Countering the mid-high range segment (USD$ 350) of graphics
card market the 7900GT GPUs from NVIDIA is domineering, ATi has decided to
fill this void with a new rendition of the ATi R580 chipset. Thus gave birth
to the Radeon X1900GT :

logo2 First ATi X1900GT Benchmarks

Picture from HKEPC

The original plan seemed to be relying on the rumoured X1900XL
to counter the 7900GT. This seemed to be aborted last minute due to un-ideal
yield of the R580. From there, the X1900GTO was scheduled to be the replacement.
The speculated model name was recently changed to X1900GT, and this caused
some confusion among the speculators. The reason for the change of name seemed
to be for consumers to distinguish the price-point plane with regards to the
competition easily. From the tests conducted by HKEPC, the X1900GT beats the
7900GT in 3D Mark 05 and 06 but loses out in 3D Mark 03. In Game Tests, the
X1900GT leads in Half Life 2 and BattleField 2 but lags behind in FEAR, Doom
3, Splinter Cell and Serious Sam 2. It seems that the 7900GT is still the overall
winner in terms of gaming.

Countering the mid-high range segment (USD$ 350) of graphics
card market the 7900GT GPUs from NVIDIA is domineering , ATi has decided to
fill this void with a new rendition of the ATi R580 chipset. Thus gave birth
to the Radeon X1900GT :

oc First ATi X1900GT Benchmarks

Picture from HKEPC

The original plan seemed to be relying on the rumoured X1900XL
to counter the 7900GT. This seemed to be aborted last minute due to un-ideal
yield of the R580. From there, the X1900GTO was scheduled to be the replacement.
The speculated model name was recently changed to X1900GT, and this caused
some confusion among the speculators. The reason for the change of name seemed
to be for consumers to distinguish the price-point plane with regards to the
competition easily.

face="Arial, Helvetica, sans-serif">
face="Arial, Helvetica, sans-serif" color=#ffffff
size=2>Radeon X1900GT
face="Arial, Helvetica, sans-serif" color=#ffffff
size=2>Geforce 7900GT
face="Arial, Helvetica, sans-serif" color=#ffffff
size=2>Radeon X1800XL
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Core Code
face="Arial, Helvetica, sans-serif"
size=2>R580
face="Arial, Helvetica, sans-serif"
size=2>G71
face="Arial, Helvetica, sans-serif"
size=2>R520
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Process Technology
face="Arial, Helvetica, sans-serif" size=2>90nm TSMC
face="Arial, Helvetica, sans-serif" size=2>90nm TSMC
face="Arial, Helvetica, sans-serif" size=2>90nm TSMC
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>No. of Transistors
face="Arial, Helvetica, sans-serif"
size=2>384M
face="Arial, Helvetica, sans-serif"
size=2>278M
face="Arial, Helvetica, sans-serif"
size=2>321M
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Core Clock (VS/Core MHz)
face="Arial, Helvetica, sans-serif"
size=2>575MHz
face="Arial, Helvetica, sans-serif"
size=2>470/450
face="Arial, Helvetica, sans-serif"
size=2>500MHz
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Memory Clock
face="Arial, Helvetica, sans-serif"
size=2>1.2GHz
face="Arial, Helvetica, sans-serif"
size=2>1.32GHz
face="Arial, Helvetica, sans-serif"
size=2>1GHz
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Pixel Shader Unit
face="Arial, Helvetica, sans-serif"
size=2>12
face="Arial, Helvetica, sans-serif"
size=2>24
face="Arial, Helvetica, sans-serif"
size=2>16
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Vertex Shader Unit
face="Arial, Helvetica, sans-serif"
size=2>8
face="Arial, Helvetica, sans-serif"
size=2>8
face="Arial, Helvetica, sans-serif"
size=2>8
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>ROPs
face="Arial, Helvetica, sans-serif"
size=2>12
face="Arial, Helvetica, sans-serif"
size=2>16
face="Arial, Helvetica, sans-serif"
size=2>16
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Pixel Shader Processor
face="Arial, Helvetica, sans-serif"
size=2>36
face="Arial, Helvetica, sans-serif"
size=2>48
face="Arial, Helvetica, sans-serif"
size=2>16
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Memory Interface
face="Arial, Helvetica, sans-serif"
size=2>256Bit
face="Arial, Helvetica, sans-serif"
size=2>256Bit
face="Arial, Helvetica, sans-serif"
size=2>256Bit
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Frame Buffer Size
face="Arial, Helvetica, sans-serif"
size=2>256MB
face="Arial, Helvetica, sans-serif"
size=2>256MB
face="Arial, Helvetica, sans-serif"
size=2>256MB
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Memory Bandwidth
face="Arial, Helvetica, sans-serif"
size=2>38.4
face="Arial, Helvetica, sans-serif"
size=2>42.2
face="Arial, Helvetica, sans-serif"
size=2>32
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Vertices/s
face="Arial, Helvetica, sans-serif"
size=2>1150M
face="Arial, Helvetica, sans-serif"
size=2>940M
face="Arial, Helvetica, sans-serif"
size=2>1000M
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Pixel Fill Rate
face="Arial, Helvetica, sans-serif" size=2>6.9 Billion/s
face="Arial, Helvetica, sans-serif" size=2>7.2 Billion/s
face="Arial, Helvetica, sans-serif" size=2>6.4 Billion/s
face="Arial, Helvetica, sans-serif" color=#ffff00
size=2>Texture Fill Rate
face="Arial, Helvetica, sans-serif" size=2>6.9 Billion/s
face="Arial, Helvetica, sans-serif" size=2>10.8 Billion/s
face="Arial, Helvetica, sans-serif" size=2>8.0 Billion/s

From the tests conducted by HKEPC, the X1900GT beats the 7900GT
in 3D Mark 05 and 06 but loses out in 3D Mark 03. In Game Tests, the X1900GT
leads in Half Life 2 and BattleField 2 but lags behind in FEAR, Doom 3, Splinter
Cell and Serious Sam 2. It seems that the 7900GT is still the overall winner
in terms of gaming. More details
here.