At long last, my X2 3800+

keitaro

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Jan 30, 2003
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After a gruesome 6 hour install (disassembling, cleaning, evicting dust bunnies, reassembling, plugging, and lastly POST), I finally got the machine up and running minimalistically. Well, not absolutely minimalistic but basic nonetheless. Here's my setup thus far:

MSI K8N Neo2 Platinum
Crucial PC3200 512MB x 2 (early generation, uses Samsun chips, rated at 8-4-4-3)
Zalman CPNS-7000B-Cu (DAMN this sucker's heavy)
Zalman VF700-Cu (to replace the ZM80-HP; installed on ATi R9800 Pro)

I ran into a minor problem of trying to boot via SATA. I do not have a pair and I was hoping I'd get it to boot in the same style/way that I had on my A7N8X Deluxe. It seems Windows XP didn't like it... a lot... tried the latest from nVIDIA's but I was getting frustrated. So I fell back to using PATA on my boot/system drive.

I ran Memtest86 v3.2 for about 6-7 hours straight after I got the system finally running. I had to reset the RAM speed to run at DDR-400 even though I told it to run via SPD. The test was running at stock CPU speed (2GHz). No errors, all passed.

The Windows install was probably the most frustrating part. The drivers from MSI was outdated and too old that it cannot be used to set up Windows. Then Windows would complain of not seeing any HDs when I had the drivers (from NV) loaded from floppy. It seems no matter how hard I tried, something would not go right when it should.

After getting the darn thing to install and finally into desktop, I started setting up the basics: Services, preferences, the annoying "Low disk space" warning, as well as getting the network to work. Again, I ran into another snag. NV's own NIC wouldn't cooperate. After I loaded the Realtek Gigabit drivers from CD, I plugged the cable in and I was on my way. No hassle. No frills. No problem.

Installed Firefox and my extensions. Installed Ghost, backup, and let the testing begin.

I used "Stress Prime 2004" since I was taken by the "ooh, lookie, a nice GUI for Prime95!" screenshot and ran two instances. At stock speed, it reported no problem. But I didn't run the "standard" test time. After I believe was an hour, I shut the system down, claim/call it stable (at stock speed), and went back into BIOS. There I started remembering some of the things in the A64 O/C'ing guide thread. But oddly enough, there's nothing in regards to HT speed sans for the multiplier. I do remember the 1GHz magic number so I bumped the FSB to a modest 220 (an even 2.2GHz for a nice free $100 upgrade), set the HT multi to 4x (= 880MHz HT), and rebooted. That's where I am now.

At 3h 15mins, I'm at this paragraph. I installed SpeedFan since it's a small util that also tells me temps and found that it's running at 49-51C. If this is correct, then I'm a very happy customer. :)

Comments and further details about what I've gone through are appreciated. I'll be hoping to try out 240FSB tomorrow. I'm very reluctant to try out 3DMarks and any other Marks kind of benchmarks. Something useful (ie F@H) would be great to test the CPU (and optionally memory) further. I'll post follow-ups as I make progress on this baby monster.
 

n7

Elite Member
Jan 4, 2004
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Did you actually get your SATA HDD working?

If not, the drivers are hidden on the CD; i'll look up exactly where if you want.

Very important: Make sure you are using the Silicon Image SATA ports, the ones just above the AGP slot.

The nVidia ones lower on the mobo do have locks, which will mean disasters when attemting to OC.

Keep us posted; i have the same mobo, so i'm happy to help if you have any other questions.
 

n7

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Jan 4, 2004
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Also, to unlock the hidden settings in the Cell Menu area, type Shift+F2 then Alt+F3
 

keitaro

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Jan 30, 2003
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I initially plugged them into ports 1 & 2 (the bottom pair). But that's prior to doing any kind of o/c'ing. I couldn't get the blasted thing to boot at all. It wouldn't exist just to boot or even be detected when I tried to install Windows.

I'll try plugging them into the top pair after I've verified the P95 run for about 2 more hours. Drivers required? (if yes, which folder, I see two here -- Sil3114 and Sil3132) I think I may also need your boot.ini file too since Windows may not like being plugged from one controller to the next.
 

yourdeardaniel

Golden Member
Mar 20, 2004
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never had problem with SATA HD detection. did you go into bios and check your IDE/SATA controller setting? i think there's a option call Enhance IDE or something, that lets you set the SATA00 as master, SATA01 as slave, etc.
 

deanx0r

Senior member
Oct 1, 2002
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if you are running BIOS 1.9, make sure to update to the latest one (1.A) as the 1.9 only gave me TONS of BSODs.

As for the nVIDIA LAN not working, it's a present from BIOS 1.9 as it deletes the MAC address. You can go in the integrated features in the BIOS, press SHIFT +F2 and ALT + F3 and the NV MAC address should show up. Just enter the value there. Your MAC address can be found on that sticker located on the parallele port
 

keitaro

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Jan 30, 2003
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Originally posted by: deanx0r
if you are running BIOS 1.9, make sure to update to the latest one (1.A) as the 1.9 only gave me TONS of BSODs.

