Dell Optiplex 790 compatible mid range GPU? specifically HD 6850?

[kazazink]

My dad bought me this new Desktop PC, I was expecting a gaming PC but my dad isn't that techy enough so he actually bought me this, a non-gaming PC build. So here's the specs:
i3 2100 (3.10 ghz), 4 gb ram (1333mhz),LGA 1155 Q65 chipset mobo w/ 2 dual x16 PCI E slot. with a mini/mid tower. Not really sure about that one.
Obviously I want to upgrade this by replacing the PSU and putting a Video Card for gaming purposes. Im looking forward to a Sapphire HD 6850 but Im not sure if it will fit in my rig. 1st factor is the length, according to the specs, a Sapphire HD 6850's dimension is 9.37" x 3.86" x 1.46". I measured the space inside my case and the available space from edge to edge(length) is about 10. so so inches. So I guess the length of the card will fit but i noticed that the card might bump in the SATA ports in the right most part of the mobo and are about 1/2 inch away from the PCIE slot lane.

Any thoughts about this? I don't want to buy the card if it wouldn't fit. Someone might have this same situation?

[Pancake]

Is it a small form factor case?

[kazazink]

Not that one sir. the bigger one, I cant post the url nor the image because of the forum restrictions sorry :|

[Pancake]

No worries, i know what you mean. How many watts is the PSU?

If you want to replace it you will need a new case too, its a non standard PSU

[kazazink]

Thank you for the quick reply sir. Very much appreciated.

[Pancake]

Sorry, i edited the above post lol. If its like 300+ i would get a 6770 and put it in there

Dell PSU's are usually pretty good quality actually so that should be fine with a low power card like the 6770, and it should still play games decently

[kazazink]

Oh I see, the PSU wattage rate is only 295 watts wit 90% efficiency if im not mistaken. My second choice was HD 6790 and a power color edition of it was just 8.5 inches in length. But as you said the PSU is a non-standard one so a new case will be needed. I'm on a budget actually and i just want to throw 70% of my budget for the Video card. So frustrating

[Pancake]

Get a 6770 if i were you, it will still play pretty much everything tbh.

You could risk it with a 6790,



I wouldn't though, but im sure it would work fine actually.

[kazazink]

You have a point there sir. But will my PSU can take it? according to the manufacturer's site, a 6770 needs a 450 watts of PSU.

[Pancake]

Ignore that.

a 6770 would be fine, honestly. Because they are quality PSU's they can take more than say a 500w Generic PSU or maybe even a 600.

[kazazink]

One more problem, it needs a one 6-Pin PCI Express Power connector. I think my PSU don't have one.

Please shed some light about these stuffs. sorry!

[Pancake]

You can get Molex to PCI-E 6 pin connectors, the cards usually come with one anyway

[kazazink]

I see, i thought a 6-Pin PCI Express Power connector is PSU based, I mean it comes from the PSU. So it's just a connector from board to the Video card?

[jim]

I see, i thought a 6-Pin PCI Express Power connector is PSU based, I mean it comes from the PSU. So it's just a connector from board to the Video card?

No, it's from the PSU to the graphics card.

But you can convert two four-pin Molex plugs into one 6-pin PCIe plug. As long as you've got two spare molex plugs coming off the PSU, and the right adapter, it should work.

[kazazink]

Thank you sir snootyjim for shedding some knowledge

[kazazink]

My PSU don't have any spare Molex connectors. Bad luck for me then