Is the geforce 6800 ultra ddr3 same as the ddr and will the ddr3 fit my dual powermac G5 june 2004?

Question

i want to get this video card but there is a ddr and a ddr3 whats the difference and will it fit my power mac dual cpu june 2004??

Answer 1

The Apple OEM versions are GDDR3 memory for the GT DDL and the Ultra DDL.
Both run 16 pipelines and both use the NV4x GPU clocked at 350MHz and 400MHz respectively..
Total bandwidth runs in the favor of the Ultra DDL:
Geforce 6800 GT 32GB/s
Geforce 6800 Ultra DDL 35.2GB/s
However, benchmarks show the performance of the two cards to be very close:
http://www.barefeats.com/radx800.html
The PC versions of the GT and Ultra use the same GPU, GDDR3 memory and same clock speeds, except in the case of OC variants.
The Memory clocks of the GT and Ultras (OEM or PC) are 500 MHz (1000 MHz) and 550 MHz (1100 MHz).
Performance of the PC  version is the same as the OEM equivalent, only port configuration and card width being major differences (PC cards are typically single slot, while OEM are dual slot. This is a negative if one has many PCI/PCI-X cards).
Of course there are cooler variations, but all use either a single or a dual slot Cooler Master cooler.
Both OEM Geforce 6800 GT and Ultra cards will fit in and work in any AGP G5 (yours) with only OS X Panther 10.3.6 or later being needed (Tiger sam an improvement in Geforce drivers).
Of the flashed GT and Ultra cards, the same is true of the OEM- either can be used in any AGP G5.