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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 1672

post #16711 of 38701
Quote:
Originally Posted by King4x4 View Post

CF 7950s here... best buy I did. Good luck on those Sapphiress... Can you confirm if they are voltage locked?

Dont think these are voltage locked yet. However the newer versions are.
Edit: checked to be sure, this version is not voltage locked.
Edited by rck1984 - 10/14/12 at 4:44pm
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post #16712 of 38701
Quote:
Originally Posted by psyside View Post

Some kind off advanced questions, please anyone help me.
1. What would be the benefit of 7970 BIOS on 7950 card?
2. Is this early revision of Sapphire dual X any good, it uses 7970 PCB or im wrong?
3. its better then Vapor-X recent locked bs right, but Vapor-X has thermal pads, this does not correct?
4. Is the vrm design bad/good, inferior to newer Sapphire 950mhz versions, what is the difference?
5. Does it worth to replace the stock thermal paste and add some aluminium plates to improve VRM cooling ?is it good at all on this card, and does this card also have thermal pads?
6. Does adding new paste + pads or even tighting the card (if its not good mounted) avoid the warranty?
7. Does it worth to flash the latest vBIOS at all?
8. What would be the max temps lets say at 1150/1600 with 1.2v with fans @ 60%
Few more pics,

Let's see if I can hit these...

1: Higher stock voltage on the memory without using afterburner, and a more aggressive overall profile for overclocking.
2: All Sapphire 7970 OC versions use the reference PCB. I have a reference waterblock on mine.
3: It has thermal pads, that black plate is a heatsink and part of the cooling system.
4: I'm not sure of any difference between the two myself.
5: I didn't see any difference between stock thermal paste and aftermarket paste while swapping my stock cooler back and forth. VRM sinks are not needed, see #3
6: Sapphire puts a silly amount of TIM on their cards. It's impossible to clean off without leaving some behind in places where it can't be removed, and if the cooler has been removed, your warranty is void.
7: Updates are always better.
8: Completely situational, you'll only know with your card in your case what it'd be.
Edited by Ganf - 10/14/12 at 8:26pm
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post #16713 of 38701
Been wondering about installing a custom backplate onto my Sapphire Dual-X 7970 (OC). Question is - will it void my warranty? My guess is yes, since I'll probably have to remove at least some of the screws. Under my LED lights in my case on a white LED setting, it looks like there's something on the X indents on all of the phillips screws, possibly a substance to help identify whether a screwdriver has been used on them (looks kind of copper-tinted on otherwise silver screws). Or am I imagining things? Is there a good way to go about this?

Anyway, to install a backplate, I'd also have to get some thermal pads in between to avoid any electrical shorting? So maybe I could just stick it on with thermal pads that are semi-sticky, without removing any screws? (Any suggestions which pads to use for that, so they could be removed in the future without issues?)
Edited by ElevenEleven - 10/14/12 at 8:38pm
   
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post #16714 of 38701
Quote:
Originally Posted by rck1984 View Post

Dont think these are voltage locked yet. However the newer versions are.
Edit: checked to be sure, this version is not voltage locked.

What's with all of the voltage locking? First Nvidia, now AMD, are we going to have to go back to soldering irons and pencils?
Quote:
Originally Posted by ElevenEleven View Post

Been wondering about installing a custom backplate onto my Sapphire Dual-X 7970 (OC). Question is - will it void my warranty? My guess is yes, since I'll probably have to remove at least some of the screws. Under my LED lights in my case on a white LED setting, it looks like there's something on the X indents on all of the phillips screws, possibly a substance to help identify whether a screwdriver has been used on them (looks kind of copper-tinted on otherwise silver screws). Or am I imagining things? Is there a good way to go about this?
Anyway, to install a backplate, I'd also have to get some thermal pads in between to avoid any electrical shorting?

I didn't have any tamper paste on the screws of mine, but that may be a recent addition. If there is paste on them, that's a voided warranty.

