# Can't change memory clock on the second GPU

**URL:** <https://forums.developer.nvidia.com/t/cant-change-memory-clock-on-the-second-gpu/214859>\
**Category:** CUDA Setup and Installation\
**Tags:** linux\
**Created:** [May 18, 2022, 6:03pm UTC](https://forums.developer.nvidia.com/t/cant-change-memory-clock-on-the-second-gpu/214859 "2022-05-18T18:03:42Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![linux3](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@linux3](https://forums.developer.nvidia.com/u/linux3)\
**Post date:** [May 18, 2022, 6:03pm UTC](https://forums.developer.nvidia.com/t/cant-change-memory-clock-on-the-second-gpu/214859/1 "2022-05-18T18:03:42Z")

</div>

I use Fedora 35 with Nvidia driver and cuda v510.062 with 2x 1660Ti GPUs which are recognized, and working well.  
I can modify power limit for both OK, I can modify Core clock for both with no problem via nvidia-smi  
so  
`nvidia-smi -lgc 1200`  
I see nvidia-smi -lmc 7600 (is not supported)  
so I tried with nvidia-settings

```auto
nvidia-settings --verbose=all -c :0 -a [gpu:1]/GPUGraphicsClockOffsetAllPerformanceLevels=-100

WARNING: Failed to match any targets for target specification 'gpu:2', specified in assignment '[gpu:2]/GPUMemoryTransferRateOffset[3]=2200'

```

it works for gpu:0

```auto
nvidia-settings --verbose=all -a '[gpu:0]/GPUMemoryTransferRateOffset[3]=2200'

Unhandled integer attribute GPUMemoryTransferRateOffset (410) of GPU (0) (set to 2200)
  Attribute 'GPUMemoryTransferRateOffset' (s5:0[gpu:0]) assigned value 2200.

```

I tried with no luck  
nvidia-settings -c :0 -a ‘[gpu:1]/GPUMemoryTransferRateOffset[1]=2200’  
nvidia-settings -c :0 -a ‘[gpu:1]/GPUMemoryTransferRateOffset[2]=2200’  
nvidia-settings -c :0 -a ‘[gpu:1]/GPUMemoryTransferRateOffset[3]=2200’  
nvidia-settings -c :0 -a ‘[gpu:1]/GPUMemoryTransferRateOffset[4]=2200’

Any clues?  
Thanks