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What's the best graphics card for my computer - Optiplex 755?

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August 12, 2013 5:15:14 PM

Hello, I am wanting to buy a graphics card for my Optiplex 755. It has an Intel Core 2 Duo 3.00GHz processor and 2gb of ram. I am wanting to spend about $50-$60. I really only want play Minecraft, WoW, LoLm and TF2. I am hoping to get 60FPS in Minecraft on high settings. My Optiplex is the biggest tower.

Thanks!
a c 319 U Graphics card
August 12, 2013 6:41:28 PM

From what I can find, the full size tower has a 305W power supply. Does the PSU have a PCIe power cable? The best you can do for a gfx card will probably be one that gets all its power from the PCIe x16 slot alone. But if the PSU has a power cable for the gfx card, you may be able to jump up tier.
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a b U Graphics card
August 12, 2013 7:55:59 PM

This is actual Optiplex 755 lineup



So if you have Mini Tower


I think I have to step in since not so many users know the limitations of Optiplex Mini Tower cases - this is not your typical small ATX case, it is BTX case, and not all video cards can fit, so I will provide you all with small guide into Optiplex MT GPU upgrading.

THIS POST APPLICABLE TO MT (MINI TOWER) FORM FACTOR ONLY.

Unfortunately no card that is more than 7.5 inches long or 2 slots wide will PHYSICALLY FIT inside the case - it was found that only single bracket video card can fit due to BTX MOBO, where card internals facing upward towards PC internals, not ATX, where dual card design is blocking another PCI slot by facing downward.
If you prefer the card with beefier fan, then the length of the card must not exceed 7.5 inches, otherwise only "skinny" single bracket, single slot cards can physically fit.

Pictures below will prove my point.

View shows no room for dual bracket



Single bracket only, or you have to cut dual bracket in half



This is the other way to show my point



Here you can clearly see only single place for the bracket



Visual explanation



7.5 inches explained, also shown "obstacles"



This is the picture of actual "skinny" single slot video card (not sure which model)- perfect, "glove" fit.



There is additional problem, which I can not check - there are tall transistors on motherboard (this is Optiplex 745 Mini Tower motherboard)





take a close look at PCIE slot (the one to the right, with blue holder lever), next to the lever you can see 2 black tall transistors, this could be a problem for low sitting card, it was never reported to my knowledge on Optiplex 745 or 755 (similar problem was reported on Optiplex GX620, which has more transistors like this, so it could be not applicable here).


I will list below strongest and largest cards, which can fit, in addition to those, most low profile cards will fit as well, the best in this class is

SAPPHIRE 100357LP Radeon HD 7750 1GB 128-bit GDDR5 PCI Express 3.0 x16 HDCP Ready Low Profile Video Card http://www.newegg.com/Product/Product.aspx?Item=N82E168...

So, I found 2 GDDR5 7750 cards and one DDR3 4GB (GDDR5 is better than GDDR3, even if GDD3 offers 2 GB RAM or more), which confirmed in reviews to fit Optiplex gx620, 745 and 755 cases (the difference between those models are different processors).

Skinny, flimsier in terms of construction, completely single slot XFX 7750 http://www.amazon.com/XFX-DisplayPort-PCI-Express-FX775...

A bit beefier cooler, not as skinny, more durable in construction PowerColor AX7750 http://www.amazon.com/PowerColor-AX7750-1GBD5-DH-Video-...

And one from NVIDIA, no power supply upgrade is required for this one.

ZOTAC ZT-61008-10M GeForce GTX 650 1GB 128-bit GDDR5
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Considering your budget limitations this card is perfect for you

XFX HD-667X-ZHF3 Radeon HD 6670 1GB 128-bit DDR3 $69.99 # $54.99 after $15.00 rebate card http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Anything else I can help you with?
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a c 319 U Graphics card
August 13, 2013 10:03:19 AM

Don't you think the Zotac GTX 650 with its large cooler shroud will hit the tall resistors? I was going to recommend the Sapphire HD 7750 low profile, myself.
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a b U Graphics card
August 13, 2013 11:28:35 AM

XFX 6670 and 7750 in this situation are the best cards to consider, LP cards are good as well, but they run warmer and usually cost more money.
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August 13, 2013 2:18:25 PM

Thanks Kisianik. Will the graphics card you specified for my budget require a PSU upgrade or will it be fine with 305 watts?
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a c 319 U Graphics card
August 13, 2013 2:59:36 PM

@ Kisianik
Good job on the tutorial, btw. Dells must be your thing.
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a b U Graphics card
August 14, 2013 7:42:48 AM

clutchc said:
@ Kisianik
Good job on the tutorial, btw. Dells must be your thing.


Dell is actually my specialty, I came here from Dell Forums
http://en.community.dell.com/support-forums/desktop/def... look at Sticky number 5 from the top for Inspiron 570.


XFX HD-667X-ZHF3 Radeon HD 6670 1GB 128-bit DDR3 will work on 300 watt power supply, no upgrade necessary!

P.S. If you finding any answers particularly helpful to you, please mark it as Pick A solution, to solve the thread - it will benefit others, searching for the same question.
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