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NVIDIA G80 specifications leaked?
05-Oct-2006, 17:35.29 Reporter : Uttar
DailyTech has leaked apparently reliable specifications for NVIDIA's
upcoming G80. They claim it will be hard launched in the second week of
November and that the initial line up consists of the GeForce 8800GTX
and the GeForce 8800GTS. Both cards are apparently based on an unified
design, with the full chip consisting of 128 "stream processors", while
the GTS will have only 96 enabled for yield reasons. The information
further confirms other tidbits originally revealed by some
this made the front page of beyond3d.com
http://beyond3d.com/#news34328
_________________________________________________________________________
NVIDIA G80 specifications leaked?
05-Oct-2006, 17:35.29 Reporter : Uttar
leaked chinese powerpoint slides, including a 384-bit memory bus for
the GTX and a 320-bit memory bus for the GTS, with 768 and 640MB of
video memory for the two SKUs.
The specifications also claim that the unified stream processors are
clocked at 1.35GHz for the GTX and 1.2GHz for the GTS, while the
control logic, schedulers, ROPs, etc. are clocked at 575MHz and 500MHz
for the GTX and the GTS, respectively. Other DailyTech news pieces
published today reveal power requirements of 400W to 450W for a
G80-based system, and 800W for one based on SLI G80s. As always, these
numbers tend to be highly exaggerated in order to reduce potential
problems with subpar OEM PSUs. Other related articles claim FP32 HDR
and 16x AA support, both of which have been hinted at in the past, and
the former actually being a requirement for D3D10. To be more precise,
FP32 blending is a requirement, while FP32 filtering is optional. A
fourth article on the site also speaks of NVIDIA's "Quantum Physics"
engine, which is most likely a marketing name for the better
acceleration G80 delivers to physics computations.
It should also be noted that DailyTech lists some rather unlikely
numbers in terms of memory clocks and texture rate. They list the GTX
as having 86GB/s of bandwidth, and the GTS only 64GB/s. However, they
also claim both have 900MHz GDDR3, which is highly unlikely. It should
be relatively clear that this was a simple typo, and that the GTS
actually sports 800MHz GDDR3. As for texture rates, they give the
number of 38.4GPixels/s for the GTX, but few logical ways exist to
attain such a number with the specified clockrates. As such, it seems
much more likely that this part of the specification relates to the
GeForce 8800GTS and its 1200MHz stream processors.
__________________________________________________________________________
05-Oct-2006, 17:35.29 Reporter : Uttar
DailyTech has leaked apparently reliable specifications for NVIDIA's
upcoming G80. They claim it will be hard launched in the second week of
November and that the initial line up consists of the GeForce 8800GTX
and the GeForce 8800GTS. Both cards are apparently based on an unified
design, with the full chip consisting of 128 "stream processors", while
the GTS will have only 96 enabled for yield reasons. The information
further confirms other tidbits originally revealed by some
this made the front page of beyond3d.com
http://beyond3d.com/#news34328
_________________________________________________________________________
NVIDIA G80 specifications leaked?
05-Oct-2006, 17:35.29 Reporter : Uttar
leaked chinese powerpoint slides, including a 384-bit memory bus for
the GTX and a 320-bit memory bus for the GTS, with 768 and 640MB of
video memory for the two SKUs.
The specifications also claim that the unified stream processors are
clocked at 1.35GHz for the GTX and 1.2GHz for the GTS, while the
control logic, schedulers, ROPs, etc. are clocked at 575MHz and 500MHz
for the GTX and the GTS, respectively. Other DailyTech news pieces
published today reveal power requirements of 400W to 450W for a
G80-based system, and 800W for one based on SLI G80s. As always, these
numbers tend to be highly exaggerated in order to reduce potential
problems with subpar OEM PSUs. Other related articles claim FP32 HDR
and 16x AA support, both of which have been hinted at in the past, and
the former actually being a requirement for D3D10. To be more precise,
FP32 blending is a requirement, while FP32 filtering is optional. A
fourth article on the site also speaks of NVIDIA's "Quantum Physics"
engine, which is most likely a marketing name for the better
acceleration G80 delivers to physics computations.
It should also be noted that DailyTech lists some rather unlikely
numbers in terms of memory clocks and texture rate. They list the GTX
as having 86GB/s of bandwidth, and the GTS only 64GB/s. However, they
also claim both have 900MHz GDDR3, which is highly unlikely. It should
be relatively clear that this was a simple typo, and that the GTS
actually sports 800MHz GDDR3. As for texture rates, they give the
number of 38.4GPixels/s for the GTX, but few logical ways exist to
attain such a number with the specified clockrates. As such, it seems
much more likely that this part of the specification relates to the
GeForce 8800GTS and its 1200MHz stream processors.
__________________________________________________________________________