Tully Voltage (Benchmarks are in!!!)

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camieabz

camieabz

Splendid
Jan 29, 2001
8,709
4
31,815
Hi there!

I've been messing with my PIII 1.4 tully, and here's the story so far...(Abit ST6-R, 512MB PC-150)

Pushed up in increments of 1. At 140 and 145 FSB I took Sandra Benchmarks and temps. Temps were 1-2 C higher. I also ran the CPU burn-in at 145FSB for 10 re-runs. No probs!

At 148 FSB I had explorer.exe close on me. Same for 149 FSB and 150 FSB. Also after taking the CPU voltage from 1.450V to 1.475V, explorer.exe still did it's thing at 150 FSB. So now it's at 1.500V

What's the limit on core voltage here? Just in case it starts to fall over in the event of CD-R burning or heavy stress testing etc.

That's it!

Funnily enough, Sandra 2002 Pro reports my FSB as 1 higher than it's set in my BIOS, regardless of the setting. So it says I'm at 1585MHz when it's actually 1575MHz, but that's ok. In the CPU tests, the only thing beating me is the iSSE2 score of the P4 2GHz, as I don't have that. CPU Multimedia Scores are way up.

I thoroughly recommend this one if you're looking for a S370 FCPGA/2 upgrade.

<b><font color=blue>~ <A HREF="http://forums.btvillarin.com/index.php?act=ST&f=41&t=324&s=58e94ba84a16bedfebbf0f416d5bac48" target="_new">My System Specs</A> ~<font color=blue></b> :wink:
 
B-B-Bump...anyone?

Oh, and I have the first benchmarks up.

<A HREF="http://forums.btvillarin.com/index.php?act=ST&f=23&t=1474&s=8083665b1b76e94a17c41d5eb4acd8f9" target="_new">Read em and weep (if you're a PIII owner, that is...)</A>

<b><font color=blue>~ <A HREF="http://forums.btvillarin.com/index.php?act=ST&f=41&t=324&s=58e94ba84a16bedfebbf0f416d5bac48" target="_new">My System Specs</A> ~<font color=blue></b> :wink:
 
What, again, is nominal for the Tully's? 1.5V doesn't seem all that high to me, but I'd want to search for tales of 1.5V mortalities on that part before I tried it. At any rate, I think you should be most worried about heat. If for the speed you want , you have stability, and the temps don't seem that bad, then why not run it that way?
 
Idling in the mid 30s. Low 40s on load.

<b><font color=blue>~ <A HREF="http://forums.btvillarin.com/index.php?act=ST&f=41&t=324&s=58e94ba84a16bedfebbf0f416d5bac48" target="_new">My System Specs</A> ~<font color=blue></b> :wink:
 
Guess no one cares.

Tullys are nice but they came too late to make an impact.

I wish Intel had skipped the whole Willamette introduction and went with Tualletin (sp?) for about 6-8 months. It would have made life so much more pleasant if no one ended up owning a crappy 1.3-1.7 Ghz Willamette based system. Tullies would have been so much better.

As for overclocking them today, Tualletin seems inconsequential compared to Northwood 1.8 that will easy do 2.4+ Ghz and expensive compared to Tbred B 1700+ that only costs about $60 USD and can overclock to 2.1+ Ghz to boot.

Back to your circumstance... Don't know if it's your northbridge, memory, temps or what that is limiting your bus speed, though. What chipset is on the ST6-R? Too bad it's so hard to get memory faster than PC150 these days, and even that's hard to find.

<b>99% is great, unless you are talking about system stability</b>
 
As for costs, my CPU was £100 and the memory £77.

In total, that would normally be the price of the CPU online. So I figure I've gained.

I may have spent the same cash on an XP1800+, some DDR and would have <b>had</b> to have settled for a mobo for around £60. Really just the K7S5A or MSI stuff.

Then I would have needed a 400W PSU to deal with that issue, so the price is actually worth it. Not to mention the fact that I have an ATA-100 RAID mobo. Naw, I'm happy with this setup (assuming it doesn't blow :smile: ) for a while. Eventually I'll get myself a 2-3GHz CPU when the prices make it the bottom of the range. Depends on mobo/mem prices too.

Right now, my priorities are on 2 x 80GB JBs, and a new monitor.

Oh. Anyone recommend a gfx card which wouldn't be wasted in this system. Nothing too expensive, nothing too crap. I have a 64MB Radeon, but plan to either shove it into the PIII GHz system, or sell it.

<b><font color=blue>~ <A HREF="http://forums.btvillarin.com/index.php?act=ST&f=41&t=324&s=58e94ba84a16bedfebbf0f416d5bac48" target="_new">My System Specs</A> ~<font color=blue></b> :wink:
 
I'll keep my eye on things. I have a feeling that my Aopen 300W PSU may be feeling the strain. Dunno. Shouldn't be, but then it wasn't designed for taking on all the kit I'm gonna be using.

