Originally Posted by milanalden
hi, i am about to purchase my second 7970. my older 7970 is an XFX 7970 DD black and i purchased before GHZ was available. as GHZ is now available do the not as good chips get moved down to the normal 7970's in the binning process? i would like to get a black edition to save myself £30 but only if i am likely to hit 1050 speeds which my older 7970 can, i would like to avoid a chip that can barely go over 1000MHZ.
I Think everyone wants to avoid the boost cards.
I actually purchased a HIS 7970 ghz edition ICEQ or whatever the cooling system is called, and it would BARELY run stable at 1100 mhz (that's 50 mhz above default). 1125 mhz (remember this is on stock voltage of 1.256v) would ARTIFACT in Valley benchmark, with sparkly colored random splotches (never seen that on a 7970...they usually just VPU recover). And it was probably only stable at 1100 because the temp showed 68c on the GPU monitor, but the card itself was HOT, hot ,HOT. And fan was running at 100%....
And that's at 1.256v.
I'd hate to see if the card wouldn't even be stable at stock at a lower 1.12v or 1.175v or somethinig...
ASIC was either 64 or 66%.
Purchased a Diamond reference card with 77% ASIC which has a default 1.12v vid, which seems to be stable at 1125/1700 and 1.187v (possibly 1.175v, not sure, but issue seems to start around 80C), if you can keep the card cool. Would go higher but absolutely must find a way to keep it cool. And it works with all ther Trixx features, unlike al the other cards out there currently.
As far as I know, Diamond is the *ONLY* original reference card still available (identical to the old Sapphire reference boards), that's not on the "V2" version (that won't monitor VRM's or work with constant voltage in Trixx), and which should still work with the ghz bios AMD flasher upgrade or the standalone bios in the other thread.
(the visionitek reference card is the "newer" version which wont work with any of the older bioses or ghz bioses and wont show VRM temps).