I bought an EeePC a few days back mainly to use as a light weight way of dealing with photos when I travel.
When configured so the video frame matches the screen, the HD video clips play in smooth slow motion with sound at normal pace.
At full screen, where you would need to pan and scan, to see the whole frame they play at normal speed.
In the past I have had HD videos play well on low spec celeron notebooks and only had problems with Vista where the video shudders until you up the ram.
I upgraded the EeePC ram to 1gb and there was only a marginal improvement in pace.
Has anyone any suggestions about a good alternative video viewer or codec for avi on EeePCs.
I have had interesting experiences with 4gb SD cards purchased from Hong Kong via Ebay.
A "PNY" class 4 SDHC card worked well with HD video and wrote at 5450 on the CHDK benchmark test found under "Debug Parameters"
Two Elite Pro cards package like the real thing were obviously not. One flew along at 8500 and its brother struggled at 2100, about as bad as a card can get.
The cards were delivered at the same time from the same dealer and I do not know whether there is method in the way they bundle up these O.E.M. cards for sale when different batch numbers are so different.
At least they were 4gb. I see some customers complaining that what they receive are small cards with phoney partitions to look like large cards.
Even genuine cards can be deceptive. I have some Apacer cards labelled 60x that will not record HD video adequately and a very old Kingston low spec card, that does.
Here is some interesting comparisons of SD card performance from the CHDK Wikki:
http://chdk.wikia.com/wiki/Benchmarks