Overclocking advice needed

Archived from groups: alt.comp.hardware.overclocking.amd (More info?)

On Thu, 15 Sep 2005 10:54:36 -0700, Leadfoot wrote:

> Any one know where there is a good guide that will explain what the Hyper
> Transport settings do in relation to overclocking and memory timings
>
The HT speed is a multiple of the FSB clock (CPU clkin). Raise clkin to
233Mhz and HT will raise 33x it multiplier. It's that simple. Current
multipliers are 2-5x for current systems. For 754 systems you want HT at
about 800 MT/s, and 1000 MT/s for 939.

> Athlon 64 3500+ venice retail BP @2700 11X245 1.55vdc P95 stable, not
> stable @11X250, Stock heatsink
>
And that's a Problem? The cpu may not be capable of any higher, or you may
need to lower the Ht multiplier one notch from 5x to 4x. At 5x it's
overclocked too much. 4x would put it right on normal with a 250MHz clock.

> 2 X 512MB Kingston HyperX PC3500 running @158FSB @2.5-6-3-3??? Hyperx
> 3200 is ASUS Qualified bit not HyperX PC3500? Could use some advice on
> whether there is a better choice in a memory upgrade to get better
> memory performance
>
If you set the base memory speed to 166MHz, it would help. I assume the
158FSB above means the memory bus is at 158MHz.

--
KT133 MB, CPU @2400MHz (24x100): SIS755 MB CPU @2330MHz (10x233)
Need good help? Provide all system info with question.
My server http://wesnewell.no-ip.com/cpu.php
Verizon server http://mysite.verizon.net/res0exft/cpu.htm

Archived from groups: alt.comp.hardware.overclocking.amd (More info?)

On Thu, 15 Sep 2005 21:17:14 -0700, Leadfoot wrote:

>
> "Wes Newell" <w.newell@TAKEOUTverizon.net> wrote in message
> newsan.2005.09.15.21.27.53.143615@TAKEOUTverizon.net...
>> On Thu, 15 Sep 2005 10:54:36 -0700, Leadfoot wrote:
>>
>>> Any one know where there is a good guide that will explain what the Hyper
>>> Transport settings do in relation to overclocking and memory timings
>>>
>> The HT speed is a multiple of the FSB clock (CPU clkin). Raise clkin to
>> 233Mhz and HT will raise 33x it multiplier. It's that simple. Current
>> multipliers are 2-5x for current systems. For 754 systems you want HT at
>> about 800 MT/s, and 1000 MT/s for 939.
>
> I think I see what you mean but I'm a little confused, ciuld you give a
> sample equation?
>
I did below. but here's another assuming a 939 CPU. FSB (clkin) at 266MHz.
HT multiplier at default 5x would overclock the HT from default 1000 to
5x266 (1333MHz) and it won't run. Multiplier set to 4x would be HT @1066.
Still alittle over 1000, but would probably work fine at that speed. 3x
would have it @800, and while under the default, you wouldn't notice much
if any performance loss.
>>
>>> Athlon 64 3500+ venice retail BP @2700 11X245 1.55vdc P95 stable, not
>>> stable @11X250, Stock heatsink
>>>
>> And that's a Problem? The cpu may not be capable of any higher, or you
>> may need to lower the Ht multiplier one notch from 5x to 4x. At 5x it's
>> overclocked too much. 4x would put it right on normal with a 250MHz
>> clock.
>
4x example with 250MHz clock above.

>>> 2 X 512MB Kingston HyperX PC3500 running @158FSB @2.5-6-3-3??? Hyperx
>>> 3200 is ASUS Qualified bit not HyperX PC3500? Could use some advice on
>>> whether there is a better choice in a memory upgrade to get better
>>> memory performance
>>>
>> If you set the base memory speed to 166MHz, it would help. I assume the
>> 158FSB above means the memory bus is at 158MHz.
>
> It says 266 (i believe) in the BIOS boot up but 158.8 in cpu-z for sure.
> Running P95 so I don't want to reboot to be sure on the bios screen.
>
Your kidding right. Have the moron MB makers started using the data rate
numbers as bogus clock speeds now too. I'm not sure what to make of this,
but the real spped you want to set the ram to is 166MHz. When you
overclock the cpu FSB to 250MHz, that'll bring the actual ram memory bus
up close to 200MHz

> Is this typical for DDR433 ram?
>
DDR433 ram is rated for 216MHz bus.

