How do you change the memory timings on a VGA card

[scottchen]

I currently own a Sapphire 9800np equipped with 2.86ns Samsung memory, I think the memory's running at CAS2 latency, at least that's what the retailer told me. I was wandering if it's possible to change that to 2.5 or 3, would that get me more frequency?

-Intel PIV 2.6C @ 3.575G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800np @ 432/760 -SB audigy -120G Maxtor Diamond Plus9 S-ATA150 hdd -450 Enermax PSU

 

[scottchen]

SOMEBODY PLEASE HELP. Because i really want to break the 400mhz barrier for the memory.

-Intel PIV 2.6C @ 3.575G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800np @ 432/760 -SB audigy -120G Maxtor Diamond Plus9 S-ATA150 hdd -450 Enermax PSU

 

[speeduk]

Hi mate, its easy. Download atiflash and radedit.

Copy everything to a startup disk from the atiflash zip.

You need to start atiflash from dos so make a boot disk first then run atiflash and type atiflash -s 0 my_bios.rom

That coppies your current bios to the floppy.

Boot to windows again.

Use radedit to open the bios image you saved and edit the memory cas to 3, although if you have flashed to pro bios, it may already be 3. Also you can edit the clocks in radtweak and save them while editing the cas.
If its not 3, change it and save it to floppy with a different name like new_bios, and boot into dos again.

Use atiflash and type atiflash -p 0 new_bios.rom r

New_bios = name you saved the new bios as.


It should restart with the new clocks and cas and work fine. If not, use a cheap pci card and flash the card back to the original bios on the floppy.


My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."

 

[scottchen]

How do i get the original bios for my sapphire 9800np?

-Intel PIV 2.6C @ 3.575G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800np @ 432/760 -SB audigy -120G Maxtor Diamond Plus9 S-ATA150 hdd -450 Enermax PSU

 

[speeduk]

I explained ^^ read the first part.

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."

 

[speeduk]

You need to start atiflash from dos so make a boot disk first then run atiflash and type atiflash -s 0 my_bios.rom

That coppies your current bios to the floppy.

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."

 

[scottchen]

Thanks man.

-Intel PIV 2.6C @ 3.575G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800np @ 432/760 -SB audigy -120G Maxtor Diamond Plus9 S-ATA150 hdd -450 Enermax PSU

 

[HardWareBoss]

What your Vid card not fast enough?

 

[speeduk]

Hes had his 9800pro higher so naturally its not fast enough.

Oh and let us know how it goes.

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."

 

[scottchen]

I'll try today, the thing i'm worried about is that i don't have a PCI card, so I can't screw up.

-Intel PIV 2.6C @ 3.575G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800np @ 432/760 -SB audigy -120G Maxtor Diamond Plus9 S-ATA150 hdd -450 Enermax PSU

 

[scottchen]

I know i can't get back to my pro's overclock, but i was hoping i could break the 400mhz on 2.86ns memory.

-Intel PIV 2.6C @ 3.575G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800np @ 432/760 -SB audigy -120G Maxtor Diamond Plus9 S-ATA150 hdd -450 Enermax PSU

 

[Nights_L]

I have radedit and atiflash, but I don't see the "CAS" in that program..where exactly is it?

 

[speeduk]

Its under memory timings on mine.

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."

 

[Fallen]

Let me know if you get it working. I posted asking the same question before, but got no replies. Being that video memory is accessed directly and without a standalone memory bus, I was going to try the opposite: reducing the CAS latency to 1. If I only had a PCI card...

 

[speeduk]

Uh oh. It seems that raising the timings to 3 has a bad effect on some cards. Lots of differing views on this one. One guy even says that the timings are locked????? Hope scotts not borked his card up trying :/

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."

 

[speeduk]

<A HREF="http://forums.overclockers.co.uk/showthread.php?s=&threadid=141121" target="_new"> Click </A>

It seems lowering cas to 1 has better performance and same overclock as cas 2.


My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."

 

[scottchen]

speedy you're scaring me, but anyways i tried CAS3 didn't work, gained nothing, performance didn't change. i guess it was locked.

-Intel PIV 2.6C @ 3.575G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800np @ 432/760 -SB audigy -120G Maxtor Diamond Plus9 S-ATA150 hdd -450 Enermax PSU

 

[speeduk]

Oh well at least you didn't mess your card up.

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."

 

[HardWareBoss]

Looks like you reached your cards limit.

 

[Nights_L]

maybe cuz I have an older version?
where can I download those? I forgot.. :tongue:

 

[speeduk]

<A HREF="http://www.radeon2.ru/radedit_eng.html" target="_new"> Here </A>

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."

 

[speeduk]

Scott have you flashed to the 9800pro bios???? This gives upto 50mhz extra overclock over the 9800np bios. The guy who sold me his 9700pro got 520/400 on one of his 9800np's with pro bios. He benched at 490/390 <A HREF="http://service.futuremark.com/compare?2k3=1243615" target="_new"> here </A>

<A HREF="http://www.digitalsynapses.com/9800mod/98-8004.BIN" target="_new"> Heres </A> the 9800pro bios you want.

My system spec: Fast PC<A HREF="http://service.futuremark.com/compare?2k1=7000747" target="_new"> 3D-2001 </A>
"It's not the spoon that bends, it's only yourself."

 

[scottchen]

520/400?!!!! HOLY F*CK thanks speedy for the bios.

-Intel PIV 2.6C @ 3.575G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800np @ 432/760 -SB audigy -120G Maxtor Diamond Plus9 S-ATA150 hdd -450 Enermax PSU

 

[scottchen]

Speedy are you sure flashing to a different card's bios won't screw up my card? How can i make sure the cards' memory are exactly identical?

-Intel PIV 2.6C @ 3.575G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800np @ 432/760 -SB audigy -120G Maxtor Diamond Plus9 S-ATA150 hdd -450 Enermax PSU

 

[scottchen]

Oh yeah Speeduk, also something else to ask, a friend of mine has a powercolor evil commando 2 radeon 9700pro he was wandering if he could flash his bios to 9800pro bios as well without screwing up his card.

-Intel PIV 2.6C @ 3.575G -Asus P4P800 -OCZ Copper 2x256 4000EL memory @ 275mhz 3-4-4-8 -Sapphire 9800np @ 432/760 -SB audigy -120G Maxtor Diamond Plus9 S-ATA150 hdd -450 Enermax PSU