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  Asus A8N-SLI Deluxe FAQ 
 
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Sander Sassen Feb 22, 2005, 04:55pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Alkemyst,

And you have no airflow over the heatsink? Any idea what temperature it is at? I tried it myself with a similar heatsink as the Zalman but I quickly ran into overheating issues when the system was mounted inside a case and the 6800 Ultras, with NV Silencers mounted, block most of the airflow over it.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
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Darragh Sinnott Feb 22, 2005, 05:09pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Hi Leo Lambert,

"Quote"
>>Really, that's news to me. I have 2 6800GT's and at stock speed it's almost >>performing twice as fast in SLI games than my old AGP 6800Ultra. 2 6800GT's in >>SLI is only slightly slower than 2 6800Ultra's in SLI."
>>Also what exactly do you mean by make sure you get a 6800GT with the fastest >>memory. All 6800GT's have a standard stock memory speed of 1Ghz. If your >>talking about overclocking potential, well that's just luck of the draw. I feel very >>fortunate that both my 6800GT's run stable at Ultra stock speeds, but there is no >>way of telling that before you make your purchase.

Checkout http://www.overclockers.co.uk, in the GFX card section, under 6800GT you will see a few different memory speeds available for the 'GT' models from different manufacturers. 700Mhz, 1000Mhz and even one with 1200Mhz RAM.
There is also an MSI 6800 'GT' available (I unwittingly bought two of these originally) to make the SLI system. It turns out they are not even real GT's since the GT spec calls for all pipelines and vertex units to be active, just like the Ultra's.
In the processs of troubleshooting the problems with SLI, I examined the MSI boards with the riva tuner utility and found that a vertex shader and 4 of the 16 pixel pipelines are disabled on these cards by default.
So, no, not all 6800GT's are created equal in my experience.

Of course genuine 6800GT's in SLI should be much faster than a single stock 6800 Ultra, maybe I mislead here a bit, I just meant that there are GT's and there are GT's so be careful to note that the memory speed in in fact the full GT spec of 1000Mhz and also make sure you research the paticular model to make sure it's not a 'lemon' like the MSI 6800 GT's I bought originally.

Best Regards
Darragh Sinnott






Darragh Sinnott Feb 22, 2005, 06:20pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Hello Sander Sassen,
firstly, many thanks for maintaining this site. It's very informative and contains many useful posts from you and others. Mike Thelland is a real trooper and seems very helpful also.

Keeping things cool inside the case is a topic I have a keen interest in, but I'd like to stick to AIR cooling if possible.
Even with a Thermalright XP120 heatsink and a 120mm fam inside the case the temps in my system were high with the case closed. The CPU ran at about 40c and the GPU's at about 50c with the system idle.

I eventually cut two holes in the side panel and mounted two additional 120mm fans, one blowing in on top of the existing XP120 fan and the other mounted lower between the exhaust part of the XFX 6800 cards and the hard disk tray (XFX use the reference cooler design and blow the hot air back inside the case).
Using this setup I got good stable temperatures. With normal house temperatures the CPU runs at about 27c and the 6800 cards will run at 36c with the system idle. I haven't really done a lot of measurements with the system under load but I think the CPU only rises by about 10c or so over the idle temps when under load. After running 3dmark05 the GPU's are back to 35c almost immediately, so I think this setup is quite effective, though perhaps not that pretty. I also found that the GPU would clock higher with this arrangement, whereas before it would not go much above the stock 425/1100Mhz.

I noticed that even small CPU voltage increases will make a significant difference to the CPU temperature, so I keep it on stock settings most of the time, since it's already fast engouh for any game I've tried so far. The only time I have over clocked it is when I have had a few glasses of wine and the 3Dmark05 top ten starts to look like it's worth a try :0

IMHO running this kind of high performance gear in a closed up standard AXT case is giving it a death sentence in the long term.
I solved this by getting more airflow where it was needed, but it's not the prettiest solution. Leaving the side panels off works pretty well also but I have a young daughter who likes to try and stick things into the motherboard every time she sees the case open!

Darragh.

