Priest of the Order of the Butterfly
Posts: 524 from 2003/11/25
From: Belgrade
Quote:redrumloa wrote:
Quote:
takemehomegrandma wrote:
I know that OS4 has 3D support for a few R200 AGP/PCI cards, what I meant above was the *PCIe* cards that has been hyped by OS4 users for half a decade now.
I know you know that. My point was there is some issue with the X1000 that makes using a gfx card in a PCI slot practically useless. Some time ago i read some X1000 were getting frustrated so they bought and installed Radeon 9250 in the PCI slot. The resulting benchmarks were much worse than a Sam460. There were some revelation that there was no DMA to the standard PCI slots, or something to that effect.
It might be an OS4 thing, like it was with DMA on SAM460ex, not necessarily the Nemo boards feature. People used PCI->PCI-E converters to get a bit better speed.
http://forum.hyperion-entertainment.biz/viewtopic.php?f=33&t=1468
http://forum.hyperion-entertainment.biz/viewtopic.php?f=33&t=1468
SAM440 used to outperform X1000s PCI bus for gfx.
Hans said:
Quote:
That's theoretical throughput, which can only be achieved by transferring large blocks at a time (usually using DMA). Using DMA for such transfers is only implemented for Sam4x0 machines at this time.
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