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  Asus A8N-SLI Deluxe FAQ 
 
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j l Feb 05, 2005, 01:13pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
varun rao

I take your points and mostly agree, but I still think that any recommendation should be pretty carefully qualified.

Anyway for the record, the system runs fine with a pair of 6600 GTs in SLi mode, so that makes it unlikely that the problem is being caused by bits such as memory or CPU (FX-55 and currently standard Micron CL3 DDR400, but I have better DIMMS available if need be). My view therefore is that it is probably either a problem with the cards (6800 Ultras - OEM samples with vanilla NV branding) or the PSU. As I have said, I have the Tagan 480w PSU that Sander has said will work, and it doesnt work with the 6800s on this particualr rig at least.

One area of guidance that might be helpful is how to set up a dual PSU rig - I am considering dedicating a separate PSU for the video cards. Is this a sensible idea (and how is it best put into practice?)?

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Trishul Thejasvi Feb 05, 2005, 02:34pm EST Reply - Quote - Report Abuse
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Edited: Feb 05, 2005, 02:50pm EST

 
>> Re: Asus A8N-SLI FAQ
i have a OCZ 520W Powerstream (non-EU), OCZ 1GB 3500 2.5-3-2-8, 1x 74GB Raptor, 1x 300GB Maxtor Diamond 10 NCQ, a Plextor 712A and 2x XFX 6800 Ultra. a couple of UV tube lights and external devices are one DVD-RW, Sound Blaster Audigy NX. XP SP2

basically when in SLI, i tried Chronicles Of Riddick, within a minute or so, Dead lock crash. was not happy, didn't have one single crash previously before upgrading to this mobo.

but after getting the most recent official Nvidia beta drivers, 67.66, installing the new nforce drivers 6.39, and changing the Bios as indicated in the first post of this thread, not only does Windows load up very quickly now, i can run SLI without crashing, previously with one AGP BFG ultra on a AV8 3dMark was 3814, now just finished on SLI and got 6569, both scores were done in untweaked system, with normal programs running etc.. i did see a slight performance increase in Riddick, it was already running pretty darn well, but now its crystal smooth, though still can't use shader model 2.0++, i don't know who can, BUT and big BUT, there were graphical glitches concerning lighting, and in the 3D mark, the glitches were extremely obvious...

but the fact that it now works, leads me to believe the problems are purely driver related, i don't think its an issue with the PSU, although i will be upgrading to a one of those Power Cooling 510 SLI when stock arrives here in the UK. Currently i have one enchanced VGA power lead, plugged to each card, plus one molex both off seperate rails, but not dedicated, they are sharing fans, lights, DVD and EZ-plug. I do see having dedicted 6pin plugs for each card being a plus.. but for now the OCZ 520W seems to be working fine.. the graphical glitches i imagine will be solved in future with patches, drivers etc.. i will try Far Cry, HL2 soon. as well as maybe changing around some of the power connections to see if the glitches dissapear.

I was thinking this was all a big waste of money, but now am feeling better, thanks to this forum. Running in non-SLI everything is fine, but i at least know that all my bases will be covered for a year or so with SLI, for the moment i think many will agree there isn't a game that one Ultra can't handle perfectly fine, hopefully by the time higher spec games are released, the driver support will have appeared. I do agree with the general concensus, that SLI is no way ready for the mainstream yet, and that the A8N isn't perfect (yet).

I did experience the hard drive NCQ issue after updating the BIOS to 1003, my Maxtor just plain dissapeared, i tried 1003-008, same, and the most recent 1004-001, same again.. just went back to 1001, and all is fine.. no biggie for me as the fixes in the updates don't affect me, but i could see how annoying it would have been had it been different.

my only problem now is not being able to run SLI without unplugging my 2nd monitor. that is VERY annoying.. i don't mind disabling one monitor off for gaming, but you'd think having 2 graphics cards would really help a dual monitor setup.. that to me is a massive oversight.

Note: just ran 3dmark on in non-SLI, and got 3828, very, very slight improvement over previous AGP setup, but still shows that SLI has the potential to be a good 75-90% improvement.

