Can a CPU compatible with Intel's PLGA771 socket work with the LGA771 socket?

[r3h0]

I have a Dell Precision 490 that has a bad motherboard. I may be able to acquire a Precision T5400 with a working motherboard, but it's doesn't have a CPU. So I'm wondering if I can take the Xeon X5365 processors and plug them into the T5400's motherboard. The problem is that as far as I can tell, the CPUs designed for the T5400 support the LGA771 socket type. Since the X5365 is the PLGA771 socket type, I'm not sure the CPU will be compatible with the T5400's motherboard.

I can't find good specs on the T5400 motherboard itself, so I'm working backwards from what I know about the CPUs.

The Xeon X5365 (from my Precision 490) is compatible with the PLGA771 socket and the 5400 chipset. http://ark.intel.com/products/30702/Intel-Xeon-Processor-X5365-%288M-Cache-3_00-GHz-1333-MHz-FSB%29

The Xeon E5430 (on of the standard options on the T5400) is compatible with the LGA771 and the 5400 chipset. http://ark.intel.com/products/33081/Intel-Xeon-Processor-E5430-%2812M-Cache-2_66-GHz-1333-MHz-FSB%29

Any chance that I can use my X5365 processors in the T5400's motherboard? If the two sockets are compatible, is there anything else I need to look at for CPU/motherboard compatibility?

***

Update:

This thread says that the PLGA775 and LGA775 are compatible. Likely the same for the 771's? http://www.tomshardware.com/forum/314303-28-what-difference-lga775-socket-plga775-socket

 

[slomo4sho]

Its probably better up upgrade to a modern CPU and motherboard...

 

[noidea_77]

Bad news. The T5400 comes with the 5400 Chipset, that doesn't support the X53XX cpus: http://en.community.dell.com/support-forums/desktop/f/3514/p/19474941/20223955.aspx

 

[r3h0]

Its probably better up upgrade to a modern CPU and motherboard...

I agree, but money doesn't grow on trees, unfortunately. I'm also stuck with 32 GB of DDR2 RAM that I can't put in a new motherboard, so I'd have to buy that too. And Dell has proprietary power supply connectors, so I might have to get a new PSU also.

I've been trying to figure out what to do since my 490 went bad; I can get a T5400 for $45 (maybe less) so that seems like a no-brainer.

 

[r3h0]

Bad news. The T5400 comes with the 5400 Chipset, that doesn't support the X53XX cpus: http://en.community.dell.com/support-forums/desktop/f/3514/p/19474941/20223955.aspx

That's odd. I didn't think the chipset would be a problem since the Intel link in my post for the X5365 says the Intel 5400 chipset is compatible. And check out the "Compatible Products" section for the 5400 chipset: http://ark.intel.com/products/34474/Intel-5400-Memory-Controller The X5365 is listed there.

 

[slomo4sho]

I agree, but money doesn't grow on trees, unfortunately. I'm also stuck with 32 GB of DDR2 RAM that I can't put in a new motherboard, so I'd have to buy that too. And Dell has proprietary power supply connectors, so I might have to get a new PSU also.

I've been trying to figure out what to do since my 490 went bad; I can get a T5400 for $45 (maybe less) so that seems like a no-brainer.

No it doesn't but selling older components and picking up newer ones should afford you a newer build within the same budget. Considering that DDR2 still sells well on eBay, you should be able to get rid of it relatively easily.

 

[noidea_77]

Bad news. The T5400 comes with the 5400 Chipset, that doesn't support the X53XX cpus: http://en.community.dell.com/support-forums/desktop/f/3514/p/19474941/20223955.aspx

That's odd. I didn't think the chipset would be a problem since the Intel link in my post for the X5365 says the Intel 5400 chipset is compatible. And check out the "Compatible Products" section for the 5400 chipset: http://ark.intel.com/products/34474/Intel-5400-Memory-Controller The X5365 is listed there.

That's definitely odd, because here it is only revering to X5200 and X5400 and moreover says it support PCI-E 2.0 instead of 1.1. I'm confused. http://www.intel.com/content/www/us/en/chipsets/server-chipsets/server-chipset-5400.html

 

[r3h0]

Bad news. The T5400 comes with the 5400 Chipset, that doesn't support the X53XX cpus: http://en.community.dell.com/support-forums/desktop/f/3514/p/19474941/20223955.aspx

That's odd. I didn't think the chipset would be a problem since the Intel link in my post for the X5365 says the Intel 5400 chipset is compatible. And check out the "Compatible Products" section for the 5400 chipset: http://ark.intel.com/products/34474/Intel-5400-Memory-Controller The X5365 is listed there.

That's definitely odd, because here it is only revering to X5200 and X5400 and moreover says it support PCI-E 2.0 instead of 1.1. I'm confused. http://www.intel.com/content/www/us/en/chipsets/server-chipsets/server-chipset-5400.html

Okay, so maybe it does; maybe it doesn't. It sounds like it's not worth the risk, anyway. Thanks for your help. I'll mark yours as the answer.

My original concern was the PLGA771 socket, but I have gathered that the just means "plastic" LGA771, so I'm assuming the sockets are compatible. But, with the doubt about the chipset compatibility, I'll pursue another solution.

 

[r3h0]

I agree, but money doesn't grow on trees, unfortunately. I'm also stuck with 32 GB of DDR2 RAM that I can't put in a new motherboard, so I'd have to buy that too. And Dell has proprietary power supply connectors, so I might have to get a new PSU also.

I've been trying to figure out what to do since my 490 went bad; I can get a T5400 for $45 (maybe less) so that seems like a no-brainer.

No it doesn't but selling older components and picking up newer ones should afford you a newer build within the same budget. Considering that DDR2 still sells well on eBay, you should be able to get rid of it relatively easily.

That's not a bad idea. Thanks for the suggestion. I've got a couple of 470's lying around too. Maybe I can scrounge up enough to build a new one.