Athlon 64FX

[Soulburner]

Yup voltage requirements are different, the slot is different (200 something pin vs 184 pin) and the memory controller is on the CPU. You need to make a whole new system basically.

[weta]

<center>Athlon 64 sockets explained
Reasons behind 754, 939 and 940 pins</center>
It's a puzzle that has been irritating many AMD-watchers for a good little while. Ever since the company announced that the Athlon 64 would come in three different pin counts, everyone has wanted to know why. It seemed to defy logic.
The Opteron uses 940 pins so it might have made some sense to stick with that. The socket allows for two banks of memory. A 754 pin socket makes reasonable sense too, it only allows a single bank of memory but there are some obvious advantages like lower cost. Why mess up the whole thing by introducing a socket with 939 pins?

At the technical symposium following the Athlon 64 launch, Mike Goddard, AMD Director of Technical Marketing of the firm's Computation Products Group, explained it in a way that it has left almost as many questions unanswered. But the long and the short of it is that Socket 940 requires a 6 to 9 layer motherboard and Socket 939 only requires a 4 layer design, making the motherboards much cheaper for chips using the latter.

Goddard is a seriously technical guy, he comes from a background of designing chips himself and knows a thing or two. He said that Socket 939 would allow later Athlon FX chips to use standard DDR memory rather than the current requirement for ECC registered DDR.

The Inquirer

[JSR]

and the 939 is dual channel as well................the only thing, it can't beat the a64 3200 pricewise..............and from firingsquads analysis, other than bandwidth, the two (fx/a64) run about as fast............so, 530 for a 64 and a mobo w/ unregistered ram, even though it'd not dual channel , i'm lookin' at

[syx]

What you say is right JSR, but i think it is too early to compare price/performance ration of these procs. i'll wait to see how they do in the futur, and wish that AMD will keep us in mind, enthousiasts who like cheap processors with high overclockability!!!!: peace2:

And for the coming FX procs. on socket 939 using standard DDR i say WOOHOOO!!:D

[Soulburner]

Also remember that the FX has been benchmarked on the nForce3 boards, which are not running up to par yet. They are only running at a 600mhz Hypertransport link, where they Vias are running the full 800mhz. Look to see better nForce/FX performance later.

[syx]

Right now the better choice for a AMD FX is a VIA motherboard, but in the futur, we will see if N-Force 3 gets to the top like N-Force 2!:thumb:

[Sovereignty]

It's been mentioned before, but via's downfall was always the memory controller. Now that it's on-die, via has one less thing to screw up. I think they're gonna retake the lead as the AMD chipset performance leader because of that.

[JSR]

here's the link http://www.xbitlabs.com/news/chipset...926082054.html

[aznx]

any one of yall ever think, that maybeee, the athlon64/fx already has ddr2 built in? ;)

[Sovereignty]

No.

[JSR]

look in the windows forum for a new post by yours truly regarding the new os for a64/fx, otherwise here are a slew of new reviews with the release of a64/fx http://www.bluesnews.com/cgi-bin/boa...threadid=44355

[JSR]

here is an article speculating about amd's ability to ramp up production as vendors are pessimistic about amd's ability to deliver the goods

http://www.forbes.com/2003/10/06/1006amdpinnacor.html?partner=yahoo&referrer=

[kane2g]

would the single cpu mobos support both 940 and 939 pins? :confused:

[JSR]

it's just that the 939 is dual channel

[Wiggo]

would the single cpu mobos support both 940 and 939 pins? :confused:

To start of with yes but once the modified 939pin core comes out early next year then no. Early Athlon FX buyers will only be able to use Opteron CPU's as future upgrades for their present mobo's.