C90s 8600m gt ddr2 overclocking question

hi guys !!
i´m german so i hope my engish is understandable!
like stated above i want to overclock my c90s´ 8600m gt ddr2! i searched the forum and the i net for stable overclocking degrees, but the memory/core degrees i found came from another notebooks like vostro 1500 etc. and were way too high (like 650/500), well the c90s´heat is a bit "special". i just want to know if a c90s user can recommend some values to me.

thanks guys

 

Well, each GPU will perform slightly different, even if they are all 8600m GT. Most people here on notebookreview found 500/500 to be the "safe" overclocking speeds for the C90S. If you want to push your card further, I'd suggest you increase your core/mem speeds 5mhz at a time until your computer goes unstable.

 

well thanks, seems like i didn search good enough !

i´ll try these settings

hyyuga

 

500/500 is my 24/7 sweetspot. I usually just run stock tho as the performance gain in games is not always reflected like that of a 3dmark score.

Id personally stay under 90c as my max load temp.

500/500 is a good place to start for most, but the only true way I can recommend overclocking is to start at stock and move 5mhz at a time and test each time.

 

When i turn on my A22m IBM Laptop i just bought this is the message how can i fix it please help.

not ACPI compliant? help please

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Alright this is really annoying me. I took my hard drive out of my familys secondary computer thats a really old budget computer a friend of my dads put together years ago, and when I put it back in and boot it up, it went all sorts of crazy. When I took it out, I plugged it in to my PS2 to see if it would fit, which it did perfectly, I didnt mess with it in any way I can imagine would damage it. Now when i boot it up, I get a blue screen about 90% of the time, but then the other times it will boot up perfectly normal, I dont get it. The blue screen reads:
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A problem has been detected and windows has been shut down to prevent damage to your computer.

If this is the first time youve seen this stop error screen, restart your computer. If this screen appears again, follow these steps:

The BIOS in this system is not fully ACPI compliant. Please contact your system vendor or visit http://www.hardware-update.com for an updated BIOS. If you are unable to obtain an updated BIOS or the latest BIOS supplied by your vendor is not ACPI compliant, you can turn off ACPI mode during text mode setup. To do this, simply press the F7 key when you are prompted to install storage drivers. The system will not notify you that the F7 key was pressed - it will silently disable the ACPI and allow you to continue your installation.

Technical information:

*** STOP: 0x000000A5 (0x00000011, 0x00000006, 0x00000000, 0x00000000)
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thanks for taking the time to read this, I whish I knew how to do this text mode setup thing where I press F7, but I dont know what that is, and I think I would need to get past the blue screen to do that lol. I also dont know how to flash/update BIOS or anything, any help is greatly appreciated.

 

Oddly enough mine won't let me clock to xxx/500 whatsoever. I can't even clock to 500/500. My max right now that I am using consistantly is 555/490.

 

Im at 528/498 w/ 169.04 and get 89 max when running rthdribl

 

i tried 500/500 settings and played crysis for about half an hour before my notebook freezed and i had to restart... dunno which temperature my gpu had at this time but before it was around 95 degrees .... scary

 

I run 560/760 ( gddr3 card ) and it's usually pretty cool ( 90 max maybe ) but it soars to 103 and sometimes even 105 ( lock up temp, hate when that happens -.- ) when I play Two Worlds ( only that game...dunno why... )

 

Two questions. What does 500/500 mean? and how do you measure the GPU temp?

I installed RivaTuner and tried 500 Core/ 1000 Shader/ 500 Memory clockings in COD 2 and it locked up after 10 minutes.

 

500/500 means 500 mhz on the core and 500 mhz on the memory. 500/500 may be too high. My best so far is 560/490. Each c90 is different, some can overclock more and some less. You need to jump by increments and keep testing until it crashes.

EDit: You measure temp by clicking on the customize button in the target adapter section. A graph will pop up and record your temperate. Its the bottom graph of course.

 

Yeah mine's hit 527 max on memory but only 499 on the core.

My desktop 8600GT hits 720/900 =/ and that's only because 900 the theorical max of the GDDR3 used on it and 720 is the maximum wit the power than PCI-E port delivers.

 

I was able to hit 560/505 with my ddr2 before it crapped out(dunno why, had nothing to do with oc)
I did make a modification to the heatsink though. The memory is by far what's holding everyone down in terms of cooling and overclocking, core and memory.

The reason is that there are 4 more memory modules under the gfx card that are not actively cooled at all as there are no heatsinks or spreaders on them, so no matter how much the top modules are being cooled, it won't overclock more than the hottest memory module as all the gfx memory are "synchronous".

I basically took off the cooling/thermal pads off the memory and placed them around the core of the second spreader(where the heatpipe is in a plus like symbol) so that there is more contact for heat to dissipate to the heatsink/turboengine. So yeah, the 4 memory modules won't be cooled, but that's exactly like the ones at the bottom. So if anyone can think of an idea to actively or even passively cool all the memory modules, we're stuck around the 510-525 mhz memory limit(unless your some lucky bastage that has some super cool oc'ing modules).

In other words, take the memory out of the equation since there's no possible way to improve the memory with the existing cooling device(it works for ddr3 since it's only 4 modules = 256mb).

Before this mod, I was only able to hit 520mhz core clock stable, but after I was able to hit 560mhz core stable with no artifacts in 3Dmark06.

