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Upgrading GPU on Optiplex 755

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I have perfectly functioning OS X 10.11 hack on this machine.


It's used primarily for Logic Pro X (70% of the time), then everyday web surf, some gaming (Mac Native) and Final Cut / iMovie demo projects. In that order.

It has been all good until i jumped from 1280x1024 to 1920x1080 monitors. Now, it's all choppy(er), games and video editing, and CPU is much more utilized in some applications (YT 1080p videos for instance). 


I would like to upgrade GT220 to something that will still run on stock PSU (300W) and not spend too much, since I'm saving for new machine, but cannot tell if its gonna be in the next few months or a year.


Main contenders, for now, are second hand ASUS nVidia GTX650 and Sapphire Radeon HD 7750 (50 euros each) or new GT 730 of some kind (about 75 euros)...


I would like to hear you opinions, first if possible, on these two cards (GTX650 and HD7750), and anything else if comes to your mind!


Btw, im not using this PC for Windows or any other application rather than OS X.

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We sell hundreds of these in work every day. We generally use Radeon 5450 if you just want to add HDMI support, Geforce 610's for a slightly upgraded experience, or Radeon R7 250's which will run most games on medium settings.


We use the MSI version of the R7 250 as it's heatsink is the correct size to fit.


Not sure how it will run on a hackintosh.

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Hi Dook, thanks for your input!


When you said "we sell hundreds of these" were you talking about HD5450?

I don't think that HD5450 and GT610 are big step up from GT220, if at all..? 

There is advantage in much newer architecture and OpenGL platform, but thats it AFAIK (please, correct me if I'm wrong).


I would really like to have GPU able to integrate OpenCL and Metal in its work.


Was thinking also about R7 240/250 since @Slice was mentioning them in few topics, but he also said that 240 is not that good and there isn't much talk about 250 in hackintosh community.


Because of that, i was thinking that HD7750 and GTX650 are step up from GT220 (OpenGL 4.2 and 4.3, 128bit) but i still don't know what direction to take. 

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Hey, thanks @Codinger for your input.


I'm still torn between new and second hand purchase. There isn't much second hand geforce 7xx series on ads but there are some HD5670 and HD7750 that could work nicely (?).

I found this for 45 euros though. What are the opinions on this? Silent, ddr3  and 64bit, but supports OpenGL4.4...


Is there still any difference between manufactures in running it in OS X? I also found few GTX 750 (1gb, 2gb, ti, oc...) new for ok prices (120-140 euros) but then run into this topic - http://www.insanelymac.com/forum/topic/302628-gtx-750-ti/?hl=%20asus%20%20gtx%20%20750

Which, frankly, left me a bit worried.

The best bet is to buy EVGA (in GeForce camp) but GTX750 is double bracket card, so i would have to cut into Optiplex housing if i wanted to squeeze that in... 


Again, i will be using this GPU for OS X only. The most demanding games i ever play are Arkham City and Borderlands 2 (Mac Native). Everything else is music work, not important for GPU.

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Not the problem, i've booted everything from Mountain Lion to El Capitan with A22.


What OS X are you trying to boot?

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I ran Mavrick with Chamleon Bootloader. Then I update the bios A22 and wouldn't boot.

I run Mav on Dell Laptop. I made  many USB boot loaders,none would boot.

Tried Clover ,would not boot. Different bios settings.

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Have you seen post i left for you few weeks ago?




Regarding A22 BIOS, you need to reset to default values, and make sure that SATA Controller is on AHCI (except for Yosemite), disable virtualizations and enable Speedstep (not mandatory).

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