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The Extreme Pin Modding Guide - Page 17

post #321 of 565
3/24/06 at 3:13am
Just remember that your voltage will always be 1.426v, so any decrease you do in NHC is in relation to that.

On a side note, I was just in the same boat as you, booted fine, but couldn't run prime for a second. I also did vid1 and vid2. I am now 12 hours prime stable, but I don't want to lower my voltage, as I really don't want to keep letting my notebook run for 12 hours. Anyone know if that is a problem, leaving that much voltage if it isn't necessary?? (It is running very cool)
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post #322 of 565
3/24/06 at 3:17am
I don't understand how I lower it. Ok, so now with vid1 and vid2 jumpered, I'm theoretically getting 1.436v. Now if I wanted to go down one step to 1.42v, how would I do that in one of these programs like Notebook Hardware Control (NHB)?

Thanks for the help.. I think this is my last step.. I just need to figure out how to lower the voltage in the program so I can understand what the voltage is ending up as.

Thanks!
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post #323 of 565
3/24/06 at 3:23am
Actually, I don't use the program :/ I was planning on installing it, but haven't bothered yet. My battery still lasts over 2.5 hours anyway. But I assumed you could just set a voltage, so if you want to go to 1.42, that would be a derease of .016. Subtract that from stock 1.34, is like 1.324.

I assume that's how it works
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post #324 of 565
3/24/06 at 3:32am
Ok, I'll give that a try and post my results.
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post #325 of 565
3/24/06 at 4:03am
Ok, it looks like I can only get Prime95 to run if I have the voltage at 1.436. If I lower it one step to 1.42v I get ERROR: ILLEGAL SUMOUT errors in Prime95 right away when I start the stress test. I still haven't run Prime95 for hours yet, I haven't got past the 2 minute mark yet. heh

So is running at 1.436v too high?
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post #326 of 565
3/24/06 at 4:05am
Quote:
Originally Posted by Allistah
Ok, it looks like I can only get Prime95 to run if I have the voltage at 1.436. If I lower it one step to 1.42v I get ERROR: ILLEGAL SUMOUT errors in Prime95 right away when I start the stress test. I still haven't run Prime95 for hours yet, I haven't got past the 2 minute mark yet. heh

So is running at 1.436v too high?
the highest i would go is prolly 1.452(vid0,1,2)
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post #327 of 565
3/24/06 at 4:38am
I noticed that if I set it to anything but 1.34v Prime95 would give me those errors. So I jumped vid0, 1, and 2 to get me to 1.452v. Then I set NHC to 1.324v which should have given me 1.436v (which was stable when I had vid1 and vid2 jumped) and it still gave me the errors. So now I'm going to go down to 1.404v and see if I get those errors without changing the voltage in a program. It just seems that if I muck with the voltage in a program I get those Prime95 errors. Maybe I just have to do this the hard way and jump it every time instead of using software to change the voltage.

Any thoughts?

**** UPDATE: Ok, this is interesting. I stopped using the NHC program to change the voltage and I just jumped vid2 only which should give me 1.404v and Prime95 isn't giving me those errors. So far, these voltage adjusting programs aren't working for me. Anyone know why? I'm going to leave it at 1.404v and see if I get any errors till I go to work in the morning (6-7 hours from now). I'll give an update in the morning.
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post #328 of 565
3/24/06 at 8:03am
Ok i got 8,010 3dmarks05 with 470/1250 but...

i get errors with ati tool 1-22 pixels after 2 min...
at 460/1200 i can run 15 min with no errors then 1- 5 pixels...
at 450/1200 runs about 30 min with no errors then 1-2 pixels...
at 440/1200 runs stable overnight with no errors...
question 1)errors from heat?

question 2); in my past days of overclocking i would just look for artifacts - then clock back--- how accurate is ati tool?

at 470/1250 i see no artifacts in gaming.... and in the past i would probably run 470/1250 or 460/1200...to be safe

question 3) if we run games at high clocks are we damaging our cards excessively?

ps... i used to run the "ati chimp demo" to test for card stability- if i could get through 6 passes i considered my card stable(it really heats up the card)
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post #329 of 565
3/24/06 at 2:17pm
Hey guys..

