GTX580 一洗頹風，單卡單GPU皇者，香港首個開箱測試
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eLove
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GTX580功耗的改善，應該是下圖所示的功能加上bios與driver配合達成
軟+硬的方式保持GTX580的功耗在一定的程度內
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Beginning with the GTX 580 we are told that NVIDIA will include dedicated hardware circuitry on the graphics card that performs real-time monitoring of current and voltage on each 12V rail (6-pin, 8-pin and the PCI Express slot itself). Code in the video card driver then monitors these power levels and then will dynamically adjust performance in certain stress applications such as Furmark or OCCT. This will keep the board from having excessive power draw. NVIDIA will have to now keep drivers updated and track how certain games or applications stress the GPU.
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原文與圖片來源：legitreviews
軟+硬的方式保持GTX580的功耗在一定的程度內
-----
Beginning with the GTX 580 we are told that NVIDIA will include dedicated hardware circuitry on the graphics card that performs real-time monitoring of current and voltage on each 12V rail (6-pin, 8-pin and the PCI Express slot itself). Code in the video card driver then monitors these power levels and then will dynamically adjust performance in certain stress applications such as Furmark or OCCT. This will keep the board from having excessive power draw. NVIDIA will have to now keep drivers updated and track how certain games or applications stress the GPU.
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原文與圖片來源：legitreviews
eLove
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guru3d 提到 NV 的合作伙伴可以自行決定是否將這個功能實作在非公版卡上
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The NVIDIA board partners can decide for themselves whether or not to implement this on their own custom boards though all reference boards will have this protection.
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另外，guru3d 有公開 NV 關於這功能的說明
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NVIDIA's latest email on the topic:
Earlier this week we briefed you about a new feature we called “Advanced Power Management”. The below information is intended to clarify. First, here are the correct facts about our new technology:
We have implemented new power monitoring and power capping features on GTX 580 boards. Similar to our thermal protection mechanisms that protect the GPU and system from excessive heat generation, the new power monitoring and capping features help protect the graphics card and system from issues caused by excessive power draw.
* Dedicated hardware circuitry on the GTX 580 graphics card performs real-time monitoring of current and voltage on each 12V rail (6-pin, 8-pin, and PCI-Express).
* The graphics driver monitors the power levels and will dynamically adjust performance in certain stress applications such as Furmark and OCCT if power levels exceed the card’s spec.
* Power monitoring adjusts performance only if power specs are exceeded AND if the application is one of the stress apps we have defined in our driver to monitor such as Furmark and OCCT.
* So far we have not seen any real world games that are affected by power monitoring or need power throttling to stay within spec.
* We restrict power monitoring only to stress apps, because we don’t want to limit customers who want to overclock games, and we believe the stress apps are the key apps where the graphics card can benefit from additional protection mechanisms.
* We will enable power monitoring for older Furmark versions in future drivers. The 262.99 driver only identifies Furmark version 1.8. If other thermal stress apps are discovered, they will be added to the protection mechanism from time to time with driver updates.
* We do not provide any end user ability to turn off power capping today.
* The power limits for GTX 580 are set close to PCI Express specs for each 12V rail.
* In this initial implementation, when power capping becomes active, clocks inside the chip are reduced by 50%. Many 3rd party tools have not yet been updated to show this fact, but we suspect updates will be coming to make the internal clock reductions more visible.
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原文來源：guru3d
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The NVIDIA board partners can decide for themselves whether or not to implement this on their own custom boards though all reference boards will have this protection.
-----
另外，guru3d 有公開 NV 關於這功能的說明
-----
NVIDIA's latest email on the topic:
Earlier this week we briefed you about a new feature we called “Advanced Power Management”. The below information is intended to clarify. First, here are the correct facts about our new technology:
We have implemented new power monitoring and power capping features on GTX 580 boards. Similar to our thermal protection mechanisms that protect the GPU and system from excessive heat generation, the new power monitoring and capping features help protect the graphics card and system from issues caused by excessive power draw.
* Dedicated hardware circuitry on the GTX 580 graphics card performs real-time monitoring of current and voltage on each 12V rail (6-pin, 8-pin, and PCI-Express).
* The graphics driver monitors the power levels and will dynamically adjust performance in certain stress applications such as Furmark and OCCT if power levels exceed the card’s spec.
* Power monitoring adjusts performance only if power specs are exceeded AND if the application is one of the stress apps we have defined in our driver to monitor such as Furmark and OCCT.
* So far we have not seen any real world games that are affected by power monitoring or need power throttling to stay within spec.
* We restrict power monitoring only to stress apps, because we don’t want to limit customers who want to overclock games, and we believe the stress apps are the key apps where the graphics card can benefit from additional protection mechanisms.
* We will enable power monitoring for older Furmark versions in future drivers. The 262.99 driver only identifies Furmark version 1.8. If other thermal stress apps are discovered, they will be added to the protection mechanism from time to time with driver updates.
* We do not provide any end user ability to turn off power capping today.
* The power limits for GTX 580 are set close to PCI Express specs for each 12V rail.
* In this initial implementation, when power capping becomes active, clocks inside the chip are reduced by 50%. Many 3rd party tools have not yet been updated to show this fact, but we suspect updates will be coming to make the internal clock reductions more visible.
-----
原文來源：guru3d
gx19921211
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