When you buy a backplate it comes with the insulator of choice, typically plastic washers to go around the screws. Be careful when you're installing to read the manual and make sure that none of the leads are touching the backplate before you reinstall it. Double and triple check, sometimes they can be hard to see.
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post #16715 of 38701
Quote:
Originally Posted by Ganf View Post

Let's see if I can hit these...
1: Higher stock voltage on the memory without using afterburner, and a more aggressive overall profile for overclocking.
2: All Sapphire 7970 OC versions use the reference PCB. I have a reference waterblock on mine.
3: It has thermal pads, that black plate is a heatsink and part of the cooling system.
4: I'm not sure of any difference between the two myself.
5: I didn't see any difference between stock thermal paste and aftermarket paste while swapping my stock cooler back and forth. VRM sinks are not needed, see #3
6: Sapphire puts a silly amount of TIM on their cards. It's impossible to clean off without leaving some behind in places where it can't be removed, and if the cooler has been removed, your warranty is void.
7: Updates are always better.
8: Completely situational, you'll only know with your card in your case what it'd be.

Thanks alot, rep + thumb.gif

And about temps, i get the idea that they are variable, but i wanted to get general idea for room around 20c is winter here smile.gif
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post #16716 of 38701
I can't even guess then, because my ambient temps when I had my stock cooler were 35c. I saw load temperatures of 72 or so at those clocks and at that temperature, so assuming optimal conditions you could expect about 60.
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post #16717 of 38701
Will be picking up a 7970 when I sell my 580. Best brands and should I get custom or just the 1 fan design?
post #16718 of 38701
*Double post*
post #16719 of 38701
Quote:
Originally Posted by psyside View Post

Some kind off advanced questions, please anyone help me.
1. What would be the benefit of 7970 BIOS on 7950 card?
2. Is this early revision of Sapphire dual X any good, it uses 7970 PCB or im wrong?
3. its better then Vapor-X recent locked bs right, but Vapor-X has thermal pads, this does not correct?
4. Is the vrm design bad/good, inferior to newer Sapphire 950mhz versions, what is the difference?
5. Does it worth to replace the stock thermal paste and add some aluminium plates to improve VRM cooling ?is it good at all on this card, and does this card also have thermal pads?
6. Does adding new paste + pads or even tighting the card (if its not good mounted) avoid the warranty?
7. Does it worth to flash the latest vBIOS at all?
8. What would be the max temps lets say at 1150/1600 with 1.2v with fans @ 60%
Few more pics,




I personally have a Sapphire 950mhz ed so I might be able to take some pictures for you.

1. Using a 7970 bios would only provide you with higher clocks and a higher stock voltage. You shouldn't need to use the 7970 bios as those speeds could easily be achieved by some overclocking. You have to be really unlucky to not get 925 on core clock.
2. That early version of the 7950 is a reference design non AIB 7950 board.
3. The Vapor X is only voltage locked when you select the second boost clock. It's completely voltage adjustable when you select the normal 850mhz bios. Check out this review for the cooler and temps - http://www.techpowerup.com/reviews/Sapphire/HD_7950_Vapor-X/
4. VRM vary from manufacturer to manufacturer, but its best off to keep the temperatures below 90. The 950 mhz ed. uses a reference 7970 design, the difference being an added VRM.
5. Yes, however you would void your manufacturer warranty. Just remember to use a thin layer of thermal paste, rather than the slop that Sapphire slapped on. I STRONGLY recommend you improve your VRM cooling if you are going to overclock your card. The VRM temperatures was what stopped me from going to a higher stable core clock.
6. Yes, yes and yes. But as long as your very careful and don't damage your card in the process you should be fine.
7. Yes, but I never knew sapphire would publish a new revision of a BIOS. Mind linking me?
8. I cannot say your temperatures, but I'll give you mine as a reference. Mine is currently overclocked at 1235 core clock, memory 1250, voltage 1.162, custom fan profile. The temperature is 32 idle and 68 load. However in mine the VRM cooling is bad and adding any more voltage would cause my VRMs to heat up to 110.
post #16720 of 38701
Quote:
Originally Posted by OverClocker55 View Post

Will be picking up a 7970 when I sell my 580. Best brands and should I get custom or just the 1 fan design?

I'd recommend the Sapphire 7950 950mhz ed, as it comes with a 7970 PCB and is super quiet under load even when overclocked.
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