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Sapphire vapor-x 7950... Some specific questions - Page 2

Poll Results: Do you think it's still worth to buy the vapor-x 7950 which apparently has lots of issues and complaints like voltage lock, poor vrm cooling. clock flickering etc instead of the cheaper dual-x 7950?

This is a multiple choice poll
  • 18% of voters (2)
    No. Just get the dual-x 7950.
  • 54% of voters (6)
    Yes. Because the complaint regarding voltage lock is not true. Mine is voltage unlocked without any bios flashing.
  • 18% of voters (2)
    Yes. Because the complaint regarding poor vrm cooling is not true, the cooling is not as bad as it's claimed in some places.
  • 36% of voters (4)
    Yes. Because my core clock doesn't flicker. With power limit at 20% It remains at 950 MHz constantly when under load
11 Total Votes  
post #11 of 25
I guess I figured those were enough, but that may be because with a Vapor-X you have to have your eye on the VRM temps when trying to find a stable OC tongue.gif
post #12 of 25
Quote:
Originally Posted by Fulvin View Post

^^You've got it backwards. High ASIC means low leakage, which translates to lower power consumption.

For example, AMD uses high ASIC cores on their 7990's because they have low leakage and thus lower power consumption.
Can you provide any proof of this?

I didn't :-)

What's provided by GPU-Z is not relevant.

Derpinheimer is unhappy with his VRM cooling because same as me, he's got high leakage (and high asic). The VRMs really take a beating and so they get hot.
You've also said you hit the wall already at 1.2V and that's probably because you are hitting a thermal limit very early (also high leakage). How are your VRM temps?

My card behaves the same, and is also 89% asic.

Easiest way to prove this is to run furmark and see the "Current In" for the card. At stock clocks our cards will use more power than the newer, "low asic" ones.
Run your card at 1.25V and it will overheat even with stock clocks = leakage.
post #13 of 25
Quote:
Originally Posted by Driimit View Post

@glina I asked the core and mem voltage on both of ur bios as u can see in my q. U answered about ur BIOS 2 only(which is boost bios?). Hopefully u'll answer fully in ur next post. Thanks anyway your information were helpful.

And the vapor-x 7950 that's currently for sale in newegg also has one 8 pin and one 6 pin connection.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202003&Tpk=sapphire%20vapor-x%207950&IsVirtualParent=1
U said u have an old version with 8+6 pin. So I wonder if the version in newegg is also the older version actually. If everything related to it is old then I'm gonna have some tough time managing the card for sure!! Anyway what are the other power supply combination of vapor-x 7950?

Sorry, am not sure about BIOS1 and can't check now. I think the voltage is 1137mV core and 1500mV mem. I was able to get a higher stock voltage overclock with BIOS1.

Anyways, I run the card undervolted daily and only overclock for some demanding titles.
1000MHz @ 1.012V (0.94V after vdroop) and 1700MHz mem @ 1.5V. Runs lovely, cool and quiet.

The one from newegg will also be 8+8 pin, the description is wrong. All are like this now.
Edited by glina - 6/7/13 at 2:29pm
post #14 of 25
There is no way the minor leakage differences between the cards would add to the power consumption so greatly that it would have such a drastic impact on your VRM cooling. Mine are very cool, but yours on the other hand are scorching hot. Matter of 10-20 watts? I doubt it.

My ASIC stands at 70% and frankly I couldn't run Furmark with 20% power target and 1.25V as it caused it to instantly throttle, even when the hottest it got was only 67c on the core and 71c on the hottest VRM.

Reading CPU-Z current readings are by no means accurate enough to allow proper monitoring of power consumption. You're going to want at least a kill-a-watt for that.
Edited by Fulvin - 6/7/13 at 2:51pm
post #15 of 25
Actually the readouts can be trusted if they are made on the same card, as in our case the Vapor-X.
Would you like to try? The differences will not be minor I'm quite sure about it.

Let's try, shall we?
1280x720 no MSAA in furmark

850MHz @ 1.087V (default) + 1250MHz mem @ 1.5V
14.0A "current in" measured after about 30 seconds
post #16 of 25
I think I have my boost bios active as my current values keep fluctuating and going all over the place. I don't have time to mess around with this now. IIRC, the vcore keeps fluctuating no matter which bios I'm on.

I'm pretty sure, seeing as you have the older 6+8 pin version, that there has been a update on the components, cooling, PCB design or something. BIOS has changed for sure, plus my memory runs at 1.6V stock, and the vram is locked.

My point being that the asic hardly plays any role in this difference we are seeing between our cards, but rather a design change.
post #17 of 25
Mine is stable at 1150/1450 @1.2v in Xfire with a MSI TF3. I use the non boost bios and it work perfect. The card is unlocked, VRMs are fine and there isnt a core flicker.
post #18 of 25
Thread Starter 
@glina, So if I understood properly in both BIOS your mem voltage is 1.5 V. So at default voltage you are getting 1750 MHz mem clock! If it's 100% stable than this is one incredible card you've got in terms of mem OCing. I wonder if the new cards memory clock will OC that much in stock voltage if it's reduced to 1.25 V as u said.

Also it's kinda strange that BIOS1(850 MHz) stock core voltage is greater than that of BIOS2(950 MHz) in your card, as u said 1.137V vs 1.087V. That's also the reason I guess why you can OC further with BIOS1 than BIOS2 in stock voltage. Cuz BIOS1's stock voltage is BIOS2's over-voltage. RIght?

