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Will this work? MacPro 1,1 and Xeon X5355

H

Hammer59

macrumors newbie
Original poster
Dec 15, 2013
5
0
I have a MacPro 1.1 and I want to upgrade the processors on it. Found this intel Xeon X5355 - 2.66 GHz - 4 core - LGA771 Socket - for ProLiant BL460c at a decent price. Can anybody tell me if this processors will work with my computer. Already upgraded the firmware to 2.1
Thanks
 
Last edited by a moderator:
Hammer59 said:
I have a MacPro 1.1 and I want to upgrade the processors on it. Found this intel Xeon X5355 - 2.66 GHz - 4 core - LGA771 Socket - for ProLiant BL460c at a decent price. Can anybody tell me if this processors will work with my computer. Already upgraded the firmware to 2.1
Thanks
Click to expand...

Short answer = Yes

Not so short answer = Yes, you need a matched pair.

Longer answer = Ditto the above, plus you will have noticed various steppings being available denoted by 'SLAED' or 'SLAC4' or similar, after the model numbers - Ideally the steppings should match, but in the early days of processor upgrades in the Mac Pro 1,1 it was found that mismatched steppings did work most of the time.

If i've been unclear (as usual! :)) get back to me.

-Rob
 
Thank you Robert for your answer. I have 1 more question tho. I am going to order this processors from a company that sells components from old servers. If I am going to tell them that I need a matching pair will it be enough? I mean, they should know what I want without going into more details, right?
Thanks again
 
Hammer59 said:
If I am going to tell them that I need a matching pair will it be enough?
Click to expand...
That should do it. Tell them you want SLAEGs if possible, as that's the last stepping with dramatically reduced power consumption in idle states.
 
OK guys, thanks again for your help. I'm going to order them, asking them for a matching pair with SLAEG if possible. Was also looking for a video card upgrade. Right now I have the Radeon HD 2600 XT, but since I want to switch to Maveriks, I understand that a more powerful card is recommended. If I get a Radeon 5770 PC version, are this cards coming with the power cable? I know that the Mac version of the card comes/uses that power cable, but have no clue about the PC ones. And since "Zeus" is no longer developed, is there any other method to flash the 5770?
 
Hammer59 said:
OK guys, thanks again for your help. I'm going to order them, asking them for a matching pair with SLAEG if possible. Was also looking for a video card upgrade. Right now I have the Radeon HD 2600 XT, but since I want to switch to Maveriks, I understand that a more powerful card is recommended. If I get a Radeon 5770 PC version, are this cards coming with the power cable? I know that the Mac version of the card comes/uses that power cable, but have no clue about the PC ones. And since "Zeus" is no longer developed, is there any other method to flash the 5770?
Click to expand...

On the netkas forum there is a dedicated thread on flashing/updating 5770/5870s using the tool hwojtek detailed above - just click the blue text in his post and it should download.

btw

You WILL need a Mac power cable - It may be sold as a Power Mac G5 video card power cable, or a Mac Pro video card power cable. The Mac Pro itself will only come with the vid card cables for the card it shipped with as std - the 2600 didn't need a cable so… you know what you need.
 
Robert Davies said:
On the netkas forum there is a dedicated thread on flashing/updating 5770/5870s using the tool hwojtek detailed above - just click the blue text in his post and it should download.
Click to expand...

A quick advice though: the OP will definitely need a FreeDOS boot image (I am not quite sure if it would boot from USB or not), sure as hell it boots from a CD, so with a bit of tinkering, OP can burn a CD with FreeDOS and ATIFlash and firmware file, boot from it, reflash the graphic card, reboot and he'll be all set. The card will work in FreeDOS even if not flashed, so it is really easy.
 
Robert Davies said:
Short answer = Yes

Not so short answer = Yes, you need a matched pair.

Longer answer = Ditto the above, plus you will have noticed various steppings being available denoted by 'SLAED' or 'SLAC4' or similar, after the model numbers - Ideally the steppings should match, but in the early days of processor upgrades in the Mac Pro 1,1 it was found that mismatched steppings did work most of the time.

If i've been unclear (as usual! :)) get back to me.

-Rob
Click to expand...

I am also looking into updating my MP 1,1 with 2x5355's. I've been reading quite a lot about it. One thing is still unclear to me though: what exactly is a matched pair? does that only mean that both need to be of the same model (e.g. SLAED)? Currently I've got two offers for 1x 5355 each and I am wondering whether I can mix them. I saw pictures of the two processors and both read the same:

Intel 05 x5355
Intel Xeon
SLAEG Costa Rica
2.66GHZ/8m/1333
3752....

Greetings!
 
Last edited:
hannibal2 said:
I am also looking into updating my MP 1,1 with 2x5355's. I've been reading quite a lot about it. One thing is still unclear to me though: what exactly is a matched pair? does that only mean that both need to be of the same model (e.g. SLAED)? Currently I've got two offers for 1x 5355 each and I am wondering whether I can mix them. I saw pictures of the two processors and both read the same:

Intel 05 x5355
Intel Xeon
SLAEG Costa Rica
2.66GHZ/8m/1333
3752....

Greetings!
Click to expand...

Well, technically a matched pair of processors means they both have the same S-Spec .

For the X5355 Xeon processor , there are three different Mac compatible production grade S-Specs :

SL9YM , SLAC4 , SLAEG .

You should really use matched pairs, as each version has specific characteristics . You might lose some characteristics if you mix and match them in an installation .

By the way, you are advised to avoid Engineering Samples due to undocumented errata . These have a different S-Spec designation .
 
Machines said:
Well, technically a matched pair of processors means they both have the same S-Spec .

For the X5355 Xeon processor , there are three different Mac compatible production grade S-Specs :

SL9YM , SLAC4 , SLAEG .

You should really use matched pairs, as each version has specific characteristics . You might lose some characteristics if you mix and match them in an installation .

By the way, you are advised to avoid Engineering Samples due to undocumented errata . These have a different S-Spec designation .
Click to expand...

Thanks for your reply,

ok. So if I am getting two SLAEGs (even though from two different dealers) there shouldn't be a problem? I thought maybe there is something else to a matched pair than the S-Specs. Maybe there are different 'batches' of them so that you can only use e.g. two 5355s from March 2006 or so. So if the two processors read the same as mentioned in my previous post they should work fine together, right?
 
For the X5355 Xeon processor , there are three different Mac compatible production grade S-Specs :
SL9YM , SLAC4 , SLAEG .........

On the same theme, I'm thinking of using E5345 since they're cheaper. The model numbers there appear to be SL9YL, SLAC5, SLAEJ.

Are all those Mac compatible?
 
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