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**MSI HD 7950 TWIN FROZR BOOST DIODE PROBLEMS - IMPORTANT INFO!!**

Partly though closed back headphones, partly though not pushing my GPU much because of SCII and partly through ignorance I think I might have one of these original cards mentioned above that has the faulty diode issue (purchased on Feb 27th).

What I've seen some people say about this issue on forums is that the fans spin up to 100% constantly once it hits a certain temperature.
However what I have on mine is that it reaches about 58 degrees, revs up very quickly for a couple of seconds and then returns to normal for a couple of seconds before reving up again (I presume to bring itself back down below a certain temp).

Can I ask if what I've described 'is' the issue or is the diode problem only present when the fans rev up to 100% for prolonged periods of time?

I've spoken to the returns team and they've provided me with an RMA form, but would like to 100% know that I have a problem before actually sending it.
Any help/experience on the matter would be greatly appreciated!

Thanks!
 
Barnold said:
However what I have on mine is that it reaches about 58 degrees, revs up very quickly for a couple of seconds and then returns to normal for a couple of seconds before reving up again (I presume to bring itself back down below a certain temp).
Click to expand...

your is one of the bad ones, you should replace it... this is the problem with the diode.. if it gets 60C+ the fan goes 100%... when it drops below 60C the fans go back to the normal speed.

I have 2 of this cards working now.. but took me 6 cards to get 2 perfect ones... 2 came dead, 1 was artifacting and another one the bios switch was broken.
 
Damn, thanks for the clarification!
The annoying thing now is that it looks like that I have to pay to mail the product back when it is already know by the company to be faulty. Thought there should have been some sort of recall or to be able to charge MSI for returns costs with their products. Guessing you've had to do it 4 times now! Not very fair on the consumer tbh.

Is there not a way for OC to check the replacement card before it's sent to me?
 
Bought one of these cards the other day, arrived and after a blue screen due to a dying OC'd CPU, I was getting 100% fan past POST on BIOS and such. I turned it on and off a few times, it kept doing it and then I came back 30 mins later and it was fine.

I have done a burn in test and gamed some more, nothing. Perhaps just how the card reacts when the system dies unexpectedly.

If it is fine, I'm very, very happy with this card, it's unbelievably quiet! I compare it to my old ASUS 560Ti Direct CUII and it's about the same as it idling when gaming at 60-70 degrees.
 
Considering I sent my GPU back 2 weeks ago now I gotta say that I’m pretty disappointed to have not heard anything back from anyone (I presume MSI as that’s where it was sent).
Seeing at this is such a well-known issue I thought MSI and/or OC would have had something in place to quickly replace the known to be broken cards.
My Steam library has only gotten bigger and am really itching to get back to PC gaming again!

And @Razyre, if it’s continued to be fine and without the fans going mental at around 60degrees then I’d say it’s fine. Might have been a blip with the boot process from the CPU/MB not telling the card to stop the 100% fan speed boot up sequence rather than it being an issue with the card itself (that or the card was at 75degrees+ and the thermal diode was working correctly and trying to cool itself down, thus the 30minutes made it work correctly again due to cooling.)
 
did you post it directly to MSI?
I thought OCUK were telling people to send them straight to OCUK and they were swapping them out directly - that's what the OP suggested anyway
 
I sent it to OCUK, who then confirmed that it did have the faulty 100% fan speed issue and confirmed that they had sent it back to MSI.
Not sure if it was because it was past the 28days of initial purchases that they needed to do it, but still, if MSI know that the entire batch of cards weren't working, to the extent that they need to put **New Revision** on web sites to show that it doesn't have the issue, then I would expect to have a relatively quick turnaround as it shouldn't be a shock to them that it's happened.
 
Annoyingly yes. I purchased the GPU a few weeks before the rest of the system as OCUK had it on a special daily deal at the time and seeing as I had already decided that it was the one I was going to buy I thought why not get it early and a bit cheaper. So by the time I put the rig together and realised it was an issue the 28 days were already up :(
 
Recently the Boost BIOS hasn't been great either, shame that MSI's 7950 had so many failures as it was the 1st time I tried MSI...
 
Hi LtMatt.
For me it's been 2 weeks now. OCUK did say that it could take 'up to' 28 days, so can't officially complain, though am doing so a little bit here to see if I can get it hurried up.
As stated above, the fact that this is a known issue for these cards, to the extent that OCUK now promote that the cards they're selling don't have this issue, makes me think that some form of quick/convenient contingency would have been put in place to replace the cards they already know to be faulty. Not great fore-planning it seems from MSI.

@IC3, to what Boost BIOS issues are you referring to? The Boost BIOS being voltage locked?
 
@Barnold, BOOST bios no matter what you do keeps the voltage 1.25v and only gives you 75mhz, also the boost is the pain in the backside while you play a game and boost starts to jump the drops in framerates are terrific... But the solution to this is turn on msi ab and tick constant voltage so you dont get the jumps. But you have to turn it off when you stop playing because the voltage stays 1.25v...
I tried quite a few BIOSes on my 7950 IceQ and none worked, tried it trough windows and DOS. But the card overall is briliant for the price, my card limit is 1200/1600 and safe clocks for 24/7 1100/1500 ;]

EDIT:
I wrote to HIS about these problems and if they could give a BIOS that would work on my card. But HIS takes up to 7 days to reply...
 
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IC3 said:
@Barnold, BOOST bios no matter what you do keeps the voltage 1.25v and only gives you 75mhz, also the boost is the pain in the backside while you play a game and boost starts to jump the drops in framerates are terrific... But the solution to this is turn on msi ab and tick constant voltage so you dont get the jumps. But you have to turn it off when you stop playing because the voltage stays 1.25v...
I tried quite a few BIOSes on my 7950 IceQ and none worked, tried it trough windows and DOS. But the card overall is briliant for the price, my card limit is 1200/1600 and safe clocks for 24/7 1100/1500 ;]

EDIT:
I wrote to HIS about these problems and if they could give a BIOS that would work on my card. But HIS take up to 7 days to reply...
Click to expand...

Can you run 1600 on the memory at stock volts or do you have to increase the memory voltage?
 
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