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Phenom 9700, AMD's 1st Quad-Core CPU

Cool'n'Quiet 2.0 In Detail II

The CPU can now change its clock speed and core voltage without influencing either the clock speed of the northbridge or the transfer speed of the Hypertransport 3.0 protocol. AMD calls this technology Dual Dynamic Power Management .

The Processor Power Saving Indicator can inform the voltage regulation unit on the motherboard that less energy is required, allowing some of the voltage regulators to be deactivated. This increases the efficiency of the VRM unit and conserves energy. Of course, the motherboard has to support this feature.

If all four processor cores are simultaneously idle, the new C1E power state function becomes active. It deactivates the Hypertransport link, puts the system memory into a low-power state and shuts down the CPU's internal clock signal generators, leading to further power savings.

If the cores are idle when the graphics card requests data from the system memory, the Phenom can now wake the memory interface from its power-saving mode, send the requested data and go "back to sleep" without having to wake any of the cores from their idle sleep-state.

Overall, we can say that AMD has revamped Cool'n'Quiet to such a degree in version 2.0 as to make the previous version practically seem like a power hog. Since the Core 2 CPUs do not have the memory controller on-die, Intel does not have similar power-saving options at its disposal. Thus, AMD is a huge step ahead of its rival in this department.

Tom's Hardware News Team
Tom's Hardware News Team

Tom's Hardware's dedicated news crew consists of both freelancers and staff with decades of experience reporting on the latest developments in CPUs, GPUs, super computing, Raspberry Pis and more.

  • spearhead
    good review but you should have had included more result of the overclocked phenom. i just want to know how much juce i you can push out of it for me it is a must it beats the 6400+ otherwise its not worth purchasing in my opinion, it just has to beat its older generation when its running at same clocks.that is why amd has to work on its clock speed and cache. hopefully deneb will be out soon. i would also realy appriciate it to see some review about the phenom 9850 black edition compared against both the 6000+ 6400+ and q6600 and q9300 and maybe some e8xxx model. with overclocked results. pushed it to the maximum. would be realy cool hehe :)
    Reply
  • haifen
    The SB700 does indeed support at least one PATA port as my motherboard has an IDE connector and I can use it with the ATIIXP PATA driver.
    Reply