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Topic: Crossfire rig way to hot (Read 1392 times)

full member
Activity: 195
Merit: 100
July 11, 2013, 02:34:43 PM
#27
Yeah got the sapphire card working great in top slot, way more quiet and cooler, running at 525kh/s avg with I = 17 (seen it go up to 605) temps between 72c night - 76 day Smiley.

Been mining for over 12 hours, no issues with the PSU so far, I'll try and put the XFX card in later and I'll mess around with it, if the PSU keeps failing I'll just take it out and accept my PSU cant handle 2 GPU's lol.

Thanks for everything mate.

Fantastic! Sounds like things have stabalized Smiley I'm glad I could help and envious of your video card hash rate haha. Good luck and you're welcome!
newbie
Activity: 14
Merit: 0
July 11, 2013, 12:37:54 PM
#26
77c I don't think is too hot. I run a 7970 here at 80c with no problems. Additionally I run quad 7990s at 92c and so far had no issues. Keep in mind though, 7990s are dual GPU and naturally put out far more heat, so maybe they are more tolerant.
newbie
Activity: 15
Merit: 0
July 11, 2013, 12:23:18 PM
#25
Is the Sapphire card working in the top slot now that you've got fresh drivers installed?

If it is working in the top slot I'd say throw the XFX into the bottom slot with CF OFF and no CF bridge connecting them. You don't have to use it or stress it, I just wonder what it will look like now since previously you said "when I tried it in the bottom slot windows acted as if I had no drivers"

If it is recognized correctly I'd then probably consider seeing if it can hash. You certainly don't have to and I fully understand the worries about trashing your HDD from all these hard power cycles but like I said I like to tinker Smiley

Even if you want to sell the XFX card I think you should test it solo to see if the temps have leveled out at all. If only so you can have full disclosure during the sale/trade. Good luck!

Yeah got the sapphire card working great in top slot, way more quiet and cooler, running at 525kh/s avg with I = 17 (seen it go up to 605) temps between 72c night - 76 day Smiley.

Been mining for over 12 hours, no issues with the PSU so far, I'll try and put the XFX card in later and I'll mess around with it, if the PSU keeps failing I'll just take it out and accept my PSU cant handle 2 GPU's lol.

Thanks for everything mate.
full member
Activity: 195
Merit: 100
July 11, 2013, 07:40:29 AM
#24
Is the Sapphire card working in the top slot now that you've got fresh drivers installed?

If it is working in the top slot I'd say throw the XFX into the bottom slot with CF OFF and no CF bridge connecting them. You don't have to use it or stress it, I just wonder what it will look like now since previously you said "when I tried it in the bottom slot windows acted as if I had no drivers"

If it is recognized correctly I'd then probably consider seeing if it can hash. You certainly don't have to and I fully understand the worries about trashing your HDD from all these hard power cycles but like I said I like to tinker Smiley

Even if you want to sell the XFX card I think you should test it solo to see if the temps have leveled out at all. If only so you can have full disclosure during the sale/trade. Good luck!
newbie
Activity: 15
Merit: 0
July 10, 2013, 07:23:08 PM
#23
ATI lists 8GB of memory as the requirement for CFing cards. I don't see that having anything to do with the issues or the high temps but it is something worth noting.

I'd still like to know what driver version you're using. There are a few tools out there for driver removal but I can't recommend those and feel a good un-istall/reinstall is safer if you're interested in trying that.

I will fully and freely admit that I'm quite the tinkerer and after un-installing the drivers I would probably put the Sapphire in the top slot and the XFX in the lower slot with CF off and no bridge on the cards internally and see what they looked like after reinstalling the latest drivers. Probably a lot of unnecessary tinkering that may or may not change anything but like I said I enjoy trying things and that is where my mind takes me given what you've described.

Thanks for the advice mate, managed to get the sapphire working, uninstalled drivers and then went removing all files and then deleted all AMD/ATI folders in the registry and now seems to work ok after re-installing. running driver 12.1 and CCC 13.4.

That's interesting about the 8gb, did a bit of research and most people seem to be ok even with 4gb of ram with xfire.

