will amd 6770 fit in dell optiplex 755 mini tower??

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I have both 5770 and 6770, they are the same card. You are very marginal for power supply with the 305. Did you mean 350w?

This is an older but OK card. If you are buying there are better cards to get that perform the same or better at much lower wattage. e.g. gtx 750 ti that will run fine on your power supply (http://www.hwcompare.com/17358/geforce-gtx-750-ti-vs-radeon-hd-6770-1gb/

but if you have the 6670 already go for it. it's a fine old card. it might work with the power supply.







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tsnor

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I have both 5770 and 6770, they are the same card. You are very marginal for power supply with the 305. Did you mean 350w?

This is an older but OK card. If you are buying there are better cards to get that perform the same or better at much lower wattage. e.g. gtx 750 ti that will run fine on your power supply (http://www.hwcompare.com/17358/geforce-gtx-750-ti-vs-radeon-hd-6770-1gb/

but if you have the 6670 already go for it. it's a fine old card. it might work with the power supply.







 
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william p

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i had a HD 6770 and I think it needed a 6 pin PCIe cable. Your 305W PSU won't have that. The Dell PSU is OK for anything without a PCIe cable. The card you linked to was a 6670. The 6770 may require a 6 pin cable which will require a bigger PSU. The options are GT730 64bit 1 GB DDR5, or the GTX750 Ti which may require some modding to fit but no PSU purchase. I don't know which AMDs don't require PCIe power. I'm sure there are some.
Aftermarket PSUs will fit OK. Also the 375W from the Precision T3400 will work and has the cable. Generally the GTX750Ti is the way to go. It's the fastest card with no PCIe power.
Also I've seen some faster Core2Duos used in those E8400 etc.
 
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heemaa

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Jul 25, 2016
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how can i know that my psu have 6 pin or less

 
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heemaa

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can you suggest a less cheap graphic card ?
 
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tsnor

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Maybe this: $100, $80 after rebate: http://www.newegg.com/Product/Product.aspx?Item=N82E16814127784&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=

either of these work for you ? http://gamesystemrequirements.com/gpu/compare/radeon-r7-250-vs-geforce-gt-740
$70-$80 https://pcpartpicker.com/products/compare/gBQypg,gbqdnQ/

Much lower than this gaming performance falls like a rock, consider used cards.

The cards above will have no problem with a 300W PSU.

UPDATE: Did you want more expensive or cheaper " suggest a less cheap graphic card ?"

More expensive that will still run on a 305W PSU are hard to find. You need to post the 12V amps from your PSU which is most likely on a sticker on your power supply and may be visible if you open your case.

 
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william p

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BTW if you ever decide to upgrade your PSU watch the rating of the 5V. rail also. Old Dells use it a lot more than newer computers. Some new PSUs can come up short there.
There are a lot of people running GTX750Ti on 275W Dell PSUs in DT computers so you should be OK. Dell doesn't sell their PSUs to the public by the watt, so they don't need to fluff up their ratings. They sell to IT departments and their rating is for 24/7 worst case scenario use. The 305W doesn't have the 6 pin PCIe cable. GTX750Ti, and a Q6700, or Q9550-9650 will wake that thing up. Heatpipe cooler D9729 from the old Pentium Ds will cool anything that fits in there.
 
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william p

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BTW you need to watch out for EUFI compatibility. Older computers used a Legacy BIOS, newer ones EUFI. EUFI cards wont run on Legacy computers. Find out which type BIOS you have. GTX750 comes both ways.Any card with a 2 slot bracket you will need to cut the bracket in 1/2 to fit it. I would carefully remove the bracket and test the card first to be sure it works in case you need to RMA it. Then cut the bracket if you are keeping the card.
 
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tsnor

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"... EUFI cards wont run on Legacy computers.... " Seriously ? Just no. Not true. EUFI vs older BIOS does not show up to a PCIe card. My GTX960 runs just fine in an ancient BIOS based i7-920 system.

