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Epox 8K7A JCLK1

S

splice

Golden Member
Doh, I finally got around to reading my MoBo manual and I had forgot to set the JCLK1 to the 133MHz setting. Anyway, before I had manually set the clock to 133 in the BIOS. So, would this have effectivly overclocked the PCI bus?
 
I did the same thing and i had problems with lots of things I could not burn with my plextor I would have it would lock and no stability
 
Well it sure as hell affected my AGP.. when it was set to 100MHz I could only get 3DMark2K1 to run with 1x/2x AGP and disabled AGP fast writes in the BIOS.
 
the problem is the divisor: when you overclock to 133, it still divides by 3 as opposed to 4. When you set the jumper to 133, you insure that the PCI bus will still run at 33, as opposed to 44 (133/3). 44 is very very high for the PCI bus. Setting the jumper allows you to push past 133 with a divisor of 4: say you make it to 150, then the PCI bus is running at 37.5, way way less than the 44 before. It makes a big difference. Now if you can run the PCI bus around 45, more power, but that is almost impossible unless you aren't using any PCI cards, or have ultra expensive NIC and no sound crad, aint gonna happen! I am gonna get this board as well....
 
Also, almost no HDD is going to tolerate that ridiculous PCI speed. DATA LOSS time!!! aGP dividor = 2 usually, I don't know about that.... What did you guys get to in the end, and with what ram? I can't decide between Crucial 256MB PC2100 (CL2.5 arg) for 58 shipped or corsair 2400 at 103 shipped.... I want to hit 150 FSB, cas 2.5 or cas2. Whatcha think?
 
Splice, turn on PM so that people can actually talk to you! Or not.... what kind of ram are you using and what FSB did you get to, at what latency?
 
I went for the Crucial 2100.. 1 256MB stick, it's just too cheap to pass up right now. I paired the MoBo With an Athlon 1.33GHz... damn fine setup. I have yet to overclock.
 
Once you set that 133 jumper, overclocking should be easy. Great board too, has most options in the bios. You did change the jumper, right...? What Heatsink fan combo are you using?
 
Yeah, I changed the Jumper 🙂 hmm.. well I wasn't able to load win2K with stock settings and FSB @ 145.. backed it off to 140.. so I'm running right now at 1.4Ghz. Right now I have a AOC heatsink with a 60mm 6500RPM fan. Modded In-win s500 case with a side 120mm panaflo intake and a top 120mm panaflo blowhole.

PM is on. 😉
 
I use the exact same fan layout! One blowing on the PCI cards, CPU and general mobo, and a blowhole! Cool. Sucks to be limited at 140 FSB, but if you unlock you multiplier you can move up speed, although depending on your temps you should be happy with 1.4 I guess, but I know know know that you can do better, see renob's rig, althogh he does not indicate multiplier settings. Your ram may be limiting you of course!
 
Sweet fan layout. 🙂 Cooled my system quite a bit. ooh... well that's the best part about the 1.33's they are multiplier unlocked. 🙂 I'll have to mess around with the mult. jumpers this weekend. I also want to get a CAK-38.. maybe friday... woohoo payday this week 🙂
 
The 1.33 AYJHA or whatever are unlocked! That is really cool, but it isn't that hard I guess. Definately gonna want a better HS, I would recommend the Taisol 760092, it has a copper sole and isn't expensive, about $30, and you will want a 28CFM fan. My friend is running 42C UNDER FULL LOAD with a Duron 800 @1000, w\Vcore = 1.8, great heatsink.
 
I have a AXIA Y 1.33.
nice, I'll take a look at that Taisol, is that the stock fan you are taking about... or I should get a new one?

Looks like my current CPU temp is 48 under full load and the case is running @ ambient 25C
 
Yeah J3 that is lucky, but not impossible obviously. Really depends.... The stock fan on the Taisol isn't much, about 20CFM. Do yourself a favor and get a YSTech or sunon27CFM fan, they are usually 6-10 dollars, well worth it, because they aren't much louder, certainly nothing like a delta! If you don't mind noise, get a delta for about $10, I could sell you one if you wanted.
 
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