Crazy pc or cd writer

dear all
i have an 2 old PC “p2=350mhz and sdram 128 DD 6 go” with cd rom lg52 and cd writer lg 52x32x52
the problem: the one of them burn one full cd in 12m and the other in 3m yes in 3m, i format and install the system and i change the cd rom and cd writer
but no thing happen .
i test the cd rom and cd writer in other pc with p4 2.66 ghz and ddram 512m" and it burn the cd in 3m like one of the old PC
and there are other pc 3.2ghz and ddram 1024 it was burn a full cd in 20m yes 20m .
why and there are any solution to make the other PC o burn in 3m
thank you

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Both dma enabled ?

yes

latest chipset drivers installed?
Tried a different IDE cable?
Scanned systems for viruses/spyware/malware?
Checked Event Viewer for any problems?

i reinstall the system and i change the ide cable , cd writer and cd rom but nothing
about chipset : i have other pc with self hardware and it burn in 3m???

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