AOpen AK89 Max: From Ugly Duckling to Swan
by Wesley Fink on April 21, 2004 4:16 PM EST- Posted in
- Motherboards
AOpen AK89 Max: Extreme Overclocking 2
While it is normally better to have the FSB adjustments in the BIOS, there are other methods available to get beyond the FSB limit. The AK89 Max is capable of much more than the 250 FSB available in the BIOS, so we used a free windows-based utility called Clock Gen from www.cpuid.com to reach higher FSB. There is a version available for nForce3-150 chipsets.
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Using DDR533 (PC4200) memory, we were able to run the memory at DDR533 and the AK89 Max at 266x8.5. Another way of saying this is the memory is at 1:1 ratio at 266. Once you reach 250 or so, you normally need to lower the HyperTransport frequency to achieve higher overclocks. At 266, HT is set at 2.5 instead of the standard 3.
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The same memory achieved DDR550 at 275x7.5. DDR550 is the fastest memory that we have tested from Corsair and OCZ. However, there are some DDR566 modules that have been recently announced.
Above a FSB Setting of 275, we were interested in seeing just how high we could take the FSB on the AK89 Max.
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We easily achieved 300x7 and could probably have gone higher at the 7 multiplier, since our CPU is now known to be capable of 2.3GHz operation. Above about 275, we needed to lower HT to 2x to continue raising the overclock. 2x worked all the way to the highest setting that we could achieve. If you will note the memory settings, you will see we are also using asynchronous settings for the memory at a 300FSB setting. We do not yet have a memory capable of DDR600 operation.
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The highest setting we could reach that was CPU limited was 345x6.5, or about 2.3GHz. CPU limited means that the resultant frequency is known to be close to the maximum stable frequency supported by that CPU. We did reach an even higher FSB setting, which gave us the maximum FSB that could be achieved on the AK89 Max, given the available vCore options.
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We were able to reach an amazing 347FSB setting with Clock Gen and the settings on the AK89 Max. This is so far above the current 250FSB setting that we begged AOpen to increase the FSB range on the AK89 Max. AOpen says that they will incorporate a wider range in their nForce3-250 version of this board, but you should not expect a revised BIOS with wider FSB adjustments on the AK89 Max. For now, these overclocks are achievable with the 1.06M or later BIOS and the Clock Gen utility. Please note that the shipping version of the AK89 Max we tested had a BIOS that would not even work with Clock Gen. However, AOpen tweaked the BIOS to work effectively with Clock Gen beginning with BIOS Version 1.06L.
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retrospooty - Friday, April 23, 2004 - link
Am I the only one that found this artcle hard to follow ? Its all over the place ... What the hell was being tested ?cowdog - Thursday, April 22, 2004 - link
Thanks for the information.BTW, I finally did get through to AOpen, and they have been very prompt and helpful. I must have fallen through the cracks or something earlier.
Wesley Fink - Thursday, April 22, 2004 - link
Cowdog -I used our standard Mushkin/OCZ 3500 at default speed. Above 233, I used OCZ 3500EB to DDR500, and OCZ 4200EL to DDR550. if you look closely at the screen shots the memory is identified on the overclocks. As you state, BH6 can't reach these levels.
AOpen tells us the board would require a revision to allow an increase in vcore, and with the nF3-250 near, a new rev will not appear with the 150. They can't modify the vCore on this board with just a BIOS update. vdimm and higher FSB may be a possibility - we have requested those changes - but it is more likely these will come with the 250 version.
cowdog - Thursday, April 22, 2004 - link
FYI: This seemed as good a place to post this as anywhere else. Just came across a new bios, 1.07"For AMD recommended,memory clock will set to DDR333 when DIMM1 and DIMM2 plugged double side DDR400 memory."
Two things:
1. BIOS defaulted to 200x11 for me, which isn't a good thing for an A64 3200
2. I have no option for DDR400 in the bios with 2x246MB Mushkin Lv II PC3500.
3. When I tried to lower the multipler, the bios gave me an error at POST (safe mode or something like that). Then even if I selected bios defaults I had the same message. I reset cmos and it worked, although cpu frequency went back to the 200x11.
Might want to be leary of bios 1.07, although my system may simply be whacked.
cowdog - Thursday, April 22, 2004 - link
Wesley, I must admit that I haven't tried Dr. AOpen; I missed that. I did fill out their tech support form (with serial number, etc.) three times. This third time (last night) I did receive an automated reply for the first time. I kept screen shots of the previous forms, and I know my email was right. I'm not sure what happened. Anyway, I'll try Dr. AOpen as well, thanks.Couple of things to add:
1. As far back as the official 1.06 bios, I was able to change multiplers (only downward, of course) using Clockgen. I found that clockgen would work if I set the multiplier lower in the bios, even though that did not change the multiplier at post. 1.06 m bios now changes the multiplier at post, as you note. Funny thing too, after I updated to 1.06m, the default multipler was 4.
2. I don't understand why AOpen won't open up the cpu and dimm voltages as they did with the AK86-L. As you note, the AK89 Max is their current A64 flagship. Why add features via bios update to the AK86-L but not do similar for the AK89 Max? Unless, of course, those features can't be added with a bios update. Do you know?
3. When you overlclocked the memory 1:1 to 250Mhz, were you using the OCZ or Mushkin memory that you referenced earlier in the article? I am unable run some Mushkin BH-5 memory 1:1 at anything higher than 230Mhz (clockgen) and 210Mhz (bios) with the multiplier way down and LDT at 3 or 2.5 even though I can run the same memory at speeds higher than 250Mz on another board. Same thing with some Corsair LL v.1.1 memory. Just curious. Perhaps the cpu is the limiting factor; is there that much variability?
Anyway, thanks for a really nice and thorough review. I am trying very hard to like this board (and AOpen) and your review renewed my motivation.
Wesley Fink - Wednesday, April 21, 2004 - link
#7 - The Asus K8V is based on the VIA K8T800 chipset which has no capability at all for a PCI/AGP lock. We have found the performance of the VIA and nForce3-150 to be about the same at stock speed, but the VIA is simply not cpable of avchieving the overclocks we have reported in this review.The K8V performs about like the MSI K8V Neo which is included in our benchmarks.
Modal - Wednesday, April 21, 2004 - link
I wish you would have done some comparisons with the ASUS K8V Deluxe as well, as this seems to be quite a popular board for Athlon64 machines (plus, I'm thinking about using it for my next build...). Oh well...Wesley Fink - Wednesday, April 21, 2004 - link
#5 - Have you tried Dr. AOpen on line? If nothing has worked please email me your details and I will forward your email to contacts at AOpen.Both Evan Lieb and I have had very positive Support expereinces with AOpen. If others are getting different treatment it is important to know that and report it in our reviews.
gimpsoft - Wednesday, April 21, 2004 - link
is this a Real AGP /PCI lock ???i heard there way to mod the bios to lock but not the same as hardware Agp/pci locks
well something like a sofmod ill see if i can find the link
may be a this must buy board i got a via KT800
i can do 3000+ 10 X 250= 2500MHZ but my radeon 9800pro & audigy bitch they say to high =) PCI: 41 APG: 83
bigtoe33 - Wednesday, April 21, 2004 - link
2-I was quite impressed by te FSB's the AOpen was able to hit and did feel the review was there just to show what the board is capable of.I also have this board and i would say 1:1 will be pretty limited due to 2.8V vdimm max.
Also it was nice to see a comparison of 3dmark although i know this is not a bench Wes uses.
Overall i think the review showed the board has awesome potential and proved that boards can become awesome with a "tuned" bios ;-)