Trishul Thejasvi Feb 05, 2005, 03:17pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
just tried far Cry, now i'm much more sold on SLI -- everything is on max, EVERYTHING, and it runs smooth as hell, and with no glitches, previously i couldn't have v-sync and all the AA and AF on max (btw run at 1280). I'm not madly technical, but i'd say for the intermediate non-overclocker like myself the OCZ 520 powerstream, is suitable for the A8N with two 6800 ultras.

the only issue now is temperature and noise. but i'm overall happy with the A8N-SLI now.

james davidson Feb 05, 2005, 08:01pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Hi all,

Absolutely great FAQ about this mobo :) You all know how it is, when you search for info on hardware, you only find small snipits off info. Then piece it all together from bits of rubbish, so refreshing to find such a good source.

Anyway, i was wondering about teh choice of PSU listed earlier in the thread. Obviously i dont doubt the testing done and that they are compliant. But, i am very curious about the fact that the ones i checked out seem to be v1.3 ATX and the mobo is stated as requiring ATX v2.

My Questions are this....

1. Whats the difference between the two types

2. Why is it that a v1.3 psu works on a v2 board.

Love to know the answers to fulfil my curiosity :)

Thanks.

(cant wait to get the rest of the parts to go with this sli board next to me)

George Kisslak Feb 05, 2005, 08:38pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Regarding mirroring with NVRAID... Guess I'm a bit new to this and was a bit confused earlier. Now I understand why XP saw two drives - I had to use F6 and load the drivers. Guess the NVRAID is not a true hardware RAID solution...

But now I also understand why I've seen complaints about SATA optical drives in the A8N-SLI. The XP install went smooth when using a Plextor SATA DVDr and a single non-raid WD760 Raptor. But the XP install to a NVRAID mirror of 2 WD760s hangs when using the Plextor SATA. If I use an old IDE optical drive instead of the SATA optical drive, the RAID install works (but it's a lot slower!)

So - steer clear of SATA optical drives if you are going to use NForce4 NVRAID. (Come on ASUS - what's the deal?!?) Maybe the 1004-final bios will fix some of these problems when it finally comes out, I dunno.

A8N-SLI BIOS 1003
Athlon64 3200+ 90nm
2 of WD760 raptors in RAID1 configuration on NForce4 NVRAID
PCP&C Turbo-Cool 510-SLI

--George

Gary Thomas Feb 06, 2005, 12:43am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
I stumbled on this site today and have read the posts and this is a very helpful thread. Many thanks to you Sander.

I have some of the parts for my SLI system that I'm building including the Asus A8N-SLI Deluxe, but am still waiting on the 6800 Ultra cards. I have spent much time researching the SLI tech and I would like to offer a few comments. Primarily the PSU issue.

SLI technology and the commensurate power needed is new and the power needed for these systems has been unheard of in home computers up to this point. Many of you have been able to get by with cheap PSU in the past, well you can forget that if your going with a highend SLI sys or your going to pay a huge price. The reason that the PC Power & Cooling 510 SLI PSU is the Mercedes of power supplies is for one reason; the size of the capacitors, they are over 4,000 micro-farads in size, compare the Antec Neopower 480 caps that are in the 2,000 micro-farad range or half the the capacity of PC Power PSU. Why is this a issue? If you use the analogy that a capacitor is a resevoir (and it is) once it is depleted then power in the rails will begin to sag and without getting very complex this puts a tremendous load on the PSU as it tries to replenish the caps that are depleted. Without getting very technical the bottom line is tremendous heat is created. If your PC is in a basement or in a room with a realitively low ambient temperature that will help, but right now its winter time where many SLI systems are being used for the first time, what will happen when summer arrives? I think many with inferior PSU's are in for an expensive lesson. When the summer temperatures arrive your fans are going to draw more current putting a greater demand on your PSU and because the ambient temperature is higher the PSU will not be able to dissipate the heat as efficiently. So when I read about erratic performance with RAM, HDDs, optical drives, etc. its not surprising. Coudl it be driver related? Sure. What about the Tagan 480 that is giving the guy the problem in the previous post? Hey maybe you have a defective PSU. PC Power & Cooling has had defective units as well. All I'm saying is your going for the bleeding edge of technology and you should buy a robust quality PSU or avoid SLI altogether. So imagine a high wattage (greater than 480) with smaller caps than even the Antec Neopower 480 and you have a recipe for disaster! If your lucky when your cheap PSU fails (and it will) it will only take out the PSU, but remember along with heat undervoltage is the enemy of electrical components. During brown-out conditions that puts a tremendous strain on refrigerator compressors and they have alot more wiring to handle the heat that the micro-circruity of your CPU or your video cards. Unfortunately, some of you will lose more than your PSU, you may lose a CPU and both video cards and that will have been a very expensive avoidable lesson. I have no reason to doubt Sander's recommendation for the Tayan 480 and the reason its inexpensive is its made in China it has a 3yr warranty. The PC Power & Cooling is made in the US and is about 3 times the price with a 5yr warranty, but I know they stand behind there product. For those of you who want to absolutely future proof yourself with future power requirements, I saw that PC Power & Cooling is coming out with the "Turbo-Cool 850 Deluxe" with 850 watts of continuous power (and I'm sure with capacitors to match) and the price of admission will be $430, still less than a 6800 Ultra.

