Just curious if someone can give a link or some general information about the new feature in 0.0.22 that allows one to tweak a video cards memory timings. Just some general knowledge on what makes for a faster timing for memory. I like the feature and I think it can benefit some of us willing to tweak a bit. I have an X800Pro. One of my questions is, Are lower numbers faster? I would just like to see what I can get out of mucking around with the memory timings. Mucking around has been known to come back and bite me in the arse a time or two. loll But, I just like to try to get the most out of great programs like this ATITool. It's the best program there is, imho.
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Video Card Memory Settings
- Thread starter Quazi
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mpan3
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I wouldn't bother with mem timing. Yes Lower number = faster, but lower latency decrease the RAM OC bility. I'd rather increase the mem frequency than decrease the latency.
zealot`grr
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I'd only mess with the mems timings if you have a pci card to flash a new bios or reflash it
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the mem timings change is not permanent .. you set them .. they are kept until reboot .. if you reboot everything is back to default ..
W1zzard said:
Yea, that is what I thought. Which is great because if I set something that isn't agreeable or locks up, then a re-boot will set everything back to default. Latency eh? I am going to play around and see if I can get anything extra out of these 2.0ns chips. They handle XT PE speeds already. What I would really like to know is default mem numbers on an XT PE. If anyone would care to share those, please list them here. Maybe I can use those, or maybe settings in between the 2.0 and 1.6 chips to increase the memory effectiveness. Thanks guys.
zealot`grr said:
Eh, I've done many a blind flash. And I have a floppy handy with a backup of my bios if need be. Thanks for the warning anyway m8. And you are right. I also have a PCI card handy. loll But as I understand it, those setting aren't permanet. Just while ATITool is running. A reboot sets everything back to normal. I think it will be an awesome feature for some of us. All it is going to take to find out is a little experimentation and sharing of information. Everything I find out I'll put in here.
C
coolmig77
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I have a Sapphire Radeon 9600PRO which I managed to go 492/345 with little errors. The mem is Samsung 2.8ns GC2A that is rated to 350MHz, I checked the datasheet of the Samsung memory and I see that some timings that AtiTool show are less than the rated, and some higher, like CAS latency. The point is that my memories don´t go up more than 347MHz without errors (Core not OC'd)... I bought some ramsinks to help the RAMs go a little cooler and see if the problem is not temp... then I will play a little with the timings and see if I can get more mem speed getting all the timings to the rated in the datasheet, hope I can get some 360MHz+ that I've seen on some OC results.
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Anyone tried it with 9800 with 2.8ns Hynix RAM modules? Any info would be greatly appreciated
zealot`grr
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ah, I see. great info guys 
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I downloaded the specifications sheet for my vidcard's ram (HY5DU283222A) from Hynix, and after reading it for a while I noticed it supported a lot of timings, but the one I immediately recognized was CAS latency.
The sheet specifies that this ram support both 5 or 4 CAS latency, so I loaded atitool, and found that my card was using 5 CAS latency, I changed it to 4, and after applying it, my whole desktop filled with artifacts, and I wasn't able to change the setting back again, so I turned my PC off, and after rebooting, everything was back to normal
Guess I'll stay away from changing those settings for a long time
The sheet specifies that this ram support both 5 or 4 CAS latency, so I loaded atitool, and found that my card was using 5 CAS latency, I changed it to 4, and after applying it, my whole desktop filled with artifacts, and I wasn't able to change the setting back again, so I turned my PC off, and after rebooting, everything was back to normal
Guess I'll stay away from changing those settings for a long time
U have to know that on memory 5.0 ns on 200mhz cas latency is 2.5 standard. (except winbond bh5,bh6 etc....)
It can up to 220 mhz with 2.5 then u have to give them or more voltage,or u need to put them on cas 3.On 350mhz memo (700 mhz) only good memo can go with cas 4 with stock voltage. So,you will need VDD mod for your gddr for playing around with cas latency. But i dont think you will get more fps if u play with latency. More MHZ should get u more fps ;-)) So,do a voltmod for your memo and you will get LOOOT more mhz.
P.S. I tried on my memo 5.0 ns hynix,and i can get cas 3 without problems but that is just an 5.0 memo ;-))
It can up to 220 mhz with 2.5 then u have to give them or more voltage,or u need to put them on cas 3.On 350mhz memo (700 mhz) only good memo can go with cas 4 with stock voltage. So,you will need VDD mod for your gddr for playing around with cas latency. But i dont think you will get more fps if u play with latency. More MHZ should get u more fps ;-)) So,do a voltmod for your memo and you will get LOOOT more mhz.
P.S. I tried on my memo 5.0 ns hynix,and i can get cas 3 without problems but that is just an 5.0 memo ;-))