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Opteron and crappy FSB
- Thread starter SWE_HELIX
- Start date
- Joined
- Jun 8, 2002
- Location
- Dunstable, uk
because fsb isnt the be-all and end-all. look at the benchs for the opterons. they are killing p4's despite their "Pathetic 166MHZ FSB"
- Joined
- Feb 16, 2001
- Location
- Cambridge England
OPTERON HAS NO FSB! the FSB is traditionally what connects the northbridge to the CPU as their is no northbridge thre is no FSB. The whole idea is to have the memmory controller running at full speed to reduce latency hence no multiplyers. It does have the hypertransport bus to connect to PCI bus, AGP e.t.c. which is 6.4GBps
- Joined
- Jun 8, 2002
- Location
- Dunstable, uk
its not just raw bandwidth that matters you know. the entire amd range of cpus simple dont work like that. p4's love all the memory bandwidth they can get. opterons, however, rely on the amount of work they do per cycle. thats why a 1.8ghz opteron is faster than a 3.06ghz p4.
to be honest, i couldn't give a rats *** about memory bandwidth. i'll i care about is overall performance, and thats where the opterons excell
to be honest, i couldn't give a rats *** about memory bandwidth. i'll i care about is overall performance, and thats where the opterons excell
- Joined
- Aug 21, 2002
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- Fort Wayne, IN
you can overclockSWE_HELIX said:
- Joined
- Jul 29, 2001
First of all its not 166MHz but 200, second of all its dual channel 200MHz, which translates into 400 double pumped Mhz, thus 800FSB, not 333. And from what I've seen it still has sort of multies, and you still can select speed in the BIOS so if the chips will be unlocked I don't think that OCing will be a problem, it might just get much less flexible than it was, when we actually had both FSB and multiplier
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- Dec 23, 2002
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- Doylestown, PA
If you look at the Operton boards, there is no NB and I guess there is no FSB, since now the cpu can take directly to the memory, cutting out the NB middleman.
- Joined
- Jul 29, 2001
Yea I know there's no concrete FSB, but there's still the memory B/W limit which is either 6.4 or 5.4GB/s which is the equivalent to double channel 400DDR or 333DDR not sure which one.
When I come to think of it, I think the guy in the post saying that the 166MHz FSB is lame was right, but its actually a 667FSB.
And the CPU has speed increments of 100 MHz each step selectable from the BIOS
When I come to think of it, I think the guy in the post saying that the 166MHz FSB is lame was right, but its actually a 667FSB.
And the CPU has speed increments of 100 MHz each step selectable from the BIOS
- Thread Starter
- #12
Ok, thanks The Coolest.. But this review says that the Opteron uses 333MHz memory.. http://www.aceshardware.com/read.jsp?id=55000252
But it will probably get faster soon
And i really hope that it is real Dual Channel and not nForce2 style dual channel wich only makes my computer harder to overclock.. I need 2,8V to keep my 1gig 333MHz memory at 400 when I am using dual but only 2,6V in single mode...
But it will probably get faster soon
And i really hope that it is real Dual Channel and not nForce2 style dual channel wich only makes my computer harder to overclock.. I need 2,8V to keep my 1gig 333MHz memory at 400 when I am using dual but only 2,6V in single mode...
There is no FSB. There is a hypertransport link that replaces it that transfers 6.4GB/S . Single CPU configs will have support for dual channel ddr400 while dual CPU Athlon 64's will have to share it as the hypertranport has to communicate with the other cpu , components, and the memory while on single cpu configs it only does the memory and components
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- Sep 28, 2002
- Location
- Columbus, Ohio
Does FSB really matter with this CPU, or you are still walking in the past....technology wise
- Joined
- Dec 23, 2002
- Location
- Doylestown, PA
I am pretty sure there is no "FSB" and it is a fixed data transfer rate like sworkhard said.
- Joined
- Apr 18, 2003
- Location
- Neptune Beach, FL
Who would be dumb enough to even buy a Opteron, considering that there new, and buggy.
- Joined
- Dec 23, 2002
- Location
- Doylestown, PA
xlgimmewarlx said:
Shhhhh, we want someone to buy one so we can have them test it and come back with the results.
- Joined
- Feb 14, 2003
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- Canada
** Just for the record, it was stated the there's no FSB 6 times **
- Joined
- Feb 2, 2001
- Location
- Roanoke, VA
lynx is right, I have been watching the AMD Opteron for a while waiting for it to be released, and it dosn't really have a front side bus. AMD describes it as the FSB being the same speed as the processor itself.Lynx said:
- Joined
- Apr 12, 2003
- Location
- Hawaii
they 1mb cache.........