A8N SLI Deluxe
AMD FX55
Crucial Ballistix PC4000 (2-2-2-5 1T) (works up to 208Mhz on my system)
Dual XFX 6800 Ultra
Enermax Noisetaker 600W
Coolermaster Wavemaster case
4xWD raptor 74GB + 1x120GB ide removable
3 x dvd drives
Soundblaster Audigy 2
6 case fans (2 120MM)
No power problems

Mike Yi Feb 22, 2005, 06:47pm EST Reply - Quote - Report Abuse
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Edited: Feb 22, 2005, 06:47pm EST

 
>> Re: Asus A8N-SLI FAQ
FWIW, I've had Prime95 running for about an hour now. ASUSProbe is showing the CPU at 43C, and the chipset at 29C with the case all closed up, and the Zalman passive cooler on the chipset. Of course, there's only 1 6800GT installed right now, so that's probably a bit lower than normal, but now much.

Leo Lambert Feb 22, 2005, 07:15pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Darragh Sinnott

"Qoute"
Of course genuine 6800GT's in SLI should be much faster than a single stock 6800 Ultra, maybe I mislead here a bit, I just meant that there are GT's and there are GT's so be careful to note that the memory speed in in fact the full GT spec of 1000Mhz and also make sure you research the paticular model to make sure it's not a 'lemon' like the MSI 6800 GT's I bought originally. "

Oh you bought one of the MSI 6800GT's, did you read what MSI were caught out doing. They were using a Vanilla 6800 core on some of there 6800GT's, the GPU/Memory clock speeds were at standard GT rates but it only had 12 pipelines. That was one of the worst displays by a GFX card company i've seen. I hope you managed to get a full refund. MSI are in my bad books now.

Just on another note is anyone getting as BSOD when quiting UT2K4, i don't get it everytime but about 70% of the time i get it.

Leo Lambert Feb 22, 2005, 07:27pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Forceware 75.90 BETA now available.

http://downloads.guru3d.com/download.php?det=999

Haven't used them yet but will try them later today.

Alkemyst Darkened Feb 22, 2005, 07:30pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Sander,

Well I do have three front 80mm fans and those may be helping to cool it. The are 20dba/27cfm, and a pair in the back blowing out (including the PSU in that count of 2 with an identical fan).

Does the motherboard temp read from the nForce4 chipset or elsewhere?

I stay at 39C motherboard and 40C CPU idle.

Under load not much higher on the motherboard, but up to the mid/high 50's on the CPU fully loaded.

I have been stable...I will keep my eye on it more....

My setup can be seen at http://30moons.com/pc_chiapetpics.php






Alkemyst Darkened Feb 22, 2005, 07:37pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Rob: I use OCZ EL PC3200 Platinum Rev. 2....2x512MB

Darragh thinking 40C CPU is hot is pretty extreme. The newer CPU's are meant to run at a higher than 'normal' temp compared to processors even a year ago...cooler is usually always better but you get to a point of severe limiting returns.


Jim Chaney Feb 22, 2005, 07:47pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Well, finally got the 71.81 installed by turning off the DEP completely (option of /NoExecute=AlwaysOff in boot.ini).

Even so, it recognises a second card (I have two monitor icons in the Display Settings, and two cards in the drop down) but wont let me enable SLI. Says:

You must remove any graphics cards that are not compatible with NVIDIA Scalale Link Interface (SLI) technology before you can enable SLI.


Looking very carefully at the two cards, they have the same lettering in the top corner - SPPX43 REV:P216A03. Only minor difference is one has a black (timing crystal I think) with MAGIC SHLP 1207-1R0 and the other has a crystal (in exactly the same location) that is shiny silver, with no readable writing. Guess they can change items like that out without changing the board? Just a component supply issue?

The Power supply is not a problem at the moment, but if I get brownouts Ill replace. But what do to enable the SLI? Any chance of the mighty Sander answering this one :o) ?

Cheers,

Jim

PS - any chance of splitting this thread soon - maybe into overclocking / installation / PSU / benchmarks (aka bragging ;) That would make it much easier to read - for me at least...

nmo Feb 22, 2005, 08:11pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Here's an A8N-SLI Deluxe quirk that's got me a bit puzzled. When I'm overclocking and I switch the clock up over 255 MHz certain programs will see the wrong value for HTT. A perfect example is 3dMark0X, which will see the following:
254 = 254
255 = 255
256 = 0
257 = 1
267 = 10etc.

My last 3dMark05 score posted with a 20MHz clock. (it was really 277).

CPU-Z isn't fooled by this rot, but there is a growing list of programs that seem to freak out when I get up over 255, including Asus's AiBooster utility, which shows a random number or a blank for the clock/FSB.

Has anyone else experienced this strangeness?

