Can I put a Phenom x4 into THIS AM2+ MOBO?

JumBie

Golden Member
May 2, 2011
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I have a ASUS M2N78-LA that is used in an HP desktop and renamed Viola-GL8E. Information on this board can be found here: http://h10025.www1.hp.com/ewfrf/wc/document?cc=us&lc=en&docname=c01421635#N149

According to the website, under CPU upgrade, it makes no mention of AM3+ processors such as x4 955. However, information is conflicting about whether or not I can use an AM3+ cpu in an AM2+ motherboard. I guess my question to everyone here is, can I or can I not use a phenom x4 processor in this particular motherboard. Thanks.
 

TeknoBug

Platinum Member
Oct 2, 2013
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There are a couple Phenom II X4's that work with AM2+, look for a 920 or 940, the 955 is strictly AM3 as far as I can remember.
 

coolpurplefan

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Mar 2, 2006
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As a passing comment, the i5-4690 is about 2 times as fast as an AMD X4 Phenom 965 (maybe equivalent would be E8500). Even the i3 processors are probably around 50% faster (than Phenom 965/E8500). At least according to the gaming benchmarks I've seen.
 

JumBie

Golden Member
May 2, 2011
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There are a couple Phenom II X4's that work with AM2+, look for a 920 or 940, the 955 is strictly AM3 as far as I can remember.

So the x4 940 is a AM2+ cpu, which should theoretically work in the mobo, however on the website it makes no mention of the phenom 2 processors as an upgrade.
 

DominionSeraph

Diamond Member
Jul 22, 2009
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AM3 processors are backwards compatible. (I have an AM3 945 in an AM2 board.) The issue is he doesn't have BIOS support.
 

jhu

Lifer
Oct 10, 1999
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That processor will work in your motherboard.

Here is the caveat:

If the BIOS supports the processor, then it will work as you expected.

If the BIOS does not support the processor, then it will probably be seen as a dual-core processor and be limited to 800 MHz. The computer will still work. Well, at least this is what happened when I put a Phenom IIx6 1045T into a motherboard that didn't support it.
 

JumBie

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May 2, 2011
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So even if its a AM2+ CPU (940), this motherboard in particular still may not support it, even if its an AM2+ mobo? God AMD, could they make this shit anymore complicated.
 

JumBie

Golden Member
May 2, 2011
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It supports 1st gen Phenoms, no too sure about 2nd.

lol....god why cant AMD just keep this shit simple like intel. One socket, all mobos of that socket support said cpu, this crap where an AM2+ mobo MAY or MAY NOT support a AM2+ CPU is ridiculous.
 

Deders

Platinum Member
Oct 14, 2012
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lol....god why cant AMD just keep this shit simple like intel. One socket, all mobos of that socket support said cpu, this crap where an AM2+ mobo MAY or MAY NOT support a AM2+ CPU is ridiculous.

It was supposed top be an upgradable platform, I had an AM2+ board for a quite a while, but I couldn't upgrade to a Phenom because the bios capacity was too small. Obviously something they didn't foresee.

Even though a near identical board from Foxconn managed to cram the info into a smaller bios space, EVGA never bothered to do the same, so I switched to Intel hoping that a new socket would mean years of upgradability. Lynnfield was discontinued less than a year later.
 

DominionSeraph

Diamond Member
Jul 22, 2009
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lol....god why cant AMD just keep this shit simple like intel. One socket, all mobos of that socket support said cpu, this crap where an AM2+ mobo MAY or MAY NOT support a AM2+ CPU is ridiculous.

Intel needs BIOS support as well.
If you wanted upgradability you shouldn't have gone with an OEM board.
 

NTMBK

Lifer
Nov 14, 2011
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lol....god why cant AMD just keep this shit simple like intel. One socket, all mobos of that socket support said cpu, this crap where an AM2+ mobo MAY or MAY NOT support a AM2+ CPU is ridiculous.

Yeah, it was great how Intel let all LGA775 processors run in any LGA775 socket motherboard. Oh wait, hang on...
 

VirtualLarry

No Lifer
Aug 25, 2001
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lol....god why cant AMD just keep this shit simple like intel. One socket, all mobos of that socket support said cpu, this crap where an AM2+ mobo MAY or MAY NOT support a AM2+ CPU is ridiculous.

You mean like Intel, on 775, where one socket might support Pentium, Celeron, Pentium D, Celeron D, Core2, or Core2 45nm, depending on VRD spec and mobo design, and BIOS?

Trust me, Intel is no better.
 

MeldarthX

Golden Member
May 8, 2010
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what's the model number of your machine - there we can say if you can use PII or just P processor.....
 

pyjujiop

Senior member
Mar 17, 2001
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lol....god why cant AMD just keep this shit simple like intel. One socket, all mobos of that socket support said cpu, this crap where an AM2+ mobo MAY or MAY NOT support a AM2+ CPU is ridiculous.

This has nothing to do with AMD. Any AM2+ motherboard will physically support any AM3 (but not AM3+) CPU, even a Phenom II X6 1100T. Whether or not the motherboard has BIOS support and strong enough VRM's to power it are up to whoever made the motherboard.

And if you think Intel is any more user-friendly when it comes to this, you've living in fantasy-land. Socket 775 was the worst case of "socket-roulette" in the history of x86 computing.
 

BUnit1701

Senior member
May 1, 2013
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This has nothing to do with AMD. Any AM2+ motherboard will physically support any AM3 (but not AM3+) CPU, even a Phenom II X6 1100T. Whether or not the motherboard has BIOS support and strong enough VRM's to power it are up to whoever made the motherboard.

And if you think Intel is any more user-friendly when it comes to this, you've living in fantasy-land. Socket 775 was the worst case of "socket-roulette" in the history of x86 computing.

This. All AM3 Phenom IIs have both DDR2 and DDR3 IMCs, and will work on either platform (so long as the motherboard can handle the power requirements)
 

TeknoBug

Platinum Member
Oct 2, 2013
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lol about the LGA775, I remember i5 750/760 wouldn't work with most existing 775 boards.
 

JumBie

Golden Member
May 2, 2011
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Okay, so I am seeing quite a bit of different opinions here. Some are saying I can pop a 9850 in there, others are saying that I could toss a x6 in there. Does anyone have a definite answer for me here? I would hate to go out and grab a cpu only to have it not work on this mobo.
 

Deders

Platinum Member
Oct 14, 2012
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I wouldn't risk it personally, the evidence we have points to just 1st generation Phenoms, with no mention of 2nd gen in the bios updates.
 

DominionSeraph

Diamond Member
Jul 22, 2009
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Okay, so I am seeing quite a bit of different opinions here. Some are saying I can pop a 9850 in there, others are saying that I could toss a x6 in there. Does anyone have a definite answer for me here? I would hate to go out and grab a cpu only to have it not work on this mobo.

Nobody has said you can put an X6 in there.