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Med1cated
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CPU recommendation for an HP Z400

Z400
Microsoft Windows 10 (64-bit)

I was wondering how many have used the Xeon X5670 or better as an upgrade. But through all the comments it appears nobody is using that series as an upgrade. Why?

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CPU recommendation for an HP Z400

Below from my records are the X56xx and W36xx processors of interest, number of cores, clock speed, max QPI GT/s speeds, number of QPI links (you need only one QPI link for a single processor Z400, but it can run with a 2 QPI link processor), max wattage, fastest memory performance, sSpec code to search for in eBay (I only buy expensive processors from well rated US sellers), the price on introduction by Intel, and the current price on eBay 9/12/17 for the lowest US seller's buy it now price with shipping included:

 


x5670 6 cores 2.93 GHz 12MB cache 6.4 GT/s QPI 2 QPI links 95W max TDP DDR3 1333 SLBV7 1445.00 33.00

 

x5680 6 cores 3.33 GHz 12MB cache 6.4 GT/s QPI 2 QPI links 130W max TDP DDR3 1333 SLBV5 1665.00 60.00

 

x5690 6 cores 3.46 GHz 12MB cache 6.4 GT/s QPI 2 QPI links 130 max TDP DDR3 1333 SLBVX 1665.00 115.00

 

w3690 6 cores 3.46 GHz 12MB cache 6.4 GT/s QPI 1 QPI link 130W max TDP DDR3 1333 SLBW2 1000.00 120.00

 

So, best price/performance in my mind would be the X5680, but what I bought because I knew others had succeeded and I wanted to do the experiment was the X5690.  Most Z400s came with the "Performance" larger heatsink/fan to cool up to 130 W processors (463981-001 part number on eBay) so you probably already have one of those.  If you only have a 95W "Mainstream" heatsink/fan and are on a tight budget then that would swing the recommendation somewhat over to the X5670.

 

The key thing is to make sure you have the later version of the Z400, which has 6 rather than 4 memory slots, and the later boot block date posted about here in the forum.  You must have that to reliably run the processors listed above, not the first version of the Z400.

 

 

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MtothaJ
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CPU recommendation for an HP Z400


@SDH wrote:

 

The key thing is to make sure you have the later version of the Z400, which has 6 rather than 4 memory slots, and the later boot block date posted about here in the forum.  You must have that to reliably run the processors listed above, not the first version of the Z400.

 

 


Does 6 memory slots always equate to the new boot block date or are you aware of any instances where despite the 6 ram slots the machine might have the older boot block?

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CPU recommendation for an HP Z400

MtothaJ,

 

Yes, that has been true 100% of the time.  Dan-WGBU, a HP engineer who contributes here with high level accuracy, also mentioned this method to identify the version 2 Z400s.  Another method that has worked is to look at the advertized processor in the workstation..... if it is a W36XX then that indicates it is a version 2 Z400.  Finally, sometimes an eBay seller posts a screen shot of the BIOS screen showing the later boot block date.

 

The version 2 workstations could also run the earlier W35XX processors and some were sold that way.  I just picked up an extra version 2 for slightly under 100.00 USD (including shipping) from eBay that was advertized as havng a W3565 in it.   I got this one for experimenting with partly to see if I can run one of the fastest processors (probably the hexacore) HP certified for the Z600 in it.   Worth a try.....

 

Here is a pic from the ad.  The six memory slots listed at the bottom was the proof I needed.  The seller had blocked out some of the info from that BIOS screen shot, as you'll see:

 

Z400 version 2 (showing 6 DIMM slots).jpgNote the 6 DIMM slots listed... thus it is a version 2 Z400

 

 

 

 

 

 

MtothaJ
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CPU recommendation for an HP Z400


SDH wrote:

 

MtothaJ,

 

Yes, that has been true 100% of the time.  Dan-WGBU, a HP engineer who contributes here with high level accuracy, also mentioned this method to identify the version 2 Z400s.  Another method that has worked is to look at the advertized processor in the workstation..... if it is a W36XX then that indicates it is a version 2 Z400.  Finally, sometimes an eBay seller posts a screen shot of the BIOS screen showing the later boot block date.

 

The version 2 workstations could also run the earlier W35XX processors and some were sold that way.  I just picked up an extra version 2 for slightly under 100.00 USD (including shipping) from eBay that was advertized as havng a W3565 in it.   I got this one for experimenting with partly to see if I can run one of the fastest processors (probably the hexacore) HP certified for the Z600 in it.   Worth a try.....

 

Here is a pic from the ad.  The six memory slots listed at the bottom was the proof I needed.  The seller had blocked out some of the info from that BIOS screen shot, as you'll see:

 

Z400 version 2 (showing 6 DIMM slots).jpgNote the 6 DIMM slots listed... thus it is a version 2 Z400

 

 

 

 

 

 


 

Great, many thanks for confirming - should I ever decide to get one of these this will help immensly in weeding out the older v1 models.

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