Do you recommend updating to the current bios 1003 at the time of building the PC or only if you have a problem?

George Kisslak Feb 06, 2005, 01:40am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Hey Gary,

I echo your thoughts on PSUs. That's why I have the PCP&C Turbo-Cool 510-SLI. No issues there! I would recommend flashing to 1003 final if you don't already have it as it solves more problems than it creates. I would stay away from beta 1004. These guys can barely get the final versions right. I would also make sure you get memory that is approved by ASUS. I didn't go that route and it gave me bizzare problems caused by corrupt memory block moves (IDE read errors, etc.). Also, if you're going to do SLI, ASUS has a list of approved vidcards and I would stay with those for I have heard horror stories about SLI corruption in HL2 and other games from supposed SLI cards that are not on the list. Finally, stay away from SATA optical drives if you're going to do NForce4 raid. That's a real compatibility mess. If you don't do raid, the Plextor PX716 is brutally fast on SATA compared to IDE.

One thing for sure, when things are working this mobo is quick. With 74GB Raptors it's the fastest non-striped I/O I've ever seen. I just hope they get the BIOS straightened out (and hope the 8K RPM chipset fan doesn't die.)

--George

Rasco xtc Feb 06, 2005, 10:07am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
I have the same problem as many on this site. I used my computer with a low PSU. All worked great, halflife 2 looked really cool :> All of a sudden it didnt boot any more. Just a black screen. All the fans are spinning though. Now i bought a new PSU: ToPower 520 watts. I know this isnt enough for a sli system with 2 6800 utra's but i dont have those.

My system :

amd 3000+ boxed
6600 GT
A8n sli
512 ddr 3200 (ofcourse in B1)
westerndigital sata 80 gb hd
Nothing else is plugged in and still it doesnt boot.

Now what i understand from this site is that when the power is to low the motherboard can lock itself.
Could this be the reason why my system doesnt work yet? And if so, how do i "unlock" it??
I think i tried everything on this site including clearing cmos and removing everything, wait a day and reinstall. I hope anyone can help me, i'm so frustrated at the moment!!
Tnx

Doug Morgan Feb 06, 2005, 10:47am EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
I used the Thermaltake VM3000 skull series case for the cooling and monitoring abilities. Its screwless and I am able to change all my hardware without any problems. I put a Thermaltake W0049 power supply with just because I am running 2 6800 MSI 256 video cards and didn't want to take a chance of underpowering the system. I read the information on Asus site that recommended at least a 500 watt power supply so I went with a 680.

Crispin Ali Basah Feb 06, 2005, 03:49pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
I was building my first ever rig last night with the following specs:

Asus A8N Sli Deluxe
Athlon 64 3000+
2x 512m Kingston PC3200 on A-1 and B-1
1x 6600 gt, that EZ thing set to single display
Antec Smartpower 350-watt PSU that comes with the Solutions case
Liteon 16x DVD+RW

The problem is it never boots the bios. The green SBPOWER led is on. The CPU, graphics card, mobo and rear fans are turning. The weirdest thing is that the machine turns on without me having to press the power button. By pressing the back 1-0 power swtich, it turns on.

