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AMD sockets?

joeyck

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Okay I have another thread open on System builders advice and some one said I can run a AM3 CPU on a AM2/+ motherboard? Is that true?

The cpus in mind are :

AMD Phenom II X4 955 Black Edition Deneb 3.2GHz - $159

or

AMD Phenom II X4 940 Black Edition Deneb 3.0GHz - $125
 
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can get specific but yes it's true.
that's the "+" in AM2+ from what i understand,
my M3A79-t deluxe is one of the mobos that can do that, and i have a phenom ii 940 in it
 

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Not all AM3 cpu's can be used in all AM2+ motherboards. Be sure to look on the motherboards home page to see which CPU's they support.
 
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Okay I have another thread open on System builders advice and some one said I can run a AM3 CPU on a AM2/+ motherboard? Is that true?

The cpus in mind are :

AMD Phenom II X4 955 Black Edition Deneb 3.2GHz - $159

or

AMD Phenom II X4 940 Black Edition Deneb 3.0GHz - $125

Assuming the appropriate BIOS version supporting the CPU exists for your board, then you can run an AM3 CPU in an AM2+ motherboard, as the AM3 CPUs include, currently, a DDR2 memory controller.
 
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can get specific but yes it's true.
that's the "+" in AM2+ from what i understand,
my M3A79-t deluxe is one of the mobos that can do that, and i have a phenom ii 940 in it

The Phenom II 940 BE is not an AM3 chip.
 

joeyck

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lol ur right i didn't c that, shoot i could just settle with that then, the 955 is .2GHZ faster but has 2less MB and the 940 is cheaper as well
 

de.das.dude

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AM3 in a AM2 / AM2+ motherboard will give a lower hypertransport speed, i suggest you look up ur mobo's CPU support list.
 
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AM3 in a AM2 / AM2+ motherboard will give a lower hypertransport speed, i suggest you look up ur mobo's CPU support list.

False. Or, more correctly, not entirely true. It depends on the motherboard, pretty much. The older 1000Mhz HT ones will, but the newer ones with faster HT links will not.
 

de.das.dude

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False. Or, more correctly, not entirely true. It depends on the motherboard, pretty much. The older 1000Mhz HT ones will, but the newer ones with faster HT links will not.

Actually if its a pure AM2/AM2+ mobo, the HT drops down to 1000MHz, hence ur saying "the older ones will".
The highest HT for AM3 is 2600MHz to 3000MHz.

the ECS A785GM-M(DDR3) supports full 3000MHz, and the
Gigabyte MA74GM-SP(DDR2) supports 2600MHz.
 

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Hey is the gigabyte good?

i want to buy it.
 
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pure AM2/AM2+ mobo

What's a pure AM2/AM2+ mobo ? AM2/AM2+ is a socket, not a chipset. The max HT speed of a board is defined by the chipset it uses, not the socket it has.

The highest HT stock clocks for AMD desktop CPUs seems to be 2000Mhz (4000GT/s) anyway.
 

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@ Yukikaze
pure AM2/AM2+ means mobos specifically designed for the optimum use of AM2/AM2+ socket CPUs.

2000Mhz is Highest for HT2, HT3 is here that gives 3000MHz, check out the mobos i mentioned.
 

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AM2+ was designed for AM2+ processors, but yes, AM3 processors generally work in AM2+ boards. IIRC it's because of the memory. AM2+ was designed to work with DDR2 and AM3 was designed to work with DDR3. You can't use AM2+ in AM3 boards because AM2+ processors don't have DDR3 memory controllers (and it won't physically fit :p), but you can use AM3 processors in AM2+ boards because AM3 processors are primarially designed to work with DDR3, but they have the ability to use DDR2 too.
 
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@ Yukikaze
pure AM2/AM2+ means mobos specifically designed for the optimum use of AM2/AM2+ socket CPUs.

2000Mhz is Highest for HT2, HT3 is here that gives 3000MHz, check out the mobos i mentioned.

"designed for the optimum use of AM2/AM2+ socket CPUs" is a nonsense definition, as there is no evidence that AM3 processors suffer in those boards.

HT3 may give 3000Mhz, and there may be motherboards with such support, but can you show me an AMD desktop CPU with a 3000Mhz stock HT speed ? If not, then your statement about lower HT speeds in AM2+ boards is moot if the AM2+ boards can support the native HT speeds of AM3 processors.
 
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