aaksheytalwar
Diamond Member
- Feb 17, 2012
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In that 670 TT thread there was mention of the 670 using a lot more power than the 680 (although TT's methodology was questioned and at 16 pages I never read the whole thread so maybe there was an explanation for those power figures). So, it seems Nvdia may have done some serious binning for the 680 (and the 690), but if that 670 is indicative of all the 670s, those chips which failed to make it as a 680 use a lot more power.
So process improvements even and binning could make a major difference to power usage. (I'd really love someone with knowledge, like IDC, to shed some light on that.)
Anyway, it seemed to me that AMD could find some 1200MHz Tahiti cores which don't use massive amounts of power and actually officially release them and it looks like that's what they are doing.
Also, I still think Pitcairn is a better balanced chip since (almost) nobody wants to pay for compute and a well binned 1200MHz part maybe coupled with faster memory or even some other minor re-spin might make a lot more sense for AMD rather than being forced to sell Tahiti chips cheaply.
The sample of the 680 that TT received through their clandestine supplieralso wasn't particularly efficient. It used 67W more power at load and a whopping 79W more power while idling than the reference 7970. Not sure what the deal is? Their idle ratings are all ove the place. The only explanation I can come up with is they don't know how to measure power usage.
http://australia.tweaktown.com/revi...reference_card_video_card_review/index17.html
You guys are basically saying that you're willing to pay someone else to overclock for you. There is no fun in that imo plus it costs more.
Ghz edition 7970 are 1250Mhz stock core, faster than 680 OC even at stock.
Anyway, when are they releasing? Price?
1GHz is not enough to beat a stock 680. It might be enough to beat a 670. Have you thought about that?
I love your optimism.
I'd figure the GHz Ed for 500$. And north of 400 for the 7950.
Both cards are worth the money, imo. Its a wash. If I played BF3 (like most of my friends do) I'd have bought the 680.
I just want the sapphire toxic already!!
"Overall this looks to be another solid win from Kepler, which is simply a more efficient architecture than the competing AMD 'Southern Islands' at the heart of the HD 7970 and 7950
You sure seem to know all the answers for a guy that doesn't even HAVE a 7970, eh?
ANY Sapphire 7970 OC Edition owner is GUARANTEED to get a core overclock WELL IN EXCESS of 1100 Mhz.
Flipping the bios switch starts you at 1000 Mhz core....u can raise it to at least 1125 core with no voltage, most 1150 Mhz.
ADD some voltage thru Afterburner or Trixx and 1200- 1300 Mhz is attainable.
FROM AN OWNER, not a bullshitter.
I ran 3dmark2k11 at stock 2.8 Ghz cpu, 1200/1600 on the 7970 (although it reported 2.9 Ghz cpu and 150/300 for my gpu)
http://3dmark.com/3dm11/3346770
I ran it with Morphological filtering on, enhance application setting, 16X AF, enable surface format optimization, quality vertical refresh, super sampling 4X AA, Triple buffering Open GL NOT IN PERFORMANCE MODE in ccc. (Same settings I game at in any game)
You cannot base the unpredictable and unreliable metric that is overclocking potential from your single, personal account and apply it to the entire production run of the product in question, that's a logical fallacy. A sample size of one does not a conclusion make - so much for not being the bullshitter.