I thought this mobo would really rock but it turns out that there are quite a lot of problems with it. I've read the FAQ and found some guys with similar problems but all were solved. I tried resetting the CMOS but the problem is still the same. The memory sticks are in the right slots, A-1 and B-1. I've plugged the 12V atx power cable. The power switch and reset cables are in the correct positions too.

I find this site as a great one. Appreciate if someone could help me out here.

Zub Razi Feb 06, 2005, 04:10pm EST Reply - Quote - Report Abuse
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Edited: Feb 06, 2005, 04:12pm EST

 
>> Re: Asus A8N-SLI FAQ
maan i am so screwed, my system aint working!!!!!:mad:

heres my setup:

ASUS A8N SLi deluxe mobo
AMD64 3200+ 90nm
512mb Crucial RAM - 333MHz
Gainward 6800 ULTRA
120gb - 7200rpm hitachi HDD
NEC DVD +/-RW drive
Thermalright XP-120 with YS-Tech 120mm Fan
ThermalTake PurePower 420w PSU with 20-24 pin adapter.

the problem is when i try to boot up for the first time, the bios just bloody keeps beebing!!!!!, in the manual it says it would stop after about 30 seconds but i've left it on for 30 minutes and the monitor screen just stays blank!!!!

could it be the graohics card, or maybe the cpu, i've tried installing a different RAm module but still no luck!

if anyone could direct me to a possible problem, please, please, please lemme know :(

i have'nt used any of the sata sockets on the mobo. do i need to use any????

George Kisslak Feb 06, 2005, 04:39pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Crispin, dude...

350 watts?? Look in the FAQ for a power supply - yours is a SLI snack. :)

--George

Crispin Ali Basah Feb 06, 2005, 05:05pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
I found on another forum that this guy has the same 350 W psu as mine and he got his to run. I am only on a single 6600 gt. The manual mentions at least 350 W is needed. So, I am scraping the requirement.

How long does Asus usually take to process an RMA?

Sander Sassen Feb 06, 2005, 05:22pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
J L,

> One area of guidance that might be helpful is how to set up a dual PSU rig - I am considering dedicating a separate PSU for the video cards. Is this a sensible idea (and how is it best put into practice?)?

Before you go to these extremes might telling us what configuration you're running, might be a better idea than potentially damaging part of your system if you start connecting a 2nd power supply.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Sander Sassen Feb 06, 2005, 05:29pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
James,

> 1. Whats the difference between the two types

2. Why is it that a v1.3 psu works on a v2 board.

ATX v2.0 is the new spec meant for Intel PCIe socket-775 motherboards, but also adapted for AMD PCIe chipsets, hence you see it on this motherboard as well. It has two dedicated power rails for 12v, one for the CPU the other for all other devices. The reasoning behind it is that the Pentium 4 Prescott processors require quite an amount of (stable) power which is guaranteed by the dedicated power rail. The 24-pin v2.0 connector has four extra pins that supply extra power to the motherboard, but a v2.0 PSU isn't necessary if the 20-pin v1.3 PSU has a high enough power rating.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Zub Razi Feb 06, 2005, 05:32pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
can anyone help me out????

Sander Sassen Feb 06, 2005, 05:34pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Crispin, Zub,

350w or 420w generic or off-brand PSUs will not work with this motherboard, please invest in a good powersupply, you will not regret it. As mentioned in the fact there's but a handful of PSUs that are tried and tested to work with this motherboard, so we'd recommended getting one of those.

Sander Sassen
Editor in Chief - Hardware Analysis
ssassen@hardwareanalysis.com
Crispin Ali Basah Feb 06, 2005, 05:44pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Thanks for the advice, Sander. Will brows for one.

I still find it puzzling why the machine turns on when I press the power switch at the back of the PSU. Can this be caused by the PSU as well?

George Kisslak Feb 06, 2005, 05:50pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
Crispin,

Spontaneous mobo turn on might be caused by standby current not being stable enough. I would also check that the case front panel connections are going to the right places on the mobo.

--George

Rasco xtc Feb 06, 2005, 06:02pm EST Reply - Quote - Report Abuse
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>> Re: Asus A8N-SLI FAQ
My a8n sli locked after not using a good psu.
Now i have a good one (topower 530 watt) but i dont know how to unlock the bord.
Anyone know how to do this?? (clearing the cmos doesnt work)

Help me Please!!


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