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ATI 4870x2 Question

post #1 of 8
Thread Starter 
So I found two 4870x2 ati radion cards for a good deal, $50 for both I jumped on it. I realize they're older and DX10 cards.

Anyways, CCC shows the 2nd gpu is idle always, and shows a temp of around 50-55 celcius. There's alot of complaining about this online, but I think I found that its CCC that is messed up and both gpu are actually working.

I discovered something very interesting, I opened Corsair Link. And It comes up with 3 temperatures for that video card.

One temperature is the same as what CCC says is gpu 1, and the other temperature is roughly the same as what CCC says gpu1 temp is.
The 3rd temperature, Which is the temperature that CCC says is the 2nd gpu never goes up in CCC or CorsairLink.

My theory is both gpu are actually working as expected, and its CCC that is improperly detecting the 2nd gpu and reading something else. Not sure why there is 3 temperature readouts picked up with Corsair Link all 3 temps do move independently so its getting the information from somewere.

If not were does this 3rd temperature come from that closely follows the gpu 1 temperature when i graph it in CorsairLink.

Corsair Link labels the 3 temperatures like this:
ATI Radeon HD4870x2 0 Temp 0 0
ATI Radeon HD4870x2 0 Temp 0 1
ATI Radeon HD4870x2 1 Temp

The first two listed follow eachother within a couple degrees. The last one is what CCC says is the 2nd gpu temp and just sits around 50-55 depending on the fan speed.
Edited by Donvanhugenstyn - 2/2/16 at 1:14am
post #2 of 8
I wouldn't trust Corsair Link to accurately monitor those cards. Download hwinfo64 and see what it says.
Also, just for the record, Crossfire is enabled in CCC? What power supply are you using?
Lil' Roy Taylor
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Lil' Roy Taylor
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post #3 of 8
Thread Starter 
Quote:
Originally Posted by p4inkill3r View Post

I wouldn't trust Corsair Link to accurately monitor those cards. Download hwinfo64 and see what it says.
Also, just for the record, Crossfire is enabled in CCC? What power supply are you using?

Since I cannot power both of the 4870x2 with my 750watt power supply I tested one at a time. Yes in CCC I have tried all of the crossfire settings.
I think what is happening is CCC expects the 2nd gpu to be on another card and therefore is not accurately reading the card.

No matter what I do CCC shows the 2nd gpu on the card as idle and running max clock speed. but the temperature never moves. Corsair link brings 3 temperatures, two move almost exactly together with gpu #1 and the 3rd says the same info as what CCC says is gpu #2.

Also, Corsair Link has been accurate every time I pitted it against other programs. I have checked hwinfo vs corsair link, they both display the same information and data every time.

I'll have to remove my gtx970 and put the ati 4870x2 back into my pc to do the testing with hwinfo but I know atleast two of the numbers will match what corsair link says. Not sure if i will get this mystery 3rd number with hwinfo but im curious now to see if it is there. Corsair Link picked it up from somewere.
Bear with me I'll swap video cards out and post in a little bit.

(Also 750watts is enough for 1 4870x2, ati recommends 600watts for 1 and 1000watts for two)
Edited by Donvanhugenstyn - 2/2/16 at 3:01pm
post #4 of 8
You should try doing a full driver wipe too.
Lil' Roy Taylor
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post #5 of 8
Thread Starter 
Quote:
Originally Posted by p4inkill3r View Post

You should try doing a full driver wipe too.

I did wipe the driver off before I removed my gtx970 the first time then removed it then installed the 4870x2 and install it's driver.

Is there a better way than just uninstalling a driver to get rid of it?
post #6 of 8
Thread Starter 
Quote:
Originally Posted by p4inkill3r View Post

I wouldn't trust Corsair Link to accurately monitor those cards. Download hwinfo64 and see what it says.
Also, just for the record, Crossfire is enabled in CCC? What power supply are you using?

