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 :

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 :

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.

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

 

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