Need help with my Dell Optiplex 780 mod

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harrybaconman

Sep 18, 2018
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I am currently modding an old dell Optiplex 780 sff by upgrading the RAM, GPU, PSU, and CPU. I have a GTX 570 and plan on putting that in as well but the card is not sff. The Dell Optiplex 780 uses a btx form factor motherboard but I can't find any cases that work with it. Does anyone know anything or could help?
Also, I know that the CPU cooler is in the way of the PCI-e slot, but I plan to get a PCI-e extension so that's fine.
 
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My advice would be get an Optiplex MT case so you can run an ATX PSU. Also more room for cooling mods.
Some people run an ATX PSU as a "wall wart" outside the case. The wires are long enough.
The SFF BTX heatpipe cooler is the JP911. There was a 90* GPU bracket for the DT size case.
https://www.ebay.com/itm/Dell-OptiPlex-DT-330-360-620-745-755-PCI-PCI-E-Riser-Card-M5246-G5459-w-cage/292508879960?hash=item441ae34c58:g:IoMAAOSw8D1awqsY
The DT size heatpipe cooler is the RW134. For the MT there are the D9729, T9303.
Other SFF BTX MB to look at are the Opti 380 which has a chipset that supports Xeon swapping up to X5470 but only 2 RAM slots, and the older XPS210 which has a 4 phase VRM and can run a 130W QX6800 SLACP with an overclock...
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william p

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Sep 22, 2010
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My advice would be get an Optiplex MT case so you can run an ATX PSU. Also more room for cooling mods.
Some people run an ATX PSU as a "wall wart" outside the case. The wires are long enough.
The SFF BTX heatpipe cooler is the JP911. There was a 90* GPU bracket for the DT size case.
https://www.ebay.com/itm/Dell-OptiPlex-DT-330-360-620-745-755-PCI-PCI-E-Riser-Card-M5246-G5459-w-cage/292508879960?hash=item441ae34c58:g:IoMAAOSw8D1awqsY
The DT size heatpipe cooler is the RW134. For the MT there are the D9729, T9303.
Other SFF BTX MB to look at are the Opti 380 which has a chipset that supports Xeon swapping up to X5470 but only 2 RAM slots, and the older XPS210 which has a 4 phase VRM and can run a 130W QX6800 SLACP with an overclock. Locked at 266fsb though and DDR2 800 RAM.
The PLL on that is CV184-2APAG. SetFSB works. But results can be limited.The rare and expensive X3380 Xeon should work.
I don't think an SFF PSU that can power that GPU exists.
 
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