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How do you change the memory timings on a VGA card

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November 3, 2003 2:17:02 AM

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
November 3, 2003 2:33:36 AM

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
November 3, 2003 11:14:32 AM

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."
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November 3, 2003 1:01:28 PM

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
November 3, 2003 3:31:20 PM

Quote:
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."
November 3, 2003 5:05:15 PM

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
November 3, 2003 5:44:27 PM

What your Vid card not fast enough?
November 3, 2003 8:10:54 PM

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."
November 3, 2003 9:26:16 PM

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
November 3, 2003 11:34:22 PM

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
November 4, 2003 12:24:16 PM

I have radedit and atiflash, but I don't see the "CAS" in that program..where exactly is it?
November 4, 2003 5:18:02 PM

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...
November 4, 2003 5:23:01 PM

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."
November 4, 2003 9:51:19 PM

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
November 5, 2003 11:27:37 AM

Looks like you reached your cards limit.
November 5, 2003 1:12:37 PM

maybe cuz I have an older version?
where can I download those? I forgot.. :tongue:
November 5, 2003 2:13:37 PM

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."
November 5, 2003 3:27:00 PM

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
November 5, 2003 3:41:46 PM

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
November 5, 2003 3:51:39 PM

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
November 5, 2003 4:14:31 PM

The 9700 is a different core to the 9800, so it cant be flashed to 9800. But your 9800np has samsung memory so it will flash to a 9800pro without any problems because the 9800np is just a pro with lower clocked/volt memory and gpu.

Its been done loads of times and theres no risk involved as long as you have a proper 9800np with samsung memory that overclocks to 9800pro speeds. Thats what you have.

<A HREF="http://forums.overclockers.co.uk/showthread.php?s=&thre..." target="_new"> Heres</A> a good post about flashing to pro and memory types and speeds.

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."
November 5, 2003 4:15:42 PM

<A HREF="http://www.digitalsynapses.com/articles/9800npflash/" target="_new"> Heres </A> a guide to the flash and what memory you need.

Quote:
Before you flash, check to see what brand of memory is on your card. Unless you have Samsung 2.2ns, 2.8ns, 3.0ns, or 3.3ns do not flash. If you have any of the above Samsung memory and your cards memory tops at say 330MHz, you should be OK to flash, as the 9800Pro BIOS slightly raises the voltage going to the memory, allowing for higher clocks


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."
November 5, 2003 4:20:27 PM

The guy who got that card to 520/400 also got another 9800np flashed to pro that did about 500/395 and he said a friend of his got the same sapphire 9800np, flashed to pro and got about the same overclock.....

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."
November 5, 2003 4:23:44 PM

If you do flash to pro, you MAY get say 5mhz less overclock on the core (due to heat produced by memory) but an extra 5-40mhz memory overclock or more.

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."
November 5, 2003 11:03:40 PM

Ok, flashed bios, reinstalled driver and everything. Windows still detects mine as a Radeon 9800, not pro. I must've done something wrong. But it did says flash rom was successful.

-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
November 5, 2003 11:14:49 PM

Hey speed somebody wants to buy my card for 425 dollars Canadian.

-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
November 6, 2003 2:16:56 PM

LOL, don't care anymore i sold it, now i gotta find another card. Nobody seems to have 9800np with Samsung memory anymore, so i'm probably just going to buy a 9700pro or a 9600pro.

-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
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