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[Official]ASUS M4N98TD EVO Owner's Club. - Page 45

post #441 of 611
I have, what I hope, is a fairly stable 4.0ghz overlock. Managed to set this up for a running of Prime95 which I'll check when I get back from work.

200x20 = 4.0Ghz (1.6v in BIOS, 1.5v under load)
CPU-NB = 2600Mhz (1.25v)
HT = 2000Mhz (stock voltage)
Ram = 1600Mhz/9-9-9-24-1T (1.5v)

Temperatures were sitting at 52c full load, it's still a bit high for liking as I'm able to get 3.8ghz at 1.4875v BIOS/1.4v under load. Not too sure if the extra voltage is worth the 200Mhz/e-peen. tongue.gif

Please add me to the club. smile.gif

Question: If I SLI my GTX480, will the 2600Mhz CPU-NB be fast enough? I remember reading somewhere that 2800Mhz+ is ideal for SLI setups.

193
post #442 of 611
I have had trouble running at 4 GHz, unless I crank the voltage up near 1.60V. I was always concerned about the extra voltage and cooking the cpu. I just added a Corsair H100 water cooler, and at 3.8 Ghz (current setup) my Prime 95 temps (In-Place Large FFTs) went from 57C (air cooled) down to 38C with the H100, so I might try 4.0 Ghz again and see where the temps sit.

Anyone else running that high of voltage to get 4.0 Ghz? If so, how is the CPU holding up? I am running the 1100T processor, so different from your configuration.

Keep us posted.
post #443 of 611
Seems like not many people have gotten this board above 2800Mhz for CPU-NB, I'd like to give 3000 a crack tonight after reading this article though:

http://www.anandtech.com/show/3877/asrock-890fx-deluxe-full-review-and-an-investigation-of-thuban-performance-scaling/7
post #444 of 611
2355283.png

http://valid.canardpc.com/show_oc.php?id=2355283

Got my M4N98TD EVO last week. After a couple of hours of overclocking fun I was able to achieve 3.8GHz @ 1.525V (3 hours prime stable). Everything above 3.8GHz was not stable. I was able to boot into Windows, but it BSOD'ed when stress testing. Even 1.55V didnt helped. I don't want to go any higher on the voltage for 24/7. Or is it considered safe to go higher on the voltage because of the Vdroop? Voltages with 3.8GHz overclock were 1.525 in BIOS, but CPU-Z was showing 1.44 and sometimes even 1.424 @ load. In my case the voltages are shown correct when idle, but at load the Vdroop kicks in.

My Vdroop results:
203

An average of -0,08V / 5,84%.
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post #445 of 611
Whats up guys. Id like to join your revolution here, haha. ive had teh board for well over a year now and love it. Im just starting to get into OC'ing. right now, im just starting to mess with the ram, mb and ht settings. i have a 965BE & 975BE at my disposal. the 965 ive overclocked for months @ 4.1 with no issues. nothing else OC'd either. Now, with the 975, im finding its not as stable as the 965, nor is the way im trying to OC the same. The 965 like the Freq adjusted and not the clock, the 975 is opposite...which is weird, since they are essentially the same damn chip...?

i hope to get some help here with my OC'ing as im kinda noobish at it.thumb.gif

OC_Start.jpg
post #446 of 611
ongsta and n7plus1 - It is to hard to read your jpgs. Can you post your hardware and settings, or attach individual jpgs which might be clearer (rather than your desktop)?

I'd like to work on this as well, but we need to be able to share data.

ongsta - it might take 1.575V to boot into 4.0 Ghz. That is what it took for me with my 1100T, but I didn't like running that voltage. Your voltage table looks exactly like what I have seen on my system. Good work!
post #447 of 611
any better for ya?

edit.jpg
post #448 of 611
I've been playing around with some settings. I'm running 3.5GHz @ 1.35V right now. I came across this topic with information about the VDDA voltage:
http://www.overclock.net/t/441042/what-in-the-world-is-cpu-vdda-voltage#post_5533629

The most important part:
"setting the CPU VDDA to it's highest setting will cause the CPU voltage to be (alot) more than what you set it to in BIOS."

So I started to test it. I can set the VDDA voltage between 2.5 and 2.8.
- 2.5 (stock) gave me 1.296V under load, which is the exact the same value according to my table: http://www.overclock.net/t/946302/official-asus-m4n98td-evo-owners-club/440#post_17143490
- 2.6, 2.7 and 2.8 gave me 1.28V under load, which is an even worse Vdroop.

Tried with some other voltages (1.4 and 1.45 in BIOS) and exact the same results, an even worse Vdroop.
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post #449 of 611
In the manual it states that the motherboard has "DDR3 2000(O.C) support".

Does that mean it supports:

A. - Any DDR3 less than 1600mhz but can overlock them to 2000mhz

OR

B. - Drop in 2000mhz sticks and itll run @ 2000mhz

The (O.C.) is what gets me, what does ASUS mean by that?
post #450 of 611
Hey Guys it's been a while I currently have my 1090t black at 4.0 16x250 nb set to 2500 with 1.26v and ht to 2000 @ 1.2 stock volt

i see some of you are able to hit higher nb frequencies towards 2800-3000 i'm able to set to 2750 and boot in but i get a screen lockup and anything over that causes no post
any ideas on how i can up my nb since in a few days i'm gonna sli 2 gtx 560 ti ds's

could my real issue only be that i'm not running board certified ram "serial numbers don't match any of the certified sets" and this is causing the cap on the nb????

any and all ideas are appreciated and yes i'm going to be buying board certified chips soon

also a curious question any reason everyone sticks with the 2000 mark for the ht yes yes i know i'm wearing my noob hat lol
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