Abit AB9-Pro: Overclocking
FSB Overclocking Results


Abit AB9-Pro
Overclocking Testbed
Processor: Intel Core 2 Duo E6300
Dual Core, 1.86GHz, 2MB Unified Cache
1066FSB, 7x Multiplier
CPU Voltage: 1.4375V (default 1.3250V)
Cooling: Scythe Infinity Air Cooling
Power Supply: OCZ GameXStream 700W
Memory: Geil PC2-6400 800MHz Plus (2x1GB- GX22GB6400PDC)
(Micron Memory Chips)
Video Cards: 1 x MSI X1950XTX
Hard Drive: Seagate 320GB 7200RPM SATA2 16MB Buffer
Case: Cooler Master CM Stacker 830
Maximum CPU OC:
(Standard Ratio)
436x7 (4-4-4-12, 1:1, 2.3V)
3052MHz (+64%)
.

Click to enlarge

Our E6300 posted very good results when compared to our earlier overclocking test results that resulted in a maximum FSB speed of 366. However, the 7x436FSB level is the lowest of our test group today and does not match up to the promise of this board's performance. We also have an issue with our CPU requiring 1.4375V on this board to reach a stable 3.05GHz. We normally only require 1.40V in order to reach this level and noticed the board would not boot without an increase to 1.4375V although it was rock stable at this setting. Vdroop averaged around .02V to .03V during overclocking and heavy system loads. Our memory is usually very stable up to DDR2-900 at 4-3-3-10 settings but required slightly looser timings on this board. Although the overclocking results are not as high as our other boards, the ability to now run up to 436FSB in a stable manner is fine for the majority of people who want to overclock.

Memory Stress Testing

Click to enlarge

Memory stress tests look at the ability of the Abit AB9-Pro to operate at the official DDR2-800 memory frequency at the best performing memory timings our GEIL PC2-6400 can achieve on this board.

Abit AB9-Pro
Stable DDR2-800 Timings - 2 DIMMs
(2/4 slots populated - 1 Dual-Channel Bank)
Clock Speed: 800MHz
CAS Latency: 3
RAS to CAS Delay: 3
RAS Precharge: 3
RAS Cycle Time: 9
Voltage: 2.20V

The Abit AB9-Pro was very stable with 2 DDR2 modules in Dual-Channel mode at the settings of 3-3-3-9 at 2.2V with the 1.4 and above BIOS. By increasing the voltage to 2.25V we could run at 3-3-3-6 timings although there were not any real performance improvements unless we utilized MemSet to change other latency settings.

Abit AB9-Pro
Stable DDR2-800 Timings - 4 DIMMs
(4/4 slots populated - 2 Dual-Channel Bank)
Clock Speed: 800MHz
CAS Latency: 3
RAS to CAS Delay: 4
RAS Precharge: 3
RAS Cycle Time: 10
Voltage: 2.20V

We had to change our timings to 3-4-3-10 from 3-3-3-9 when installing two additional modules. We were able to keep our voltage set to 2.20V at this setting. We were able to maintain these settings up to a 7x405FSB, DDR2-810, setting with 2.30V. Our maximum overclock with four DIMMs installed was 7x418FSB, DDR2-836 4-4-3-12, with the memory set at 2.30V. Once again, we had to use BIOS 1.4 or higher in order for these settings to work.

In fact, on the first two BIOS releases this particular memory would not even boot when installed in this board. The memory itself is designed to run at 2.0V or higher depending upon the latencies selected. GEIL actually rates this memory at 2.4V for 3-4-3-8 operation at DDR2-800 although we have not required voltages above 2.2V at this setting.

Abit AB9 Pro: Board Layout and Features Asus P5B-E: Feature Set
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  • powchi - Monday, October 23, 2006 - link

    Thanks Jarred, lopri, Aikouka for the reply.
  • Kougar - Saturday, October 21, 2006 - link

    I am rather puzzled. As best I can tell from Google, my kit of Corsair TWIN2X2048-6400 does use Micron D9s...

    ... but I use a Gigabyte DS3 and even with the awful release F1 BIOS onwards have had no issues using them. Currently I have a stable OC of 501FSB for a 3.5ghz rating on the old F6 BIOS. Can you confirm if this kit of RAM uses D9's or not, because I am running the 800mhz RAM at 1ghz, 2 or 2.1v only, 5-5-5-15 timings, 24 hour dual Prime stable?? I have a kit of Corsair 6400c4 on the way, so I guess this will prove interesting either way.

    I would also like to clarify that with the hours upon hours I spent playing around with and overclocking the DS3, I only once experienced a situation where I had to use the BIOS jumper, as I had managed to lock it into a POST/rebooting cycle. Having only used a Abit IS7 before, I can say it was a major difference I quickly noticed.

    Thanks for any info, it's appreciated. And good article, by the way!
  • Gary Key - Saturday, October 21, 2006 - link

    quote:

    I am rather puzzled. As best I can tell from Google, my kit of Corsair TWIN2X2048-6400 does use Micron D9s...


    Are your 6400's the 6400 plain or 6400C4? There is a difference between the IC chips used.

