Monday, December 12th 2011

AMD Tahiti GPU Specifications Compiled

If the word on the optical fibers is true, we are less than a month away from the launch of AMD's next high-end graphics card family based on its next high-performance GPU, codenamed "Tahiti". According to 3DCenter, AMD will launch new graphics card models based on this GPU around January 10, 2012. It is expected that we'll learn a lot more about these GPUs, maybe even come across AIB-branded graphics cards, at the upcoming CES event.

3DCenter compiled specifications of "Tahiti", based on bits and pieces of information from various sources. The specs can be listed out as:
  • 4.50 billion transistors, die-area of 380 mm², built on TSMC 28 nm process
  • Advanced GCN 1D architecture
  • 2048 1D processing cores
  • 128 TMUs, 48 ROPs
  • 384-bit wide GDDR5 memory interface, memory clock slightly below 1 GHz, target bandwidth of 240~264 GB/s
In Gandhi's words, salt is as free as the air.Source: 3DCenter.org
Add your own comment

41 Comments on AMD Tahiti GPU Specifications Compiled

#1
pantherx12
I'll disregard all of this, how ever I'm interested to find out about the architecture changes if they have done it.
Posted on Reply
#2
enaher
Nice can't wait to see performance.
Posted on Reply
#5
Fishymachine
Is it me, or 240-264GBps can't be achieved with memory under 1250 GDDR5 on 384 bit?
Posted on Reply
#6
pantherx12
7 am in the morning is to late ( not slept yet) to have read that XD

Have to research more things now but am to tired.

Does sound very interesting though can't wait to see bench marks now, specifically open cl bench marks XD
Posted on Reply
#7
eidairaman1
Be crazy if they release a mid range tahiti model with the xdr2 or w/e or release a top model with 512 bit bus
Posted on Reply
#9
Anusha
by: Fishymachine
Is it me, or 240-264GBps can't be achieved with memory under 1250 GDDR5 on 384 bit?
you are so correct.
1250 (5000) x 256bit = 160GBps
1250 (5000) x 384bit = 240GBps
Posted on Reply
#10
Benetanegia
I don't know german but the chart is clear. It's the core clock at slightly below 1000 Mhz. Memory 2500-2750 Mhz effective.
Posted on Reply
#11
DannibusX
Do we subtract 800 million transistors off of the press release?
Posted on Reply
#12
Anusha
by: DannibusX
Do we subtract 800 million transistors off of the press release?
it all depends on how they perform against their current cards and the competition. XD
Posted on Reply
#13
nt300
I read somewhere we should expect 40% better performance with these new cards.
Posted on Reply
#14
Tenxu24
one question guys, if anyone knows anything about using amd 7900 the standard pcie 2.0 or 3.0?
Posted on Reply
#15
W1zzard
by: tenxu24
one question guys, if anyone knows anything about using amd 7900 the standard pcie 2.0 or 3.0?
3.0, which will have no impact on performance
Posted on Reply
#16
Fishymachine
another thing, isn't 2500/2750 GDDR3 exactly the 1200/1375 needed to reach the specked bandwidth, and very same frequencies used in the 6900 serie
Posted on Reply
#17
Anusha
by: nt300
I read somewhere we should expect 40% better performance with these new cards.
cannot expect anything more from the specs, can we?


by: Fishymachine
another thing, isn't 2500/2750 GDDR3 exactly the 1200/1375 needed to reach the specked bandwidth, and very same frequencies used in the 6900 serie
yep
Posted on Reply
#18
Drugsh
Upto 60% perfomance gain....single HD 7970 card could be faster than the dual GPU monster that is the HD 6990 :eek:
Posted on Reply
#19
DrunkenMafia
by: Drugsh
Upto 60% perfomance gain....single HD 7970 card could be faster than the dual GPU monster that is the HD 6990 :eek:
I highly doubt it but will have to wait and see.. :wtf:
Posted on Reply
#21
Tenxu24
by: W1zzard
3.0, which will have no impact on performance
Thank you. I wonder if anyone knows if the graphics card pcie 3.0 will be compatible with PCIe 2.0 motherboards? If so, you would lose the potential of graphics cards to put in a PCIe 2.0?
Posted on Reply
#23
W1zzard
by: Tenxu24
Thank you. I wonder if anyone knows if the graphics card pcie 3.0 will be compatible with PCIe 2.0 motherboards? If so, you would lose the potential of graphics cards to put in a PCIe 2.0?
it will run just as fast in a 2.0 slot.

in a 1.0 slot it will be a few percent slower, maybe 10% tops
Posted on Reply
#25
Lionheart
384-bit wide GDDR5 memory interface, memory clock slightly below 1 GHz, target bandwidth of 240~264 GB/s
That's slow for the memory even if it's 384-bit memory interface, I thought the core was supposed to be 1Ghz:wtf:
Posted on Reply
Add your own comment