topic Re: Dual X5550 Xeon’s...won’t address 1333MHz RAM in Mobile and Desktop Processors

Dual X5550 Xeon’s...won’t address 1333MHz RAM

JDrag5 — Fri, 25 Oct 2019 03:45:57 GMT

I have a 2009 Mac Pro with dual 2.66GHz Xeon’s. They are X5550 chips. The computer has 24GB of 1333MHz ram in it, yet the computer will only address it as 1066. I’m wondering if anyone has experienced this (in Windows or OSX machines) and if so, what they did to address it.

Thanks!

Re: Dual X5550 Xeon’s...won’t address 1333MHz RAM

AlHill — Fri, 25 Oct 2019 08:22:56 GMT

Apple has requested that all questions regarding their hardware be directed to them. Contact Apple for support.

Doc

Re: Dual X5550 Xeon’s...won’t address 1333MHz RAM

n_scott_pearson — Fri, 25 Oct 2019 22:37:09 GMT

Al is correct; you must contact Apple. The BIOS is responsible for all memory-related settings and initialization. Their BIOS may not have support for 1333MHz base clock.

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Re: Dual X5550 Xeon’s...won’t address 1333MHz RAM

JDrag5 — Fri, 25 Oct 2019 23:55:13 GMT

Fair enough.

Just to be clear though, the X5550 processors I have do support that RAM speed, yes?

Re: Dual X5550 Xeon’s...won’t address 1333MHz RAM

n_scott_pearson — Sat, 26 Oct 2019 00:00:35 GMT

According to ARK, they certainly do.

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