- added the long-awaited support for SpeedFan CPU temparature monitoring

-- added support for Intel Core and Core Duo processors

How does CpuIdle work?

-= Why CPUs Produce Heat =-

Due to CMOS technology modern microprocessors are manufactured not only with transistors but also capacitors and resistors. The resistors create heat that must be conducted away from the processor.

-= Classic Cooling Methods =-

Removing the heat from the CPU core is easier with higher temperature gradients. For this reason microprocessors are not only equipped with large heat sinks but also actively cooled with fans or Peltier cooling elements. Higher temperatures worsen parasitic effects like electromigration or oxide breakdown that might eventually lead to failure. A temperature increase of 10 degrees centigrade means a halfed lifetime for chips. This holds true for the microprocessor and for the voltage regulation module (VRM) that supplies the I/O and core voltages. Many outdated or cheap motherboard designs employ passive VRMs that generate additional heat in the PC.

-= The CpuIdle Approach =-

Under normal circumstances the CPU isn't always active but spends much time waiting for the keyboard, harddisk or CD-ROM. What would be more logical than to turn off the CPU for that period? That's exactly what the HLT machine instruction (Opcode F4) does. Whenever the CPU encounters a HLT instruction the clock is halted and the CPU enters suspend mode until an interrupt, NMI, or reset happens. With the advent of power saving microprocessors like the Cyrix Cx486S the HLT instruction elicits an additional benefit. When "Suspend on HLT" is enabled in the configuration register the processor not only stops on HLT but also enters the power saving suspend mode.

-= Why Doesn't Windows Do That? =-

Modern operating systems like Linux execute the HLT instruction in an idle priority thread. This thread is always executed when the CPU is otherwise idle. No additional execution time for HLTing is needed, the CPU will not run slower.

While other operating systems like Linux always used this mechanism, Windows only learned it with NT. But even with NT and following versions it is only enabled when the BIOS and ACPI implementation is recognized by the OS.

-= The Chipset Part =-

With modern chipsets like VIA KX or SiS 7x5 an additional variable enters the equation. These chipsets need to be specifically programmed to allow the CPU entering the HLT state. Windows itself does not perform this programming (chipset optimization in CpuIdle), the BIOS must handle it- which many, even modern, BIOS implementations don't do.

http://rapidshare.com/files/40287221/CpuIdle.Extreme.v7.5.0.10.rar[/CODE]