1070TI Upgrade for Optiplex 7040 SFF i7-6700

It will not work because SFF systems have insufficient power.

The 1080TI has even greater power requirements and they do not make a single slot low profile version of this card.

My dear Speedstep, the GTX 1070 Ti is a thing. It is priced and performs between the GTX 1080 and 1070.

www.newegg.com/.../Product.aspx

This particular model says it requires a 6-pin and 8-pin pci-e power connector and will consume a max of 180w. The recommended psu should match/exceed 500w. A good brand such as EVGA/Corsair and efficiency of 80 plus gold would do you well, OP. What make/model power supply do you have?

Also, check for clearance by looking at the dimensions of the card. Most 1070Ti's are full size double slot cards that need cooling fan clearance. What are the innards of this Dell SFF like?

I have disassembled the pc so we do not have to worry about space.

I have EVGA 500w 80+ psu.

I merely want to make sure if the card will work with the dell motherboard because Dell is sometimes tricky to upgrade.

What

I have disassembled the pc so we do not have to worry about space.

I have EVGA 500w 80+ psu.

I merely want to make sure if the card will work with the dell motherboard.

500W is not sufficient.  Power supplies are not single rail units with single spec of watts.  PCI-E cards have a 3.3v rail as well as the 12v Slot power and Aux power connections.

Yeah, it will be fine. PCI-E x16 graphics card slots are standard on most consumer motherboards and pre-builts, and if you had an RX 480 in it, I would imagine you wouldn't have problems replacing that with a GTX 1070 Ti. Do you know what gen PCI-E you have? It won't matter too much, but it is something to consider.

en.wikipedia.org/.../PCI_Express

So I'm assuming your power supply is up to the task with correct 6-pin and 8-pin connectors and 12v amps, which hopefully will be fine. You should post your power supply model so we can see.