MacPro 1.1 cheap PC GPUs vs apple 7300

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hi!

i'm in start of upgrade macpro 1.1. pair of 5355 processors.
in future i'm interested try yosemite on computer. did of next pc gpus can work in mac (or upgrade 2.1) or without flashing. boot picture apple logo not imprtant me. experiences? other gpu recommendations (in price range)?

vtx 3d hd 5450 silent 1gb ddr3 pcie2.1

asus hd 5450-sl-hm1gd3_lv2 1gb ddr3 pcie2.1

asus eah5450 silent/di/1gd3(lp), ati radeon, hd5450, pcie x16, 1024 mb, ddr3, 64-bit

vtx 3d hd5450 2gbk3-he, ati radeon, hd5450, pcie 2.1, 2048 mb, ddr3, 64-bit, gpu 650 mhz, memory 1000 mhz, dvi-d, hdmi, 2560x1600

asus gt730-sl-2gd3-brk, nvidia geforce, gt740, pcie 2.0, 2048 mb, ddr3, 64-bit, gpu 902 mhz, memory 1800 mhz, dvi-d, 1x d-sub, hdmi, 2560x1600
 

i running 10.10 on macpro 1,1 nvidia gtx-570. no boot screen fast.
 


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