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Questions after PowerColor HD 7990 Bricked after only about 30 mins of use.

post #1 of 6
Thread Starter 
Hello, I was wondering if anyone knew what would cause a HD 7990 overheat and brick with only about 30mins of gameplay?

Here is some background
I just received my brand new PowerColor AX7990 6GBD5-M4DHG Radeon HD 7990 two days ago from NewEgg. Yesterday I was working mainly on MS Office and I noticed that the temps were staying around 40c (from catalyst control center). I thought this was normal idle temps, so today I thought I would try the card out on BioShock Infinite. I played on ultra at 1080p for about 30 mins and just about made it through the tutorial; when I heard a series 3 or 4 pops, then my computer crashed and I started smelling this terrible burning smell. I immediately unplugged the PSU and opened the case, and found that card was EXTREMELY hot and was emanating a pungent smell. After cooling under some external fans for about an hour I plugged the computer back in and found that the power light would only flash and make a click and not even make it to BIOS. I swapped out cards back to my old HD 5670 and my computer was working just fine. Later I tried the card in another computer and that made that computer unbootable as well. I sent it for a RMA replacement and it should be here sometime next week.

So before my other card arrives I have a few questions:

1. After thinking about, I don't think I heard the fans blowing as hard as they should have been, so have you ever seen a diver fail to control the fans or something? Plus I thought GPUs would shut off before frying?

2. Do you think there is hardware issue with my computer that caused this burn out?

3. The card came with PCIe 6pin to 8pin converters, and my power supply as a 6 pin connector with a separate 2pin connector, Should i use the converter with just the 6-pin or. use the extra 2 pins on my powersupply?

4. Do you think that there is enough air flow within my NZXT Phantom ATX case? I have 1 front 140mm, 2 side 140mm plus a side 200mm, rear 140mm exhaust fan, and the top two 200mm exhausts:mad:.



Specs:
i7 2600k (stock cooler)
Asus P8P67
8GB of corsair Dominator GT RAM @ 1866MHz (with a ram cooler)
720GB 7200RPM HDD WD
Corsair CMPSU-750TX 750-Watt
NZXT Phantom ATX Full Tower
post #2 of 6
Send it back right away. No properly working card destroys itself like that.
Intel Killer
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Intel Killer
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post #3 of 6
Ya if it was properly working, it would have shut down or spun the fans 100% and throttled it self.
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Silent Dominator
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post #4 of 6
Quote:
Originally Posted by cwmabray View Post


3. The card came with PCIe 6pin to 8pin converters, and my power supply as a 6 pin connector with a separate 2pin connector, Should i use the converter with just the 6-pin or. use the extra 2 pins on my powersupply?

This question disturbs me. A lot.

You need BOTH 8-pin PCIe connectors connected to the 7990 to provide enough power to the card. That's accomplished by using both 6+2 pin connectors on your power supply. If you only plugged in the 6-pin part and left the 2-pin parts dangling, you probably blew your card up due to user error. The card will draw maximum power while gaming, and if you only had 12 of the 16 wires connected, well - you get the picture - Overload.

Don't use the converters, those are for old PSUs that don't have two 6+2 PCIe power cables available. No PSU has "8-pin" PCIe cables, they're all 6+2 because you can't plug a 8-pin PCIe cable into some video cards that require 6-pins due to clearance issues to the left/right of the connector.


Greg
post #5 of 6
Thread Starter 
Quote:
Originally Posted by hammong View Post

This question disturbs me. A lot.

You need BOTH 8-pin PCIe connectors connected to the 7990 to provide enough power to the card. That's accomplished by using both 6+2 pin connectors on your power supply. If you only plugged in the 6-pin part and left the 2-pin parts dangling, you probably blew your card up due to user error. The card will draw maximum power while gaming, and if you only had 12 of the 16 wires connected, well - you get the picture - Overload.

Don't use the converters, those are for old PSUs that don't have two 6+2 PCIe power cables available. No PSU has "8-pin" PCIe cables, they're all 6+2 because you can't plug a 8-pin PCIe cable into some video cards that require 6-pins due to clearance issues to the left/right of the connector.


Greg

Thanks for all the replies, but I did in fact have both 6+2 pci power connectors plugged securely into the card; the 2pins first then the 6pins locked them down. I just noticed the converters werein the box while checking to make sure every thing was in the box for the RMA. I was just wondering if the (6 to 8) converters would be preferable to the 6 + 2 config. So I guess I'll just stick with the 6+2 set up.
post #6 of 6
You did it right bro. Card was probably bad from the factory, maybe the heat sink didn't have any thermal compound over the GPU core, or wasn't tightened down properly. Don't monkey with it, it'll be a quick RMA swap I'm sure.

Greg
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