Athlon 64 3000+ @2.5GHz
Asus A8N-SLI Deluxe
6600GT@551/1120MHz
Simon Lu Feb 22, 2005, 09:04pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
i got the A8N non deluxe version with 1001 bios, 2x512 Corsair XMS in blue slot, Tagan 480W( got it today!)
ASUS 6600 GT /TOP at SLI, and 74G WD... the system shuts down itself during installation of XP... took out one ASUS, same problem, took out one slot of RAM, same thing.....
is it the problem with the HD?? cant think of anything else? or its the 1001 BIOS for the non deluxe version?
thank you guys..

i also got an answer to the ASUS 6600GT problem that i read on last page, check if they are both TOP version, or TD version, the TD version uses 2.0ns ram, the TOP uses 1.6 ns ram..... i think they need to be matched up....

Aaron Wascher Feb 22, 2005, 09:15pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Mike,

I formatted and installed everything fresh, and I've got a great network connection now. I guess this is a lesson for everyone to start over whenever making this large of a change to your components. The clean install makes for a FAST system!

I did the WinXP, SP2, nForce 6.39, nVidia 71.81, Windows Updates for my installation progression. Now it's time to go try this puppy out in some games... :-)

I appreciate your help trying to get through my problems (even if they were self-inflicted).

A64 3500+
ASUS A8N-SLI Deluxe
Geil 1GB PC3200 (2x512 matched)
XFX 6600GT

Alkemyst Darkened Feb 22, 2005, 09:25pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
New BIOS finally has the CHIP_FAN able to be disabled. You can monitor CHA, CPU, CHIP as well if you have rpm sensing fans.

Other than that don't see much different to my set up (no raid, no on-board LAN or AUDIO).

Notes for the BIOS:
1. Fixed S3 resume fail in SLI mode.
2. Add CPU, CHIP, Chassis Fan check Item in Setup and set Chassis Fan checking default to Disabled.
3. Show SATA mode on summary screen.
4. Update NVRAID BIOS to 4.81.

Greg M Feb 22, 2005, 09:44pm EST Reply - Quote - Report Abuse
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Edited: Feb 22, 2005, 09:45pm EST

 
>> Re: Asus A8N-SLI FAQ
Hey sander, Can I add that an ASPIRE 420 watt PSU works beautifully on a Single 6800GT (OC'd) based system with DVD-ROM, DVD-Burner, floppy, Dual 80GB Segate 7200RPM drives in RAID-0 and FX-55

Oh, and the audigy, 3x80MM fans and a 120MM LED fan. Plus Cathode and 4 front LED's.

All runs 24/ at full CPU load.

Yes, I'm a light whore.

----
FX-55, 2x 1GB GSkill, X1800XT (512MB), 2x250GB RAID-0, DFI SLI-D
http://www.gandmpc.com <-My 'project'
http://www.knownpsycho.com <-Web games!
Rick ELwood Feb 22, 2005, 09:47pm EST Reply - Quote - Report Abuse
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>> A8N-SLI Deluxe Does not boot, cpu fan does not power on
I have the A8N-SLI Deluxe m/b I have been running the machine for a bout a week without problems until today the mb will not boot. I get no signal to the monitor, no beeps, no message through the speakers etc.
The strange part is: all fans spin up (including mb chipset fan) EXCEPT the cpu fan, the harddrives don't sound like they are spining up either. The green light comes on and I can't figure this out. I haven't seen this one in the FAQ yet.

System specs:
AMD 64 3500
dual channel 512mb (1g total)
nvidia 6600GT
600W power supply ver 2.0

Things I have tried:
pluging the cpu fan into a chasis fan plug (cpu fan powered on, but still did not boot)
re-seat the video card (no difference)
re-seat the ram (no difference)
unplug the power for 10 min (no difference)

Please help as my system is down!


Mike Yi Feb 22, 2005, 09:59pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Did you try powering down, removing the battery and resetting the BIOS (follow the instructions in the manual for exact proceedure)? I can't tell you why it won't boot, but that happened to me before, and clearing the BIOS usually fixed it.

Rob Ciraco Feb 22, 2005, 10:03pm EST Reply - Quote - Report Abuse
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Edited: Feb 22, 2005, 10:04pm EST

 
>> Re: Asus A8N-SLI FAQ
I'm confused and maybe someone can shed some light. I posted a few posts back on getting a "System Failed Memoey Test" on boot up, and only once in a couple of days, other than that everything boots up normally, now is this true what Mike has replied and I'm not questioning mike's knowledge but I like to get more feed back . I see some people in this forum and other forums with pretty much the same set up as me running timmings of 2,2,2,5 @ 2.8 &1T with no boot up issues, this is why i'm confused. I set up my bios as suggested in this thread, maybe I'm missing something, Please help, and i apologize if I'm repeating myself.

