A8N32-SLI x2 4800 overclocking HELP

[krips]

OC Guide
PLease don't hyjack threads. If this link doesn't answer your question then start a tread .

[S1W]

I have been looking for the same thing as you.... since January. I managed to get my setup to 2.71Ghz stable with just voltage increase & locking ram at 400. This is my first AMD PC & probably the PC i have ever built. The problem on my end is that ..people post their results & very little detail on how they got there. Most articles on overclcoking the x2 4800 use a diff. motherboard...so the bios does not have the same options as my board. I've tried to find the settings other people use on other boards in the a8n32 bios but I still have not found all of them yet.

I will post the settings I used to reach 2.71 Ghz with corsaire 3500LL ram once I get home from work. but I basically locked the Ram at 400 & boosted the ram voltage to 2.8v & cpu to 1.5v. the rest is at default settings.

[LostBok]

You need to set your HTT multiplier lower - to 3x or 4x (whatever keeps the HTL between 750 and 1000Mhz.

If you want to overclock on the ASUS boards, you need to set your RAM settings to a lower speed (in the options box where your options are 266Mhz, 333Mhz, 400Mhz, 466Mhz, 500Mhz, 550Mhz, et al) - this isn;t actually a specific memory speed - it is just the ration between the RMA and the HTT speed - thus, once you're finished, you won't actually have reduced your RAM speed. See the example.

e.g. lets say that I have a 2Ghz CPU (10x200Mhz CPU) and DDR500 memory. The "correct" approach would be to set the memory speed to "500Mhz" in the BIOS, it will run at 500Mhz and the CPU will run at 2000Mhz.

The overclockers approch would be to reduce the RAM speed to "400Mhz" in the BIOS, it will initially run at 400Mhz, and also reduce the HTT mulitplier to 4x (so the HTL speed comes down from 1000Mhz to 800Mhz). These two steps will then give you the head-room to SLOWLY increase the HTT speed from 200Mhz upwards. I would try 5Mhz at a time, just so you have some idea that it is all working between each step up.

I'm trying to stick to nice round numbers, so lets say that I manage to overclock the HTT to 250Mhz, the HTL would now be at 4x250Mhz, so back up to 1000Mhz, the memory would be "overclocked" from 400Mhz to 500Mhz and the CPU will have moved up to 10x 250Mhz (2.5Ghz).

Obviously you are more likely to have PC3200 (DDR400), so you RAM setting would have to move down to 333Mhz... a friend has his CPU overclocked, but is running el-cheapo PC2700 (DDR333) - so his overclocking settings are for 266Mhz RAM and then he overclocks the HTT up until the RAM is back up to 333Mhz (obviously with the HTT multiplier recuded to keep the HTL below 1Ghz).

The beauty of this overclock is that you're never running the Hypertransport (HTL) or RAM out of spec, so there's no instability from those components and no chance of burning them out.

The only parts you are straining are the HTT clock (should be fine to around 300Mhz, WITHOUT any voltage changes - will give you a 50% overclock if you keep the stock CPU multiplier) and the only component you are really pushing is the CPU - just keep an eye on heat!!

[LostBok]

Sorry, been off the forums recently!

Nothing special to OC - just make the changes in the BIOS and reboot each time, I've found AiBooster fairly unstable recently (even on clock-downs at or around the default speeds).

Only thing you need is good CPU cooler and airflow in and out of the box and a sensible ambient temp - my OC's below are not possible in 30C+ temps we've been having in London recently, but with ambient temps in the low to mid 20's, this is what is possible.

Here's the stock voltage OC:



and the peak stable OC:



"idle" temp was around 38C, but the "FSB" (HTL) measurement on AiBooster stays on "4x", so was actually reading nearly 1200Mhz when it was actually at 3x and around 900Mhz.

Until the weather cools down, I've actually clocked mine back to 2250Mhz, 9x multiplier, 250Mhz HTT, 4x 250Mhz HTL, RAM at "400" (i.e. 1:1 with the HTT), so with the HTT up tot 250Mhz, the RAM is at 500Mhz.

BUT even with the downclock, I still have still had to push the voltage up to around 1.4v and the CPU idle temp is still around 40C!

[Tripleohno]

x2 4000, a8n32xsli asus mobo,artic freezer 64pro,xms pro dd440 ( has lights on it),8800gts 640 sc evga....
cpu @2.62,ram@ddr500,gpu @630,950 temps on core's idel 37-39 thats with 3 vantec tornado's on hlaf speed (with vantec fan controler

[Tripleohno]

[img=http://img28.picoodle.com/img/img28/8/7/3/t_oc8m_5d8b754.jpg]

sorry for double post new at tryin to post pics, hope this works like the guy above me..

[LostBok]

Tripleohno... not sure why your pic didn't work:



I've reposted your link in the style that happens with you use the little IMG button when you're posting... "["img"]" URL and then end with "["/img"]"

obviously removing all the quotes....

or just click the little IMG button, paste your URL and then hit IMg again

[LostBok]

SOLO - that's a pretty vague question....

it's normally just a case of choosing the components carefully and then tweaking settings, usually in the BIOS, sometimes there's jumpers on teh motherboard.... but make sure you know what you're doing first, otherwise you'll just blow stuff up!

looking at yr spec - looks like youre' running a mid-early spec Athlon XP system, probably a Palomino core (I had a 1900+, 1.6Ghz, so there's not going to be much room in overclocking.... I think I only ever got that 1900+ up to 2000+ speeds and that was the highest most of the Palomino's went...

After that I had a Barton 2500+, which was a GREAT overclocker... I ran that 24/7 at 3000+ and 3200+ speeds for about 4 years.... it'd run 3000+ on standard voltage (less risk of overheating), so I'd advise trying to get hold of an old Athlon XP CPU somewhere that will OC better...

[Tripleohno]

i have gotten this core to run at 3.0 mark for both cores. i have also lowered the voltage from when this pic was taken.. i feel that chips have a break in period. but now runs in windows at under 1.40 just ask and u shall get a pic of the updated one.

[-RYknow]

hmmm, lets see a screen shot of Prime, or Orthos after 24 hours.

My Opty 170 will boot into windows, and run fine at 3.0. But do anything hardcore with it...and she crashes.

-RYknow.