7950's on 7970 PCB

qbazdz · 13 Sep 2012 at 00:16

Just for a reference for everyone really can we list all 7950 cards which have 7970 PCB and 6+8 pin design?

1. MSI Twin Frozr
2. Sapphire Vapor-X
3. Sapphire Dual X OC 950MHz edition (non boost)

??

555BUK · 13 Sep 2012 at 00:33

Plenty of reports suggest that the Sapphire Vapor-X is volatge locked, meaning limited overclocks even if it does have the extended pcb.

Spenty · 13 Sep 2012 at 00:51

Some guy reported buying an MSI 7950 which had the 7970 shaders. People were saying it's a fluke though and it must have been packaged as a 7950.

qbazdz · 13 Sep 2012 at 07:43

I think Ive read that. It was a bug in old gpu-z version

Cane316 · 13 Sep 2012 at 10:05

555BUK said:
Plenty of reports suggest that the Sapphire Vapor-X is volatge locked, meaning limited overclocks even if it does have the extended pcb.

been able to up the voltage on mine. Have seen people saying theirs is locked though. Flashed mine to the 7970 bios with no issues which raised the stock voltage from 0975 to 1025

qbazdz · 13 Sep 2012 at 10:17

I thought Vapor-X is only locked on Boost bios, but when you move to the stock clocks (other bios switch setting) then you can do it no problem.

JUZTIQ · 17 Sep 2012 at 20:38

Sapphire 7950 Vapor X OC Boost version IS voltage locked according to the
answer I got from Sapphire Customer Support when I asked them that very same question:

http://battlelog.battlefield.com/bf3/forum/threadview/2832654489958091828/last/

........ why did they ruin a great card like that :confused:

J.D · 18 Sep 2012 at 00:45

JUZTIQ said:
Sapphire 7950 Vapor X OC Boost version IS voltage locked according to the
answer I got from Sapphire Customer Support when I asked them that very same question:

http://battlelog.battlefield.com/bf3/forum/threadview/2832654489958091828/last/

........ why did they ruin a great card like that

Can't you use Trixx?.

I've got a Sapphire 7970 OC coming tomorrow and hope it's not the same.

oweneades · 18 Sep 2012 at 09:35

J.D said:
Can't you use Trixx?.

I've got a Sapphire 7970 OC coming tomorrow and hope it's not the same.

The voltage "locked" issue is something unique to the HD750 Vapor-X thus you should be fine.

J.D · 18 Sep 2012 at 09:55

oweneades said:
The voltage "locked" issue is something unique to the HD750 Vapor-X thus you should be fine.

Thank you oweneades. I was a little worried due to sending back a Windforce 3X 670 as the 7970 excels when overclocked. So if I had no or little ability to do so, I'd be in a pickle. Also I ordered at 3:50PM yesterday but seems as if I missed the cut off time, it's still in the warehouse :mad:

. I can last another day on CS:GO

.

qbazdz · 18 Sep 2012 at 10:46

I've read people had success to unlock voltage for Vapor-X by flashing 7970 bios.

My stuff didn't leave warehouse yesterday either and I've placed the order just before 1pm.

J.D · 18 Sep 2012 at 11:05

qbazdz said:
I've read people had success to unlock voltage for Vapor-X by flashing 7970 bios.

My stuff didn't leave warehouse yesterday either and I've placed the order just before 1pm.

Are the memory timings in the ram equal between the 7950/7970?. I flashed my 6950 for the extra shader unlock but didn't flash the 6970 BIOS due to different memory modules between the 6950 and 6970 cards. The method I used kept the 6950 memory timings.

Thank you for the info and also for sharing your warehouse problem as I've been kicking myself all morning for not ordering earlier than I did. I'd still be waiting till tomorrow regardless it seems. I hope you and I get our confirmation of shipping mail today at some point

.

qbazdz · 18 Sep 2012 at 12:01

If the card is on the same PCB I'd imagine that if anything the timings would be looser hence potentially allow extra OC.
Don't quote me on that just yet

I'll try to dig out the source.

As long as I get my block by the weekend then I'm a happy

ussff · 18 Sep 2012 at 16:56

I have the Sapphire VX - Leave the bios button alone (850/1250) and it will clock and MSI afterburner will adjust the VDDC - If you press the bios button to 950/1250 it will lock the voltage and clock very poorly... Mine is currently 1170/1500 with 1140mV but its a bit toasty at 69Deg on a long run.

RoEy · 28 Dec 2012 at 14:24

looking to get this with an ek 7950 waterblock is it a 7950 reference pcb?

http://www.overclockers.co.uk/showproduct.php?prodid=GX-275-AS&groupid=701&catid=56&subcat=1673

Rusty0611 · 28 Dec 2012 at 14:28

RoEy said:
looking to get this with an ek 7950 waterblock is it a 7950 reference pcb?

http://www.overclockers.co.uk/showproduct.php?prodid=GX-275-AS&groupid=701&catid=56&subcat=1673

Says this...

Power Connectors: 8-pin + 6-pin

So I guess not then. I'm not entirely sure what block you'll need though

RoEy · 28 Dec 2012 at 14:51

Bugger, may have to look at a diff card.

Nuclear Fusion · 28 Dec 2012 at 16:57

RoEy said:
Bugger, may have to look at a diff card.

I'd say just go for any 7950 which is on a 7970 PCB and then get a 7970 block for it. There isn't any difference in terms of overclockability (silicone lottery aside) between the 7950s which are on reference 7970 PCBs, only difference is the cooler (which doesn't matter) Just go for one with a good warranty and price

Cleeecooo · 28 Dec 2012 at 17:16

Nuclear Fusion said:
I'd say just go for any 7950 which is on a 7970 PCB and then get a 7970 block for it. There isn't any difference in terms of overclockability (silicone lottery aside) between the 7950s which are on reference 7970 PCBs, only difference is the cooler (which doesn't matter) Just go for one with a good warranty and price

+1

RoEy · 28 Dec 2012 at 18:54

How do you tell if its a 7970 on a 7950 though? I really want to get the Asus 7950 v2 but not fully sure if its ref and 7950/7970 PCB. I want a black PCB too, picky I know but that's what I want.