As for the nVIDIA LAN not working, it's a present from BIOS 1.9 as it deletes the MAC address. You can go in the integrated features in the BIOS, press SHIFT +F2 and ALT + F3 and the NV MAC address should show up. Just enter the value there. Your MAC address can be found on that sticker located on the parallele port
Wha....? Well that sucked. Thanks for the heads up. I'll definitely code it in and retry again.
 

keitaro

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Jan 30, 2003
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update for above setup... Much thanks to n7 for the SATA tip. I now have both HDs connected to SATA. I also had disabled all forms of RAID in the BIOS and it now works like a charm. No need for reinstall nor installing any SATA drivers.

I've ran the system at 2.2GHz for 6 hours straight w/o any errors. I am currently testing 2.4GHz and I am seeing it fail P95. I'll do some voltage bumps. However, I am quite disappointed in the CPU voltage options. I'd like to specify an exact value rather than go by percentage. Any help will be appreciated. BIOS and SpeedFan reports the CPU voltage at about 1.25v. Normal or simple undervolting by the board? Mark? Duvie? Anyone? Wanna point me to the right path? :)
 

keitaro

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Jan 30, 2003
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So what does a hardware tinkerer like myself do at 5AM? He takes a screenshot of course! :D

I apologize for the huge file size (no image proggie installed yet, doing that after I "verify" it as stable). But here's a link to a screenshot with two Primes running. I'm still seeking for something to further stress/test the CPU more, preferably something simple and small (ie, doesn't require a huge download). I'm considering doing F@H again for ol' time sake but I'm reluctant to do something that may end up being 'temporary'.

Anyway, enjoy the screenie. Oh, as a parting note, I'd like to mention that I am not aiming high. I'm going to continue being a modest overclocker for a while. This'll be #2 in my rigs that I have overclocked. The first was an AXP2100+ (1.73GHz) that I overclocked to 2700+ speeds with a simple FSB bump to 166/333.
 

n7

Elite Member
Jan 4, 2004
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Nice work keitaro

One thing you are going to want to do is use the CPU voltage Over VID.
As you can see already, the Neo2 undervolts alot. Was your stock vcore? 1.3V or 1.4V? I know the Manchesters can vary.

I use 1.4V + 8.3%, which turns out to be roughly ~1.53V for me anyway.

Try 1.4V + 5.0%, or whatever gets you around 1.45V
 

keitaro

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Jan 30, 2003
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Goooooooooooooooood morning... er... wait... not morning...

Anyways, having finished doing some things, I come back to check up to see Prime still running 9+ hours straight. Woohoo!

So the board really does undervolts... I just need to make sure that it's either actual undervolting or some sort of BIOS bug. The initial startup at stock speeds the BIOS reported the CPU volt to be at ~1.25v. The OPN AMD defined on this one is 1.4v. SpeedFan currently reports the voltage to be at 1.33v. At this voltage I've ran Prime nonstop for 9+ hours to now. Things are looking very good. Unbelievable the amount of headroom this thing has.

I was a little worried that I may not get a big overclock due to the complexities of HT and dividers. But it seems the memory "lock" pretty much solves that part of the equation. At 240fsb and 4x on the HT multi, it rounds up to a nice 960MHz.

I'd try to go for 250 but I don't wanna overdo it. Loaded temps right now is hovering at 55c and that's with a slightly cool ambient air. If I had gone with the XP-90, I probably would have tried for 250. But I'm not too worried about that. A X2 3800+ CPU at 4600+ speeds? Yep. I like the sound of that!
 

Unkno

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Jun 16, 2005
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Originally posted by: keitaro
Goooooooooooooooood morning... er... wait... not morning...

Anyways, having finished doing some things, I come back to check up to see Prime still running 9+ hours straight. Woohoo!

So the board really does undervolts... I just need to make sure that it's either actual undervolting or some sort of BIOS bug. The initial startup at stock speeds the BIOS reported the CPU volt to be at ~1.25v. The OPN AMD defined on this one is 1.4v. SpeedFan currently reports the voltage to be at 1.33v. At this voltage I've ran Prime nonstop for 9+ hours to now. Things are looking very good. Unbelievable the amount of headroom this thing has.

I was a little worried that I may not get a big overclock due to the complexities of HT and dividers. But it seems the memory "lock" pretty much solves that part of the equation. At 240fsb and 4x on the HT multi, it rounds up to a nice 960MHz.

I'd try to go for 250 but I don't wanna overdo it. Loaded temps right now is hovering at 55c and that's with a slightly cool ambient air. If I had gone with the XP-90, I probably would have tried for 250. But I'm not too worried about that. A X2 3800+ CPU at 4600+ speeds? Yep. I like the sound of that!


Currently, what's your vcore at at 2.4ghz
I think you could get it to 2.5 but it would take more voltage the higher you get...2.5 should be like the sweet spot.
 