Here is an update on my 1.8->2.4 OC. Using programs to change the voltage results in errors; not using these anymore. My CPU standard voltage is 1.34v. I ran at 1.372v for ~20 mins and got an error in Prime95. I moved the jumpers to get 1.388v and I've been stable for an hour and half so far on the train ride to work. Today at work I'll let it run for about 7 hours, and then if it's all good, I'll start it up when I get home tonight and let it run for 20 hours. I should hit 20 hours at ~3pm tomorrow afternoon. If all goes good, I'm golden.

When I was on the train this morning during the 1.5 hour test, these are the temps I was seeing: full load w/cpu fan on high: 60-61C (140-141F). After an hour and a half this is where it stabilized at. Is that good, bad, or ugly? :-)

Thanks for the help guys, I think I finally have this thing figured out. I'll post back with my final results Saturday afternoon when I'm done with the 20 hour Prime95 run.

UPDATE: Right after I posted this I got an error. CRAP! Going up to 1.404v. :-/

UPDATE: Running at 1.404v for nearly an hour with the cpu fan on high, it seems to have settled at 63C (145F).

-Allistah
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post #330 of 565
3/24/06 at 4:24pm
Thread Starter 
Sorry for my neglect, school and the rest of life has kept me from updating this thread . So then:

Allistah - Being able to boot at stock voltage is a good sign. Off hand, I'd say run 1.404V just too be perfectly stable. Your temps are a little high, re-do your AS5 application. Remember to use a semi-thick layer, then put the heatsink on top of it and before tightening it down, push down on it and swivel to spread out the AS5 and thin it out. The problem you found with voltage modification is the difference between hardware and software modding. Think of the voltage switches as a row of 6 light switches (VID0-5), with down being 0 (logic low) and up being 1 (logic high). Now there are pre-determined voltage requests for each position, and software switches them up and down as requested. However, when you hardwire the switches, you force them to be a zero. Therefore, no matter what voltage you request through software, those pins will always be zeros. Therefore, when you grounded VID1 and VID2 to get 1.436V and then then tried to get 1.420V by selecting 1.324V, you actually GOT 1.324V since VID 1 and VID 2 are already grounded on 1.324V. I'll update the first post to reflect all the knowledge we've found via my testings and others.

AceDaffy - My offhand guess is that both of those clocks are too high. Ideally you should isolate your overclocking so that you do the core or the RAM only at one time, not both. However, you might want to post in one of the 7800GTX overclocking threads so you can get more answers as this thread should really stay on topic.

And yes, the 2.0->2.66 is very difficult. There was a gentleman on eBay selling pre-tested 755's that will do 2.66GHz (on stock voltage too I think, I don't quite remember).
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post #331 of 565
3/24/06 at 4:30pm
Thanks for the info. Yeah, I don't think the AS5 is as good as it could be because I was taking the heatsink on and off so many times and I didn't want to clean it every single time. Once I find the voltage that is good (I hope I'll be able to stay at 1.404v) I'll remove the heatsink, clean the cpu and heatsink with alcohol and re-apply the AS5 the right way. I'll also push the heatsink down and rotate it a few times to get as much out as possible. Then I'll tighten the screws. I'll post back with those temp results once I find out what voltage works for me.

Right now it's been running at 1.404v for nearly 2 hours and the temp is between 63-64c with the cpu fan on high.

UPDATE: It made it through almost 7 hours at 1.404v today at work. I just fired it up again here at home and I'm going to let it run for ~20 hours. I'll reply back with the results.
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post #332 of 565
3/25/06 at 1:05pm
Well crap. I got an error after 13 hours of running Prime95 @ 1.404v. I guess I could go up to 1.42v but that just really doesn't sound like a good idea to me.

I'm considering the 1.7->2.2 OC instead at this point, or maybe try another 1.8->2.4 off Ebay.

Any opinions?

