Pentium III-S 1.26GHz

[slb132]

I'd first like to say that I love coming here and reading posts and gaining a lot of knowledge. I have a question for all of ya'll. On 3dMark2001SE it says my Processor is an Intel Celeron and my Maximum Internal Clock is 1.50GHz. Here are my specs:

DFI CS62-TC Mainboard (Socket 370)
Intel Pentium III-S - 1.26GHz (OC'd to 1.42GHz)
Samsung 512MB PC133
ATI Radeon 9100 128MB DDR
Soundblaster Audigy 2 Platinum

Ok, so I've managed to OC the CPU to 1.42GHz but when I try to pump the FSB from 150 to 160 it increases the CPU to 1.52GHz. The DOS screen shows it at 1.52GHz but it won't go all the way through Windows 2000, it stops at a blue screen. So the way I'm thinking is that my OS will only allow me to go to 1.5GHz, but the problem lies that I can't increment the FSB from 1Mhz at a time. My question is why does 3dMark2001 read my CPU as a Celeron with 512KB L2 Cache? Does it even know what Pentium III-S is? Also, is my system pretty good? I get around 6,900 points on 3dMark2001, is that decent? Any feedback would be appreciated! Thanks!

 

[phial]

i like to compare the P3 to the Athlon

its clocked alot lower than a P4, but its much more effective clock for clock. actually, i believe a P3 with 512 cache is faster than an Athlon at the same speed. i would say, you could compare it to a P4 2ghz probably

as for 3dmark detecting it as a celeron.. well, when that program was released, the only P3 based chip that went above 1ghz were the celerons (celeron is a p3 with less cache) ... so thats probably why its detected as that.

if you could take a celeron, and solder on extra cache somehow, you would create a P3 (or P4 for newer celerys)

so your p3 at 1.4 is very very decent. and yeah, i would say uyer 3dmark score is good. if you overclock your 9100 it might go quite a bit higher, because usually people with an 8500 based card (the 9100 is a 8500 with a new name) can sometimes reach up to 10,000. of course they have incredibly fast CPUs.

btw, was does the S stand for?

 

[sjonnie]

Also, is my system pretty good?

Um? I dunno, you tell me, you're the one who uses it. All this benchmarking, tweaking, overclocking and stuff, well it's nice if you can get your games to play better or a DIVX movie to look better, but normally I think it is just boys comparing dicksize. If you computer does what you want then I would say it is very good.

<A HREF="http://www.anandtech.com/myanandtech.html?member=114979" target="_new">My PCs</A>

 

[sjonnie]

btw, was does the S stand for?

S stands for server. The PIII-S was intended for the 32-bit server market before the P4-Xeon really got itself established. It still has applications however, mostly in low-profile 19" rackmount where it fits in nicely due to its low power consumption and thermal dissipation, stability and L2 cache.

<A HREF="http://www.anandtech.com/myanandtech.html?member=114979" target="_new">My PCs</A>

 

[slb132]

When I asked is my system pretty good, I wanted to know how it compares to a Pentium 4 system or Athlon XP System. I've heard that the newest Pentium III's outperformed the oldest Pentium 4's. I'm wondering why I can't get my CPU to overclock past 1.42GHz? Is it my motherboard that could be preventing me from doing this? I know DDR Mobo's for the P3 don't maximize the use of the bandwidth so that would be pointless to get a DDR Mobo for the P3 right?

 

[sjonnie]

I wanted to know how it compares to a Pentium 4 system or Athlon XP System

Yes, but doing what? If you want to know how many MFLOPS your computer does use Sandra, that can give you the info for an Athalon XP or a P4.
<pre> Dhrystone ALU Whetstone FPU
2x PIII-S 1.28 GHz 6999 3372
2x PIII 1GHz 5400 2680
2x P4 Xeon 1.6GHz 5900 3910
2x P4 Xeon 2GHz 7375 4888
2x AMD Athlon MP 1.4GHz 7744 3879
</pre><p>Okay, fine, what do you know now? All of those systems are going to be fine running a webserver or doing CAD or office or graphics or something (except we can perhaps expect alot more stability from the PIII). But some of them will work better doing DIVX encoding or 3-D rendering.

I'm wondering why I can't get my CPU to overclock past 1.42GHz?

It could be that the processor just won't go faster than that, or perhaps it gets too hot or maybe your Northbridge gets too hot, or maybe you need to increase the Vcore, or perhaps your memory won't support a FSB of 160, or the motherboard won't, or PCI devices, or maybe you need to increase the memory voltage or decrease the memory timings i.e. 101 things.

The best OCing board for the PIII was the Asus TUSL-2C. Maybe you want to get one, maybe not. Why do you need to go faster anyway? DDR is not essential for the PIII although DDR has more upgradeability than SDRAM and is possibly better for overclocking although PC150 SDRAM used to be available also.

