gx240 tower
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From: Ben Myers on 9 Aug 2010 13:01 On 8/9/2010 11:07 AM, mc wrote: > On Aug 8, 2:07 am, "William R. Walsh" > <newsgrou...(a)idontwantjunqueemail.walshcomptech.com> wrote: >> Hi! >> >>> There are also USB 2.0 cards with VIA chips, but I have not tried... Ben >>> Myers >> >> The few Acer USB chipsets I've seen were pretty bad, only meeting a very >> loose definition of working on most operating systems. They worked the best >> on Windows, but I never pushed 'em as hard as I did on the other systems. At >> USB 1.x rates they worked fine. At USB 2.0 rates they turned into garbage. >> >> The VT6202 was VIA's first USB 2.0 chipset, and it has some problems under >> *ix operating systems with maintaining connections at differing data rates >> across differing ports. Other than that, and the fact that it is somewhat >> slower than the Intel USB 2.0 implementation, I haven't had too many >> complaints. >> >> VT6212 is supposed to be an improvement on the 6202, focusing mainly on >> performance. As far as I know it did that in some ways and fell short in >> others. I remember the ones I used being more stable with mixed USB 1.x and >> 2.0 devices. >> >> The VT6214 is a 6212 that supposedly allows for the placement of another >> device (SATA, Ethernet, Firewire--all usually also from VIA) on the same >> board, for a multifunction card. I don't think it has any special PCI-PCI >> bridge or arbitration logic on it, as every card I've seen appears to have >> the PCI bus directly connected to both ICs. Some motherboards have serious >> problems with this idea. >> >> I know I've seen boards with a Silicon Image (!!) USB chipset onboard, but I >> have no idea about them. Never got a close look at one. >> >> If you want a combo board (USB+1394), Adaptec and Orange Micro both made >> some nice ones--HiNT PCI-PCI bridge, NEC USB 2.0 and a Texas Instruments >> 1394 IC...basically the best of everything in my opinion. These show up on >> eBay now. >> >> William > > Thanks Ben and William for the info. William the power supply from > Athena was designed for the dell systems and seems to work well in > both the dime 4550 and the gx 240. The cards I tried were Ultra and > some cheapie from compusa that only says controller card on the box. > So I will see if I can find a NEC and try it out. If you see one that > you think might work perhaps you could post the site. Ben what is it > about the gx240 chasiss that does not work with the 775? Is it some > type of grounding issue with the power supply? mc The Optiplex GX240 (and the Dimension 4550) chassis will not accept the Dell LGA-775-board-mounted-on-a-metal-plate because the CPU cooling fan matched with the LGA775 cannot be made to stay attached to the back of the chassis. The cutouts on the back of the chassis are different than for the fan that supports the LGA 775 CPUs, so the plastic tabs do not slip into the cutouts properly. Otherwise, as long as one installs an LGA 775 capable power supply, it would work... Ben Myers |