Core 2 Quad on Intel DG33FB mobo possible?

AC2

Junior Member
Oct 1, 2010
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Hi

Wasn't sure whether to post this on the CPU or mobo forum but decided to do it here as this is about the mobo's capabilities (I think !).

I have a fairly old Intel DG33FB mobo running a E7200 C2D proc. High level specs as follows:
- Mobo: LGA775, 800Mhz dual-channel DDR2, GMA 3100 (but have a discrete NVidia card), PCIe 1.0 etc
- CPU: 2.53Ghz, 3MB L2 cache, FSB 1066Mhz, 65W TDP

As per the original mobo tech specs, processor support is as follows:
- Intel® Core™2 Quad processor in an LGA775 socket with a 1066 MHz system bus
- Intel® Core™2 Duo processor in an LGA775 socket with a 1333 or 1066 or 800 MHz system bus
- "This board is designed to support processors with a maximum wattage of 95 W. The processors listed above are only supported when falling within the wattage requirements of the DG33FB board."

Intel then issued a spec update for the board which states:
- Intel® Core™2 Quad processor in an LGA775 socket with a 1066 MHz system bus
- Intel® Core™2 Duo processor in an LGA775 socket with a 1066 or 800 MHz system bus

I guess this updated spec specifies there is no support for C2D 1333Mhz system bus.

If I now go to the Intel site and see the list of processors supported by this board at http://processormatch.intel.com/CompDB/SearchResult.aspx?Boardname=dg33fb it lists:
- C2Q processors with <= 95W TDP but 1333Mhz bus (Q8xxx and Q9xxx)
- C2Q processors with 1066 Mhz bus but > 95W TDP (Q6xxx)

There are no C2Q processors with 1066Mhz bus and <= 95W TDP.

So am I stuck or can I hope to slot in a Q8400 or Q9505, whose TDP is <= 95W but has a 1333Mhz bus?

I'm OK to live with the fact that the C2Q bus will operate below potential, assuming the above mentioned is possible.

Reason for upgade is basically to improve Handbrake/ ffmpeg/ Blender performance. Don't have any issues with single threaded app performance, but wouldn't like to upgrade to a C2Q with lower single threaded performance, so want >=2.53Ghz and preferably >= 3MB L2 cache per core pair (i.e. >= 6MB overall).

Don't want to upgrade the system/ mobo at this point in time.

Thanks!
 

IGemini

Platinum Member
Nov 5, 2010
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I'm not seeing a problem...if you took a really good look at that link you posted it should've answered your question.
 

AC2

Junior Member
Oct 1, 2010
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I'm not seeing a problem...if you took a really good look at that link you posted it should've answered your question.

Well I did look through it a couple of times but I'm not sure what you're referring to! :)

I did spot the Quad Core Xeons (X3230 esp.) that seem to fit the bill. But I don't know if I can get these anywhere any more...
 

IGemini

Platinum Member
Nov 5, 2010
2,472
2
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The only Core 2 Quads you can't put in that board are the really old Q6600/Q6700 cores that are over 95W (100/105 respectively).

So this:

So am I stuck or can I hope to slot in a Q8400 or Q9505, whose TDP is <= 95W but has a 1333Mhz bus?

...is a moot question. The page says those and any other C2Q are supported. You'd have to try hard to find a CPU that isn't supported by the board.
 

AC2

Junior Member
Oct 1, 2010
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...is a moot question. The page says those and any other C2Q are supported. You'd have to try hard to find a CPU that isn't supported by the board.

Thanks for that.

I didn't really trust that link much, seeing how it listed C2Q CPUs that have a TDP > 95W (eg Q6700 with a big 'Fully compatible' tick) as being compatible with the board; thus the question.

The plan is to get a second hand one as the prices of these are still to high for me.
 

KLiK

Junior Member
Jul 21, 2017
3
0
1
Guys, don't know why you didn't consider using Q9400S or Q9550S on that system?

I'm running those currently.