    We have one set of Micron D9 1GB that work properly in this board but they cost about $650 right now and had a beta SPD. We do not have every D9 1GB module available for testing but the 14 we have tried resulted in failure. Some would do 445, some would do 465. Just about every DS3 owner I know has an issue with the recent D9 1G modules not reaching 500FSB at 1:1 in a stable manner. We even tried three different boards during testing. I was able to hit 510 with the 512MB D9 and some beta 1GB Elpedia sticks from OCZ. Gigabyte agrees with our findings and it should be solved shortly.

    We really like the DS3, it proved to be a very stable board in testing. As I stated at the end, this board has changed our opinion about Gigabyte again.

    Thanks for the comments. :)
  • John - Sunday, October 22, 2006 - link

    Gary, have you tested G.SKILL 2GB (2 x 1GB) F2-6400PHU2-2GBHZ modules on the DS3? If not please add these to your list. This is some extremely popular Micron D9 memory with favorable reviews on Newegg and our forums.
  • Kougar - Sunday, October 22, 2006 - link

    quote:

    Are your 6400's the 6400 plain or 6400C4? There is a difference between the IC chips used.


    I am currently using the basic 5-5-5-12 1.9v vanilla 6400 kit, not the 6400c3 or the 6400c4. Could you please tell me which of these uses the Micron D9s, since from what you are saying I've only found incorrect info! Thanks for fully explaining this issue with the D9's in your reply, as I did not know Anandtech had tested not one or even two but three DS3's and a whopping 14 modules! So do you know if both the "c3" and "c4" use the Micron D9s, then? I've already ordered the 6400c4 kit, so I am getting the feeling I am in for a rude surprise!

    I'm grateful to know that y'all are keeping ontop of the situation, this does go a long way to explaining the extremely large disparity in user results I've read or come across about the DS3. And I'm grateful Gigabyte is working to solve this issue, the user support and countless BIOS work from them is not something I was ever expecting... it's gone a long way to putting them on my top picks list.

    And I believe I should be thanking you for the reply. ;)
  • jonp - Saturday, October 21, 2006 - link

    -- on the second memory chart it always says "4/4 slots populated - 1 Dual-Channel Bank". If all four slots are populated with the same memory, why does it say "1" Dual-Channel Bank?
    -- I can only find the GEIL memory at one on-line merchant (via froogle or pricewatch) at $460 for 2GB. That would be $920 for 4GB! it would have been nice if you had also picked a less expensive memory that more of us could afford.
    -- ASUS making a significant change to their product and only changing the version makes it VERY hard (impossible) to on-line order the specific product desired. newegg says order and if wrong, they will exchange...but that gets expensive too... and takes at least 7 days turnaround; and no guarantee that it will be the right one even then.

    thanks for the article...it was, as always, full of useful data and observations.
  • Gary Key - Saturday, October 21, 2006 - link

    1. The charts have been corrected. I stated this above but Jarred and I were editing at the same time on some pages and we did an overwrite on each other's corrections a couple of times. We learned our lesson after the Biostar section turned into the ASUS section. ;-)

    2. When we started this article the GEIL and G.Skill PC2-6400 that we used was in the $269~$289 range for a 2GB kit. This was far below the $500+ prices that our OCZ and Corsair memory modules had reached at that time. I am trying to create a memory table at this time as the boards were tested with everything from A-Data DDR2-533 to OCZ PC2-8000VX2. Our intentions were to use mid-range PC2-6400 memory when we started but it appears we chose some memory that is in very high demand and short supply now.

    3. As I stated in the article, ASUS will probably call the 1.02G board something else. The 1.01G board is not a slacker. :)

    Thank you for the comments, we appreciate them.
  • Aikouka - Saturday, October 21, 2006 - link

    After going through about 4 or so of the motherboards and looking at their windows programs... I just gotta rant.

    Why in God's name must motherboard manufacturers make their programs SO UGLY? I'm no Martha Stewart, but even I can see that those programs are attrocious to look at and I actually don't install those cheesy programs because of how horrible they look. I prefer a normal streamlined windows look to my programs, hence why I use the Windows Classic theme. But even if your preference isn't a normal streamlined windows look, I don't see how anyone could find those horrid looking things called applications desirable.
  • Nakazato - Saturday, October 21, 2006 - link

    it's Taiwanese tradition. For the people above... the S3 does not overclock as well as the DS3, it's very noticable. The DQ6 is in theory better than the DS3, but may hardly be noticable and when it is, it's probably just luck of the draw.

    My only criticism of the review is that only one memory module type was used and that I know other reviews on AT have included some other comparisons... but your review is more recent with more of the facts in(so more relevant). I know you had some references in the article and I know that the Micron chips are the best on average, but on occasion some chips perform better on a per board basis and not just on a per chipset basis.

    Review does get 2 thumbs up from me though. The extra side information(EAX2 Support of onboard sound drivers, Micron D9 chips not fully supported, but will be, etc) helps make buying decisions. Thanks for the article!
  • Aikouka - Sunday, October 22, 2006 - link

    Gah, how can such an ugly thing be tradition. It honestly detracts from the overall computing experience having something so tastelessly crafted. I guess to each his own :/

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