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Introduction to the nVidia GeForce 7800GTX Series

Introduction to the nVidia GeForce 7800GTX Series - PCSTATS
Abstract: The GeForce 7800GTX chipset has a simple purpose; to catapult nVidia back onto the 'fastest, most expensive videocard' throne.
Filed under: Video Cards Published:  Author: 
External Mfg. Website: Nvidia Jul 06 2005   Mike Dowler  
Home > Reviews > Video Cards > Nvidia GeForce 7800GTX

Power draw and Windows Longhorn

The 7800GTX does not require any more power than the 6800Ultra, at least according to nVidia. The minimum required power supply wattage for a 7800GTX system is 350Watts, same as the the 6800Ultra.

How is this possible? NVidia has used a combination of the lower power requirements of the 110nm process and a clock gating mechanism (clock gating involves turning off or slowing the clock signal to certain units of an integrated circuit when they are not being used), to achieve a notable milestone: higher performance at slightly lower power levels.

This means that nVidia was able to make its reference 7800GTX card without using an enormous heatsink, so it will not dominate the empty slot next to it on your motherboard. The 7800 GPU might have a bright future with nVidia's mobile line of graphics products too.

Short end of LongHorn?

The nVidia Geforce 7800GTX also integrates support for the new graphical features that will be introduced with Windows Longhorn and its Windows Graphics Foundation API, including the off loading of the desktop rendering load to the GPU and the (potential) ability to page 3D graphics into the system's virtual memory. Obviously, these features are only really going to be useful with the 3D desktops that Longhorn is supposed to make routine, but equally obviously the 7800GTX graphics processor is going to be mostly obsolete by the time Microsoft gets around to releasing Longhorn, so we won't put much more effort into describing the ways they could work together.

The 7800GTX is the new fastest videocard available, both on paper and in benchmarks from reviews on the web. It's got a price to match, but ATI will have to drop its prices some as the X850XT PE is not significantly cheaper.

Of course, the 7800GTX represents only the first salvo in this year's version of the video card wars, and we will be waiting with baited breathe for ATI's response and benchmarks from its CrossFire dual-card technology. As summer 2005 moves on, things should be heating up in more ways than one!

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< Previous Page © 2017 PCSTATS.com Video Cards News»

 

Contents of Article: Nvidia GeForce 7800GTX
 Pg 1.  Introduction to the nVidia GeForce 7800GTX Series
 Pg 2.  Smoke and mirrors = eye candy
 Pg 3.  Polygons and SuperSampling
 Pg 4.  — Power draw and Windows Longhorn

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