dont set them to auto, they can shoot through the roof
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I have the same problem- is it better to set vtt to "auto" or to 1.20 for e8400 ?
I know that when vcore or vNB is set to auto it pumps more than enough volts, but in vtt BIOS says "manual set or "auto" for safe mode".
I get different opinions about this...
Anyone measured vtt when set to auto/sth else ?
Is there a way to measure vtt ? Any program does this ?
What is the vtt? Is that the NB setting in the bios? What does Vtt stand for?
I use an NB setting of 1.45v for a long time now. I can do my quad 2.4 GHz at 4 Ghz no problem with that setting. I don't run it that high every day because I only have air. Also, I don't like the high Vcore I need to use for extended periods of time. But, I never change the NB setting from 1.45v
vtt / vfsb. fsb termination voltage
Hi to everybody. I just bought a corsair 4gb kit TWIN2X4096-6400C4DHX and i have problems on P5b deluxe.
This is my system:
e6300
p5b deluxe wifi
enermax coolergiant 600w
My system is rock solid on 460x7 with a very cheap Kingston 2x1GB kit.
I tried the new rams: one 2gb does not go beyond @900, the other one reach @920 (at @930 i get erros, at @940 i get BSOD). Memtest by floppy does not give any problems at @930, it finishes one full cycle on 460x7, but Memetest in Windows and Orthos get a lot of errors.
I set the mobo in this way:
vNB: 1,45
vRam: 2,3 (Corsair recommends 2,1 on default frequency)
letency: 5-5-5-15.
I read a review about the cas5 kit, and it reaches @1066, mines are cas4, so they cannot stop at @920.
Do you think it's my mobo?
Can you help me?
Thanks.
i've been away over a year so familiarising myself. what's a good P5BD bios to use at moment?
ASUS Ai Suite wont load any one know why ? tryed diff ver. same happens :mad:
Hi XtremeSystems Members,
I am having a bit problem with my Memory Timings on 1004 BIOS Rev. but now updated to 1219 Rev. What are you suggestions with the SubTimings on 2GB Kingston Hyper-X 1066? If I want to play a game, it is stable when setting at Auto Timing which is 4-4-4-11 according to CPUZ.
My Configuration are:
430x7
860Mhz DRAM
Vcore 1.300
Mem Vol. 2.10
NB 1.45
SB 1.50
ICH Auto
It is stable on orthos alittle over 8 hours when setting at Auto for DRAM Timings under NorthBridge Settings.
Thanks
Hello everyone, I'm new to posting on these forums but I've read them for years, and have always found useful information :]
I'm trying to get 8GB's of G.Skill PC-1000 (4x2gb) to play well with my P5B-DLX, but I'm having some troubles. Actually, if I run my Q6600 @ stock speeds, and my RAM @ 800mhz (2.1v), it'll work great, be rock solid with all 8GB's (9+hours of memtest86), however if I go over that, to around 950mhz RAM (if I run my CPU @ 3.33GHz with a 366MHz FSB), then the machine will refuse to POST. It will post with 1 stick, 2 sticks, and even 3 sticks. In fact, it'll run Memtest86 with 3 sticks @ 950mhz (5-5-5-15 @ 2.1v), but as soon as I add the fourth, it wont post. It doesn't matter which combination of 3 I use, all the sticks work and overclock the same in 3-module configurations (more or less), but with 4 the board wont post UNLESS I drop the memory down to 800MHz.
Now, I'll admit, I haven't played with this much, so I'm sure all 4 can probably do more than 800MHz, but is this normal behavior? I tried raising the voltage, no go. Lowering timings, no go. The only thing that allowed me to POST was to lower the memory speed. I'd like to overclock my CPU and at least be able to run the RAM at it's rated speed, but I'm having difficulty.
I read that this RAM really enjoys high TrFC (48+), but this board will let me go up to 43 max (in the BIOS), could this be causing my problems?
Once I get home from work I'll mess with it more. I haven't tried raising the NB voltage or anything (when I say I haven't spent much time, I LITERALLY haven't spent much time) :P
Thanks for any feedback everyone!
EDIT: This is the RAM I'm using http://www.newegg.com/Product/Produc...82E16820231145
If you are going backward, you need an older ver of AFUDOS. If you need it give me your e-mail address.