What was your maximum core clock OC with BIOS1 in stock voltage?
PC
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570k ASRock Z77 Extreme4 Sapphire HD 7970 OC with boost G.SKILL TridentX 2400 Mhz - CL10 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 pro Western Digital Cavier Blue ASUS DVD-R/DVD-RW drive Cooler Master Hyper 212X 
OSMonitorKeyboardPower
Windows 7 Ultimate Edition 64-bit  Samsung S24F350FHW G.Skill RIPJAWS KM570 MX Cooler Master V550 – semi-modular 
CaseMouseAudioAudio
CM 690 III Logitech G102 Prodigy Realtek ALC 898 Sennheiser HD 558 
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PC
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570k ASRock Z77 Extreme4 Sapphire HD 7970 OC with boost G.SKILL TridentX 2400 Mhz - CL10 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 pro Western Digital Cavier Blue ASUS DVD-R/DVD-RW drive Cooler Master Hyper 212X 
OSMonitorKeyboardPower
Windows 7 Ultimate Edition 64-bit  Samsung S24F350FHW G.Skill RIPJAWS KM570 MX Cooler Master V550 – semi-modular 
CaseMouseAudioAudio
CM 690 III Logitech G102 Prodigy Realtek ALC 898 Sennheiser HD 558 
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post #19 of 25
Quote:
Originally Posted by Driimit View Post

@glina, So if I understood properly in both BIOS your mem voltage is 1.5 V. So at default voltage you are getting 1750 MHz mem clock! If it's 100% stable than this is one incredible card you've got in terms of mem OCing. I wonder if the new cards memory clock will OC that much in stock voltage if it's reduced to 1.25 V as u said.

Also it's kinda strange that BIOS1(850 MHz) stock core voltage is greater than that of BIOS2(950 MHz) in your card, as u said 1.137V vs 1.087V. That's also the reason I guess why you can OC further with BIOS1 than BIOS2 in stock voltage. Cuz BIOS1's stock voltage is BIOS2's over-voltage. RIght?

What was your maximum core clock OC with BIOS1 in stock voltage?

Yes indeed. I get 1750-1800 MHz memory @ 1.5V.
I run 1700MHz daily.

and this is with 1.625V memory:
http://www.3dmark.com/3dm11/5813770

my best stable and artifact-free core overclock as well, but this is only for benchmark as i need to have the fan @ 100% to cool it and this is unbearable :-). I could probably make it go through 3dmark @ 1280/2050 with some artifacts.

Realistic daily core OC for me on air is 1150-1200MHz with only a little voltage bump.

with stock volts I got 1140MHz on BIOS1 and 1090MHz on BIOS2.

Recent cards run at 1.5V or 1.6V memory and 1.25V core voltage. You're very likely to get around 1150-1200MHz core and 1500MHz mem (Elpida chips) with either VaporX or DualX.
Edited by glina - 6/8/13 at 1:47pm
post #20 of 25
Thread Starter 
hmm okay.. Another thing suddenly coming to my mind. Is it actually the best time to buy a 7950? With 760 Ti coming within 2-3 weeks max, it will be something between 7950 and 7970 GHz edition because gtx 770 was right on par with the 7970 GHz. And considering Nvidia's very aggressive pricing that we saw in case of 770 that surprised most of the people(399$ retail from day 1) we should expect something similar for 760 Ti. Which will ultimately result in price drop for 660 Ti / 670 and hence for 7950 too. Because 660Ti /670 are 7950's real competitor placing it dangerously close between the two in terms of performance... So shouldn't I just wait for maybe one month to see how things go as 760 Ti gets released?

Now the facade against the above argument would be will the awesome AMD game bundle offer remain after 1 month? For those who want to sell the bundle can have a guaranteed 40$ by selling it in ebay. Also the 20$ Sapphire rebate program is supposed to end on 15 June. The rebate offer seems to get extended quite freely though, lol... Previously it was supposed to end on 31st May, I won't be surprised either if Sapphire extends it for further 15/30 days after June 15. However you can't be sure about these. So by buying a 7950 by 15 June, you are essentially saving yourself 40+20=60$.

So though it's a highly speculative question, what do you guys think ultimately would be the best strategy?
PC
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570k ASRock Z77 Extreme4 Sapphire HD 7970 OC with boost G.SKILL TridentX 2400 Mhz - CL10 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 pro Western Digital Cavier Blue ASUS DVD-R/DVD-RW drive Cooler Master Hyper 212X 
OSMonitorKeyboardPower
Windows 7 Ultimate Edition 64-bit  Samsung S24F350FHW G.Skill RIPJAWS KM570 MX Cooler Master V550 – semi-modular 
CaseMouseAudioAudio
CM 690 III Logitech G102 Prodigy Realtek ALC 898 Sennheiser HD 558 
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Reply
PC
(16 items)
 
  
CPUMotherboardGraphicsRAM
i5-3570k ASRock Z77 Extreme4 Sapphire HD 7970 OC with boost G.SKILL TridentX 2400 Mhz - CL10 
Hard DriveHard DriveOptical DriveCooling
Samsung 850 pro Western Digital Cavier Blue ASUS DVD-R/DVD-RW drive Cooler Master Hyper 212X 
OSMonitorKeyboardPower
Windows 7 Ultimate Edition 64-bit  Samsung S24F350FHW G.Skill RIPJAWS KM570 MX Cooler Master V550 – semi-modular 
CaseMouseAudioAudio
CM 690 III Logitech G102 Prodigy Realtek ALC 898 Sennheiser HD 558 
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