Now that the sapphire card is working would there be any point in putting the XFX back in the second slot? if the power keeps going out I could corrupt my HDD.
Seems strange my PSU handles 1 GPU great never had problems before.
full member
Activity: 195
Merit: 100
July 10, 2013, 06:20:03 PM
#22
ATI lists 8GB of memory as the requirement for CFing cards. I don't see that having anything to do with the issues or the high temps but it is something worth noting.

I'd still like to know what driver version you're using. There are a few tools out there for driver removal but I can't recommend those and feel a good un-istall/reinstall is safer if you're interested in trying that.

I will fully and freely admit that I'm quite the tinkerer and after un-installing the drivers I would probably put the Sapphire in the top slot and the XFX in the lower slot with CF off and no bridge on the cards internally and see what they looked like after reinstalling the latest drivers. Probably a lot of unnecessary tinkering that may or may not change anything but like I said I enjoy trying things and that is where my mind takes me given what you've described.
newbie
Activity: 15
Merit: 0
July 10, 2013, 04:14:04 PM
#21
Your PSU is listed as providing 20A per 12V Rail.

I've got a 700W PSU that only has 2x 12V plugs but each pushes 25A. I've never tried to run multiple cards on it though. I'm unable to find specific amp requirements on either card but most PSUs with 4+ 12V rails seem to only offer 20A per or less. I found a Zalman 850W that sports 25A per 12V but it costs over $250...

I'd be inclined to say you've got enough amperage unless the PSU is on its way out. What version of the ATI drivers are you running? I'm not convinced drivers are at fault here but now I'm even more curious Smiley

This is probably totally unrelated but how much RAM does your PC have?

Thanks for all the help mate, got 6bg (2x2 and 1x1)of OCZ reaper DDR2 1066 running @ 800 (mobo does not like 1066 if there are 4 sticks in).

I agree about the PSU, it should be supplying 20A according to specs. Weird thing is my rig seems stable with 1 card, been mining for around 20 mins and still going.

newbie
Activity: 22
Merit: 0
July 10, 2013, 03:21:04 PM
#20
Try dumping ice over your rig
full member
Activity: 195
Merit: 100
July 10, 2013, 03:13:23 PM
#19
Your PSU is listed as providing 20A per 12V Rail.

I've got a 700W PSU that only has 2x 12V plugs but each pushes 25A. I've never tried to run multiple cards on it though. I'm unable to find specific amp requirements on either card but most PSUs with 4+ 12V rails seem to only offer 20A per or less. I found a Zalman 850W that sports 25A per 12V but it costs over $250...

I'd be inclined to say you've got enough amperage unless the PSU is on its way out. What version of the ATI drivers are you running? I'm not convinced drivers are at fault here but now I'm even more curious Smiley

This is probably totally unrelated but how much RAM does your PC have?
sr. member
Activity: 406
Merit: 250
July 10, 2013, 01:16:46 PM
#18
Could it be that the PSU cant supply enough amps on the 12v rail?

That could be a possibility.  I think someone mentioned that in the thread I started when I first joined with my PSU issue.

I'm too stupid to know what the hell that means though. lol

newbie
Activity: 15
Merit: 0
July 10, 2013, 12:55:41 PM
#17

Yeah, 850W should be enough... try undervolting them and see if that fixes it?

Sounds like a PSU issue though.  The temps on that card are not ideal, but it shouldn't be causing a shut-down...

AFAIK, you should see the GPU go "SICK" or "DEAD" in CGMiner before it would ever cause a complete PC shut-down.


I think the XFX card is running at 0.9 or something already. They should be able to run stock though right?
If my PSU is failing why has it never done this before with 1 card?
Could it be that the PSU cant supply enough amps on the 12v rail?

Have not seen cgminer do that so I think it is PSU. Either way the XFX DD stock cooler sucks anyway lol.

The CPU thermal threshold powering down isn't a shutdown, it just turns the PC off. I should have been more specific  Smiley It doesn't sound like that is what's going on here though...

