4870
Card Mac Pro Model Working OS X Version Failure Type Notes
Sapphire Radeon 4870 1GB 2006 YES 10.5.6 N/A
ASUS Dark Knight 4870 1GB ? NO 10.5.6 Flashing Failure
Sapphire Radeon 4870 512MB 2006 YES 10.5.6 N/A Upper DVI Single Link

Notes
512MB:
1GB: SAPPHIRE 100259-1GL Radeon HD 4870 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP. PN# 288-20e85-130sa SKU# 11133-04-20r
You have to purchase this EXACT card for this to work

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