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-   -   [270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs (http://www.nvnews.net/vbulletin/showthread.php?t=159167)

artem 01-29-11 02:37 AM

[270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs
 
Since 260.12.19 (a clear regression) overclocking on 8XXX class GPUs is broken. 270.18 beta drivers also have this problem.

Downclocking works well:
Code:

$ nvclock -m 200 -n 200
Requested memory clock:        200.000 MHz
Requested core clock:          200.000 MHz

Adjusted Coolbits 2D/3D clocks on a nVidia Geforce 8800GT
Memory clock:  200.000 MHz
GPU clock:      200.000 MHz

Now let's try to revert to the original clocks (650/900):
Code:

nvclock -r
Your nVidia Geforce 8800GT has been restored to its original clocks
Memory clock:  950.000 MHz
GPU clock:      200.000 MHz

NVIDIA driver doesn't restore GPU clock. However if I try to restore GPU clocks incrementally, it works:

Code:

[artem@localhost tmp]$ nvclock -n 300
Requested core clock:          300.000 MHz

Adjusted Coolbits 2D/3D clocks on a nVidia Geforce 8800GT
Memory clock:  950.000 MHz
GPU clock:      200.000 MHz

[artem@localhost tmp]$ nvclock -n 250
Requested core clock:          250.000 MHz

Adjusted Coolbits 2D/3D clocks on a nVidia Geforce 8800GT
Memory clock:  950.000 MHz
GPU clock:      250.000 MHz

[artem@localhost tmp]$ nvclock -n 330
Requested core clock:          330.000 MHz

Adjusted Coolbits 2D/3D clocks on a nVidia Geforce 8800GT
Memory clock:  950.000 MHz
GPU clock:      250.000 MHz

[artem@localhost tmp]$ nvclock -n 300
Requested core clock:          300.000 MHz

Adjusted Coolbits 2D/3D clocks on a nVidia Geforce 8800GT
Memory clock:  950.000 MHz
GPU clock:      300.000 MHz

[artem@localhost tmp]$ nvclock -n 400
Requested core clock:          400.000 MHz

Adjusted Coolbits 2D/3D clocks on a nVidia Geforce 8800GT
Memory clock:  950.000 MHz
GPU clock:      300.000 MHz

[artem@localhost tmp]$ nvclock -n 350
Requested core clock:          350.000 MHz

Adjusted Coolbits 2D/3D clocks on a nVidia Geforce 8800GT
Memory clock:  950.000 MHz
GPU clock:      350.000 MHz

[artem@localhost tmp]$ nvclock -n 400
Requested core clock:          400.000 MHz

Adjusted Coolbits 2D/3D clocks on a nVidia Geforce 8800GT
Memory clock:  950.000 MHz
GPU clock:      400.000 MHz

[artem@localhost tmp]$ nvclock -n 500
Requested core clock:          500.000 MHz

Adjusted Coolbits 2D/3D clocks on a nVidia Geforce 8800GT
Memory clock:  950.000 MHz
GPU clock:      500.000 MHz

[artem@localhost tmp]$ nvclock -n 650
Requested core clock:          650.000 MHz

Adjusted Coolbits 2D/3D clocks on a nVidia Geforce 8800GT
Memory clock:  950.000 MHz
GPU clock:      500.000 MHz

[artem@localhost tmp]$ nvclock -n 600
Requested core clock:          600.000 MHz

Adjusted Coolbits 2D/3D clocks on a nVidia Geforce 8800GT
Memory clock:  950.000 MHz
GPU clock:      600.000 MHz

[artem@localhost tmp]$ nvclock -n 650
Requested core clock:          650.000 MHz

Adjusted Coolbits 2D/3D clocks on a nVidia Geforce 8800GT
Memory clock:  950.000 MHz
GPU clock:      650.000 MHz

Aaron, zander, please reopen the internal ticket for this issue.

artem 01-31-11 12:16 PM

Re: [270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs
 
I'm gonna be persistent.

artem 02-02-11 04:46 AM

Re: [270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs
 
And mildly annoying.

Licaon 02-02-11 09:13 AM

Re: [270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs
 
Quote:

Originally Posted by artem (Post 2386333)
And mildly annoying.

shouldn't you be actually annoying the nvclock devs ?
wasn't nvclock dead since the dev is working on another thing ?

ShiningArcanine 02-02-11 10:14 AM

Re: [270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs
 
Considering that nvclock is a third party tool, I think you probably should demonstrate that this does not work with nvidia-settings before you complain here.

jeisom 02-02-11 10:16 AM

Re: [270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs
 
NVclock uses coolbits, the same that nvidia-setting uses, for overclocking on newer cards

artem 02-03-11 01:33 PM

Re: [270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs
 
thanks, jeisom, for answering Licaon and ShiningArcanine concerns.

Yes, this bug also holds true when using the official `nvidia-settings` utility.

drhirsch 02-04-11 08:24 AM

Re: [270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs
 
At least you have some down/overclocking ability. I lost mine when I switched out my good ol 8800 and replaced it with a 460, which has, alas, no ability to change clocks at all.

artem 02-04-11 09:08 AM

Re: [270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs
 
drhirsch

Really? Do you at least have different (automatically applied) performance levels?

adamlau 02-04-11 10:25 PM

Re: [270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs
 
I'll join you in being persistent...

adamlau 02-04-11 10:26 PM

Re: [270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs
 
And on being mildly annoying...

adamlau 02-04-11 10:27 PM

Re: [270.18] Overclocking is _still_ broken for 8xxx (probably 9xxx too) class GPUs
 
Until I see some overclocking support for Fermi...


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