Bitte sagen Sie mir, was getan werden kann, um einen höheren Bus zu erreichen.
That is very little information for your rather broad question, so let's try to set a stage for this...
The maximum achievable bus frequency depends on several factors. Obviously the first thing is the chipset which comes in different qualities depending on where on the wafer the chip was located during production. Same goes for the CPU, they also come in wide variations of quality depending on the wafer location which can be identified by the stepping. Since it's a Barton core, there are four major stepping categories:
I = best quality, high potential
A = second best quality, average to high potential
K = mediocre quality, at best average, usually below that
P = worst quality, it runs at what it is spec'd for, don't expect more
Have a look at the last line on the black label on your CPU and tell us what it reads. It should be something in the format of "AQYHA 0349 XPMW" for example. Really important is also the production date, which in the previous example is "0349", so the 49th week of 2003. It's important because it tells is wether your CPU is superlocked or the multiplier can be changed which is really helpful for further testing because as it is right now, you have three problems at once:
1.) You don't know what speed your chipset can run at
2.) You don't know what speed your CPU can run at
3.) You don't know what speed your RAM can run at
So when you say your system doesn't work at speeds above FSB217 you don't really know what causes this problem because it could be any of the three listed or a mix of things.
At 217MHz FSB, your CPU (if it's locked at multiplier 11) it would run with 217x11 = 2387 MHz. Now, just because you are throwing 1.95 volts at it (which is rather high already) doesn't mean it has to be stable at that speed because as I said, there are different qualities. Each CPU at some point runs into a "wall" where it just won't scale up in speed anymore with more voltage applied or just won't be stable anymore no matter how high you set the voltage. I've had CPUs of really bad quality which didn't even make 2.3GHz stable at a reasonable voltage and then again others which do 2.5GHz at default voltage of 1.65V easily.
My point is, if you don't know you CPUs limit, you can't cross out the CPU in testing and if your system fails at 217MHz it could be the CPU, it could be the board or it could be the RAM.
Speaking of which... What RAM are you using and what speed is it rated for at the given timings? Like do you have BH5, TCCD, CE5, D43...? If you are overclocking be sure to check your memory speed dividers. Ideally they should be 1:1 because only then you really get a performance boost out of it but it also means that your ram needs to be tested to run at that speed. 217MHz FSB would result in DDR433 so you need to check if your RAM can do it and what timings it runs at because you might have to lower them from maybe 2-2-2-5 to 2.5-4-3-7 to allow the RAM to run at higher speeds and / or even increase VDimm if needed.
Let's get back to the CPU once more. So what I would do is I'd check if you can lower the multiplier to like 6 or 8 for example and see if the frequency changes accordingly or if the system simply fails to boot then. If it does work and you can change the multiplier, try to max out the cpu first so you know what clock it can run at. Start at default voltage (1.65V) and set it to 11x200 (2200MHz / 3200+), put it through Prime95 and 3DMark2001 to test it every time you change the clock speed. If it does 11x200 @ 1.65V, change it to 11,5x200 @1.65V (2300MHz) and run the same tests again. You do that for every step until at one point a test fails. You then head back to the BIOS and increase VCore by +0,025V and check again, does it run through @ 1.675V? If not, rinse and repeat with 1.700V, then 1.725V until it's stable again. However, if you realize that even two or three voltage steps of +0,025V don't make any difference and the system still fails, you're facing the beginning of that earlier said "wall" and each increase in frequency will call for even more voltage, making it not worthwhile to proceed beyond a certain speed. If it's a crooked CPU with a locked multiplier and it just doesn't like high speeds at all, there's nothing you could do now other than buy a new CPU with a better stepping. If it can't make high speeds, you won't get high bus speeds because they are tied together with locked CPUs.
Anyway, if you then know that your CPU for example does 2.5GHz @ 1.775V stable you now know, that when the system fails with FSB217, it's most likely not the CPU which is causing an issue here. Of course there are CPUs which don't like high FSBs but 217 is nothing I'd consider high by any means. That narrows our search down to the two remaining items, so let's talk about RAM again.
Let's say your system fails at 217MHz and the RAM runs with the 1:1 FSB
RAM ratio with timings of 2,5-3-3-7. First thing to do now is try to relax the timings as much as possible, so for example set them to 3-4-4-11 and try again. If your system boots now, you have an indicator that tells you that you either need more voltage on the RAM to run them at 2,5-3-3-7 with anything above FSB217 or if you don't want to increase the voltage, you need to relax the timings. Anyway it tells you that the problem would most likely have been the RAM if you can cross out the CPU already which is tested to 2.5GHz in this example. If relaxing the timings and increasing VDimm don't give you a single MHz more bus frequency, we should look at the mainboard now.
There are two main reasons for a board not overclocking as you'd like it to.
1.) The BIOS limits the overclocking by having too tight internal timings on the memory controller and all that communication going on
2.) The board design isn't made for massive overclocking / caps are degraded
...or of course... a combination of both.
If it's only the first, there's hope. Our regarded users
@digitalbath and
@Tzk do have a brilliant understanding of how to modify BIOSes and have shown great competence in creating special BIOS versions adapted to all the testing and investigating the NF2 chipset quirks over the last 2-3 years. They actually made such big leaps in BIOS modding that now almost every NF2 board can be brought to FSB250+ – even the crappy ones you would have never expected to be able to achieve such speeds.
So, if your CPU does higher speeds and your RAM doesn't cause any trouble as well, it might just be the BIOS that is not optimized for overclocking thus limiting your maximum achievable bus speed. But always remember, make sure to cross out all other components before that or you simply can't tell what is causing issues here and you'd be fishing in muddy waters. Also if everything else checks out try to increase the chipset voltage a bit if your BIOS offers that option, like +0,1V and see if that changes anything.
Last but not least, there are two more things that could limit your success.
1.) Degenerated capacitors
2.) Overall insufficient design for overclocking
So first of all, take a good look all your capacitors on the mainboard and check for any bulging or leaning massively to one side, pushed out rubber bottoms, obvious leaks underneath or on top and everything that visually counts towards a possible defect. Why I'm saying that is that many old mainboards, ESPECIALLY Epox mainboards usually do have several bad capacitors on it either bulging heavily or already spitting electrolyte. In either case those caps then don't do what they're supposed to do anymore which is filtering, buffering and flattening power supplied to specific components which can cause stability issues or even burned out hardware when a catastrophic failure occurs. Since overclocking introduces – spoken in a simple way – more noise / stress to all the affected capacitors, that might just push them over the edge to either total failure or unsatisfying behavior in general, causing aforementioned issues like instability and the like.
One other thing you have to keep in mind is how your board is designed. With the 8RDA3I they clearly didn't have the enthusiasts on their radar since afaik this board only comes with a two phase VRM layout. That is fine for the average midrange board not for being heavily beaten for the last MHz because when it really counts, you'd want at least a three phase design for better and more stable power supply for the CPU. Since I've read that you applied 1.95V to the CPU and given the fact that this is not an enthusiast mainboard, you might have already pushed it into an overcurrent protection or some other intended failsafe mechanism. Speaking of which, how did you cool your CPU while it was seeing 1.95V? Please try to start low as already described above because 11x217 is by no means a frequency that justifies such a high VCore.
As you can see there are quite a few things to check and cover and we need a lot more information from your side to specifically address certain issues at hand because this vague question of yours can only be vaguely answered like I did with considering a few of the most important factors but nothing in great detail until we know exactly what we're looking at, what your approach so far was and what hardware specifically you're using as well as the condition it is in.
Hopefully that got you an idea on how to proceed and provide additional details for further assessment or help by other users.
