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law guy

macrumors 65816
Original poster
Jan 17, 2003
1,001
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Western Massachusetts
I was just reading a review of new systems with the new Intel 925 and 915 chipsets on www.pcmag.com and noting the new graphics card interface. The quote below notes that the PCI-Express x16 interface had doubled scores over the 9800xt. I also noted that the chipsets are designed for 8 usb2 ports - handy. Do folks expect to see the new graphics bus in Macs anytime soon? Or has it taken Apple awhile to adapt their motherboards to new intel-spawned interfaces in the past? It seemed like functioning USB2 lagged half-a-year or so.

Anyway - here is the quote:

"Thanks to the ATI Radon X800XT, which was developed for the PCI-Express x16 interface in the Grantsdale chipset, the 8400's 3DMark03 scores almost double those from systems with the previous-generation graphics (such as the Radeon 9800XT and nVidia GeForce FX 5950)."
 
The quote below notes that the PCI-Express x16 interface had doubled scores over the 9800xt.
Read the quote again, the PCI-Exp interface does not get the credit. Nor is it going to be coming to Macs before the next major PMac update, whenever that will be.
 
sandmann41 said:
on The Screensavers yesterday they said that pci express adds almost no performance over agp
It'll be like the jump from AGPx4 - x8. Nothing requires that kind of insane bandwidth yet (read: pretty much nothing, excluding networking), and VGA cards will only use (on the whole) one direction - something AGP provides very well thankyou. The whole PCI Express thing is designed for faster bidirectional communication.
 
Hang on, would I be correct that PCI-Express is PCI-X?

I think it is (unless my memory is serving me wrong).

If so, Apple has already got support in the G5's.
 
kjwebb said:
Hang on, would I be correct that PCI-Express is PCI-X?

I think it is (unless my memory is serving me wrong).

If so, Apple has already got support in the G5's.

No, it's not the same. The G5's support PCI-X, NOT PCI-Express.
 
kjwebb said:
Hang on, would I be correct that PCI-Express is PCI-X?

I think it is (unless my memory is serving me wrong).

If so, Apple has already got support in the G5's.

PCI-Express and PCI-X are two completely different things.
 
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