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Tom B

Member

Registered: 2014-01-15

Posts: 187

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Nvidia wrong GPU clocks?

I'm not sure quite what the issue here is but the NVIDIA driver is either showing, or using the wrong clock speed. I just bought a 980Ti and have been playing around with it, however the driver shows the following:

==============NVSMI LOG==============

Timestamp                           : Tue Aug  4 16:45:41 2015
Driver Version                      : 352.30

Attached GPUs                       : 1
GPU 0000:02:00.0
    Clocks
        Graphics                    : 1201 MHz
        SM                          : 1201 MHz
        Memory                      : 3645 MHz
    Applications Clocks
        Graphics                    : 1201 MHz
        Memory                      : 3645 MHz
    Default Applications Clocks
        Graphics                    : 1201 MHz
        Memory                      : 3645 MHz
    Max Clocks
        Graphics                    : 1594 MHz
        SM                          : 1594 MHz
        Memory                      : 3645 MHz
    SM Clock Samples
        Duration                    : 1046.82 sec
        Number of Samples           : 100
        Max                         : 1202 MHz
        Min                         : 135 MHz
        Avg                         : 470 MHz
    Memory Clock Samples
        Duration                    : 1046.82 sec
        Number of Samples           : 100
        Max                         : 3645 MHz
        Min                         : 405 MHz
        Avg                         : 1425 MHz
    Clock Policy
        Auto Boost                  : N/A
        Auto Boost Default          : N/A

The max clock is 1594 MHz which is far too high. According to the manufacturer the max (boost) clock should be 1303mhz. Is this a display issue or is it really clocked that high? If so it will be dangerous if it reaches it.

I don't have a windows install to test with at the moment but this seems strange to me. Under load (unigine valley) it shows as reaching 1430mhz. Is this right or is the driver (or kernel?) reporting the wrong speed. Either way, something isn't right somewhere!

Any ideas?