• Welcome to Overclockers Forums! Join us to reply in threads, receive reduced ads, and to customize your site experience!

Palit Daytona Graphic Cards volt-modding

Overclockers is supported by our readers. When you click a link to make a purchase, we may earn a commission. Learn More.

DNR

New Member
Joined
Feb 25, 2004
Has anyone volt-moded Daytona Series VGA? I noticed that my Daytona Geforce3 Ti200 128Mb TV has different architecture from nvidias default referrence. So famous xbitlabs volt-modding cannot be applied as there are no SC1175CSW or AMS1505 Voltage regulators.

Can you check the pictures? I've written all the info in chips, that may be responsible for Vcore and Vmem. I've only found info on TL413C and attached it to. Maybe you know where to add shunt resistors?

ps: on the other side there are no chips at all.

I have also noticed that the same chips are on new Daytona Gf4 MX440 128DDR TV VGA's.

thanx for help or any useful links realated to daytona volt-modding.
 

Attachments

  • video000.jpg
    video000.jpg
    59.3 KB · Views: 2,285
TL431C

TL431C
 

Attachments

  • tl431c.jpg
    tl431c.jpg
    28.3 KB · Views: 3,564
Other chips

yup, you was right. On Voltage stabilizators there are makrs (ON) - that is ON Semiconductors ( http://onsemi.com )

I found CS51031 there
but it's function is mystical
" The CS51031 is a switching controller for use in DC–DC
converters. It can be used in the buck topology with a minimum
number of external components. The CS51031 consists of a VCC
monitor for controlling the state of the device, 1.0 A power driver for
controlling the gate of a discrete P–channel transistor, fixed frequency
oscillator, short circuit protection timer, programmable soft start,
precision reference, fast output voltage monitoring comparator, and
output stage driver logic with latch.
The high frequency oscillator allows the use of small inductors and
output capacitors, minimizing PC board area and systems cost. The
programmable soft start reduces current surges at start up. The short
circuit protection timer significantly reduces the duty cycle to
approximately 1/30 of its cycle during short circuit conditions."

As I wasn't able to find "PCBV 1570" i took a look at
"NCP 1570" (ON)
"The NCP1570 is a low voltage buck controller. It provides the
control for a DC–DC power solution producing an output voltage as
low as 0.985 V over a wide current range. The NCP1570–based
solution is powered from 12 V with the output derived from a 5 V
supply. It contains all required circuitry for a synchronous NFET buck
regulator using the V2] control method to achieve the fastest possible
transient response and best overall regulation. The NCP1570 operates
at a fixed internal 200 kHz frequency and is packaged in an SO–8.
The NCP1570 provides undervoltage lockout protection, Soft Start,
Power Good with delay, and built–in adaptive non–overlap."

the problem seems to be solve, BUT, as you possibly allready seen - there are Voltage Stabilizators, so as far as i understand-the require aditional voltage too.
 
truth

forgot to say - TL431C is mae by (T) - Thompson Electronics
 
I have the same pcb model but with 64 MB DDR. And what I can get max of this board is 244/501. Some vmem will help me alot. But I'm not so good in vmodding and if someone can tell me what should I do to get some decent overclock it will be very nice.

How many ns have the memory ? I can't see what is write on them. Is the memory Samsung @ 5ns like in this picture ? http://www.ixbt.com/video/images/128mb-2/palit-ti200-128-card-front.jpg

Please help me with more explanations how to make an vmode at mem and core at this model :(.

Sorry for my bad english.
 
Back