P3 700E overclock help!!

[Irondog]

With my P3V4X I can only reach a stable FSB=115 & an instable FSB=120... what can I do to reach a stable FSB=133? Do I have to change my Power Supply @230W to a more powerfull @300W? thanks

[win98nogood]

what ram are you using and cooling
Intel Pentium III 700e @ 1000 mhz 1.8 v, Alpha P125 with Dual Delta 38's , 128mb Infenion pc 133 ram @ 140 fsb with no problems extremely stable never had a problem since day 1

[Irondog]

My ram runs at 153 CAS3 stable (I've used also a multiplier of 2/3) and I'm using a CooperMaster UltraHigh Speed to cool, but I thing that the cooling shoudn't be a problem... any idea?

[win98nogood]

what are your ram settings I have mine at 3,2,2 give that a shot and bump your voltage to 1.8

[jmsandrsn]

Have you just tried running it at 133 FSB. May want to give it a shot if you have not. It's possible that your PCI components don't like 120 MHZ with a 1/3 divider.

[Irondog]

Yes I know, but I've tryed to run @120 without my internal modem, leaving only a SBLIVE! & myGeForce256 DDR... I thing the SB should have no problems...

[DocClock aka MadClocker]

I know this sounds silly, but mine did not like 157fsb, but is happily running @ 158fsb, so I would suggest trying 121fsb, or 119, if those options are available, and 1.9v seems to be the trick to go past 900mhz with the cBo 600e & 700e

[Irondog]

...but are there any problems to run th CPU @ 1.9v? isn't too much?

[Howard]

Irondog (Jan 10, 2001 10:55 a.m.):
...but are there any problems to run th CPU @ 1.9v? isn't too much?


You haven't told us what your current temps are at 1.8V.......idle and at load.

PIII 700@1030 w/alpha, Abit BE6 II

[Irondog]

at 1,8v I've a 50°C after a 2/3 hours of UT...

[Howard]

Irondog on the contrary your temps are too high even at full load. My temps at full load NEVER exceed 40C. If you haven't applied any thermal compund to your heatsink I would highly recommend it, however if you want to see what your CPU can do your going to have to invest 30-50 bucks in a quality heat/fan combo. Most will recommend an Alpha or Global Win. I would make your cooling problem your first priority, then maybe the other problems just might go away....:))

PIII700@1030 w/alpha, Abit BE6 II

[Howard]

Irondog i forgot one thing.......sorry....:))) Until you get your cooling problem resolved don't kick up your voltage any higher. You may also want to consider on a temporary basis removing the side of your case, and while gaming blow a small house fan into your case to cool your system down. What kind of case cooling do you have any way?

[Pineapple]

If you are worried about temps, just get a peltier. simple installation, no maintenance, and increases the life of your cpu. My temps at idle in Win2k are -15 C (yes, negative, and no incorrect temp readings), and 34 C under full load of Prime 95 (Its possible my 55watt peltier is not strong enough to keep the full load temps proportionally cooler to its idle temps). I highly recommend peltiers. much easier than water cooling, no big toobs of water running through the case (dont you get scared of those things leaking all over and destroying the entire computer?). Anyways, the only problem with peltiers is that they produce condensation, however damage from the condensation can easly be prevented with a small amount of electronic grade silicone. I read all the guides of how to apply it, but it still did not prevent the on die cache of the cpu to corrode from the condensation. So I cleaned the die of corrosion, and sealed it with the silicone, and now nothing can go wrong from the condensation. So if any of you guys already use peltiers, I suggest you do the same, or at least check the bottom of your cpu (where the cache is) for corrosion.

[jr]

Pelts are dangerous water cooling is the way to go.

[Irondog]

mmm... what about the peltier? how much does it cost? I've heard that if you buy one of them you spend a lot of money and it's cheaper to buy a more powerful cpu... (you cpu + peltier cost > a new cpu)

[Pineapple]

Irondog (Jan 12, 2001 02:25 a.m.):
mmm... what about the peltier? how much does it cost? I've heard that if you buy one of them you spend a lot of money and it's cheaper to buy a more powerful cpu... (you cpu + peltier cost > a new cpu)

Peltier is $16, gets my P3 700 up to 980. since it keeps the cpu cold, it should make it last longer, and run more efficiently (unless its being overclocked too high). Without the peltier, i could barely get 933 stable, and that was with 1.85 volts. I can now overclock 47 mhz more, and drop the voltage 0.15 volts, and increase the fsb from 133 to 140, which greatly increases the performance of my video card and ram. So its not just a peltier for an extra 47 mhz, it also allows my ram, and fsb to increase by a large amount which effects all the components. My P3 700 at 980 kicks the sh*t out of any P3 1Ghz that is running at normal fsb simply due to my 140 fsb. I know some people are running at even higher fsb speeds, but they are probably sacrificing ram latency in doing so. Its best to overclock as high as possible at a CAS latency of 2,2,2 than increasing the latency to 3,3,3 to get an extra few mhz when overclocking.

[Irondog]

WOW! It's great! Where have you bought your Peltier?

[jr]

Peltiers are dangerous and even with extreme caution condensation will do you in. I know I've had it happen. Watercooling is a much safer approach to keeping you cpu cool My 700e @1120 loves it. If you are seriously considering a peltier it will require a lot of research. You will have power supply problems, insulation problems, and all other sorts of issues. I was just saying it is not as easy as this guy makes it out to be . Good Luck with your project. Also a peltier running off a regular heatsink will be dumping all kind of heat in your case. Hope you have good case cooling also.

