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Best 7950 at the moment for OC-ing (so voltage unlocked) /w limited choice... - Page 2

post #11 of 41
Not sure about the others but my MSI TF3 cards are locked at 1.25v. One got 1200/1575 out the box(didn't try any higher) and the other got 1150/1575 no prob. In cf the top card gets 73c and the vrm's get to 76c. I use gpuz, but have read it reads temps around 5c high on the vrm temps.
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post #12 of 41
Quote:
Originally Posted by john1016 View Post

Not sure about the others but my MSI TF3 cards are locked at 1.25v. One got 1200/1575 out the box(didn't try any higher) and the other got 1150/1575 no prob. In cf the top card gets 73c and the vrm's get to 76c. I use gpuz, but have read it reads temps around 5c high on the vrm temps.

If you plan on water cooling get a card that is built on reference HD7970 PCB.

Good thread with lots of information about these cards.

http://www.overclock.net/t/1281711/hd7950-revised-with-reference-hd7970-pcb-club/550
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post #13 of 41
I would recommend getting an MSI 7950 OC edition. It has a great looking cooler, performs like a beast, is voltage unlocked, and is built on the 7970 PCB, giving it more capability to handle more volts with a more robust VRM design and a 8+6 pin power in. I have this card, and to say the least, it looks sharp in my system tongue.gif

Flashed with a Sapphire bios though, is where this card really shines. was able to complete a 3dmark run at 1300/1720 with no artifacts.
ASIC quality is at 84.7%.

http://www.overclock.net/t/1281711/hd7950-revised-with-reference-hd7970-pcb-club/60
here is the link where I found out how to flash the bios. The bios on the page that the link brings you to.

In the end though, they're all good cards; you can't go wrong with any of them. Personally, I like the look and the features of the MSI (7970 PCB, Overvoltage, etc.) and strongly recommend it, although the fans get a bit loud above 65% speed--not that you'll be up there very often, though. thumb.gif
post #14 of 41
Quote:
Originally Posted by john1016 View Post

Not sure about the others but my MSI TF3 cards are locked at 1.25v. One got 1200/1575 out the box(didn't try any higher) and the other got 1150/1575 no prob. In cf the top card gets 73c and the vrm's get to 76c. I use gpuz, but have read it reads temps around 5c high on the vrm temps.

Afterburner won't adjust the voltage on the TF3 for some reason. Voltage is unlocked but you have to use Sapphire's Trixx instead.
 
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post #15 of 41
I heard that amazon is selling the MSI TF3 7950 version with the 7970 ref board, where as other stores like frys or newegg still carry the one with the 6+6pin/non 7970 ref board 7950's.

Looking at the pictures posted on newegg... looks like its a 6+6pin... so definitely not your 7970 ref board. If you go MSI TF3, try amazon?
post #16 of 41
Quote:
Originally Posted by c20h25n3o View Post

With all the changes over time in the development of the 7950 (hardware/bios/drivers), I was wondering which the best option is for now.

I was gonna go for the Gigabyte 7950 WF3, but now I read everywhere that the new models are voltage locked (hardware, can't be solved with a bios flash)
So my attention switched to the Sapphire Vapor-X, which may or may not be locked. I'm reading a lot of contradicting posts. But from what I understood the voltage is unlocked in the standard bios. But the temps on the VRM go way too high. So not sure about that one too.

So, with all knowledge we have now which is the best 7950. Availability here is a problem, so XFX and HIS is very difficult to find.

My options are:
Sapphire: (not sure why there are so many different models, what's the difference between 20G and 40G for instance...)
11196-16-20G
11196-09-40G (Vapor-X)
11196-07-40G (FleX)
11196-02-40G
11196-01-40G
11196-01-20G
11196-00-40G (cheapest @ 275e)

Gigabyte:
GV-R795WF3-3GD (Windforce 3)

ASUS:
HD7950-DC2T-3GD5
HD7950-DC2T-3GD5-V2

MSI:
R7950-2PMD3GD5/OC (@340e the most expensive)
GDDR5 R7950 Twin Frozr 3GD5/OC

So which one is the the most likely to run stable between 1100/1200 without the temps freaking out? Which one is voltage unlocked for sure? And which one keeps the VRM the coolest?

I know the question has been asked many times, but with all the changes in bios and drivers the old benchies aren't really representable anymore.
I'm leaning towards the Vapor-X, but the price is quite high @ 312e.. Is it worth the extra cash?

