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MacPro1,1 Processor Upgrade Question
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<blockquote data-quote="pigoo3" data-source="post: 1541619" data-attributes="member: 56379"><p>Are you saying that you would be going from 2 x 2.66ghz dual core to 1 x 2.66 quad core? If so, you might as well install 2 of them for 8-cores.</p><p></p><p>I checked e-Bay...and these 5355 cpus seem to be selling pretty inexpensively. I saw a pair selling for $50 US. These cpu's weren't that cheap two years ago. </p><p></p><p>So I would say give it a try. 8-cores will certainly be faster than 4-cores.</p><p></p><p>I don't think that the EFI situation will change. I think that the EFI is a logic board thing...not a cpu thing.</p><p></p><p>FYI...there are some step by step You Tube videos doing this exact cpu upgrade. Check them out.</p><p></p><p>If I still had my Mac Pro 1,1...with the 5355 cpu's selling for just $50 bucks US...I would definitely do it.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>- Nick</p></blockquote><p></p>
[QUOTE="pigoo3, post: 1541619, member: 56379"] Are you saying that you would be going from 2 x 2.66ghz dual core to 1 x 2.66 quad core? If so, you might as well install 2 of them for 8-cores. I checked e-Bay...and these 5355 cpus seem to be selling pretty inexpensively. I saw a pair selling for $50 US. These cpu's weren't that cheap two years ago. So I would say give it a try. 8-cores will certainly be faster than 4-cores. I don't think that the EFI situation will change. I think that the EFI is a logic board thing...not a cpu thing. FYI...there are some step by step You Tube videos doing this exact cpu upgrade. Check them out. If I still had my Mac Pro 1,1...with the 5355 cpu's selling for just $50 bucks US...I would definitely do it.:) - Nick [/QUOTE]
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