[Irondog]

Ok, thanks for your suggestions!!! I'll keep them seriously..

[Pineapple]

jr (Jan 12, 2001 02:06 p.m.):
Peltiers are dangerous and even with extreme caution condensation will do you in. I know I've had it happen. Watercooling is a much safer approach to keeping you cpu cool My 700e @1120 loves it. If you are seriously considering a peltier it will require a lot of research. You will have power supply problems, insulation problems, and all other sorts of issues. I was just saying it is not as easy as this guy makes it out to be . Good Luck with your project. Also a peltier running off a regular heatsink will be dumping all kind of heat in your case. Hope you have good case cooling also.

Well jr, I am sorry if your peltier experience was not as good as mine, but that does not mean you have to discourage the use of them. I agree, if your power supply is weak, you will have problems. My Enermax 430watt Whisper Power Supply does the job just fine. I would not recommend using a power supply under 300watts unless you plan on using a seperate power supply for the peltier. Thats for a 55watt peltier, a more powerful peltier will probably require a seperate PSU just for it. Condensation is not a problem at all if you take a little extra time to seal the necessary parts with silicone. Only certain parts are subject to condensation, just both sides of the processor in my experience. If you seal the exposed metal areas on the underside of the cpu, and fill in that entire space in the center of the socket 370 connector on the motherboard, let it dry for 4-6 hours, you wont ever have to do any maintenance or clean up any condensation (since the heat from the cpu under full load causes the condensation to evaporate).

As for watercooling, I wont say anything about it since i have no experience with it, however, i know that much more can go wrong with watercooling, such as air in the pipes which can either slow down the flow of water, or compeltely stop the flow all together. Over time, if the pipes corrode, or something loosens over time, you got a major problem with leaking water (or whatever coolent you are using) and damaged parts. With a peltier, if it malfunctions for some unlikely reason, the most damage it can do (when properly sealed with silicone)is fry your cpu. As for water cooling, its very possible that the water from a leak could cause some devastating electrical malfunction inside the case potentially ruining all parts in the computer. Now don't tell me water cooling is safer, it most certainly isn't.

[dalva]

My Setup:

Mobo P3V4X (Artic Silver Thermal Adhesive and heatsink on "clock chip generator" to achieve a stable high FSB. PC133 CAS 3 RAM
PIII700@994Mhz (Stable: 3dgames, Apps, SiSoft Sandra, and 3dmark2000 benchmarks)

142Mhz FSB, 142Mhz RAM (CAS 3).

Using AlphaPEP66T with Artic Silver Compound to cool down my CPU.

Temps:

28C/82F - Mobo Temp
34C/93F - CPU Idle Temp
37C/99F - CPU Full Load Temp (running benches, apps, games, etc.)

I don't anything about Water Cooling or Petliers, but I can tell you this... with a good heatsink/fan, compound and 2 case fans you can achieve very high overclocks without resorting to sometimes costly methods.

Just my 2cents..

[dalva]

Missed info on initial post.. sorry.

My voltage is set to 1.85v on my PIII700@994Mhz.

[jr]

Your right Pineapple. Im not trying to discourage him . I went to great lengths to prevent mine form condensation but I guess I messed up somewhere. They both have hazards. For me watercooling is easier there is little chance of leak if all lines are secured firmly and it is tested before hand.

[Irondog]

Ehi dalva, what sort of P3V4X clock generator have you got? I've no 142 fsb in my P3V4X...???

[Irondog]

Ok guys, I've installed a 300W ps and there are some changes: now I can post @ 124/31 with 1,7v but not @ 124/41, @120/40 I've great problems of stability (Windoz crashes after a while) and finally I can't post @ 133 mhz even at 1,9v. So what's the problem?

[batboy]

Heat is probably your problem. Others tried to tell you that earlier. Also, not all chips will overclock the same. It's a gamble at best. Sometimes you win and sometimes you don't.

[Irondog]

News! I've overvolted the I/O of my P3V4X and now I'm stable at 120/40. I've read that when it posts the voltage of the core is set to 1,65v ALWAYS. So I'll boy a new S370->slot1 adaptor with a voltage control...

[[OC]_SR20DE]

Irondog,

What stepping type is your CPU?.. is it an older type? My 700E cC0 is stunning!. It's now easily running at 1001mhz (143mhzFSB)@ RAM timing 3.2.2. without special cooling. hehehehe... Cpu temps@ 29degree celsius idle, and 38- 40 at Max Load without locking up. All I have is two case fans mounted right on top of the Slot1 CPU.

[Irondog]

mine is a cB0....

[Irondog]

With a 1.9v now I can reach 933mhz! the temps are 27°C for the mobo & 51°C the CPU at full load. But there's a problem: I'm not able to run a session of 3DMark2000... It always crashes in the 3°/4° test! What's the problem? Have I to go past the 1.9v to run stable @933mhz?

[Howard]

Irondog (Jan 18, 2001 03:30 p.m.):
With a 1.9v now I can reach 933mhz! the temps are 27°C for the mobo & 51°C the CPU at full load. But there's a problem: I'm not able to run a session of 3DMark2000... It always crashes in the 3°/4° test! What's the problem? Have I to go past the 1.9v to run stable @933mhz?

Irondog .....the only thing I can tell you at the present time is that your "load" temps are too high. There are no guarantees that afffectively cooling your CPU will give you more speed. However that's the first place I'd start. You have a cooling problem as mentioned by myself and others in previous posts.