VERY high MEMIO Temp on well cooled 4870

[rodneyhchef]

I've just bought this

http://www.techspot.com/review/120-force3d-radeon-4870/

As you can see it's got an accelero cooler on it so shouldn't get hot at all. Fitted the card, installed drivers etc all fine. Then I thought I'd run a quick 3dmark06 bench to see how it compared to my 4850, It only managed to run for about 15 seconds before VPU recover kicked in.

So I loaded ATITool to test for artifacts, lo and behold I get some straight away with standard clocks! This card is factory o/c'd to 770/950 so I thought i'd drop everything down to ATI default settings and try again. It seems to be running ok now, it passes a 3dmark06 run but looking at the temperatures on GPU-z, the MEMIO temp is alarmingly high- at idle it's around 85°C and under load it can climb as high as 120°C! All the while the "main" GPU temperature never ventures above 60°C. Having a look around on here, it looks as though typical MEMIO temps are around 10-20°C above "main" GPU temp. So mine are way off. Looks like the card is duff, am I right?

[erocker]

Yeah, I'd say your card is no good. It's possible the cooler isn't making good contact, however your other GPU temps are good so I don't think that's it.

[rodneyhchef]

Yeah I had a go at cleaning and re-seating the cooler with some AS5, managed to drop my idle temps a bit but load temps are still no good. Thanks for the suggestion though!

[Binge]

Does that cooler even make contact with the memory? Are there memsinks on the card???

[rodneyhchef]

No, the memory chips have not got any heatsincs on them. In the reviews i've seen on the net this doesn't seem to be a problem

[Fastmix]

Wow
Something is not right, I get 50c with the stock cooler.

[Binge]

Originally Posted by rodneyhchef

No, the memory chips have not got any heatsincs on them. In the reviews i've seen on the net this doesn't seem to be a problem

Since there are no ramsinks, and your temps are that bad, I suggest not only ramsinks but better case airflow.

[mrhuggles]

if memory = hot then its time for ramsinks.

[FR@NK]

Originally Posted by erocker

It's possible the cooler isn't making good contact

This is exactly what is happening. Either you have uneven pressure on the GPU Die or the heatsink base isn't perfectly flat. RMA the card or switch out the heatsink.

Stock heatsink Idle:


Stock heatsink under max load:

[rodneyhchef]

Originally Posted by Binge

Since there are no ramsinks, and your temps are that bad, I suggest not only ramsinks but better case airflow.

Originally Posted by mrhuggles

if memory = hot then its time for ramsinks.

The memory isn't hot, it's the memory controller on the GPU that's getting hot. Case airflow is fine. These temps were recorded WITHOUT the side on!

Originally Posted by Fastmix

Wow
Something is not right, I get 50c with the stock cooler.

Yeah that's what my 4850 is like. Definitely not right! Thanks for the replies everyone. The card will be going back, but I bought it off ebay. So this causes another issue...

[Polarman]

I may not have the Force3D card but i do have a 4870 + twin turbo installed and i do not have that kind MEMIO temps.

My MEMIO is around 55 (idle) and my shadercore is a lot lower too. My other temps are similar to yours like VDDC. My fan speed is only at 75% too.

[rodneyhchef]

Here's what force3d say:

Originally Posted by force3d

Dear Sir,



Firstly, thank you for your kind support of our product.



For the 4870 reference board, since it is acquired with GDDR5 memory and Digital PWM circuit. The heat dissipation in full load condition is much more than 4850 (GDDR3 + Tradition LRC circuit)



The stability of 4870 will be not affect by the high temperature as it is in acceptable range of Digital PWM circuit.



So, I think the issue is independent to the high temperature.



Would you mind trying the followings so as to resolve the problem



1) disable all the CPU and VGA overclock settings

2) restore motherboard BIOS default

3) improve the ventilation inside the system

4) update the latest VGA driver from the URL below

http://ati.amd.com/support/driver.html

Before driver installation, make sure the old driver is uninstalled



5) Test the system with another power supply if available, make sure the power supply provides system with sufficient power.



Finally, if it does not resolve the problem, you may send your card to reseller (where you buy the VGA card) for warranty.



