CPU Compatibility

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livefornow851

54 posts

Master Geek
+1 received by user: 3

# 173807 7-Jun-2015 09:58

I have two older PC's and am trying to take the best parts from each to make one semi decent machine.

I have an Intel Pentium D 805 2.66Ghz and an Intel Core2 Duo E6550 2.33Ghz. I believe that the Core2 is a better processor and am trying to put it into the machine with the machine with the MSI MS-7101 motherboard which the Pentium D came out of.

Does anybody know if this is a possible combination? Given that both the CPU's have the same socket LGA775.

andrewNZ

2115 posts

Uber Geek
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# 1318586 7-Jun-2015 10:02

Took me about 10 seconds to google and get the answer... now you try.

http://bfy.tw/CvK

Location: Dunedin

livefornow851

54 posts

Master Geek
+1 received by user: 3

# 1318625 7-Jun-2015 11:22

One person supports this post

Not really helpful considering I had already tried this. Thanks for being patronizing.

macuser

2119 posts

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# 1318626 7-Jun-2015 11:30

That isn't the actual name of the motherboard, Look for another number on the motherboard (It's probably 865GM3-V)

If it is the 865GM3-V, then no, the C2D chip won't work at all.

timmmay

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# 1318627 7-Jun-2015 11:35

This page suggests Pentium D support only, no Core2 Duo. You'd have to find the actual manual and read up on CPU support. I can't find it, I tried for a few mins.

Pentium D rates 500 on the benchmark, Core2 is 1500. However the Core2 probably won't work in that motherboard so you'd have to buy a new one, and there's no way that makes financial sense.

macuser

2119 posts

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# 1318629 7-Jun-2015 11:38

This is the best CPU your computer can handle...It still will be slow though...

http://www.ebay.com/itm/Intel-Pentium-D-950-HH80553PG0964M-SL8WP-SL94P-SL95V-SL9K8-CPU-800-3-4-GHz-/141427940635?pt=LH_DefaultDomain_0&hash=item20edc31d1b

andrewNZ

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# 1318630 7-Jun-2015 11:38

One person supports this post

livefornow851: Not really helpful considering I had already tried this. Thanks for being patronizing.

First result was this one http://www.cpu-upgrade.com/mb-MSI/865GVM3-V_(MS-7101).html which contains a pretty comprehensive list of processors (including yours) and whether or not they are supported.

Location: Dunedin

livefornow851

54 posts

Master Geek
+1 received by user: 3

# 1318669 7-Jun-2015 12:35

Cheers. Definitely not worth any upgrades being that it is still an old machine. Thanks for help.

jpoc

844 posts

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+1 received by user: 200

# 1320913 10-Jun-2015 09:40

Personally, I would try it to see what happens.

The big change in LGA775 systems was a boost to the Front Side Bus clock rates.

The motherboard chipsets did not support the full range of FSB clocks. Older ones were slower, newer ones were faster and while there were some chipsets that covered wider ranges, I never came across a motherboard that would work with every possible LGA775 processor.

If you put an old LGA775 CPU into a later and faster motherboard, it will usually not work because the CPU just cannot keep up with the faster FSB and the chipset can go slower.

If you put a C2D or C2Q CPU into an old motherboard, it may actually work but just not run at the higher FSB rates.

You would probably not get the full performance of the chip but I would expect that it would go somewhat faster and also use somewhat less power.

macuser

2119 posts

Uber Geek
+1 received by user: 517

# 1321979 10-Jun-2015 11:39

jpoc: Personally, I would try it to see what happens.

The big change in LGA775 systems was a boost to the Front Side Bus clock rates.

The motherboard chipsets did not support the full range of FSB clocks. Older ones were slower, newer ones were faster and while there were some chipsets that covered wider ranges, I never came across a motherboard that would work with every possible LGA775 processor.

If you put an old LGA775 CPU into a later and faster motherboard, it will usually not work because the CPU just cannot keep up with the faster FSB and the chipset can go slower.

If you put a C2D or C2Q CPU into an old motherboard, it may actually work but just not run at the higher FSB rates.

You would probably not get the full performance of the chip but I would expect that it would go somewhat faster and also use somewhat less power.

Or the most likely scenario of...

No POST

jpoc

844 posts

Ultimate Geek
+1 received by user: 200

# 1324213 13-Jun-2015 21:27

macuser:
jpoc: Personally, I would try it to see what happens.

The big change in LGA775 systems was a boost to the Front Side Bus clock rates.

The motherboard chipsets did not support the full range of FSB clocks. Older ones were slower, newer ones were faster and while there were some chipsets that covered wider ranges, I never came across a motherboard that would work with every possible LGA775 processor.

If you put an old LGA775 CPU into a later and faster motherboard, it will usually not work because the CPU just cannot keep up with the faster FSB and the chipset can go slower.

If you put a C2D or C2Q CPU into an old motherboard, it may actually work but just not run at the higher FSB rates.

You would probably not get the full performance of the chip but I would expect that it would go somewhat faster and also use somewhat less power.

Or the most likely scenario of...

No POST

You may be right but my experience suggests otherwise. I have 5 machines running unsupported CPUs with no problems.