If I get any more probs, I'll up the voltage to 1.525 or maybe 1.55, but I'll not try any higher. I'd rather run the thing at 143MHz (1500Mhz) than burn the CPU. We'll see.

Maybe I'll look to splashing out on an Antec Truepower PSU. 430W should do. :smile:

<b><font color=blue>~ <A HREF="http://forums.btvillarin.com/index.php?act=ST&f=41&t=324&s=58e94ba84a16bedfebbf0f416d5bac48" target="_new">My System Specs</A> ~<font color=blue></b> :wink:
 
gah, i'm starting to think Antec isn't truly the best out there, I had no luck at all using my Antec Truepower 430 watter

Instead of Rdram, why not just merge 4 Sdram channels...
 
Don't tell me Antec is up to their old game with overrated power supplies! I was thinking about getting one of those Truepower PSUs.

Maybe I'll get the Thermalright PSU with the built in line conditioner. Now, where is that review?...

My Enermax 330 watter was at it's limits but then I replaced the Tbird @1.5 with a Tbred B at 2.1 and the Enermax seems to have calmed down. 5V rail doesn't drop to 4.6 V any more. Around 4.8 V at heavy draw.

<b>99% is great, unless you are talking about system stability</b>
 
I'm not doubting it, and Crashman seems to think so too. If you're thinking of Thermalright, then you might as well look for one from Channelwell technology, they're the ones that build the PSU's for Thermaltake. Enermax 330 watter already at it's limit? That's a new one, didn't think you'd max out that low. My best PSU's in honest have been Enlight, surprisingly, it's let me max out my Thouroughbred B.

Instead of Rdram, why not just merge 4 Sdram channels...
 
Money is the issue with me as well. A year ago I gave my old KT133 rig to my nephew. I had some good PC150 memory so I bought myself a KT133A mobo. Now I wish I had sprung for a DDR rig. (Though, DDR was pretty expensive last year).

Anyway I have an outdated mobo, some good memory, and the only sound cards I have are ISA. So for now I jam in an XP 1700+ and overclock it to 2100 Mhz. Cost me $53 USD and I end up with a CPU that is a lot cooler, about 8 degrees. Which means I'll be able to make it a lot quieter and that alone will be worth the $53.

The extra horsepower (2.1 ghz vs 1.5) is barely noticeble. My gaming benchmarks didn't improve much although the gaming experience did. Average framerates obviously aren't much better but minimum framerates must be because games are noticebly smoother. I'll have do some Serious Sam benchmarks which calculates minimums. Hopefully I saved my Tbird scores so I can compare.

I'm curious. How much performance do you gain from two drives in RAID 0 configuration? Is it really worth giving up half of the potential storage?

A Radeon 8500LE/9100 would be pretty decent for that rig of yours. I replaced a Geforce 2 GTS with a Radeon 8500 and 3DMarks went from 4500ish to 8000. That's with a Tbird @1.5. Your Tully rig shouldn't be much different.

I can't figure out if it's the SDR SDRAM or the Radeon 8500 that's limiting me though. I expected bigger gains than I got with the Tbred B @2.1.

<b>99% is great, unless you are talking about system stability</b>
 
Oops, I meant Thermaltake.

The things that were holding me back from getting a TruePower were some comments that a reviewer made.

Even though it tested well he was concerned that the fan ran so slowly and that such hot air was coming out the exhaust. He also thought the thermal control of the fan was curved wrong. Of course, then he went on to say it was the best power supply he ever tested. However, the comments stuck in my mind and then there were all the complaints about earlier model PSU's.

Part of the problem with this Enermax is that the 5 Volt rail is a little low to begin with. It's at about 4.91 V with virtually no load. Stick in a Tbird 1.0 overclocked to 1.5 at a lofty 1.90 volt with temps reaching 50 degrees and your looking at one power hungry CPU. Would not be surprised if it drew 100 watts.

Anyway, the power supply hangs in there down to about 4.65 volt. Below that things become unstable.

I don't think the issue is affecting my Tbred B overclock. The Vcore readings seem fine. I can get to 2.1 ghz at 1.75 volt but even 2.0 volt won't let me get any further. I can increase vCore even higher but I don't want to try it with air cooling. The 5 volt rail still drops but not as far as before.

<b>99% is great, unless you are talking about system stability</b>
 
I've run between1.65v to 1.75v for over 6 months now. P3 1.26@1583 166fsb. Would not suggest over 1.75v for anything but simple benchmarking.
Click to expand...
Agreed.

At 1.75v you have a good chance of getting up to 1.74ghz (166FSB) if you've got good memory.

*Dual PIII-800 @900 i440BX and Tualeron 1.2 @1.74 i815*
 
That too, but most power supplies I have don't really put out much exhaust air anyway. Just a very small flow of hot air. Oddly, it wasn't bad, just not the most stable or highly rated power supply i've used. Does the Enermax have the little rheostats to up the voltage? I know some of the higher end ones allow you to bump it up a bit manually. Tbirds are very heavily volted and watted processors. Still, I do think my Enlight may be holding back my stability. I can do about 8 hours of 3d mark 2001 without any crashes, and never hard lock. Just about all other programs and games run well too. It's probably not going to affect how high you get, just the stability in the end.

