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HD7950 revised with reference HD7970 PCB club - Page 2

post #11 of 847
Quote:
Originally Posted by SonDa5 View Post

My biggest concern is if the stock TF3 has the proper offset diamond for proper GPU contact. I would check to see if the TF3 heat sink has that. I've reads of HD7900 cards having over heating problems because they shipped with a flash surface heat sink that didn't make proper contact on gpu die.
I would run Furmark at stock card settings with HWinfo64 sensor readings going and monitor temps for about 15 minutes. If the gpu is in the 80s or the VRMs are clost to 120C I think the card doesn't have good enough stock cooling and you are going to be hitting the wall when over clocking because of weak heatsink and weak PCB heatsink. To hot.
So open it up?
It should have that diamond thing?
post #12 of 847
Thread Starter 
Quote:
Originally Posted by tw23 View Post

Are you water cooled?

Yes.

There is a photo of my Swiftech MCW82-7900 block in first post.

Here is another photo.

Day1MCW82.jpg


Before I water cooled I did alot of testing with the stock heat sink any my card could do 1300mhz but the temps were much higher so I tapered back to 1200mhz to keep cool till I water cooled.
Edited by SonDa5 - 7/22/12 at 12:34pm
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B.K.T.
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post #13 of 847
Thread Starter 
Quote:
Originally Posted by tw23 View Post

So open it up?
It should have that diamond thing?

It's up to you. Not sure how cool MSI is about opening up the card but I don't see any problems with doing it. Just be careful no to damage the card and take it easy on the screws.


Your heat sink should have a diamond offset like the one in this photo.


layoutSapphire950mzcard.jpg
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post #14 of 847
Thanks wink.gif .

What did you have before you water cooled at 1200MHz?
post #15 of 847
Quote:
Originally Posted by tw23 View Post

Maybe... Also I'm getting max 72C and 67C constant while playing BF3 on Ultra 1080p @ 1080/1575 at stock voltage... Should I reapply thermal paste or open it up and do something?
Thanks wink.gif .

How good is your case cooling ? How many case fans ? its very important to create a good airflow (wind tunnel) .Do you have a 120mm fan provision on the side panel which can blow cool air onto the card. That helps in most cases to reduce temps.
Generally if things are working fine I wouldn't mess around with the card like opening it up or flashing some other card's BIOS. Your best bet is voltage tweaking and getting 1150 Mhz at less than 75c temps. If that can be achieved by improving case cooling thats the first thing to focus on.
Edited by raghu78 - 7/22/12 at 12:45pm
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post #16 of 847
Quote:
Originally Posted by raghu78 View Post

How good is your case cooling ? How many case fans ? its very important to create a good airflow (wind tunnel) .Do you have a 120mm fan provision on the side panel which can blow cool air onto the card. That helps in most cases to reduce temps.
Generally if things are working fine I wouldn't mess around with the card like opening it up or flashing some other card's BIOS. Your best bet is voltage tweaking and getting 1150 Mhz at less than 75c temps. If that can be achieved by improving case cooling thats the first thing to focus on.
I have 5 120mm fans, 1 200mm fan, 1 140mm fan... pretty sure I have goot case cooling lol. I have it everywhere.
Should I return my card?
post #17 of 847
I suppose this is the place to ask, 310$ MSI 7950 TF3 vs 400$ Gigabyte 670 WF3 for 1440p gaming? Those two cards are the king of price/performance in their price bracket, don't know what to go for though. I ussually only demand a modest AA, but at the same time, would like to future proof abit. Yeah, I get this is apples and oranges.

What would really help in my decision would be some honest oc benchmarks for the MSI 7950 w/ consideration to their ability to flash to 7970 bios, anyone know where i can find some?
post #18 of 847
Quote:
Originally Posted by tw23 View Post

I have 5 120mm fans, 1 200mm fan, 1 140mm fan... pretty sure I have goot case cooling lol. I have it everywhere.
Should I return my card?

wow thats a lot of cooling fans. Can you tell which are intake and which are outtake. also where they are positioned. Returning your card when its doing 1050 Mhz with decent temps is not a good idea.
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post #19 of 847
Quote:
Originally Posted by thehidecheck View Post

I suppose this is the place to ask, 310$ MSI 7950 TF3 vs 400$ Gigabyte 670 WF3 for 1440p gaming? Those two cards are the king of price/performance in their price bracket, don't know what to go for though. I ussually only demand a modest AA, but at the same time, would like to future proof abit. Yeah, I get this is apples and oranges.
What would really help in my decision would be some honest oc benchmarks for the MSI 7950 w/ consideration to their ability to flash to 7970 bios, anyone know where i can find some?

HD 7950 at 1.1 - 1.15 Ghz should be enough to run at 1440p and get decent fps in all the latest games. Your biggest limitation to overclocking comes from the cooler itself. MSI Twin Frozr is good only for 1.1 - 1.15 Ghz overclocks.

http://www.hardocp.com/article/2012/02/08/gigabyte_radeon_hd_7970_oc_video_card_review/8

BF3 2560 X 1600 2X AA

HD 7950 (1195 Mhz) - avg 54.7 min 35 fps

And that review is 3+ months old with older drivers. With the latest drivers and at a lower resolution of 1440p you should have no problem hitting avg 45 - 50 fps in BF3 at 1440p even with Ultra 4X MSAA .

If you want to spend more money I definitely would recommend the Gigabyte HD 7970 Windforce (1 Ghz) for USD 440. Your chances of 1250 Mhz overclocks are better with those HD 7970 OC cards. Plus the Gigabyte Windforce would be able to handle those extremeclocks.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814125413

http://www.hardocp.com/article/2012/02/08/gigabyte_radeon_hd_7970_oc_video_card_review/8

"While idling at the desktop, the stock GIGABYTE Radeon HD 7970's temperature was 34 degrees Celsius while the fans were running at 20%, and extremely quiet. Under full load the temperature increased to 67c, however fan speed only increased to 34%. We did not have any issue with the fans at this speed. On the overclocked GIGABYTE Radeon HD 7970 we had fan speeds set to 80%, which was not as loud as most video cards, and helped remove a ton of excess heat. At idle, the video cards temperature was 25 degrees Celsius. Under full load with fans still at 80% temperature only reached 56c"

HD 7970 will beat the GTX 670 when both cards are overclocked at 1440p if you compare across a wide range of games.
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post #20 of 847
Quote:
Originally Posted by raghu78 View Post

wow thats a lot of cooling fans. Can you tell which are intake and which are outtake. also where they are positioned. Returning your card when its doing 1050 Mhz with decent temps is not a good idea.
Also have one extra smile.gif .
Actually really only 5 fans, because two are my CPU fans biggrin.gif .
1 on top - 200mm - outtake
1 on the bottom - 120mm - outtake
1 on the rear - 120mm - outtake
1 on the side case mesh - 120mm - outtake
1 in front - 140mm - intake

I think I should have more intakes, but not sure which ones I should make intake?
Thanks wink.gif .
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