TX throttling...VRM's?

[oldestgregg]

I have a decent OC on my TX using no extra volts with it hitting 1400mhz and still under the power limit 100% of the time. I have the EVGA AIO strapped to it and with a corsair sp120 it hits 52c under long load which I'm happy about. Now,its been fine for a couple of weeks but last night after around 3 hours of Crysis 3 it started throttling by 100mhz even though the temp was 52c. I checked and the power limit was suddenly being hit even though this has been fine for quite a while and I had to knock 100mhz off the core to stop it throttling again. Ive just added new memory to my system so I made a less aggressive profile for it to see but havnt had the time to game for another long period to check if its made any difference.

What made me think was the fact I read Nvidia set the VRM's to throttle at a certain temp and was wondering what anyone knows about this?

 

[8 Pack]

You updated your drivers in this time. The newer drivers are even tighter on Overclocking limits.

 

[Rroff]

Can you get VRM temperatures i.e. from GPU-z?

 

[oldestgregg]

You updated your drivers in this time. The newer drivers are even tighter on Overclocking limits.

No mate. Been running the same drivers for a number of weeks and only added the hotfix although even that was 2 weeks ago and its been working fine since then

 

[oldestgregg]

Can you get VRM temperatures i.e. from GPU-z?

Didnt know GPU z did VRM temps? In that case silly me I shall have a check

Edit - where can you see VRM temps?

 

[Rroff]

Depends on what the GPU exposes via I2C, etc. on some GPUs you can see the VRM temps in the sensors tab in GPU-z on others you can't.

 

[oldestgregg]

Ah,they not displayed for me. Might pick up one of those pointy thermometers and see whats up. I turned off the PC last night after it happened and knocked the ram down to 2133mhz then when I turned it back on it ran heaven no problem at 1400mhz under 99% load without doing it. That may or may not be related

 

[Silent_Scone]

TX is a reference PCB and as such has no polling on VRM

 

[Meaker]

I use a modified bios to maintain my 1500/8000 clocks during gaming and avoiding throttle. Short of maxing the stock power slider unless you start down that path there is not much you can do.

 

[oldestgregg]

Think you've misunderstood there a bit Meeker. It was the only time its happened and power limit is fine even again today. it was just after 3 hours and wondered if it was VRM's causing the issue as its stable usually and I've heard they throttle at high temps even though the core was 50c. I agree though I need a mod bios to get higher clocks as I can't add any voltage at all with those clocks on stock voltage

 

[tipes]

Does the Evga AIO cooler cover the VRM section? If not some extra cooling on the VRM would help I imagine - I could be talking bs as I am not familiar with that cooler.