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[Official] The AMD Radeon 7800 Owners Club - Page 42

post #411 of 4099
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Quote:
Originally Posted by Retro1989 View Post

I bought the msi 7870 today, and i'm loving it ... add me to the club guys!

proof.gif
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post #412 of 4099
Ok, I sent an inquire to EK via there cooling configurator for the MSI 7870 OC card, will have to wait and see what they say.
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post #413 of 4099
Brought my cpu down to 4.5 from 4.8 to get a solid feel of how this 7870 would perform. It did quite well on stock voltage. 1225 / 1450

6918485950_653ee17ab7_b.jpg
3DMARK11 (4.5 - 1225 - 1450) by I viLe styLe I, on Flickr

Can't wait to up the volts~!

moar power.

Here is stock (black edition overclocked) at P6899 http://3dmark.com/3dm11/3161916;jsessionid=1w9mn5ublcxms1wqce3nsyvbd8

Overclocked at 1225 / 1450 http://3dmark.com/3dm11/3162700;jsessionid=1v3h1m8alq54o1drf257oe2ec5
Edited by di inferi - 4/10/12 at 8:15am
post #414 of 4099
Quote:
Originally Posted by Dawn of War View Post

Ill be purchasing a Twin Frozr version of the 7850 this month. Perhaps the questions has already been answered but is the 7850 capable of being OCd to be equivalent to a stock 7870? At what point might you run into issues because of the single 6 pin connector?

No, The 7850 cant be clocked as high as a 7870 in general, that is because the 7870 has voltage control and the 7850 doesnt.

About the 6Pin
The slot gives 75W
The 6Pin gives 75W
Total 150W
Cards pulls about 120W [probably closer to 110W]
+20% power tune = 144W

In other words more then enough power for overclocking.

Quote:
Originally Posted by schreck51 View Post

Wish I could find more testing done with 7850 cf. All I found so far is the one youtube video.

I can run tests if you want.

My 3D11 score is 11334
My Heaven 3.0 score is 1887 [74.9FPS] with Extreme tesselation.

I can run more tests if you like but basicly you can say they run a good bit faster then max overclocked 7970's and 680's for less money.
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post #415 of 4099
Here is a question for you guys....

CCC 12.3 has power control settings at +/- 20% (at least the newest one which I am using).

So what the hell are these guys using?

http://www.kitguru.net/components/graphic-cards/zardon/sapphire-hd7870-overclock-edition-review/20/
post #416 of 4099
Quote:
Originally Posted by Farih View Post

No, The 7850 cant be clocked as high as a 7870 in general, that is because the 7870 has voltage control and the 7850 doesnt.

At least Sapphire HD7850s have GPU voltage control. Look at my results couple of pages ago.. Just MSi AB does not support it yet.
For overvolting your HD7850 use Asus GPU tweak. Its works just fine. If you are not familiar with Asus GPU tweak then be aware that you need to switch it on advanced mode and for more range of clocks you need to select the thingie in options tab as well.
The HD7850 GPU voltage is controlled by NCP5395T, which allowes voltage tweaking by software.
http://www.onsemi.com/pub_link/Collateral/NCP5395T-D.PDF
I also used multimeter to measure real voltage given to GPU
As i remember, the card is quite heavily overvolting itself. Stock voltage was around 1.09v and when pushed to 1.225v on Asus GPU tool, the real voltage was 1.29v on load.
My card did 1240mhz GPU on 3Dmarks.
Unlike HD79xx the HD78xx doesnt have memory overvoltage by software. For this you would need vmem hardmod.
Edited by Supranium - 4/10/12 at 9:33am
post #417 of 4099
Mine just showed!! Time for some pictures lol.
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post #418 of 4099
What is the difference between the MSI R7870 Twin Frozr 2GD5/OC and the MSI HD 7870 Twin Frozr III 2 GB non OC, just that it comes factory overclocked?

The OC and non OC both have a reference PCB layouts so we can expect water blocks for those who were wondering. Thats what my research is telling me.
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post #419 of 4099
If anyone gets the scoop on Water blocks for either of the cards post it up. I am daily looking on vendors and Manufacturers(email too) to get updates on new blocks for these cards. Cant wait for the other two 7850's to show up now.
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post #420 of 4099
The blocks for the 7870 will be out in 3-4 weeks as of now. What I like about the MSI 7870 OC is the memory and mosfet heatsink so you can use a universal block and not worry about the rest. If money is tight its a viable option.

Source
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