Instead of Rdram, why not just merge 4 Sdram channels...
 
Well this session probably isn't going to last long. I've got the Tbred up to 2250 but it needed 2.15 volt. Temp is up to 51 degrees and climbing.

The Enermax has always put out slightly warm air, just barely above that coming out the one additional exhaust fan.

Nope, no trim pots. They were added to Enermax PSUs after the EG-351VE (mine).

Not that I know a lot about power supplies but what I see from mine I really don't understand. As the 5 volt rail drops the 12 volt rail rises. 5 V is now at 4.63 V and 12 V is at 12.6 V. The 3.3 volt rail always holds steady.

I always thought that the 5 V and 3.3 V rails are linked and that the 12 V rail is independent but it doesn't seem the case. There is some kind of push-pull going on.

I think I better shutdown. My heatsink doesn't seem to be able to cope.

I think this Tbred needs better cooling than I have.

<b>99% is great, unless you are talking about system stability</b>
 
The lowest voltage I've heard of "sudden death" occuring at was 1.75v. But that's rare. And anything below 1.75v should be fine. I run mine at 1.60v, 1.2@1466. I'd go higher, but my memory can't take it for more than a few seconds. I can get 1650MHz at 1.90v...just to boot to the POST screen. Thinking 1.70v might give me 1540MHz or more, if I could find better memory.

<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
 
What CPU are you overclocking?

Doesn't sound like a 1.4, or you don't have PC-150....

Anyway, the memory I'm using is Crucial PC-133 'guaranteed' to work at 150MHz. I'll not push above that. I want a stable system after all. Like I said before, if I need to, I'll push the voltage to 1.55, but I think my PSU may be feeling the strain. It certainly will once I've taken the two systems and swapped about the parts to have one bare bones server and one 'all singing and dancing' system.

<b><font color=blue>~ <A HREF="http://forums.btvillarin.com/index.php?act=ST&f=41&t=324&s=58e94ba84a16bedfebbf0f416d5bac48" target="_new">My System Specs</A> ~<font color=blue></b> :wink:
 
Re-read it....1.2

I'd be delighted with 163MHz out of my one. That would be 1711MHz.

At 171MHz I'd be at almost 1800MHz!!!

That's insane! That's almost a 33% overclock on a CPU which is at the top end of it's core.

Naw. Not for the faint hearted amateurs like me. :wink:



<b><font color=blue>~ <A HREF="http://forums.btvillarin.com/index.php?act=ST&f=41&t=324&s=58e94ba84a16bedfebbf0f416d5bac48" target="_new">My System Specs</A> ~<font color=blue></b> :wink:
 
Here's another little Q.

1400 @1575 (133 @ 150) = 12.5%

So 12.5% of 1.45V = 0.18125 added to 1.45 = 1.63125

So 1.625 or 1.65 should be the sweet spot. Or is it more trial and error than simple logic?

<b><font color=blue>~ <A HREF="http://forums.btvillarin.com/index.php?act=ST&f=41&t=324&s=58e94ba84a16bedfebbf0f416d5bac48" target="_new">My System Specs</A> ~<font color=blue></b> :wink:
 
Interesting theory. I was thinking no way, but ran the math on my systems numbers, and oddly enough that's exactly how mine is. Hmmm...I've never heard that one before.
 
Doesnt work for Thoroughbred B's. I need LESS than stock voltage to reach 1875mhz on a 1467mhz processor - nice eh :smile:

<A HREF="http://service.futuremark.com/compare?2k1=5467618 " target="_new">Almost Breaking 12k!!</A>
 
I reckon the theory is bunkum.

Svol tells me his system is far greater overclocked than his voltage.

"I did a 33% OC with a P3 700Mhz and increased the Vcore just 0.1V above the original 1.7V
According to what you're saying I should have raised it up to 2.3V."

So that's that. :smile:

<b><font color=blue>~ <A HREF="http://forums.btvillarin.com/index.php?act=ST&f=41&t=324&s=58e94ba84a16bedfebbf0f416d5bac48" target="_new">My System Specs</A> ~<font color=blue></b> :wink:
 
The voltage each chip needs to hit a certain speed varies. It can depend on the stepping, the week manufactured, and of course the location on the wafer which it came from. Cores that come from the middle of the wafer tend to overclock higher with less voltage then those from the edges.

My week 29 tB1 1.2 (default 1.5v):
- does 1600 @ 1.50v
- does 1650 @ 1.60v
- does 1700 @ 1.70v
- does 1740 @ 1.75v

I've run it at 1.85v (maximum supported by VRM 8.5) for a while (1.87v reported) but it doesn't help. I think I'm being held back by my memory (64mb PC100 CL2 @ 145mhz 3/3/3/7/9).

*Dual PIII-800 @900 i440BX and Tualeron 1.2 @1.74 i815*
 
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