In your first post you mentioned the Sapphire card won't work correctly in the top slot and now you've said the XFX card won't work in the lower slot. What driver version are you using? And are you getting the drivers from Sapphire/XFX or are you just running the ATI ones and CCC? This very well could all be PSU related but I feel like there are too many other funky things going on for me to give up on troubleshooting!

Yeah, CPU and mobo temps seem real good to be honest. Dont think it's that.

It works, but it windows acts as if there is no driver, already have the CCC and ATI drivers in there, works fine on the XFX card, do I need to re-install them or something? If I could get that card to work in the first slot that would be good, the cooler on the sapphire will be good enough to get 450kh/s at least.

Think I might sell the XFX card.
full member
Activity: 195
Merit: 100
July 10, 2013, 12:09:21 PM
#16
The XFX card is in the top slot, when I tried it in the bottom slot windows acted as if I had no drivers. even when it was the only GPU in there I thought it used to run hot, My case is medium size I guess, the CPU temps are fine 35c-40c, I would not think my case would be an issue, it does not have great air flow, but with the side case off its alright. It does not really "shutdown" it more just turns off instantly. I think it is a PSU issue to be honest.

The CPU thermal threshold powering down isn't a shutdown, it just turns the PC off. I should have been more specific  Smiley It doesn't sound like that is what's going on here though...

In your first post you mentioned the Sapphire card won't work correctly in the top slot and now you've said the XFX card won't work in the lower slot. What driver version are you using? And are you getting the drivers from Sapphire/XFX or are you just running the ATI ones and CCC? This very well could all be PSU related but I feel like there are too many other funky things going on for me to give up on troubleshooting!
sr. member
Activity: 406
Merit: 250
July 10, 2013, 12:00:30 PM
#15
Not really, 1 DVD drive and 1 HDD. One thing I have noticed is the blue LED lights on PSU fan have gone much dimmer since I plugged in new GPU. I dont think the PSU is failing it seems like it does not have enough power but it's 850watts so it should?? a little confused by it all to be honest lol.

Yeah, 850W should be enough... try undervolting them and see if that fixes it?

Sounds like a PSU issue though.  The temps on that card are not ideal, but it shouldn't be causing a shut-down...

AFAIK, you should see the GPU go "SICK" or "DEAD" in CGMiner before it would ever cause a complete PC shut-down.


newbie
Activity: 15
Merit: 0
July 10, 2013, 11:52:50 AM
#14
I would imagine 850W is enough for a two GPU set-up... if you have a spare 500W+ laying around, hook one of the cards up to it, and use a paper-clip to turn the PSU on without it being plugged into the mobo [pictured below]... if that fixes the problem then it might be a PSU issue.

Sounds exactly like my issue when I was trying to run my cards on a 630W Antec PSU.  I know the 7950s require more power than my cards, but I was pretty sure someone told me they were running 3 7950s on an 850W...

Do you have a lot of other drives plugged in?  CD/DVD/multiple HDD?

Not really, 1 DVD drive and 1 HDD. One thing I have noticed is the blue LED lights on PSU fan have gone much dimmer since I plugged in new GPU. I dont think the PSU is failing it seems like it does not have enough power but it's 850watts so it should?? a little confused by it all to be honest lol.

Dont have another PSU I could try, the 850watt I got a few years ago has been the only one I've ever needed.

Put Some Water On That Thing!

Mate if I had the money all of my rig would be under water cooling.  Wink
newbie
Activity: 15
Merit: 0
July 10, 2013, 11:47:54 AM
#13
Jumping in here to add some info and ask some questions and hopefully help -

What size case are you using, what does the airflow look like inside, and which card is in the top slot? I've never seen GPU temps cause Windows to shutdown but I have to wonder if they aren't raising the ambient temperature to the point where the processor is hitting a thermal threshold and powering down to prevent damage?

I realize this is only my expirience but I was fooling around with the manual fan control in Afterburner and left it at 20% accidentally while mining...

