It only supports one 30' Cinema and one 'normal' display, while the GeForce 6800 GT and Ultra support up to two 30' Cinemas. Only possible downside is if you have two 30' Cinemas. And at $350, it's cheaper than buying the G5 tower with the default wimpy Radeon 9600 or 9650 and replacing it with an aftermarket $500 Radeon X800 XT. (See chart below) The other good news is that the X850 XT takes up only one slot (vs the CTO GeForce 6800 GT and Ultra which take up two). Yet by dropping the Ultra version of the GeForce 6800 and replacing it with the GT, the Radeon X850 XT becomes the best choice for maximum OpenGL performance. June 28th, 2005 - Radeon X850 XT added to Apple's CTO options for the G5 Power Mac! And GeForce 6800 Ultra dropped! The X850 XT appears to be a speed bumped X800 XT. And we'll also address the issue, 'Does having dual processers help with 3D gaming?' (Short answer: only if you are running Quake3.) We'll publish a full page comparing all the cards at 1280x1024 soon. Check out the X800's advantage over the stock 9600 XT: Note to readers running at 1280x1024: There are great gains to be had over your 'old' graphics card by upgrading to the X800, even if you aren't running at 1920x1200. The same is true of the GeForce 6800 Ultra. When I ran the Halo 'highest quality' TimeDemo sequence, the CPU fans kicked up drowning out any sound coming from the graphics card fan. At 'idle,' if I put my ear right up to the baffle and cracked it open slightly, I could barely distinguish the X800's fan from the Power Mac's multiple fans.
I had only the clear plastic baffle on the G5/2.5 Power Mac test unit. Many of you are asking 'How noisy is the fan?' ATI has done a good job of choosing a quiet fan for the X800. However, if your second display is DVI (or even VGA), there are inexpensive adapters to convert the ADC port to drive a DVI or VGA display.
The GeForce 6800 cards have two dual link DVI ports and therefore can drive two 30' Cinema displays.ĪTI included an ADC port on the X800 because they believe most buyers of the X800 XT already have an ADC display they would like to use with their G5 Power Mac.
That means it supports one 30' Cinema and a second display of your choosing (as long as it's not another 30' Cinema). The X800 XT comes with one dual link DVI port and one ADC port. The only G5 Power User that might prefer the GeForce 6800 would be the few 'lucky dogs' with TWO 30' Cinema displays. There's no corresponding tool for the GeForce 6800 Ultra that I know of. As designated by the asterisk (*), we used ATIccelerator II to overclock the core to 500MHz and the memory to 1100MHz. The X800 XT has the added advantage of being an ATI product which means it can utilize the ATI Displays utility to override the OpenGL settings in all applications to take advantage of such features as advanced Full Scene Anti-Aliasing and Anisotropic Filtering.
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