MDE

Lifer
Jul 17, 2003
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We'd love to get that X2 running Folding@Home :). Keep us posted, I'm strongly considering selling off some of my stuff and getting an X2 3800+.
 

keitaro

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Jan 30, 2003
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If by vcore you mean the CPU voltage, then it's currently at about 1.33. When I started testing stock speed, it was at about 1.25v. Prime would fail at some point on 2.4GHz @ 1.25v so I bumped the voltage up a notch.

With temps at 55c on 2.4GHz, I think I'm going to stop there. I don't wanna go too far and I think at 2.4 it's good enough for me. At that speed, it's essentially a 4600+ CPU. Yet I paid hundreds less for it. So I'm pretty happy about that. The system's at over 10 hours of prime. I'll start installing some apps at around 11 hours. Maybe tonight I'll be able to start playing Guild Wars again. :)
 

deanx0r

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Oct 1, 2002
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VID settings do not work. I tried to crank it up above 1.4v and it just shows in the 1.35v range in CPU-Z or speedfan. I used CPU voltage Over VID (3.3 or 5%) boost the Vcore.


Strange, I am unable to pass Prime with default voltage (1.35v) when overclocking at 2.4GHz. I have to crank it all the way to 1.47v in order to achieve stability, but I am running into lots of heat.

Running about the same set up as yours.

X2 3800
2GB of RAM
Neo2
6800GT

HT is set at 4
RAM divider at 166
FSB is 240


http://deanx0r.net/img/new_puter/prime01.png
 

n7

Elite Member
Jan 4, 2004
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keitaro: Your voltage is still far too low, or it seems that way anyway.

It's still below stock vcore if i am reading what you said correctly, which means you are running @ 2.4 Ghz undervolted :Q

That's extremely good.

If you use the Over VID % to get to about 1.45V, i'm guessing you'll hit 2.6GHz, maybe more.
 

keitaro

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Jan 30, 2003
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I don't understand it why it undervolts like it did either. But it ran Prime-stable at stock speed (that is, while I tested it for a few hours) with that voltage (I swear to god it's true. I mean if it's MSI misconfiguring the offset, then we got a serious problem). And then it ran at 2.2GHz at that same voltage for a good 6 hours.

I personally think it's great that the CPU can operate at such low voltage. But does anyone know if that's intentional or an offset bug by MSI?

Right now I've a few apps loaded and will be running some additional Primes to add to the load.
 

n7

Elite Member
Jan 4, 2004
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It's a bug. A hardware issue, i mean. AFAIK, it actually does undervolt, it's not like it's just reading wrong.

Been a bug since the Neo2 came out, & i think most everyone who has the board has it.

For me, using the Over VID seems to fix it.

Otherwise vcore runs way below what i set it as.

Seriously, if you bump it up to around 1.45V, i bet you'll hit 2.5 or more easily.
 

keitaro

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Jan 30, 2003
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What's your idle and load temps for yours, out of curiosity? I'm concerned that if I were to hit 1.4v exactly that the temps would be too high for my taste.
 

n7

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Jan 4, 2004
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Meh, that's another issue with the Neo2.

Some people get accurate temps, others don't.

I'm one who doesn't

My Venice idles 42-48C & hits 65C under load :roll:

Or so says the faulty sensor.

I know there's no way it's actually that hot...but what can i do...
 

bobov

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May 12, 2005
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My X2 3800+ (ADA3800DAA5CD) prime stable at

2000Mhz @ 1.26v (set 1.30v in bios, cpuz shows 1.26v. my mb is dfi nF4 Ultra-D)
2400Mhz @ 1.28v (set 1.325v in bios)
2500Mhz @ 1.36v (set 1.40v in bios)

I'm testing it at 2600Mhz @ 1.45v, one and a half hour prime stable so far.

 

deanx0r

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Oct 1, 2002
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Originally posted by: bobov
My X2 3800+ (ADA3800DAA5CD) prime stable at

2000Mhz @ 1.26v (set 1.30v in bios, cpuz shows 1.26v. my mb is dfi nF4 Ultra-D)
2400Mhz @ 1.28v (set 1.325v in bios)
2500Mhz @ 1.36v (set 1.40v in bios)

I'm testing it at 2600Mhz @ 1.45v, one and a half hour prime stable so far.

What motherboard?
What kind of temps are you getting?
Are you running two instances of Prime95?

 

bobov

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May 12, 2005
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Originally posted by: deanx0r
Originally posted by: bobov
My X2 3800+ (ADA3800DAA5CD) prime stable at

2000Mhz @ 1.26v (set 1.30v in bios, cpuz shows 1.26v. my mb is dfi nF4 Ultra-D)
2400Mhz @ 1.28v (set 1.325v in bios)
2500Mhz @ 1.36v (set 1.40v in bios)

I'm testing it at 2600Mhz @ 1.45v, one and a half hour prime stable so far.

What motherboard?
What kind of temps are you getting?
Are you running two instances of Prime95?


DFI nF4 Ultra-D MB, XP-120 + Panaflo 120M.

50-53C for 2600Mhz @ 1.45v.

Yes, two instances Prime95.