I think this ez to work with The ASUS P35 w/ DDR 2 is only a small improvement of old technology. They fixed the Vdroop a little and the P35 only has a slight memory improvement. Intel will have a major update Q4 2008.The CPU will have the memory controller inbeaded on the die vs on the chipset.
After reading the last 10 pages of this thread, I've found a TON of useful information! Thanks everyone, I'm going to try a few diffrent things when I get home in a few hours :D
you are in for a lost course if you think you can run ram higher than FSB, P965 is a :banana::banana::banana::banana::banana: with 4 modules. Why don't you set 1:1 then pumd up the FSB until you hit the wall, there is no chance that you can ultilize your memory at full speed.
Even with 1.9v on the NB I still can't get 445FSB stable. Stable I mean large FFT in orthos, not some SPI32M Sh*t. I totallly gave up in the end, ran out to the shop and grabbed P5K-E, 4 modules easy at 500FSB.
You were absolutely right.
No matter what I tried, 1000MHz was a no-go with 4 modules. I even went as far as to try 2x2GB G.Skills with my other 2x1GB Patriots. So it's not the modules for sure. It's ok, I took your advice and ran all 4 2GB modules at 1:1 with my FSB at 4000mhz (3.6GHz on a Q6600 G0), and Memtest86 ran fine for like 30 minutes (didn't want to go further because I was pressed for time, and I mainly just wanted to make sure it would work). However, at that speed, my system refused to boot into Windows. I'd get a loop at the splash screen, or a BSOD. I tried to raise all the voltages I could see in the BIOS, and even with the Vcore at 1.5v, and none of it helped. Could it be my BIOS? I'm running version 1226 (the latest one I believe), and I read on these forums that its a POS for overclocking. Something about it limiting high FSB overclocks. If I could get 400mhz (3.6GHz), I'd be VERY happy with that! I find it hard to believe that my G0 is hitting it's wall at 3.6GHz (though I'm sure it's possible).
Thanks for the advice so far everyone! :]
**UPDATE**
Great news! I decided to drop my multiplier to 8, and memory speed to 800MHz, and raise the FSB to 400MHz, and I'm STILL getting the BSOD'S! WOOOHOOO! I think this pretty much means it's my motherboard and not my RAM/CPU, etc. I think flashing down to BIOS 1219 might fix my problem. I was really beginning to worry that maybe my CPU wasn't liking anything over 3.4GHz... seems that might not be the case :]
Sad day, I think my board might just be a bad overclocker :(
Flashed to 1219, and I still cant boot into Windows with anything over 375ish FSB. I tried raising every voltage I could think of. I dropped the memory down to 800MHz (I'm using x2 Patriot 1GB sticks rated at 1000Mhz), and dropped the multiplier on the CPU, and still nothing. I simply wont boot into Windows. I raised the vNB to 1.65 (highest it'll let me) and nothing. Though, with all voltages set to AUTO (except for vDIMM that's at 2.1v), it'll run 24/7 @ 366MHz FSB (3.3GHz).
Anyone have any suggestions? There's gotta be something I'm missing, if not I might have to get myself a Maximus Formula, lol ._.
I did not do any bench test, all I want to do is to get above 450FSB on my P5B-D to run My wolfy at 4.2GHz, but i can't with 4 modules of ram. So I bought P5K-E.
have you try to relax the memory timming 5-5-5-15? It may helps.
Yeah, that's the only timings I've ever ran my memory at. I've tried the memory at 1000MHz, or 800MHz, neither work. Granted, I haven't tried to lower the timings further than that... but it will run Memtest86 at 3.6GHz (1000MHz RAM), it just wont boot into Windows without BSOD'ing :(.
I don't think anyone has posted this link for a while:
Secrets of the i965 based Asus P5B and chipset strap uncovered.
http://www.thetechrepository.com/sho...&highlight=p5b
It even talks about a memory hole. I would suggest that you bench between changes to see if there is any benefit. Sometimes one thing will increase and another will drop. You don't know unless you do some basic testing.
I know this is just one synthetic bench. But, I use it with some others like file move etc. My memory is low because I have moved 2GB x4 slower memory just to have the 8GBs. But, my others numbers went up with the increase in memory. I don't think more hardware memory is my bottleneck with Vista 64.
http://chuckbam.com/0400707/122607/PCMARK05.PNG