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* * * POST Your GPU ASIC Quality Thread

Guest2 said:
Isnt that right then? The lower % ones clock better on air, the higher % ones clock better on water / take more voltage.

(in theory anyway)
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according to GPU-Z it's the other way round -
low % = good on water (with higher voltage)
high % = good on air (with lower voltage)

GTX 6** makes this whole argument a bit moot however as they are locked to 1.175v max (apart from the bios mod to 1.21v which some of us are running)
 
Rroff said:
In terms of the overclocking abilities and how well they respond to voltage or what level of cooling your using seems very hit and miss I don't think the number fully represents the characteristics of the materials to a high enough level to be a reliable indication there.
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+1

a low % if it came from across the whole chip might mean higher voltage could allow for higher clocks... however you might have a chip that is just really really crap at one point which drags the average of the chip down, so regardless of how much voltage you try to push, the weak spot on the chip means it will clock bad regardless

or vice versa - the one bad spot might not be picked up by this average at all so you get 99% but still have a bad clocker on air

the makers of GPU-Z have obviously done some collecting of data to come up with the assertion they have - but at the end of the day (other than it getting dark), it's still partly random as to wether you get a good clocker or not
 
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VTX3D Edition X 7970 1050/1425 stock clocks

84.2% Asic quality. Won't go stable increasing the clocks any higher and running kombuster, also card goes to 83-90c at stock running torture gpu tests. 40c idle and avg 70c gaming.

Though I've not tried 1.2v etc since I'm psu limited and it will cut out, so can't say if higher volts would make a 1200 core clock stable. I have managed to run heaven benchmark at this clock, but it's unstable and psu won't allow further volt increases to test for stability. Considering the temps also I doubt I would want to push it for stability as well.

Though considering these 7970s were 925 ref clocked I guess it's better than nothing.
 
My GB 670 95.4

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By gweal at 2012-08-22
 
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62.4% 7970 lightning had 1300mhz at 1.287v, think it could manage 1330mhz+ once it's under water and can use the full 1.35v.

I'm with the majority on this, doesn't seem to represent anything.
 
shouldnt 100% be impossible? they dont know if their calculations are correct anyway and a lot of its guesswork?

surely all 7970s should be better than 7950s
all 7870s should be better than 7850's etc
 
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