Ok so I uninstalled the gtx970 drivers, restarted pc. Then I removed the gtx970, installed the 4870x2, installed its drivers, restarted pc.

Opened hwinfo, and it also shows 3 temperatures for the graphics card. All 3 are in line with corsair link as I suspected.
hwinfo labels them like this: gpu [#0], gpu [#0], gpu [#1] temps 77-78-71
corsair link labels like this: 4870x2 0 temp 0 0, 4870x2 0 temp 0 1, 4870x2 1 temp. and reads 77-77-72

all 3 temps move around but that's roughly their reading.

Look at blue and orange. they are so close and move almost together. One of those is the mystery temperature and I believe is actually the 2nd gpu. That means I have no idea what the green line is but CCC says the green line is the 2nd gpu on the card.


Many people complain that CCC says gpu 2 isn't doing anything I have opened battlefield 3 and 4 and neither can activate what CCC says is gpu 2. I think its a issue with 2 gpu being on the same card maybe?

Started 3D Mark and the temp that's supposedly gpu #2 goes down, while the other two move almost in sync.


Basically I believe its CCC that is wrong, and both gpu are working on the one card. I believe what i observed and shown proves it. Kinda looking for others input and thoughts.
Edited by Donvanhugenstyn - 2/2/16 at 6:11pm
post #7 of 8
Downloading and running DDU is my preferred method; make sure to run it in safe mode.

What version of CCC are you using, and can you download a program that has a GPU usage graph like MSI Afterburner and see what it reports when you run 3dMark?

My first approximation when looking at your screencaps is that the card is being recognized as two GPUs and the third sensor is for the VRMs perhaps.
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Lil' Roy Taylor
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post #8 of 8
Thread Starter 
Quote:
Originally Posted by p4inkill3r View Post

Downloading and running DDU is my preferred method; make sure to run it in safe mode.

What version of CCC are you using, and can you download a program that has a GPU usage graph like MSI Afterburner and see what it reports when you run 3dMark?

My first approximation when looking at your screencaps is that the card is being recognized as two GPUs and the third sensor is for the VRMs perhaps.

For windows 8/8.1 I have tried both the 13.1 and the 13.4 beta drivers. They both act the same, they both show the same information. (When I get a 1000+ watt psu these two cards are going into one computer together running windows 7 which may clear all of this up but I don't know until then)

I'm not sure what you mean by the third temperature being VRM, what temperature are you talking of? Remember, CCC has two temps, and Corsair Link and HWInfo have three. So for me temperature #3 is the mystery temp that only corsair link and hwinfo show. and that #3 mystery temp hovers around gpu#1 temp I don't think VRM would so closely follow gpu temp like that.
CCC shows the lower temp as gpu #2, the green line in my corsair link screenshot. CCC does not show anything else that explains the other temp that corsair link and hwinfo show.

Are you thinking what CCC shows as gpu#2 is actually vrm, green line on corsair link graph. Basically agreeing with my theory that CCC is the issue here.
And honestly I don't see a problem then, even if CCC is not properly detecting the 2nd gpu according to my graph and readouts on corsair link and hwinfo both gpu's are working just fine and are within a couple degrees of eachother. So If that's the case ill ignore what CCC says and assume both gpu are actually working and its CCC with the issue of not showing the 2nd gpu properly.

I don't see any way or reasoning for VRM temps to follow gpu temps so closely as what I observe and shown. So it would make sense that what CCC shows as gpu #2 is actually the VRM for whatever reason and that despite that both gpu are working just fine together.

I see many posts online about others reporting that CCC is showing the 2nd gpu as idle always running max clock while the 1st gpu is working and underclocked while not gaming. Now if gpu 1 is underclocked due to 2d display, gpu 2 would also underclock. therefore fortifying my idea that CCC is the issue here because CCC shows gpu 2 as idle but max clock. while gpu 1 is doing some work and underclocked.
Edited by Donvanhugenstyn - 2/2/16 at 10:43pm
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