peach1971
11-30-2007, 07:19 PM
and ask them if the new Phenom stepping (which will fix the >2.6 GHz bug) will also fix the northbridge/L3 clock bug?
Or is this bug a chipset matter which will be fixed by BIOS updates?
Or do we have to wait for another AMD chipset????? :banghead:
It´s already 08:00 p.m. here, so they´re no more available for today on the phone.
AMD Headquarters:
One AMD Place
P.O. Box 3453
Sunnyvale, CA 94088-3453
Tel: 408-749-4000
By region > http://www.amd.com/us-en/Corporate/AboutAMD/0,,51_52_502,00.html
The issue again:
Socket-AM2+ motherboards, most of which are based on AMD's new 790FX chipset, were supposed to bring a tangible performance increase when paired with a Phenom processor. Phenom's L3 cache and North Bridge work on the same power plane, one separate from the rest of the CPU. Socket-AM2+ enables the use of two separate voltages, one for the L3 cache/NB and one for the rest of the CPU, whereas Socket-AM2 motherboards run the entire chip at the same voltage. The original plan was for Socket-AM2+ motherboards to run the L3 cache/NB at a higher frequency than the rest of the chip, unfortunately it looks like AMD wasn't able to make that happen.
Currently, the L3 cache/NB on these chips runs at a fixed frequency that's actually lower than the rest of the CPU frequency: 2.0GHz. We tested Phenoms running from 2.2GHz all the way up to 2.6GHz, and in all cases the L3 cache and North Bridge ran at 2.0GHz. We're not sure if this will ever get fixed, but it's somewhat disappointing as it was supposed to be a major reason for upgrading to Socket-AM2+ (but it's good news for current AM2 owners). http://www.anandtech.com/showdoc.aspx?i=3153&p=4
Or is this bug a chipset matter which will be fixed by BIOS updates?
Or do we have to wait for another AMD chipset????? :banghead:
It´s already 08:00 p.m. here, so they´re no more available for today on the phone.
AMD Headquarters:
One AMD Place
P.O. Box 3453
Sunnyvale, CA 94088-3453
Tel: 408-749-4000
By region > http://www.amd.com/us-en/Corporate/AboutAMD/0,,51_52_502,00.html
The issue again:
Socket-AM2+ motherboards, most of which are based on AMD's new 790FX chipset, were supposed to bring a tangible performance increase when paired with a Phenom processor. Phenom's L3 cache and North Bridge work on the same power plane, one separate from the rest of the CPU. Socket-AM2+ enables the use of two separate voltages, one for the L3 cache/NB and one for the rest of the CPU, whereas Socket-AM2 motherboards run the entire chip at the same voltage. The original plan was for Socket-AM2+ motherboards to run the L3 cache/NB at a higher frequency than the rest of the chip, unfortunately it looks like AMD wasn't able to make that happen.
Currently, the L3 cache/NB on these chips runs at a fixed frequency that's actually lower than the rest of the CPU frequency: 2.0GHz. We tested Phenoms running from 2.2GHz all the way up to 2.6GHz, and in all cases the L3 cache and North Bridge ran at 2.0GHz. We're not sure if this will ever get fixed, but it's somewhat disappointing as it was supposed to be a major reason for upgrading to Socket-AM2+ (but it's good news for current AM2 owners). http://www.anandtech.com/showdoc.aspx?i=3153&p=4