* * * POST Your GPU ASIC Quality Thread

[drogon]

 

[nitram100]

coming soon to the members market on gfx card sales, ASIC QUALITY!!!

 

[panyan]

Seems on a par wth WEI

+1 !!!

 

[N00bbuilder79]

Seems on a par wth WEI

+1

65.4% on an EVGA GTX 580 3Gb card.

 

[Lunawolfy]

Thread tl;dr

Has anyone figured out what the numbers mean?

I got 65% and 85% on my GTX 580s with them able to reach 990 and 910 cores respectively.

So if a higher percentage means cleaner voltage delivery, why is my duffer card a far superior clocker?

 

[rolypolyman]

Msi 470GTX @stock 0.875v = 76% ASIC. This card has been O\C up to an easy 870 on the core @ 1.075v but has always run at stock otherwise.

 

[ajones32]

Function not supported on my 6970 Lightning's

 

[mmj_uk]

I got 65% and 85% on my GTX 580s with them able to reach 990 and 910 cores respectively.

So if a higher percentage means cleaner voltage delivery, why is my duffer card a far superior clocker?

That's what's confusing, it seems the best cards are the ones with a lower 'ASIC quality'.

Perhaps NVidia are handpicking the best GPU's and marking them with a higher stock VID for intended use in the pre-overclocked/custom cooled cards, therefore GPU-Z reads the higher VID and sees it as a poorer quality GPU when the opposite is the case. I'm just speculating though.

I doubt it's a random number generator but whatever algorithm they're using I doubt it means much either.

 

[Daze]

72.9% on my MSI GTX570 Twin Frozr III. Should I be worried? lol

 

[N00bbuilder79]

Not as worried as me with 65.4% on my card. Strange really as mine is a decent clocker.

 

[Frenzy]

Well I think I have an answer for what this does, take from http://www.techpowerup.com/forums/showthread.php?p=2524612

It represents the arbitrary number Nvidia or ATI assign a die based on its location and performance figure they are trying to target. Just like it was said before a lower number should have higher leakage, but may also mean a closer to the edge die cut. If everything else were equal a number such as 85% should yield a balance between leakage so you can throw more voltage at it and non faulty transistors from die defects.

Another link talking about the same thing

http://www.evga.com/forums/tm.aspx?m=1423358&mpage=1

The next new feature is ASIC quality, designed for NVIDIA Fermi (GF10x and GF11x GPUs) and AMD Southern Islands (HD 7800 series and above), aimed at advanced users, hardware manufacturers, and the likes. We've found the ways in which AMD and NVIDIA segregate their freshly-made GPU ASICs based on the electrical leakages the chips produce (to increase yield by allotting them in different SKUs and performance bins), and we've found ways in which ASIC quality can be quantified and displayed. Find this feature in the context menu of GPU-Z. We're working on implementing this feature on older AMD Radeon GPUs

They seem to think it is related to vcore, look here http://www.evga.com/forums/fb.ashx?m=1428197

I have 0.9630V on my 90.9% ASIC GTX 580 on my home pc.

 

[mufc802]

115.1% here MSI GTX 560ti Twin Frozr.

 

[jonnylaris]

Mine is a crap overclocker, I can only get 800mhz if I put the volts right up to 1.1, I gotta send it back for RMA anyway due to the bearings gone in the fans.

 

[gurusan]

So is there actually a link between this ASIC quality and overclocking?

 

[{SAS}TB]

So is there actually a link between this ASIC quality and overclocking?

I doubt it

 

[Frenzy]

I think it's just how close to the center of the wafer the chip was.. I think... no one really knows. Even EVGA and techpowerup don't have a clue as shown in those links.

 

[Jakus]

102.6 % on a 570 here and it's consistent whatever it is, seems the 570's read higher than most, maybe as they are underutilized failed 580 cores ?

 

[shadow_boxer]

Very pointless tool. Doesn't seem to mean anything at all. WEI all over again by the looks of it. The better clocking cards seem to have a lower score? Even the developers seem to be rather clueless.

 

[mmj_uk]

I think it's just how close to the center of the wafer the chip was.. I think... no one really knows. Even EVGA and techpowerup don't have a clue as shown in those links.

They can't know where in the wafer it was just through software detection though and even if they could why would GTX 570 all be the centre of the wafer and GTX580 not?

I think all that's happening is that the GPU-Z devs have decided on a benchmark voltage for each model (that they've presumably chosen by inspecting a range of cards) and they simply compare the VID of each GPU to that benchmark to get a percentage.

GTX 570 probably scores highly because they're effectively just downclocked GTX580's and most likely all have a similarly low voltage.

 

[jamesg28]

GTX 560 ti 448