Who thinks they can bypass them?

If it helps any...... it does not apply to all nVidia cards. I just benched GT216 silicon at 1050MHz with 310.xx drivers

What kind of clock limits?

999MHz on the gpu.

Even with software like inspector?

Yup. It's a problem/feature for Fermi cards. I don't know about Kepler.

So NV400 series.

 

Documented issue?

It's part of the Green Light program, I think.

seems to be a driver bug.

 

when i set clocks higher than 1000 mhz, it will show no higher than 1000 mhz realtime monitoring, but clocks in gpuz will go up. the card also crashes around 1100 mhz which means the clocks get applied.

 

independent setting of shader clock doesn't work

 

I'm also having trouble breaking the barrier of 1004mhz with drivers 3xx

 

only tested the gtx 560ti and you. both models had problems to pass 1004mhz. I even always runs at 1100MHz by setting 1004mhz even ln2.

 

sorry my bad english. using google translator.

 

Edited December 24, 201212 yr by silva_br

seems to be a driver bug.

 

when i set clocks higher than 1000 mhz, it will show no higher than 1000 mhz realtime monitoring, but clocks in gpuz will go up. the card also crashes around 1100 mhz which means the clocks get applied.

 

independent setting of shader clock doesn't work

 

http://gpuz.techpowerup.com/12/12/24/dbe.png

 

Score goes up?

Here's my testing. Same description as W1zz, but no change in score.

 

 

 

 

I will load 28x series drivers and re-bench when I can*. Don't know if 1075 will run though, previous testing got me 1050MHz max.

 

*I'm also cooking & eating Christmas dinner tonight

Edited December 24, 201212 yr by K404

I'm WELL impressed with my multi-tasking.....also quite happy at getting 1075MHz to run

 

 

 

 

Well.... 310 drivers are more efficient- they are like having another 50MHz on the core.... then there is the boost from LOD.

https://forums.geforce.com/default/topic/537552/overclocking/oc-limitation-since-314-07-whql/

 

Please can someone do some driver testing and add some info to comfirm or deny this?

 

***maybe*** nVidia aren't finished limiting MHz for their cards.

I had a similar problem with GTX 560 Ti and new drivers. I can set more than 1000, but MSI AB monitorings shows, that GPU Clock not higher than 1000 MHz anyway.

Thankyou for the extra info

Same here, tested with a few cards.

Can someone compile all the data in one easy to read chart?

 

I think this is news worthy

I can Confirm you guys finding here too ! +1 it happened to me a few months ago, running GTX 460 clocks are locked to 999Mhz core even thought it can run 1060Mhz on older drivers, with drivers newer than 301.xx overclock is locked and limited by this new drivers to 999Mhz , also tested a few more cards as stated by CN (GT 430 , GT520 etc....) they are locked too. I think this limit impose by the NVidia drivers is hindering the performance for a lot of people

Edited April 28, 201312 yr by chispy

Glad i am not the only one, the other day I thought I was crazy when I wasnt able to overclock any cards no matter what.

Does anyone has contacts in Nvidia to ask about it? Cause if it's purpose action, it's not good for community.

I just sent an email asking if it's a bug or a "feature", now waiting.

This is old, but bad, news. I have had no luck what so ever with new drivers above 1GHz gpu (999) on GTX560-448. I bet many people will swear about this in MOA B-Class

Oh, FINALLY My find is being taken seriously.

 

It is this simple:

 

 

If someone uses FERMI SILICON with nVidia 300-series drivers, thery are capped at 999MHz core.

 

I say Fermi SILICON because the GT630 uses GF108. Because it is 6-series, it needs 300-series drivers- so the MHz cap is there.

 

OLDER cards- GT2xx are NOT affected. It is Fermi ONLY.

 

There is your newspost

hehe, saw it only last week when testing some GTX 5xx cards