[Wam]

Just got some 2 x1Gb of Corsair 3500LL Pro and too my chagrin and hours of testing it would appear that I can't run 1T at ANY speed even stock setting of 2-3-2-6 218Mhz. I am a little peeved as I could run 2-2-2-5-1T with my 2x512Mb Corsair 3500 BH-5 @ 240Mhz.

I have tried the sticks on their own and they pass memtest fine but as soon as I put them in together in dual channel they fail test #8 in a matter of seconds.

I am using the 04xx bios and it's been fine so far. Is there any point in trying any other bios or playing around with some of the setting to see if I can get 1T to work.

[jonspd]

List your mem config from bios. Wouldn't hurt to try another bios if your planing to stay around 250fsb.

[RollingThunder]

Originally Posted by Wam

Just got some 2 x1Gb of Corsair 3500LL Pro and too my chagrin and hours of testing it would appear that I can't run 1T at ANY speed even stock setting of 2-3-2-6 218Mhz. I am a little peeved as I could run 2-2-2-5-1T with my 2x512Mb Corsair 3500 BH-5 @ 240Mhz.

I have tried the sticks on their own and they pass memtest fine but as soon as I put them in together in dual channel they fail test #8 in a matter of seconds.

I am using the 04xx bios and it's been fine so far. Is there any point in trying any other bios or playing around with some of the setting to see if I can get 1T to work.

Wam,

Go here:

http://www.ocforums.com/showpost.php...postcount=1407

It's the board, not your RAMs.

[Wam]

Originally Posted by RollingThunder

Wam,

Go here:

http://www.ocforums.com/showpost.php...postcount=1407

It's the board, not your RAMs.

Ah thanks for that RT. At first I was cursing the memory but then after testing individual sticks I realised it must be another idiosyncrasy of this board. I only really noticed after trying to play a game when it would freeze. I ran Memtest #5 and it was fine but as soon as I tried #8 it would restart or freeze. So bad that one time I had to reset the CMOS to get it up and starting again. It's a shame as 1T makes the most difference when it comes to bandwidth.


If I'd realised I may have just got some normal PC4000 though I did only think of this ASRock as a stop gap to give my AGP card a few laps round the block. It will be swapped out as soon as I get a PCI-Ex card.

[RollingThunder]

Originally Posted by Wam

It's a shame as 1T makes the most difference when it comes to bandwidth.


If I'd realised I may have just got some normal PC4000 though I did only think of this ASRock as a stop gap to give my AGP card a few laps round the block. It will be swapped out as soon as I get a PCI-Ex card.

Wam,

In my previous tests with the Crucials, when I could get them to run 1T, I really didn't see much difference at al between 1T and 2T real world and tests showed only a slight difference in performance (2%?). Since I'm not a "hobbyist" overclocker it made no difference to me.

Most of the guys here are much more advanced doing OCs so I don't try to match them (now ). There was so much I didn't understand that now I understand why I couldn't go higher or run 1T (safely).

I looked around for PC4000 RAMs @ 2.6 volt and the choices weren't thay many so I bought these Patriots PC3200 on a few recommendations and will just do a mild OC with them. I made some mistakes along the way that weren't too costly but this board wasn't one of them.

I didn't want to pay for a big dollar mobo and screw it up like a DFI Lan party or similar. If you can do mods to this board then you can do a lot more but I can't. I am perfectly pleased with a BIOS oc of 10-15%.

I won't say this board is picky on RAM because I got the same with these Patriots and Crucials but you have good RAMs ready for your next board. I'm not about to buy RAMs just to test how picky this board is with them. You'll do fine!

[Wam]

Thanks for that RT, I will let it stay at 2T for now but probably wouldn't have felt as dissatisfied if the RAM wasn't as capable and also I ran 1T with 2x512Mb so didn't suspect I'd stumble across this problem.

I suppose I will just have to satisfy with watching the flashing LED's

[Jakalwarrior]

Here is some things to try.
1.6 or 1.7 bios (I couldnt get 1t to work stable with 04xx)
8 burst (just seems to like it alot if your memory can handle it)
bank interleaving disabled (makes me very unstable if on)

Mine will do 1t at 225 with 3-3-3-"15". For some reason it likes that last number to be fat. Never had any other boards that cared about that number at all.

[RollingThunder]

Originally Posted by Jakalwarrior

Here is some things to try.
1.6 or 1.7 bios (I couldnt get 1t to work stable with 04xx)
8 burst (just seems to like it alot if your memory can handle it)
bank interleaving disabled (makes me very unstable if on)

Mine will do 1t at 225 with 3-3-3-"15". For some reason it likes that last number to be fat. Never had any other boards that cared about that number at all.

Jakal,

I did finally move to BIOS v1.5 and it also made no difference to me either but it was a logical and easy tryout. It seems that with any factory BIOS 1T usually doesn't work. I couldn't run 1T at default speeds or on underclocked RAMs.

Funny Person1 mentioned a technique he uses for 1T. I haven't tried it.

Go here:

http://www.ocforums.com/showpost.php...postcount=1537

RT

[Illah]

I'm still in the testing phase with my setup but 1T makes an enormous difference for me. My mem bandwidth dropped from 6100MB/s to like 5100MB/s going from 1T to 2T, it was horrible. Problem is it's not super stable at 1T. At 223MHz prime failed after 5 1/2 hours. Could be the CPU but I'm not sure, just started OC'ing yesterday so I got a ways to go before I know for sure.

Though if 1T makes a 1GB/s difference I'm likely to keep the RAM low with a huge divider if I need to...I'd need to run it at like 250MHz+ to make up that kind of loss and my BH-5 isn't up to the task

--Illah