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THE Asus Rampage Formula/Maximus Formula/P5E Deluxe/P5E Thread - Page 49

post #481 of 2014
Quote:
Originally Posted by Stixx View Post
I've read in here that some of you have flashed the P5E bios to Rampage? What's up with that and what are the advantages? Does it work?
The most important difference between the two is tRD or Performance Level. This is implicitly controlled in the MF BIOS through the transaction booster, but the RF not only gives direct control over this, but can allow phase "pull-ins", which basically allow you to run different RAM/FSB phases at the nominated performance level minus one. Using this added feature, many of us are able to run our RAM near DDR3 SPEEDS.

A very in-depth article explains the brute power of this additional flexibility. It begins on this page: AnandTech Article. It is recommended reading even if you don't flash Rampage because it really goes into fabulous detail about NB, RAM, and FSB. Everything you wanted to know but were afraid to ask, basically.
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post #482 of 2014
Dostoyevsky, you seem to be pretty knowledgable about this. I've read everything I can find and I'm still trying to figure out what the Pull-ins do.

Care to enlighten me?
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post #483 of 2014
The pull-ins enable you to run at the nominated performance level minus one on the specified RAM phases. You will notice that the number of pull-ins vary by which NB strap you're in. If you read THIS AnandTech article, you will understand why. The effect of enabling all pull-ins at your performance level plus one will be exactly equal to running otimum performance with all pull-ins disabled. To the limit of my knowledge, there is no method to calculate which phases can be pulled-in before instability arises. To be honest, at maximum bandwidth for my sigged configuration, there is no stable combination of any pull-ins at PL7. However, I can pass POST with phase 3, 4, or 5 pulled-in, which suggests to me that the higher the phase, the less likely a pull-in will result in instability.

As always, take that with a grain of salt. My knowledge on this subject is based solely on the article I linked to and upon anecdotal evidence from those in the forums. If you haven't yet, you should stop by the XS MF/RF thread. There are a wide array of systems on which people have tried various PL/pull-in permutations.
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post #484 of 2014
Thanks for the response.

I guess my understanding isn't that much far behind yours, but a couple of your points are indeed worth noting.

+rep
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post #485 of 2014
Haha! Appreciated all the same.
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post #486 of 2014
Hmm, this transaction booster is the Performance level? Dunno, switched it to enable 0 and now for performance level according to memset at 5.

I am a bit trying to figure something here out. Got G.Skills here and these exactly same blocks did 40-45ns latencies on AMD Athlon X2 4600+ AM2 board M2N. So, now with all settings auto or memory EPP profiled it gives me 70ns on P5E.. If I hit this transaction booster to Enabled 0 it gives me 65.1ns latencies and 'Ai Clock twister' is at 'strong' and value 1 won't even POST.

That's pretty far away from 40-45ns. So am I missing here something? Setup is exactly identical on memory and memory latencies on bios are correct.
Edited by TwL - 6/4/08 at 10:59am
post #487 of 2014
Thread Starter 
Quote:
Originally Posted by TwL View Post
Hmm, this transaction booster is the Performance level? Dunno, switched it to enable 0 and now for performance level according to memset at 5.

I am a bit trying to figure something here out. Got G.Skills here and these exactly same blocks did 40-45ms latencies on AMD Athlon X2 4600+ AM2 board M2N. So, now with all settings auto or memory EPP profiled it gives me 70ms on P5E.. If I hit this transaction booster to Enabled 0 it gives me 65.1ms latencies and value 1 won't even POST.

That's pretty far away from 40-45ms. So am I missing here something? Setup is exactly identical on memory and memory latencies on bios are correct.
I dont know what G.Skill modules you are talking about. There are many 2x1 and 2x2 GB kits, and at different speeds. You really need to be specific. I. nor anyone else here can really do much with that description you gave.

I know that the 2x2Gb DDR2 1000 kit has to be set at least to 52 tRFC or higher to run stable.
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post #488 of 2014
Quote:
Originally Posted by ericeod View Post
I dont know what G.Skill modules you are talking about. There are many 2x1 and 2x2 GB kits, and at different speeds. You really need to be specific. I. nor anyone else here can really do much with that description you gave.