"2,2,2,5--2.8v--1T?

The max you can go on a AMD FX55 system with your Corsair RAM is 2.5-3-3-6 2.8V 1T and @ 212 Mhz will be stable with similar components and air cooling as listed below. You can set to 2T for more stability, and as far as it happening the first time you fired-up, it can happen to anyone.

On Intel systems you can almost bring the RAM to 2.2.2.5 specs, but 2.5-3-3-7 2.8V 1T can get you up to 250MHz.

Specs

A8N SLI Deluxe w/ 1004 Bios
FX-55 CPU not overclocked
1G Corsair TwinX 3200XL Pro (2 x 512's) right now 2.5,3,3,6--2.75v--1T DDR400 ( 2,2,2,5--2.8v--1T DDR400?)
2 Westrn Digital 36G Raptors in RAID 0 on nVidia controller
2 6800 Ultra's in SLI mode
Silverstone Technology Nimiz Black Aluminum Tower
SST-TJ03B w/ side window
PC Power Cooling Turbo 510 Deluxe SLI PSU
Generic CD ROM & Floppy
Win XP Pro w/ SP2

Alkemyst Darkened Feb 22, 2005, 10:23pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
There is something still wrong with the memory timing/divider settings on the A8N-SLI...you can't compare it to other boards.

I know my RAM can run better than 2-3-3-5 at 233Mhz, I should be able to get to 250 easy and 270 relaxed a bit...however the BIOS won't cooperate at this time.

Anyone using 1005?

Whizzz AKA: SLI Scientist@Work Feb 22, 2005, 10:46pm EST Reply - Quote - Report Abuse
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Edited: Jun 21, 2005, 04:45pm EDT

 
>> Re: Asus A8N-SLI FAQ
Alkemyst Darkened is not running the FX55, that's why he has different FSB's, etc..., you will get better timings on the 3000+ etc... Call Corsair they will tell you the same thing, I just spoke to them today because I was in doubt as well, but my testing proved to be correct. There is a way to get the timings down to 2-2-2-5 1T, bring your RAM down to 333 MHz and overclock from there, defeating the purpose of having DDR 400 MHz RAM wouldn't you say? When you went to the other forums did they mention how to get 2-2-2-5 on the FX55? I just installed a Prometia Mach II GT -65C CPU @-30C I get great MHz 3250+ and I still can't get the timings to run at 2-2-2-5 1T DDR 400 MHz Stable. AMD says 2.5-3-3-6 1T MAX (STABLE) for the RAM and similar AMD systems. I am buying new RAM!

Another test I did was try 1 stick in DIMM B1 of my Corsair Twinx 2048 PC 3200 C2 PL. The result was lower Latencies with one stick, I was able to get 2-2-2-6 1T 2.8V but at a loss of 1 Gig of RAM, not good!
When I added the other stick I noticed that latencies needed to be increased at the same DDR 400 MHz setting to be stable.
I borrowed two sticks of the same RAM from my friend and my RAM dropped to 333 MHz default as I set it to AUTO in the BIOS, no stability at DDR 400 MHz with the same latency settings.

So you see! as you add more sticks of RAM the latency settings need to be increased and the Frequencies will drop to compensate for the extra capacity in RAM MB's, the higher the amount of MB's per stick the worse it will be. So don't put 4 Gigs of ram, 4 one gig sticks in a board. Just too many clocks to work with large amounts of RAM Data MB's as the controller cannot handle it.

Mike

PS: After you brought your timings down did it not correct your boot-up problem as I said it would?

Rob Ciraco Feb 22, 2005, 11:03pm EST Reply - Quote - Report Abuse
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Edited: Feb 22, 2005, 11:04pm EST

 
>> Re: Asus A8N-SLI FAQ
Mike your right the info on the other forums did not state how they got 2,2,2,5 1T w/ an FX-55, and I dont think I'm going to bring my ram down to 333 either, so far no boot issues with timmings @ 2.5,3,3,6 @ 2.75v & 1T. Mike thanks for all your help and again I wasn't questioning you knowledge......Are you getting new RAM?


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