 

On my old GF 6600 DDR2, I was able to overclock the memory from 550 to 666mhz (!) without cooling on it. When I added spreaders I went up to 670 so it's not a big deal but I guess it was "better" DDR2 than the one we have here since it hits a way higher clock (the max on the 8600m is 600mhz I believe)

 

hmm.. that's actually an idea. really depends on the make and model of the memory chips and what it's rated as, perhaps we should all collaborate and document the memory make, and serial number? that way it's possible for us to conclude which ones are able to overclock better or worst...

 

After reading this thread, im getting slightly worried about my 8600mgt

i clock the core up to 620 and the memory up to 569, ive tried as high as 635/575, and that led to the ultimate video crash where my system started look like a television with a bad reception. After that, been playing it safe with my 620/569 clock (its stable and the temps max at 85c, as apposed to stock 79c)

maybe my cards just built better than most

 

interesting. I'm starting to believe that the F8SV Geforce 8600m GTs made by ASUS are better overclockers than the C90S 8600m GT MXM cards in general.
Gobmonster, what's your 3DMark06 at 620/569 and are there any artifacts like dots, triangles etc? I'm also very curious on the cooling device on the F8SV.

 

there wasnt anything weird that i noticed about it.

 

Simply put. Wow. Impressive.

Is the video card a separate (I know proprietary) board like the x1600 on the W3J? If so, it would be awesome to see the cooling device/setup compared directly to the c90s which most people would presume as more superior.

I think it's more the other way around, I'm actually thinking that higher rated memory modules are used in the F8SV to maintain reliability and stability, in other words, higher overclockability rate. Those numbers in 3Dmark06 nearly match those of ddr3, I repeat, nearly

 

This is 1280x800 or even 1024x768 though. Mostly in 1024x768, because my desktop 8600GT XXX scores a bit lower in the SM2/3 tests with the clocks at 720/900 But 630/560 should score higher than 475/700, or at least as much.

The C90S gpu cooling problem is that the FANS are only activated by the CPU. If we could hear the jet engine while playing a game, then we'd have some low temps on it.

 

Yeah, i forgot to mention, my native res is 1280x800, which makes a small, but very important difference. The test are run at 1280x800

And d3x, im not sure, im not even sure how to tell..... but im sure to find out, it would require me to open my system back up, and i dont have the tool right now (i had to borrow to put in my ram), im deadly afraid of striping those screws and i dont have have a small enough screw driver to do it safely

 

Well if you don't feel confident enough, don't stretch it. IT's cool.. I'm sure someone would eventually open it up one way or another out of curiosity.

 

Yeah that's the default resolution and I'm comparing it only at that resolution.

 

Yeah, it's close with those numbers, of course a DDR3 would be able to go higher than 475/700 when overclocked. My 560/505 registered 4186 in 3Dmark06 1280x800 resolution.

Not exactly. The right most fan in the TurboEngine directly cools the VGA heatsink which is connected to a separate VGA header and operates at it's own individual rotation speed and temperature settings(by the BIOS). Of course, if the CPU fans runs at full speed, the GPU would be cooler.

 

D3x, are you using Vista? If so is it 32 bit or 64 bit? Did you get 4186 with cpu overclocked or in standard mode? Also which Forceware driver are you using? Thanks.

 

Vista 32 bit, with 169.04 forceware drivers running 3Dmark06 @1280x800 . C90S was running in Gaming mode, so 2.93Ghz OC was 564/509 limit, any further had severe artifacts, infact there were minor artifacts while I was running this like one or two occasions(core artifacts though, but I didn't have anyu additional cooling, nor did I have the back panel open), I did however do the core heatpad mod where I used the ones directly from the memory and placed it on the second spreader as I mentioned from an earlier post. If I turn it down to 560/505 I scored 4092. I'm sure if I added some minor tweaks to the heatsink(lapping or better thermal compound application I would probably get it fully stable. I'm actually thinking of squeezing a thin layer of copper in between rather than the thermal pads.

 

Anyone want to shed some light on this?
Ever since I got my 8600 GT DDR2 replaced, I'm getting a strange problem with overclocking. The temps are never too bad, 80 degrees tops but once it goes above it slightly the card automatically runs half the speed at 277/200 ( which is the low power 3D setting). This usually happens when I'm running 3Dmark, so it screws up my scores entirely and has inhibited my OC results which at this moment at 535/490 at most depending on the ambient temperatures, but absolutely no artifacts or other issues, just sudden drop in clockspeeds and I can't get them back up until I reboot. My previous card never had these heat "throttle" issues as it reached to like 90 degrees, and 565/510 mem.

 

I'm not familiar with this overclocking business, so the only advice I can give myself, is to make sure that the "test conditions" are the same (same driver version, same BIOS and VBIOS version, same power management apps running in the background).

 

Interesting, I haven't thought about the notebook BIOS. I've considered the drivers and VBIOS but perhaps roling back a version might do the trick?

 

I was considering the copper instead of thermal pads, but I see it more as s choke point going from the copper to aluminum back to the copper heatpipes. Donno what do you guys think, until now I've always just thought of holding out until the new sinks become publicly available.

 

Update: Well I've lapped the heatsink/spreader again, and this time around I used 600 grit ,then 1000 grit. so it has a nice flat and shiny finish to both the heatsink and heatspreader, took out the heatpads and a fresh application of AS5 and now my temps dropped by about 4-5degrees on load, no ACE door on an Antec Notebook Cooler. 60idle/76max on 3DMark06 - Firefly I was able to get the core up to 565 Mhz but the memory on the other hand is still stuck at 475, if I push any higher the card craps out and goes back to desktop and spews a driver error in the taskbar..