XFX R9 290 Overclocking issues

[JukuriH]

So, I just got my XFX R9 290 DD OC Black Edition about 2 weeks ago, and I wanted to overclock it to get most of it, but my problem is that it just lowers my fps in most games. In CS:GO I get 279-299fps when capped @ 300fps, but when I overclock my GPU (and stress test it with Heaven) the fps goes almost below 200 for split second, but average is about 249-289fps. I overclock using some guides, 10Mhz to core clock and 20Mhz to memory clock at a time, also higher the voltage when I see unstability. But I still got 3 BSOD's in 3 days, so I decided to reinstall & resetted overclocks drivers which fixed that problem. But I still don't know how my GPU performance just goes worse when overclocked? My PSU is Corsair RM850 (850W), CPU is Intel i5-4690K which is 2 weeks "old" also & with Corsair H80i, Corsair Vengeance 8Gb 1600Mhz RAM, Gigabyte Z97M-D3H motherboard and Kingston V300 120Gb SSD for Windows 7 and all programs, going to get a 240Gb SSD for RAID soon.

[AlwaysFSX]

Maybe your gpu just can't overclock further? That's entirely possible.

[Gala]

Because its already overclocked to the max, overclocking further causes throttling because it protects itself by slowing it down.

[JukuriH]

Maybe your gpu just can't overclock further? That's entirely possible.

 

That would be really sad if it's true, should I RMA my GPU then to get a new one which could be overclocked? I have seen people getting 100Mhz oc on core clock and 300-400Mhz oc on memory clock, but mine just slows down when increasing any of those.

[AlwaysFSX]

That would be really sad if it's true, should I RMA my GPU then to get a new one which could be overclocked? I have seen people getting 100Mhz oc on core clock and 300-400Mhz oc on memory clock, but mine just slows down when increasing any of those.

Nope, because that's not a "problem" that's covered by warranty. Just because it can't go farther than factory clocks doesn't mean it's defective.

[JukuriH]

Because its already overclocked to the max, overclocking further causes throttling because it protects itself by slowing it down.

 

But I thought that AMD GPUs slows down at 90-95 degrees? Mine goes 70-75 while gaming and 78-80 while bitmining.

[Wano97]

But I thought that AMD GPUs slows down at 90-95 degrees? Mine goes 70-75 while gaming and 78-80 while bitmining.

You can't rma a product because it doesn't overclock

[Priller]

Test the card at stock settings and see if the card fails. I've never seen a card that wont go above the stock clock atleast some unless the card was bad. 

 

Put it into a Heaven loop, if it doesnt fail then the card is most likely fine.

[JukuriH]

Test the card at stock settings and see if the card fails. I've never seen a card that wont go above the stock clock atleast some unless the card was bad. 

 

Put it into a Heaven loop, if it doesnt fail then the card is most likely fine.

 

Put my GPU into loop to repeat the Heaven benchmark for about 4 times, max temp was 76 degrees and I saw no issues.

[Priller]

Put my GPU into loop to repeat the Heaven benchmark for about 4 times, max temp was 76 degrees and I saw no issues.

 

Bump the GPU freq by 10mhz and try again. Leave memory speed at stock and keep going up until it fails in Heaven.

[JukuriH]

Bump the GPU freq by 10mhz and try again. Leave memory speed at stock and keep going up until it fails in Heaven.

 

It let me put core clock to 1050Mhz until drivers crashed. After few hours of gaming I was watching livestream and was trying to start bitmining but got BSOD. Not first time when I overclock my GPU.. anyone know what causes GPU overclock to give BSOD?