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From: NV55 on 12 Jun 2008 14:59
Geforce GTX 280 final specs
Written by Fuad Abazovic
Wednesday, 11 June 2008 09:06


1.4 billion transistors and 240 cores

We managed to get the final Geforce GTX 280 details, and most of the
stuff that we've reported over the last few months turned to be true.

Codenamed GT200, the GTX 280 GPU developed in 65nm process and has 1.4
billion transistors clocked at 602MHz. The processor clock, something
that we use to call Shaders, works at 1296MHz and Nvidia's new chip
has impressive 240 cores.

The GTX 280 card uses GDDR3 memory with 512-bit memory interface
clocked to 1107MHz (2214MHz). The card has 141.7GB/s bandwidth and it
comes with a total of 1GB memory.

The GT200 chip has 32 ROPs, 80 texture filtering units, 48.2
Gigatexels/sec texture filtering rate. The card supports HDCP, and
HDVI via DVI to HDMI adapter and comes with two dual link DVI-I and a
single HDTV out.

Ramdac is set to 400MHz, and the card itself is dual-slot with PCIe
2.0 interface and has one 8-pin and one 6-pin power connector. So, now
you know.

http://www.fudzilla.com/index.php?option=com_content&task=view&id=7830&Itemid=1



From: NV55 on 12 Jun 2008 15:45
So Nvidia has once again doubled the amount of transistors.

Yet, although GT200 / GTX 280 is a new GPU compared to G80 & G92, it
is not a totally new generation architecture. GT200 / GTX 280 can be
concidered the first true refresh-upgrade GPU from G80. Everything
else has been almost the same chip-wise, from 8800 to 9800 GX2, and
actually some downgrades because G80 had a 384-bit bus while G92 had
a 256-bit bus.

GT200 / GTX 280 is probably the biggest refresh-upgrade ever without
actually moving to a new generation architecture, since GT200 is DX10/
Shader Model 4, like G80 was in 2006.

I have a reason for not counting chips like Riva 128 ZX (1997) and
G92 (2007)


transistor-count leaps

1995
(first gen) NV1 / Diamond EDGE 3D - 200k transistors (for 3D
component)

1997
(new gen) NV3 / Riva 128 - 3.5 million

1998
(new gen) NV4 / TNT - 7 million

1999
(refresh) NV5 / TNT2 - 10 million

1999
(new gen) NV10 / GeForce256 - 23 million

2000
(refresh) NV15 / GeForce 2 GTS - 25 million

2001
(new gen) NV20 / GeForce 3 - 57 million

2002
(refresh) NV25 / GeForce 4 Ti - 63 million

2003
(new gen) NV30 / GeForce FX (5800) - 125 million

2003
(refresh) NV35 / GeForce FX (5900) - 130 million

2004
(new gen) NV40 / GeForce 6800 - 222 million

2005
(major overhaul but not entirely new gen)
NV47 / G70 / GeForce 7800 - 300 million

2006
(new gen, DX10) G80 / GeForce 8800 - 680 million

2008
(major upgrade but not entirely new gen, still DX10)
GT200 / GeForce GTX 280 - 1400 million


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