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Club3D HD 7870 jokerCard Tahiti LE 2048 MB

brandonwh64

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#26

eidairaman1

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#27
Nice Card I say- they should of however called it the 7875/7880/7885/7890 honestly and made it crossfire capable with Pictarin parts
 
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#28
Display connectivity options include one DVI port, one full-sized HDMI port, and two mini-HDMI ports. You may use all the outputs at the same time.
I'm pretty sure those are mini-Displayports.
Mini-HDMI, combined with the ability to use them all at the same time, would need an additional converter chip.
 

W1zzard

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#29
I'm pretty sure those are mini-Displayports.
Mini-HDMI, combined with the ability to use them all at the same time, would need an additional converter chip.
typo. thanks
 
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#30
Nice review. But we get used to it :D

But what iterests me the most, aside that 175W power consumption that is what i expect from reject die with boost clock and voltage, is this line

AMD's Tahiti graphics processor introduced the GCN shader architecture. It is also the first GPU to be produced on a 28 nm process at TSMC. The transistor count is 4.31 billion.

Please note that the package of the GPU is completely different to that of the regular Tahiti GPU. Regular Tahiti has a bigger substrate (green stuff), and the metal shim extends much closer to the GPU die. The Tahiti LE also has laser-etched writing on the die, while regular Tahiti GPUs are completely clean.
So as chip die size doesnt match as you mentioned, coul we guesstimate thta this aint real Tahiti rejects but instead full blow new chip that is just branded by web/OEMs as TahitiLE??

Is this monster still support Double Precision and all GCN features as heir bigger sibling HD7900? I presume yes as you said that Crossfire was possible with those cards.

But is it really so easy just to cut of 128b MC plus some additional stuff from die as most of chip defects are quite irregular, and laser cutting of a defect on a die is impossible if its needed for shrinking purposes

So is this some brand new Tahiti redesign neede to fortify AMDs fighting ground on mainstream segment? And thats why we see such a huge power increase because its brand new cheap shrinkup redesign of an old architecture?

And could we expect rumored new HD8800 series at all in next few month?
 

Malicki

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#32
I think it would be worth noting that the 7870 Tahiti can be crossfired with the 7900 series cards, as tested on, I believe Toms or Anand's. So it could provide a, somewhat cheaper, oppurtunity for someone to run their 7900's in crossfire... I guess. :)