Same with me. Uses 12.11 Beta4 gaming will stuck (no BSOD or auto restart) after 10 minutes and need ALT + Tab close the game manually. Using back 12.10 will give smoothly gaming.

Mine is Sapphire HD7870 non OC version.

May I know if you install the new 12.11beta4 after uninstalling previous driver or you just install it on top of your old driver? PC system is weird..even when using similar hardware, similar OS, similar driver etc..one got no issue while another got issues with their system...registry counts every single thing i guess or maybe even more complicated things are counted

I never uninstall old driver before installing the new one so far no problem occurred that's why I dont have any complaints on AMD Radeon's hardware, instead I love their products and software and yes I'm talking about single card here .

Installed 12.11 beta4 after uninstall previous driver. I also didn't have any idea why became like this. While other people got nothing issued with 12.11 beta4. Seems like must format and re-installed OS then only can compitable with new 12.11 Beta. Regedit might be bengong one

I hate to admit that Catalyst driver or CCC is still buggy.
It is recommended that to upgrade driver is to uninstall the old one first using Atiman Uninstaller 7.0.2(to thoroughly clean out drivers)
It will automatically reboot upon finished installation.
Then proceed for 2nd cleaning by using Driver Clean Pro 1.5
Go to Device Manager > Display adapter to remove the driver. Check the "remove driver software...."
Reboot then install new driver.
MS Visual C++ is another problem maker. Uninstall it prior to new installation might solve your instability issues.
Sometimes a failed OCing will make the whole system hung when CCC is launching. In this case you would have to repair the CCC or more worse the whole driver, profile, CCC and MSI Afterburner

Is that .Net Framework also affect this matter?

yes, I heard some ppl having issues with .Net as well. Repairing it will do.

Might be because im download from 3rd party link not from Microsoft official site.

any guide OC sapphire hd7870OC?
I cant find.

the steps to OC our GPU are pretty much the same:

Guru 3D: http://www.guru3d.com/articles_pages/radeo...ck_guide,2.html

Hardocp: http://www.hardocp.com/article/2012/07/02/...ii_top_review/3

You can use either MSI AB, Asus GPU Tweak or Sapphire Trixx(Download from my 1st post) to OC your HD7870 OC. each time we increase our GPU core and memory clocks, we have to test its stability by performing a GPU stress test and couple round of bencmark sessions. If our PC is stable after let say few hours of test, we may increase again the clock,

I prefer we do it one by one. Start with OC the GPU core first. Once we find the maximum stable clock...reduce it about 10-15MHz and that's our Max OC for GPU clock..then only we can start with overclocking mem clock by going thru the same process.

Thanks. Normally the capabilities of this card can reach at what speed and maximum memory?

Whoa bro..i never use HD7870 before so cant comment about that...you can try it yourself and let us know how high it can go.

however, according to some of the reviews I think most of 7870s can be oc'ed up to 1250MHz with a voltage bump. Why not try it bro and update us

^ No need optional RAM/VRM heatsink if oc gpu ram to max limit?

^ I think the max stable clock on GPU core and memory that we achieved is depends on GPU cooling performance as well...The better the cooling solution that we use, the higher OC potential or in other word higher max OC that we can get out from our GPU.

If we use reference AMD HSF, normally due to high temps or the noise we cannot push our card further for higher OC. If we use a WC on our GC, the max limit will be higher than using stock HSF.

OC potential for our card usually base on our gpu chip potential, temps, noise, cooling performance, gpu ram potential.

Usually WC > Aftermarket Cooler > Stock HSF for overclocking. Maybe Kevin can clarify more as I'm also newbie here.

This post has been edited by shepard: Nov 11 2012, 12:51 PM

VRAM = memory/ram
VRM = voltage regulator module which is delivering the power to GPU
VRAM OC on stock/ref cooling should be fine because stock cooler usually comes with VRAM as well as VRM thermalpads.
afaik there's no temp. sensor on the VRAM (VRM has) so you just have to try and error for the most stable VRAM clock.
Start with stock voltage to find the max clock, then only overvolt it to the max.