I know that the 2x2Gb DDR2 1000 kit has to be set at least to 52 tRFC or higher to run stable.
nah I have DDR2 800Mhz 4-4-3-5 sticks here from HK series (edit: that's 4x1Gb). they are setuped fine I am sure about that part using row 4-4-3-5-3-40-6-3 the row to row should be 3 but at bios I cannot set it below 4. won't post.. so they are 8-3-5-4-6-4-6 on second row and that 8 as in read to write cannot be changed to 6 either for some reason..

this '40' tRC on the blocks should be 21 or 24(24 = 60ns). How should this tRFC work? I can drop it stabile to 25 even now on 0702 bios.. but understood that 'tRFC' and 'tRC' are not the same. So kinda dropped my brains to floor how even EPP actually says by memset 3.5b that it should be 40..

Funny thing also is these are stabile on stock while at AM2 board they were stabile only at 4-4-3-10, but then again with those latencies on AM2 these could be clocked even to 1066Mhz. So assuming that being an earlier boards issue only. Hardly get 1062-1063Mhz on this new P5E with 4-4-4-12 which is idiotic.
Edited by TwL - 6/4/08 at 10:58am
post #489 of 2014
Thread Starter 
Quote:
Originally Posted by TwL View Post
nah I have DDR2 800Mhz 4-4-3-5 sticks here from HK series (edit: that's 4x1Gb). they are setuped fine I am sure about that part using row 4-4-3-5-3-40-6-3 the row to row should be 3 but at bios I cannot set it below 4. won't post.. so they are 8-3-5-4-6-4-6 on second row and that 8 as in read to write cannot be changed to 6 either for some reason..

this '40' tRC on the blocks should be 21 or 24(24 = 60ns). How should this tRFC work? I can drop it stabile to 25 even now on 0702 bios.. but understood that 'tRFC' and 'tRC' are not the same. So kinda dropped my brains to floor how even EPP actually says by memset 3.5b that it should be 40..

Funny thing also is these are stabile on stock while at AM2 board they were stabile only at 4-4-3-10, but then again with those latencies on AM2 these could be clocked even to 1066Mhz. So assuming that being an earlier boards issue only. Hardly get 1062-1063Mhz on this new P5E with 4-4-4-12 which is idiotic.

I cant answer all of your questions becasue I am on DDR3 ATM and cant really test out any of your timings (and to be honest, I'm not a ram guru), but the Intel chipset does not get as "tight of timings" as the AMD setups, or even the NVIDIA Intel setups. When I was running an eVGA 680i A1, I could run DDR2 1200 with stock vdimm and cas 5 timings on my Ballistix. But as soon as I switched to Intel, I couldnt even manage to get past 1066. But the compromise is worth it just to have a stable chipset to OC with.

I would recommend using memset to adjust your timings and to test for stability. Then go in and manually set the timings in bios.
Edited by ericeod - 6/4/08 at 11:48am
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post #490 of 2014
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Originally Posted by ericeod View Post
I cant answer all of your questions becasue I am on DDR3 ATM and cant really test out any of your timings (and to be honest, I'm not a ram guru), but the Intel chipset does not get as "tight of timings" as the AMD setups, or even the NVIDIA Intel setups. When I was running an eVGA 680i A1, I could run DDR2 1200 with stock vdimm and cas 5 timings on my Ballistix. But as soon as I switched to Intel, I couldnt even manage to get past 1066. But the compromise is worth it just to have a stable chipset to OC with.

I would recommend using memset to adjust your timings and to test for stability. Then go in and manually set the timings in bios.
Yeah, considered here myself that it's better to have stable, tight latencies and lower frequencies on Intel than have an higher hertz. If your memory goes around 7400MB/s on 800Mhz (which should/could be actually 6800MB/s max as in DDR2) comparing gain of something like 1000-1063Mhz to speed is nothing while comparing to stable & fast acting memory in use.

What I am saying is that speed isn't everything here components functioning 3 times better together is which is hilarious as phenom + nforce is few TIMES faster than Intel on this. Which kinda would speak against any benchmarks out there.
Edited by TwL - 6/4/08 at 12:12pm
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