Thanks.
Hi I'm using the 8+8 Vapor-X no problem overclocking and voltage is adjustable in Afterburner.....good cooling, quiet but the vrm's overheat if too much vgpu is applied.



Btw
just to let you know, the numbers you used below are not the actual model numbers, they just determine whether the card is a lite or retail package.
The part number that identifies the exact model/version looks like PN: 299-2E210-104SA....hope this helps.

My options are:
Sapphire: (not sure why there are so many different models, what's the difference between 20G and 40G for instance...)
11196-16-20G
11196-09-40G (Vapor-X)
11196-07-40G (FleX)
11196-02-40G
11196-01-40G
11196-01-20G
11196-00-40G (cheapest @ 275e)
Edited by Pill Monster - 4/1/13 at 8:32pm
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post #17 of 41
Quote:
Originally Posted by Aesthethc View Post

I heard that amazon is selling the MSI TF3 7950 version with the 7970 ref board, where as other stores like frys or newegg still carry the one with the 6+6pin/non 7970 ref board 7950's.

Looking at the pictures posted on newegg... looks like its a 6+6pin... so definitely not your 7970 ref board. If you go MSI TF3, try amazon?

I got mine from newegg, with an 8+6 pin power pin built on a reference 7970 pcb. The picture may not be updated, but newegg, and other retailers I'm assuming, are selling ones built on the 7970 board.
post #18 of 41
Quote:
Originally Posted by Pill Monster View Post

Hi I'm using the 8+8 Vapor-X no problem overclocking and voltage is adjustable in Afterburner.....good cooling, quiet but the vrm's overheat if too much vgpu is applied.



I have a Vapor X HD7950 Boost card and it is a poor over clocker. Voltage is locked at 1.25v under load and has poor ASIC score of 57%.


I also have a Sapphire HD7950 950mhz Edition card which is built on reference HD7970 PCB with high ASIC score of 87% and over clocks like a champ.
1370/1800 3dMark11 run with the 950mhz Ediiton HD7950.

http://www.3dmark.com/3dm11/5566083
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post #19 of 41
Quote:
Originally Posted by SonDa5 View Post

I have a Vapor X HD7950 Boost card and it is a poor over clocker. Voltage is locked at 1.25v under load and has poor ASIC score of 57%.


I also have a Sapphire HD7950 950mhz Edition card which is built on reference HD7970 PCB with high ASIC score of 87% and over clocks like a champ.
1370/1800 3dMark11 run with the 950mhz Ediiton HD7950.

http://www.3dmark.com/3dm11/5566083
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Liquid cooled, I'm guessing?
Also, what volts are you using for your card @87% asic for both mem and core?

Thanks a bunch for your sapper.rom. For some reason, I got a lot better results overclocking with the sapper than my msi OC ones.
post #20 of 41
Thread Starter 
Quote:
Originally Posted by Falcy View Post

For starters, i will only talk about Sapphire.

Yes, it seems like there are alot of different versions out there.
I can tell you this, i have a card with one of the SKU-numbers you mentioned above, 11196-09-40G. Its a dual-BIOS card with boost. I run this @ bios1, none boost. Stock 850 / 1250MHz.
With MSI AB(latest beta) i can fully adjust both the VDC and the MVDC. I can report that temperatures and VRMs are more then OK. Not exceeding 80°c with full OC.

Keep in mind that even tho that is the same SKU#, there is also something called Part#. And it could be a huge difference there aswell...




Above temperatures are after a couple of 3DMark runs. But hey, add another 15°c to get the "Furmark temps", and you still wont exceed 80°c.
Also take note of the max fanspeed. Only 42%, so the VP-X is not just a good cooler it is also very quite. I could set the fan to 100%( and let my Antec P280 leave ground... biggrin.gif ) and drop the temps another 10°-15°c.


Next picture just shows another 100MHz on the memory, i forgot to add the temperatures there. But there is no big difference in the temperatures.
Also i got a pretty low ASIC-value, 59.1%. But i will keep this card anyway. I am happy with this OC and everything. No way i can complain with a 350-400MHz of OC, right?





If you(or anyone else) want more information about the card or whatever, just ask. smile.gif

How long ago did you buy your card? From what I read across the internet, they started using crappier GPU's and memory for the Vapor-X now and it's nowhere near the quality it had.
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