Anything above 1300MHz on air is basically a golden card.
You should definitely not be going above 1.3v unless you're under water.
The higher the ASIC score (recorded by GPU-Z), the better the card performs on air.
The lower the ASIC score (recorded by GPU-Z), the better the card performs under water.



This post has been edited by owikh84: Nov 11 2012, 01:26 PM

I'm using MSI 7870 Twinfrz iii 2GB/OC, i5 3470, 4GB 1600 & SSD with 650W PSU win 7 U

I'm having 2 problems:

When playing NBA 2k12, i got BSOD after 10 minutes in game, average FPS 40-50 max except x4 AA.

Power Limit +18%
Core 1180MHz
Mem 1385MHz
Fan auto
temperature around 60'C
BSOD

Battlefield 3 Ultimate avg 45-55FPS:
After 20mins in game, after got shot while zooming in blood splattering the game freeze, ctrl+alt+del out desktop got the message:
Display Driver has stopped responding & has recovered...
Had to go taskpanel to quite BF3.exe

Voltage Forced Fix 1225mV
Power Limit +20%
Core 1200MHz
Memory 1450MHz
Fan auto
max GPU temp 67'C

Can you guys tell me if the problem is my card or OC or it's game/OS problem?

Ok, if I understand your issue correctly. You're overclocking your 7870 for gaming, the GPU temperature looks fine to me. Your problem is BSOD while playing NBA2k12 and BF3 freezed during gameplay at specific area.

Could you let us know your driver version and which OC apps you're using to overclock your GPU, is it MSI AB, Asus GPU tweak or something else? It's also recommended to share your CPU specs as well...CPU,RAM oc'ed or not?

Have you tried play those 2 games at stock GPU clock? were BSOD and freezing occurred at stock GPU clock as well?

9.002-120928m-149042c-ati
catalyst 12.10
2D 8.01.01.1266
D3D 9.14.10.0926
OGL 6.14.10.11931
CCC 2012-0928.1532.26058
AMD Audio 7.12.0.7708

Afterburner 9.14.10.0926

MSI HD7870 Twinfrozr iii OC, MSI H77A G43, 4GB Ram 1600, i5 3470 no OC.

For Battlefield i went ahead & used 1218V, +20%, 1200 Core, 1430 Memory. Max temp 70'C. 2nd try i managed to play for an hour no issues. Before this i applied windows fix it thing to fix the update rate based on Display Error msg. But seems Battlefield not pushing the card to max most of the time despite only getting 45fps.

Now going to try NBA 2k12.

Just now i tried again on NBA 2k12, very strange it gives BSOD when i'm in the game menu, i don't think the GPU is running even half point of the clock & temp should be normal. Note it gave BSOD in game menu not in game.

Same thing as Euro Truck 2, entered the 1st loading screen gave BSOD.

Later i tried a few things, lowered clock while entering & turn it up inside game, seems ok, then i exit and reenter the game straight using turn up clock no problem tried few times.

Now i'm sure it's not due to temp problem so i can't figure out what is the cause.

Any suggestion to get good stress test? Current max temp on GPU is 73'c.

Just wondering how much clock you guys managed to set for 7870 Twinfrzr iii?

I dont know if you aware of this, and I dont like to share a bad news either but the truth is a lot of 7870's users out there are having a problem like black screen, PC freeze, driver reset etc.. I am not sure about BSOD though, can you please share with us your BSOD code? it should be something like 0x124, 0x101, 0x0A etc.. it could also be your games ( either ori or not?).

maybe other user with HD7870 card can enlighten us here? I'll try to get some info regarding your problem..

Yeap, i heard that issues also. At Hardware QA 2 people got problem with sapphire 7870. Ask for warranty.