Do I have a AGOIA F dud?

[Hankysmoo]

My AGOIA F that I just got from newegg seems to be a dud =( I've been having headaches with my new computer all day long!! =( I have an Epox 8k3ae with the 1/6 divider and I can't get the chip to run properly at 166 at default voltage. The highest I got it was about 160. In order for the chip to work at 166 I had to boost the voltage to 1.8 but it would fail immediately in prime95. Anyone know what the problem is? I'm using arctic silver, I have the SVC Golden Gate 40 (up to XP2100+), and I also have 512mb samsung pc2700 that I got from komaxx. This is all in an enlight 7250 with 300W psu. I thought this computer was gonna be a cinch to overclock but guess not...What do you guys think is holding me back? Oh ya, the clip is too big on the heatsink so I have to use the second or third dimm slot, would that hold me back any?

I also have the newest bios for the 8k3ae 8/27

 

[Hobbes28]

If you have the option try a bigger power supply (higher combined rating on the +3.3v and +5v lines, not necessarily more WATTS total, i.e. some 350w PS have a lower rating than some 300w units). I replaced my Antec 303P 300w PS (+3.3v and +5v =150w combined) that was running a Shuttle AK31v3 and an AMD 1700+ XP @ 1518 MHz (11x138) stable to an Enermax EP465 (+3.3v and +5v = 220w(?) combined) and now it runs @ 1650 MHz (11x150) stable with everything else being the same. Most people seem to be getting pretty good results with AGOIA "F".

Just a thought.

Later...

 

[dexvx]

So you're saying the 12V line on the POwer supply isnt as important as the 5V/3V when it comes to overclocking the CPU?

Whats a good Amp rating for the 5V/3V?

 

[Hobbes28]

I'd say around 30A +/- on the +3.3V and around 35 - 40A on the +5V lines would be a good start. You may may be able to get by with less. The +12V is still important but I don't think it has as much impact on overclocking as the combined wattage as the +3.3V and +5V. This is just what I have found, I'm sure others may have a different opinion based on their setups.

I'm not sure what your budget is but I did a little searching for you and for the money, this Antec 350W Power Supply would be a good start - $54.00 shipped, Dual fan cooled, 230W combined on the +3.3V (28A) +5V (35A) lines. Not bad stats for a 350W PS. Or you could splurge for the Enermax, both available at Newegg.com.

Later...

Edit: I can't get the link to point to the PS. Just go to Newegg.com, search for Antec P4 ATX12V 350 Watt Power Supply With 2 Fans - Retail SL350.

 

[dexvx]

I'd say around 30A +/- on the +3.3V and around 35 - 40A on the +5V lines would be a good start. You may may be able to get by with less. The +12V is still important but I don't think it has as much impact on overclocking as the combined wattage as the +3.3V and +5V. This is just what I have found, I'm sure others may have a different opinion based on their setups.

30A on the 3V and 40A on the 5V?? Thats like 290W combined. I have an Enlight 250W power supply and I really dont feel like replacing it. I believe the 3 and 5 combined is slightly less than 200W.

 

[Hobbes28]

The original poster asked "What do you guys think is holding me back?" They asked for an opinion and they got mine, the numbers I gave were guesstimates but my point being I think he/she needs more than what they are getting from their power supply. Like I said, I went from a 300W Antec to a 450W Enermax and my OC problems went away. I really wasn't wanting to replace my Antec but if I wanted more from the CPU it was the only choice for me.

Later...

 

[randomboy]

Yeah, I'd say try the larger PSU as well. I have the 431w Enermax Whisper, and just the other day I dropped in an AGOIA 1500+, cranked the fsb up to 166mhz, and been running happy ever since I'm jealous of you, I wish my damn Asus a7v333 had a 1/6 divider too

Jef

 

[Technonut]

I have an Epox 8k3ae with the 1/6 divider

I was not aware that the KT333 had a 1/6 divider. Hell, even the KT400 does not. Out of curiosity, can you see and set the 1/6 divider in the BIOS?

 

[CubicZirconia]

Originally posted by: Technonut

I have an Epox 8k3ae with the 1/6 divider

I was not aware that the KT333 had a 1/6 divider. Hell, even the KT400 does not. Out of curiosity, can you see and set the 1/6 divider in the BIOS?

I believe it actually has a 1/5 divider. 166/5 = 33.2

 

[yodayoda]

the divider is not a component of the chipset (north or southbridge)--it actually is determined by the clock generator (usually a Realtek chip). a common Realtek chip, the RTM560-266R actually supports 1/5, 1/6 and even 1/7 dividers, but the motherboard maker has to implement and support the feature. here is a good description of the clock generator: http://www.vr-zone.com/reviews/ABIT/KX7-333R/page2.htm. so go yell at Abit/Asus/MSI/etc and not Via for your lack of a 1/6 divider =)

 

[Technonut]

Even though the clock generator supports the divider, the function must be enabled in the Northbridge. For example... The KT400. ABIT originally advertised support for a 1/6 divider in the AT7 Max2. ABIT removed the setting from the BIOS when they found that the KT400 NB did not support it.

1/6 divider is removed in new bios , AT7 Max2 Clock Gen does support 1/6 PCI Divider , however VIA has confirmed that KT400 does not support 1/6 PCI divider even the clock gen can support 1/6 PCI divider , this is the chipset limitation and can not be solved by motherboard maker

EDIT:
Link

 

[metroplex]

I knew I bought an Enermax 550W psu for a reason

 

[Allen7]

I got a AGOIA "F" chip from Newegg too, it wont go pass 140MHz I am using MSI KT3-Ultra

 

[DAPUNISHER]

Not populating the Dimm slots in order could indeed be causing some issues with the overclock, also try bumping the Vcore up to 1.85v or even 1.9v as the XP can handle that kind of juice if properly cooled. Which brings us to your temps, what is the temp@166FSB using the golden gate@1.8v? I suspect that just pumping the Vcore to as high as 1.9v will stabilize your system@166fsb but you might want to pump the Vdimm up to 2.6-2.7v as well.