By the time I got back to the computer the temp had spiked to 102C but the computer was still on and still trying to mine away! I used it as an excuse to take the cooler off and reapply the thermal paste but the original stuff was actually still in excellent condition and thankfully I didn't fry the card or any other components. I'm using a 7870 that I haven't messed with OCing until the new thermal paste sets but I can typically hit right around 400 on it alone.

The XFX card is in the top slot, when I tried it in the bottom slot windows acted as if I had no drivers. even when it was the only GPU in there I thought it used to run hot, My case is medium size I guess, the CPU temps are fine 35c-40c, I would not think my case would be an issue, it does not have great air flow, but with the side case off its alright. It does not really "shutdown" it more just turns off instantly. I think it is a PSU issue to be honest.
newbie
Activity: 28
Merit: 0
July 10, 2013, 11:45:18 AM
#12
Put Some Water On That Thing!
sr. member
Activity: 406
Merit: 250
July 10, 2013, 11:33:05 AM
#11
I would imagine 850W is enough for a two GPU set-up... if you have a spare 500W+ laying around, hook one of the cards up to it, and use a paper-clip to turn the PSU on without it being plugged into the mobo [pictured below]... if that fixes the problem then it might be a PSU issue.

Sounds exactly like my issue when I was trying to run my cards on a 630W Antec PSU.  I know the 7950s require more power than my cards, but I was pretty sure someone told me they were running 3 7950s on an 850W...

Do you have a lot of other drives plugged in?  CD/DVD/multiple HDD?



full member
Activity: 195
Merit: 100
July 10, 2013, 11:29:34 AM
#10
Jumping in here to add some info and ask some questions and hopefully help -

What size case are you using, what does the airflow look like inside, and which card is in the top slot? I've never seen GPU temps cause Windows to shutdown but I have to wonder if they aren't raising the ambient temperature to the point where the processor is hitting a thermal threshold and powering down to prevent damage?

I realize this is only my expirience but I was fooling around with the manual fan control in Afterburner and left it at 20% accidentally while mining...

By the time I got back to the computer the temp had spiked to 102C but the computer was still on and still trying to mine away! I used it as an excuse to take the cooler off and reapply the thermal paste but the original stuff was actually still in excellent condition and thankfully I didn't fry the card or any other components. I'm using a 7870 that I haven't messed with OCing until the new thermal paste sets but I can typically hit right around 400 on it alone.
newbie
Activity: 15
Merit: 0
July 10, 2013, 11:27:19 AM
#9

Not sure what is going on with your PC shutting down.  My cards will overheat sometimes but then CGWatcher just turns the intensity down and it recovers.  The only problem I ever had with mining and my PC shutting down was when I was trying to use a 630W PSU.  Once I upgraded to the 850W everything was fine.

Crossfire does not give any benefits to mining, so there is no reason for it to be on, and most see improved performance with it off...

Not sure what is going on with your rig though, mate.  The PC shouldn't be shutting down at those temps... most cards run fine at 85-90ºC it is just not recommended to mine 24/7 at those temps unless you are like me and trying to blow up a card lol

You could try another brand, but you might not have any better results.  Try sticking a box fan right by your rig and see if that helps keep the temp down.

Yeah my PC just shutdown again and temps were below 80c, could it be a sign of a failing PSU or not enough power? got 850watt OCZ gamextream. Has never happend before with just 1 GPU seems to me like not enough power more than failing PSU.
Thinking about just taking the XFX card out and using the sapphire, do I need to reinstall any drivers?

Was able to get max 510kh/s with reasonable temps both cards under 80c ran for like 5 mins and PC just turned off.
sr. member
Activity: 406
Merit: 250
July 10, 2013, 11:20:07 AM
#8
Wait... your PC is shutting down because of the heat?  How hot does it get before it shuts down?

I did some test runs on my PC to see how hot I could get my 5850 before it would get "SICK" in CGMiner, and it seems like I can push it to about 95ºC before it turns off.... however, my PC never shuts down.

Oh... lol... turn crossfire off!  Hope that helps.  You don't want crossfire on if you are mining!



My friend set my pc up, and he put crossfire on it, but the cards run individually when mining.  Should I still remove it?

You don't have to, but if you do, then you might see some improvement in mining!

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