Any inquiry, please feel free to contact us.



Best Regards,

Ken Wong

Technical Support

This sounds like a generic response to me?

[cpassamani]

I have a 4850 sapphire with the 2 slot cooler. The noise was bothering me and i decided to change and i chosed a accelero s1 with turbo module. My memio temps was always very high since then. When I move it away i could see the contact between the cooler and the GPU was horrible. About 25% of the GPU wans't touched by the cooler. I tried a lot of times mount and unmount the cooler. The only way that make it works was take away the clear plastic rings of the tails spins. Latter I can post my temps.

[Arciks]

i hope u will make it mate

[Jonny_doe]

so for jumping in but where is the memio on the card ????
Mind is also the highest temp , so i wouldn't mind checking out what's cause this ....

[Flyordie]

Originally Posted by FR@NK

This is exactly what is happening. Either you have uneven pressure on the GPU Die or the heatsink base isn't perfectly flat. RMA the card or switch out the heatsink.

Stock heatsink Idle:
[IMG]*snip*[/IMG]

Stock heatsink under max load:

^^^^

Thats not full load...
Rename Furmark and voila.
Anyway, yes.... that is VERY high for temps on the memIO. The temps on my HD4850 @ 750Mhz never even get that high, so RMA or get some RAM/MOSFET Heatsinks.

[rodneyhchef]

Got it Sent back for a refund. Waiting to see what hapens with the next gen now for an upgrade.

[cpassamani]

Before i modify the instalation of the accelero s1 the memio temps at full load reached 110ºC...

Now my temps:
Idle:



Full load:



Full load OC:


My problem is solved, but i'll never buy an arctic cooling product again.
I have a zalman cooler in my another video card and i had no problem...

[silkstone]

It's definetly your Cooler not being seated correctly. I tried to add a water block to my gpu and the same thing happened. No matter which way i seated it my memio was always a lot higher. I ended up taking it off and going back with the stock cooler.
Check the thermal paste has been applied to the full face of the GPU, as the memio core is in one corner of the gpu (but i don't remember which. Also try taking off your cooler and reattatching it, turn each screw 360 then move onto the next screw till it's tight enough

[silkstone]

It's definetly your Cooler not being seated correctly. I tried to add a water block to my gpu and the same thing happened. No matter which way i seated it my memio was always a lot higher. I ended up taking it off and going back with the stock cooler.
Check the thermal paste has been applied to the full face of the GPU, as the memio core is in one corner of the gpu (but i don't remember which. Also try taking off your cooler and reattatching it, turn each screw 360 then move onto the next screw till it's tight enough.

If you have proper contact, Shadercore, dispio and memio should only be a few degrees apart (even at load) My 4850 runs at 47.5-46-48 (disp-mem-shad)

[summersend]

Temps are insane but i got em 2.Actually alittle higher with the quimoda.I put a 5500 rpm fan on mine.It was an old 939 cpu fan that runs 5500 default.Took the old fan out as to not constrict airflow.I really wonder what kinda silicon there using nowadays since the old stuff would come no where near these temps?I just looked above i guess its the ac5 ur usinr but even with huge airflow i get past 70c in 3do6.I think these thermal pads actually insulate instead of transfering heat.I replaced my 8800gts with the ceramiq because i heard it was non conductive.Is ac5 non conductive or it got silver in it?Last the newer 4850 and some 4870 have nadda on there memory wtf.Ive always thought the mem was the most delicate part of the system but i guess ill go with trust on this one.120C on hardgaming seems unbelievable to me but its happening.

[youssef_che]

I advise you to increase the fan speed in the overdrive section in AMD Catalyst Control Center(version 9.2 or higher) & retest the card

[heky]

He allready sent it back people. Oh and memio is not the temperatue of the memory, but of the memory controler inside the GPU chip. So his problem was caused by an uneven contact of the cooler with the core.

[youssef_che]

just trying to help.....

[AsRock]

MEMIO is not the ram it's one of the VRMS so either check the contact of them or RMA it. I'd say either the chips faulty or it has bad contact with that chip.