update to can't get ram to run at 400

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dawg

Some success!! Mobo is a Chaintech VNF3-250,ram is Buffalotech PC3700.CPU is
retail A64 2800+(1.8ghz) w/512 L2 cache,standard heatsink/fan.
I set HTT to x3(233). Now running FSB at 233.DDR reads 190.I'm not sure how
these readings were arrived at.
CPU-Z shows under "CPU" 2097.2mhz,multi =9 and HTT at 233.Under "Memory" it
reads frequency=190, FSB:DRAM=CPU/11.
CPU voltage is 1.65v. DIMM viltage is 2.8v. I'm kinda surpised this ram is
doing this well at CAS 2.5 I bought it before 200 FSB cpu's were even
available. I still need to run some stabilty tests and games. But 2.1 Ghz is
good for a 1.8ghz air cooled cpu I think.
The 2800+ allows lower multipliers right?
 
Some success!! Mobo is a Chaintech VNF3-250,ram is Buffalotech PC3700.CPU is
retail A64 2800+(1.8ghz) w/512 L2 cache,standard heatsink/fan.
I set HTT to x3(233). Now running FSB at 233.DDR reads 190.I'm not sure how
these readings were arrived at.
CPU-Z shows under "CPU" 2097.2mhz,multi =9 and HTT at 233.Under "Memory" it
reads frequency=190, FSB:DRAM=CPU/11.
CPU voltage is 1.65v. DIMM viltage is 2.8v. I'm kinda surpised this ram is
doing this well at CAS 2.5 I bought it before 200 FSB cpu's were even
available. I still need to run some stabilty tests and games. But 2.1 Ghz is
good for a 1.8ghz air cooled cpu I think.
The 2800+ allows lower multipliers right?
Click to expand...

Yes, but you don't want to lower the multiplier. If anything, you want to
raise the FSB up to 266MHz The cpu shouldn't have any problems running at
9x266 and Ht should work ok at that speed too (3x266). You'd need to set
the base speed of the ram manually to 133MHz to allow for the extra 66MHz
overclock. And make sure the PCI bus is locked.
 
dawg said:
Some success!! Mobo is a Chaintech VNF3-250,ram is Buffalotech PC3700.CPU
is
retail A64 2800+(1.8ghz) w/512 L2 cache,standard heatsink/fan.
I set HTT to x3(233). Now running FSB at 233.DDR reads 190.I'm not sure
how
these readings were arrived at.
CPU-Z shows under "CPU" 2097.2mhz,multi =9 and HTT at 233.Under "Memory"
it
reads frequency=190, FSB:DRAM=CPU/11.
CPU voltage is 1.65v. DIMM viltage is 2.8v. I'm kinda surpised this ram is
doing this well at CAS 2.5 I bought it before 200 FSB cpu's were even
available. I still need to run some stabilty tests and games. But 2.1 Ghz
is
good for a 1.8ghz air cooled cpu I think.
The 2800+ allows lower multipliers right
Click to expand...


Maybe this article
http://www.neoseeker.com/Articles/Hardware/Guides/athlon64oc/index.html
could be of help or offer a few ideas.

Dave
 
Maybe this article
http://www.neoseeker.com/Articles/Hardware/Guides/athlon64oc/index.html
could be of help or offer a few ideas.
Click to expand...
in formative with one exception. The FSB is an HT link. He calls it the
LDT (Lightning Data Transport) bus, which is just the former (working)
name for HT (HyperTransport). So, not only is it out of date terminology,
infering that LDT is the same or differnt name for FSB is just wrong. As
one should know that HT (formerly LDT) technology is a bus type is used in
buses that have nothing to do with with an HT type FSB of the K8. the only
proper name for the FSB is FSB as it refers directly to the bus between
the cpu and chipset. HT (LDT) technology can and is used in many different
applications and not just as a FSB. To put it simple, HT (LDT) refers to a
bus type while FSB refers to a specific bus which can be of any type,
including paralell (like K7's), serial (HT, K8's), or any other kind of
data transport technology. I don't know why this has become such an issue,
nor can I understand why seemingly intelligent people can't understand
this. I guess the blame has to laid on AMD. And I can only guess they
wanted to get rid of the FSB term bacause of the way it's speed has
been so maligned in the competition between them and Intel. But a duck by
any other name is still a duck.:-)
 
Wes Newell said:
Yes, but you don't want to lower the multiplier. If anything, you want to
raise the FSB up to 266MHz The cpu shouldn't have any problems running at
9x266 and Ht should work ok at that speed too (3x266). You'd need to set
the base speed of the ram manually to 133MHz to allow for the extra 66MHz
overclock. And make sure the PCI bus is locked.
Click to expand...

Thanks,
I don't have alot of BIOS options. I don't see where I can lock the PCI bus.
Although there is an option to change AGP.It's set at 66. This must be it?
Not sure I get what you mean about the base ram speed set to 133. RAM
settings in this BIOS are 100,133,166 and Auto. For PC3200 DDR, auto is
supposed to set it to 200 but it doesn't for me.There's also no option to
change CMD. It's locked at 1T.
 
I don't have alot of BIOS options. I don't see where I can lock the PCI bus.
Although there is an option to change AGP.It's set at 66. This must be it?
Click to expand...

I guess. I don't have the board or manual for it.
Not sure I get what you mean about the base ram speed set to 133. RAM
settings in this BIOS are 100,133,166 and Auto. For PC3200 DDR, auto is
supposed to set it to 200 but it doesn't for me.There's also no option to
change CMD. It's locked at 1T.
Click to expand...

Also don't know what auto does on your board, but suspect it's BySpd,
which would set it to 166MHz. You what to use the manual setting of 133MHz.
 
I must be dense Wes. Why should I set FSB to 133 and not 166?
Click to expand...
You said you had PC3200 ram which is rated for a max bus speed of 200Mhz.
If you set the ram to 166 and raise the FSB to 266, the the ram bus would
be at 233MHz. Setting it down to 133MHz would allow it to run within specs
at a FSB of 266MHz.
 
Ok I see.But my ram is actually PC3700 Buffalotech using Winbond chips.
Click to expand...

Well, you may have better luck than me but I've got the same ram and it
won't run at 233MHz. And I lowered all timings and raised voltage to 2.7v.
It would post saying 466, but that's about it. Mybe if I'd set voltage to
2.8v, but I just won't do that. Default is 2.5v and I run it normally at
2.6v for stabilty at 200MHz. Don't worry about not running in sync with
the FSB. it doesn't matter that much.
 
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