What's the Difference between Socket AM2 vs 939?

Answer 1

see the link below

Answer 2

Socket AM2
From Wikipedia, the free encyclopedia

This article is part of the CPU socket series

The Socket AM2, renamed from Socket M2 (to prevent using the same name as Cyrix MII processors), is a CPU socket designed by AMD for desktop processors, including the performance, mainstream and value segments. It was released on May 23, 2006, as a replacement for Socket 939 & Socket 754. Although it has 940 pins, it is incompatible with Socket 940, as the older Socket 940 does not support dual channel DDR2 RAM. DDR2 can transfer more data per clock cycle while drawing less power than DDR memory, which the previous Socket 939 supported. AnandTech reported that Socket AM2 system performance was 0-7% faster than Socket 939 equivalents with most applications about 2% faster [1][2], despite having over 30% greater memory bandwidth due to DDR2 support. While future samples and the final product may prove to be faster, significant gains are not expected until later revisions take advantage of the surplus bandwidth.

The first processor cores to support socket AM2 are the single-core Orleans (Athlon 64) and Manila (Sempron), and the dual-core Windsor (Athlon 64 X2 and Athlon 64 FX). All processors on Socket AM2 were developed with 90 nm technology and include SSE3.

Socket AM2 is a part of AMD's next generation of CPU sockets, along with Socket F for servers and Socket S1 for mobile computing.

AMD has announced that Socket AM3 processors will be able to run on Socket AM2 motherboards, but not vice-versa (ie: a Socket AM2 chip cannot run on a Socket AM3 motherboard). This is because AM3 processors will have a new memory controller supporting both DDR2 and DDR3 RAM on them, allowing backwards compatibility with AM2 motherboards, but since AM2 processors lack the new memory controller, they will not work on AM3 motherboards.

Answer 3

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This has been a long time since I have had to tell the difference from the two. If I do recall, the primary difference between the two styles is that the AM2+ has hypertransport of 3.0 (where as AM2 only had 2.0) and that the AM2+ has a split power pane for the cpu cores and the memory (there was just one power pane to control both on a AM2 chip). AM2+ cpus considered better as the hypertransport can be almost double on a AM2+ then that of a AM2 cpu. Both of the chips work on a Socket AM2 (940 pin). Mobos usually have the AM2/AM2+ on them as both cpu chips would work on the board and fit in the same socket. However, most AMD cpus are now AM2+.

Answer 4

939 Socket

Answer 5

And in case you don't wanna read a book but still wanna know the right answer, 939 uses DDR, AM2 uses DDR2. That is pretty much it.

Answer 6

Or incase you don't want to read for 5 minutes.

AM2 is newer and better. 939 is oldschool and sucks.