"Any card with a 2 slot bracket you will need to cut the bracket in 1/2 to fit it." Umm, no you can't cut the bracket of a double slot card and make a single slot card -- the card itself is too wide. What did you read that makes you think this is true ?
 
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tsnor

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"...if you ever decide to upgrade your PSU watch the rating of the 5V..." You have this backwards. Older (pre-pentium) computers used a lot of 3.3 and 5V. Some PCs come with power supplies left over from those days that have much more 5V than a modern PC uses. Newer systems like the one the OP mentions uses just 12V for MB, CPU and video card and will be just fine with a PSU that does not have a lot of 5V. (The only real use for 5V is for older spinning disk drives which can use both 5V and 12V to move heads and spin the drive and maybe power out the USB ports or a stray sound card).

Aside: You are right with the "GTX750Ti on 275W Dell PSUs" being good. I have an HP based q6600 based system with 4 spinning drives and a GTX 260 sitting behind me as a media server. It runs happily on it's stock 350W PSU, and that GTX260 (at 182 W TDP) pulls much more power than a GTX750Ti (rated 60W TDP). Not sure those numbers are actually comparable.
 
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heemaa

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Jul 25, 2016
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does gtx 260 fit with optiplex 755??
 
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tsnor

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You don't want a gtx 260, it uses too much power for your power supply because it is old technology. But if you did swap out your power supply for something with 400W then yes the GTX 260 would work. It would be cheaper/better/easier for you to buy a new low power video card then to buy any card (even a used one) that needs a power supply swap.
 
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heemaa

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are you sure that gt740 is exactly like gt 730 when i install it on optiplex 755 and dont have any problem with it
 
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tsnor

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If this is your PC: http://www.dell.com/us/dfb/p/optiplex-755/pd Then it comes in DIFFERENT SIZES. You need to get teh right sized card for your PC.

If you have the "Mini-Tower" then it has "2 full height PCI
-(H: 4.2" X L: 11")
1 PCIe x16 full height graphics,"

And will work well as well with a 740 as a 730. Both are fine with the 305W power supply. Neither needs an external power connector. When you buy the card you do *NOT* want a low profile card, you want a full size bracket. Here is an example of a full size gt740: http://www.newegg.com/Product/Product.aspx?Item=9SIA2F83MY0026&cm_re=gt740-_-14-121-877-_-Product
Update: here's a cheap full size card ($85) http://www.newegg.com/Product/Product.aspx?Item=N82E16814125774&cm_re=gt_740-_-14-125-774-_-Product and here's one for $70 https://www.amazon.com/Gigabyte-GDD5-2GB-Graphics-GV-N740D5OC-2GI-REV2/dp/B00TB8XQXU/ref=sr_1_1?ie=UTF8&qid=1469859316&sr=8-1&keywords=gt+740+2gb

----

If you have the "Desktop" Then you have "Slots
2 low-profile PCI
-(H: 2.5" X L: 6.6")
1 low-profile PCIe x16 graphics"

This PC also will work well as well with a 740 as a 730. Both are fine with the 280W power supply in teh 'desktop' version. When you buy the card for this PC you MUST use a low profile card, you cannot use a full size bracket. Here is an example of a Low Profile GT740 https://www.amazon.com/NVIDIA-GeForce-Profile-PCI-Express-ZT-71003-10L/dp/B00KWYTBGI/ref=sr_1_6?ie=UTF8&qid=1469858906&sr=8-6&keywords=low+profile+gt+740

Finally there is yet another size for your Optiplex: Small Form Factor (SFF).

Slots
1 low-profile PCI
-(H: 2.5" X L: 6.6")
1 low-profile PCIe x16 graphics
-(H: 2.5" X L: 6.6")

Power Supply
275W

This PC will also work with either a gt730 or gt740 (275W is plenty for either card). This PC also needs a low profile card.
 
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