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PowerColor Radeon 7870 Tahiti LE Myst Edition Overclock

Tags:
  • Overclocking
  • Overdrive
  • PowerColor
  • Graphics
Last response: in Graphics & Displays
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June 20, 2013 12:38:01 PM

Trying to overclock it. I've been using the AMD Overdrive Section in the Catalyst Manager. It says I can crank it up to 1425, and the RAM to 2000 MHz. But whenever I do, a bunch of lines appears on the screen and it goes blue. I have to restart and lower the settings. I know that I can get it up to 1270 and it won't do that. But I'm wondering why I can't go higher. I'm using an i5-3350P, overclocked to 3.5 GHz on an ASRock Pro3 z77 board. The card is in the PCIe 2.0 slot b/c I had trouble with the 3.0 slot.

Is it a bandwith problem, or can my system just not handle it?

On a sidenote, when I tried to use MSI Afterburner I couldn't go past 1270, even if Overdrive was set higher.

More about : powercolor radeon 7870 tahiti myst edition overclock

June 20, 2013 12:43:36 PM

Some cards are just not good overclockers and they are unstable at high clocks, for example people said in reviews that the 6950 Direct CU2 is a great overclocker and people pushed it past 950 MHz but my 6950 won't even get past 870MHZ without getting a blue screen.
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June 20, 2013 1:46:56 PM

jcol87 said:
Trying to overclock it. I've been using the AMD Overdrive Section in the Catalyst Manager. It says I can crank it up to 1425, and the RAM to 2000 MHz. But whenever I do, a bunch of lines appears on the screen and it goes blue. I have to restart and lower the settings. I know that I can get it up to 1270 and it won't do that. But I'm wondering why I can't go higher. I'm using an i5-3350P, overclocked to 3.5 GHz on an ASRock Pro3 z77 board. The card is in the PCIe 2.0 slot b/c I had trouble with the 3.0 slot.

Is it a bandwith problem, or can my system just not handle it?



On a sidenote, when I tried to use MSI Afterburner I couldn't go past 1270, even if Overdrive was set higher.


I have the same card and mine does not OC very well. My card get way to hot. I have it under clocked to keep it cool and it runs just fine. There is no game out that it cant play at stock at 1080p at high/ultra settings.
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June 24, 2013 3:24:31 PM

jcol87 said:
Trying to overclock it. I've been using the AMD Overdrive Section in the Catalyst Manager. It says I can crank it up to 1425, and the RAM to 2000 MHz. But whenever I do, a bunch of lines appears on the screen and it goes blue. I have to restart and lower the settings. I know that I can get it up to 1270 and it won't do that. But I'm wondering why I can't go higher. I'm using an i5-3350P, overclocked to 3.5 GHz on an ASRock Pro3 z77 board. The card is in the PCIe 2.0 slot b/c I had trouble with the 3.0 slot.

Is it a bandwith problem, or can my system just not handle it?

On a sidenote, when I tried to use MSI Afterburner I couldn't go past 1270, even if Overdrive was set higher.


NO NO NO, just because the overclocking utility will allow you to crank the core and memory up that high doesn't mean the card will actually run at those values. Dude no wonder your system is bugging out. Re set to defaults before you end up with a $250 paper weight ! FYI 1200 core 1600 memory +20% power limit is considered to be a very respectable overclock.
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April 2, 2014 3:39:30 PM

yes clearly i am a noob, and the oc worked very well, it actually turned out that my CPU was bottlenecking somewhat, not the cpu itself but the cache, im thinking of upgrading to i7
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