UPDATE: I figured I have nothing to lose by trying 1.42v so I figured I'd give it a try and see if it works or not. I also took the time to do the AS5 correctly and make sure I was really careful installing the heatsink, twisting it with downward pressure and all that. I even cleaned both surfaces with alcohol beforehand. I guess I'll see what this does and what temperatures it brings. I'm also a bit concerned about the voltage when it's underclocked. Hell, I dunno wtf I'm gunna do.. :-/

UPDATE: So, what are your opinions? Is 1.42v too high? Is it middle of the road? What do you think the chances are of me buying another one on Ebay and getting a lower stable voltage? Since this seems to be a higher voltage (1.42v) will it have an effect on my battery at all? What about when speedstep is on and I'm just reading email/web stuff? Will it just run hotter when idle than it did before?
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post #333 of 565
3/25/06 at 6:12pm
i personally think 12hours of prime is considered stable as do most...i think
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post #334 of 565
3/25/06 at 7:43pm
Quote:
Originally Posted by timmy223
i personally think 12hours of prime is considered stable as do most...i think
Yeah, I think some people do, but I don't. You shouldn't ever get a failure if I consider it stable. Some people don't want to wait the 24 hours, but I think it's worth it. I'm guessing that if I run it for 24 hours without any issues I don't think it's ever going to have an issue.
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post #335 of 565
3/26/06 at 12:07am
Thread Starter 
What are your temps at no Allistah? As long as you stay at 65C or lower, you're perfectly fine for the long run . And 1.42V is fine, I had the same problem. I ran it for 14 hours straight at 1.388V, no errors. One night I was hosting a CS:S server with bots, BAM crashed in 90 minutes. Prime95 is a good program, but it isn't the end all of stability.

Quote:
Originally Posted by Nimitz87
oh one question for Mr. K6 what kind of battery life do you get w/ the 7800GTX and pinned 1.8?
Saw that awhile back. I get a little more than 3 hours on the lowest brightness, but I have heavily tweaked this laptop to run for a long time on battery (undervolted video card and CPU, disabled wireless and modem, etc.).
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post #336 of 565
3/26/06 at 12:22am
Quote:
Originally Posted by Mr. K6
What are your temps at no Allistah? As long as you stay at 65C or lower, you're perfectly fine for the long run . And 1.42V is fine, I had the same problem. I ran it for 14 hours straight at 1.388V, no errors. One night I was hosting a CS:S server with bots, BAM crashed in 90 minutes. Prime95 is a good program, but it isn't the end all of stability.
Thanks for taking the time to reply Mr. K6. My temps are full load and with the CPU fan on high is 62-63c with the room temp at 72-73F. I just want to make sure Prime95 runs for a really good amount of time without any errors. I'm currently at 9.5 hours and it's been fine. At 10am tomorrow morning I'll hit 24 hours. I'll post my results when I'm done.
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post #337 of 565
3/26/06 at 2:11am
Thread Starter 
If 1.404V stable for 13 hours, you're probably damn close to 100% stable at 1.42V, you should be good to go
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post #338 of 565
3/26/06 at 5:02am
Quote:
Originally Posted by timmy223
i personally think 12hours of prime is considered stable as do most...i think
the way i look at it is, I take the longest period of time that i'll have my cpu usage at 100% non stop, sometimes i will play a game (civ4) for 7-8 hours without a break (its sad really), then I double the aformentioned time period.. so about 15 hours.. Thus I run prime for about 15 hours.. prime is nice, but it's more of a synthetic task, so i generally just use the system for a while, prepared to run into stability issues.. If i can go for a few days without issue, then it's stable enough.. The thing is, if you're not stable at some point down the road, you just have to fix it later.. there isn't any longterm penalties(unless there is..)

Just like 3dmark and stuff, even if you can run the benchmark at top speed, you wont necessarily run as well in real life tasks.. as K alluded to, real life stability is the most important aspect of things rather than tasks that you'll never use in the real world..
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post #339 of 565
3/26/06 at 5:07am
welp, i have given up my quest for a stable 2.8ghz cpu. if anyone would like to take it off my hands and try get it stable be my guest...hint hint mr.K6.. J/K
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post #340 of 565
3/26/06 at 3:03pm
Ok! I have hit the 24 hour mark running Prime95 without any errors! Yay!! Here is the final outcome:

1.8/400@1.34v -> 2.4/533@1.42v - Prime95 ran for 24 hours without errors.
Now that I've passed this stage, I'm going to install my 7800 GTX Go.

Thanks for all the help guys!!

-Allistah

UPDATE: So now that I'm stable at 1.42v, how do I adjust the voltage for when the system is idle or in the lower steppings? I'd like to lower the idle voltage so it'll run cooler and all that. I had problems selecting the right voltages in software last time, so if someone could explain this to me, I'd appreciate it.
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