Athlon 64 4000+ Clawhammer or San Diego???

[MaadDog]

I am looking to upgrade to the AMD Athlon 64 4000+ processor. However,
I see there are 2 versions of it, the Clawhammer and San Diego. They
appear to be identical with regard to specs. Both socket 939, but the
Clawhammer about $35.00 more. Anyone know the difference?
Recomendations?

Thanks

--

 

[Wes Newell]

I am looking to upgrade to the AMD Athlon 64 4000+ processor. However,
I see there are 2 versions of it, the Clawhammer and San Diego. They
appear to be identical with regard to specs. Both socket 939, but the
Clawhammer about $35.00 more. Anyone know the difference?
Recomendations?

The most important difference is that the clawhammer is the original core
and the San Diego is the latest. By all means get the San diego. The new
one will run cooler and faster with less power, has additional instruction
in the instruction set and whatever else is new. Just make sure the MB you
buy has bios support for it or it may not boot.

 

[gold fingers]

A topic was posted in alt.comp.hardware.homebuilt. i think the topic
was something about populating all 4 DIMMs with PC-3200s (DDR400).
Someone named TWEEK replied that: It depends on the CPU core you are
using. Prior to the Venice.San Diego core Athlon 64, if you populated
all four DIMM slots with PC3200 ram, the momory would fall back to
PC2700 speeds. It is a limitation of the memory controller built into
the cpu in the Winchester and Hammer cores. >>>> I've looked at several
User's Guides for AMDs lately. I always noticed that when all 4 DIMMs
are populated, the memory clock rate defaults to a slower clock rate.
Does the manufacturer default it back because it is not known as to
what CPU someone is going to install? Let's not go there right now. I
hope TWEEK's information helps you make your decision. I'm on my way
now to start a new group. I noticed in some clocking groups that Hyper
Transport isn't mentioned at all. Since Hyper Transport is replacing
FSB, it's time to talk more about it. Later, Gold Fingers

 

[BillL]

A topic was posted in alt.comp.hardware.homebuilt. i think the topic
was something about populating all 4 DIMMs with PC-3200s (DDR400).
Someone named TWEEK replied that: It depends on the CPU core you are
using. Prior to the Venice.San Diego core Athlon 64, if you populated
all four DIMM slots with PC3200 ram, the momory would fall back to
PC2700 speeds. It is a limitation of the memory controller built into
the cpu in the Winchester and Hammer cores. >>>> I've looked at several
User's Guides for AMDs lately. I always noticed that when all 4 DIMMs
are populated, the memory clock rate defaults to a slower clock rate.
Does the manufacturer default it back because it is not known as to
what CPU someone is going to install? Let's not go there right now. I
hope TWEEK's information helps you make your decision. I'm on my way
now to start a new group. I noticed in some clocking groups that Hyper
Transport isn't mentioned at all. Since Hyper Transport is replacing
FSB, it's time to talk more about it. Later, Gold Fingers

Ah, not always. For example I'm running an A64 3200+ (winchester) on a
Gigabyte SLi mobo and the above *did* hold true in that when I had all 4
DIMM sockets populated my PC4000 RAM defaulted to PC2700 speeds. However now
I'm using the latest BIOS I can run the RAM at PC3200 speeds.

Now, I've never been able to run the RAM at PC4000 speeds (despite lowering
HT, raising VDIMM, lowering multipliers etc.) and I think (from reading
around) that has got someting to do with the memory controller on the CPU.

BillL

 

[Chinooks_FURY]

This is an excellent article from THG and gives you all the specs on ALL
CPU's for the given time frame (1993 - present, AMD & Intel)

http://www.tomshardware.com/2005/11/21/the_mother_of_all_cpu_charts_2005/index.html

I have a 4000+ SanDiego overclocked to 2.7 on stock air and it never breaks
50C under full load running for hours. Super chip and very inexpensive. Go
for it . . .

Full System:

SILVERSTONE TJ-03
AMD 4000+ SanDiego
Abit AN8 Ultra
2 GB (2x1) OCZ Platinum DDR 400 (PC 3200) @ 2-3-2-5 2.6v
eVGA Geforce 7800GTX
Seagate Barracuda 7200.8 300GB
Plextor PX-716SA
Creative X-Fi Extreme Music
SILVERSTONE SST-ST60F 600W Modular PSU
Windows XP Pro SP2

 

[grateful gift ermmm]

This is an excellent article from THG and gives you all the specs on ALL
CPU's for the given time frame (1993 - present, AMD & Intel)

http://www.tomshardware.com/2005/11/21/the_mother_of_all_cpu_charts_2005/index.html

I have a 4000+ SanDiego overclocked to 2.7 on stock air and it never
breaks
50C under full load running for hours. Super chip and very inexpensive.
Go
for it . . .

Full System:

SILVERSTONE TJ-03
AMD 4000+ SanDiego
Abit AN8 Ultra
2 GB (2x1) OCZ Platinum DDR 400 (PC 3200) @ 2-3-2-5 2.6v
eVGA Geforce 7800GTX
Seagate Barracuda 7200.8 300GB
Plextor PX-716SA
Creative X-Fi Extreme Music
SILVERSTONE SST-ST60F 600W Modular PSU
Windows XP Pro SP2

I have a 4000+ clawhammer - been great cpu - air cooled and stable at 10*260
using
g.skill ddr ram on 1T...