--
KT133 MB, CPU @2400MHz (24x100): SIS755 MB CPU @2330MHz (10x233)
Need good help? Provide all system info with question.
My server http://wesnewell.no-ip.com/cpu.php
Verizon server http://mysite.verizon.net/res0exft/cpu.htm

Archived from groups: alt.comp.hardware.overclocking.amd (More info?)

"Leadfoot" <Nospam@nospam.org> wrote in message
news:HYtWe.14944$mH.6455@fed1read07...
>
> "Wes Newell" <w.newell@TAKEOUTverizon.net> wrote in message
> newsan.2005.09.16.06.41.46.813828@TAKEOUTverizon.net...
>> On Thu, 15 Sep 2005 21:17:14 -0700, Leadfoot wrote:
>>
>>>
>>> "Wes Newell" <w.newell@TAKEOUTverizon.net> wrote in message
>>> newsan.2005.09.15.21.27.53.143615@TAKEOUTverizon.net...
>>>> On Thu, 15 Sep 2005 10:54:36 -0700, Leadfoot wrote:
>>>>
>>>>> Any one know where there is a good guide that will explain what the
>>>>> Hyper
>>>>> Transport settings do in relation to overclocking and memory timings
>>>>>
>>>> The HT speed is a multiple of the FSB clock (CPU clkin). Raise clkin to
>>>> 233Mhz and HT will raise 33x it multiplier. It's that simple. Current
>>>> multipliers are 2-5x for current systems. For 754 systems you want HT
>>>> at
>>>> about 800 MT/s, and 1000 MT/s for 939.
>>>
>>> I think I see what you mean but I'm a little confused, ciuld you give a
>>> sample equation?
>>>
>> I did below. but here's another assuming a 939 CPU. FSB (clkin) at
>> 266MHz.
>> HT multiplier at default 5x would overclock the HT from default 1000 to
>> 5x266 (1333MHz) and it won't run. Multiplier set to 4x would be HT @1066.
>> Still alittle over 1000, but would probably work fine at that speed. 3x
>> would have it @800, and while under the default, you wouldn't notice much
>> if any performance loss.
>>>>
>>>>> Athlon 64 3500+ venice retail BP @2700 11X245 1.55vdc P95 stable, not
>>>>> stable @11X250, Stock heatsink
>>>>>
>>>> And that's a Problem? The cpu may not be capable of any higher, or you
>>>> may need to lower the Ht multiplier one notch from 5x to 4x. At 5x it's
>>>> overclocked too much. 4x would put it right on normal with a 250MHz
>>>> clock.
>>>
>> 4x example with 250MHz clock above.
>>
>>>>> 2 X 512MB Kingston HyperX PC3500 running @158FSB @2.5-6-3-3??? Hyperx
>>>>> 3200 is ASUS Qualified bit not HyperX PC3500? Could use some advice on
>>>>> whether there is a better choice in a memory upgrade to get better
>>>>> memory performance
>>>>>
>>>> If you set the base memory speed to 166MHz, it would help. I assume the
>>>> 158FSB above means the memory bus is at 158MHz.
>>>
>>> It says 266 (i believe) in the BIOS boot up but 158.8 in cpu-z for sure.
>>> Running P95 so I don't want to reboot to be sure on the bios screen.
>>>
>> Your kidding right. Have the moron MB makers started using the data rate
>> numbers as bogus clock speeds now too. I'm not sure what to make of this,
>> but the real spped you want to set the ram to is 166MHz. When you
>> overclock the cpu FSB to 250MHz, that'll bring the actual ram memory bus
>> up close to 200MHz
>>
>>> Is this typical for DDR433 ram?
>>>
>> DDR433 ram is rated for 216MHz bus.
>
>
> Ouch I feel like i'm in pre-calculus again ;-)
>
> Thanks Wes
>
>>
>> --
>> KT133 MB, CPU @2400MHz (24x100): SIS755 MB CPU @2330MHz (10x233)
>> Need good help? Provide all system info with question.
>> My server http://wesnewell.no-ip.com/cpu.php
>> Verizon server http://mysite.verizon.net/res0exft/cpu.htm

When you set MAX RAM speed in the BIOS on Asus A8N you are actually setting
a divider not the actual speed it mentions in the BIOS, eg. 400Mhz=1:1.
That doesn't mean the RAM will always run at 400Mhz, but mean it's running
at a ratio of 1:1. I can't remember the other values off hand, simply trust
what CPU-z is telling you. Threw me a first, I think most nForce4's are like
this.

Tony.