<A HREF="http://www.anandtech.com/myanandtech.html?member=114979" target="_new">My PCs</A>

 

[Crashman]

It's probably your memory that won't let you overclock farther, although it could be other things such as the CPU, chipset, a PCI card...

<font color=blue>Watts mean squat if you don't have quality!</font color=blue>

 

[slb132]

Windows 2000 stops the CPU from booting up if it goes past 1.50GHz. I can't increment the FSB to go up to 1.50GHz, 1.42GHz is all I can get. The FSB at 1.42GHz is 150MHz X 9.5 multiplier. I can't change the multiplier period and I can't get the FSB up to say...158MHz because it increments up to 160MHz making it a 1.52GHz. The chipset is Intel 815EP. Cards I have are SB Audigy 2 Platinum, ATI Radeon 9100, 4 USB 2.0 ports (card), MPEG Station TV Tuner, and a 3Com Etherlink XL 10/100 PCI. I have 1 stick of Samsung PC133 512MB (the Chipset won't allow any more memory than that) This is what 3dMark2001 says about my CPU:

Manufacturer: Intel
Family: Celeron(tm)
Internal Clock: 1.42 GHz
Internal Clock Maximum: 1.50 GHz
External Clock: 150 MHz
Socket Designation: Socket 370
Type: <unknown>
Upgrade: ZIF Socket
Capabilities: MMX, CMov, RDTSC, SSE
Version: Intel Pentium III
CPUID: 0x000006b1

And of course we know it's not a Celeron. Although my motherboard says Supports Intel Celeron Processor (Socket 370) and doesn't mention a Pentium III anywhere. Maybe it's the motherboard? Oh well, it's not like I'm going to go out and buy another motherboard to overclock it a few more MHz..

 

[tombance]

I dont think Win 2k can actually stop your computer from booting because you overclocked it. Its more of a case that your memory is running way out of spec and is probably causing registry errors/crashes etc. What does win 2k say when you try to boot at 1.52? or does it just freeze?

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

 

[tombance]

Notice your memory is only PC133? this means that it is only certified to run at 133FSB, not 160 as your trying to run it at. Also, dont take any notice of that maximum Internal clock of 1.5ghz, im not sure why they put it there, but you can certainly go higher than that.

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

 

[Crashman]

It sounds like you need to either increase your core voltage or decrease you memory ratio. I don't know if your board supports either of these options, but many i815 boards would allow you to use the CPU/RAM bus ratios of 133/100. That ratio would allow you to clock to 176MHz bus speed without overclocking your memory. PCI devices will probably start failing at around 160-166MHz.

<font color=blue>Watts mean squat if you don't have quality!</font color=blue>

 

[slb132]

Windows 2k Pro says this when I go for 160MHz FSB:

The system is shutting down. Please save all work in progress and log off. Any unsaved changes will be lost. This shutdown was initiated by NT AUTHORITY\SYSTEM

Message:
C:\WINNT\System32\Services.exe terminated unexpectedly with Status code 128

Crashman, what category could I check to find the Memory Ratios? I'll check my BIOS and show you the options I have in a second.

 

[Crashman]

That shutdown would indicate a part failed to function properly, causing a data error.

In BIOS you might find a CPU/RAM/PCI ratio of 133/133/33. If you do, changing it to 133/100/33 might be helpfull. This is not the actual bus speed (150MHz you're using now), but the ratio at a base buspeed.

<font color=blue>Watts mean squat if you don't have quality!</font color=blue>

 

[slb132]

CPU Frequency Control

Auto Detect DIMM/PCI Clk - Disabled/Enabled
Spread Spectrum - Disabled/+-.5%/+-.25%/+-.38%
CPU Host/PCI Clk - 133/33 137/34 140/35 145/36 150/37 160/40 166/41
CPU Clock Ratio - 5.5 6.0 6.5 7.0 8.0 8.5 (you get the picture, it doesn't matter though, it only reads at 9.5)

Advanced Chipset Features (the first option is what I have)

SDRAM CAS Latency - 3 or 2
SDRAM Cycle Time - 7/9 5/7
SDRAM RAS - To CAS Delay - 3 or 2
SDRAM Precharge Time - 3 or 2
System BIOS Cacheable - Disabled/Enabled
Video BIOS Cacheable - Disabled/Enabled
Delayed Transaction - Enabled/Disabled
AGP 4X Mode - Enabled/Disabled
System Memory Frequency - Auto/100MHz/133MHz

Temperatures

Current System Temp - 36C
CPU Temp - 40C

This is all the Categories that would have anything to do with overclocking.

 

[Crashman]

Good, set System Memory Frequency - 100MHz
That should prevent the memory from being the limitting factor. The actual memory frequency using the 100 setting at 160MHz bus should be 120MHz.

<font color=blue>Watts mean squat if you don't have quality!</font color=blue>

 

[slb132]

I tried setting the Memory to 100MHz and the FSB to 160MHz but then it gives me a lot of beep codes. After the beep codes it resets the BIOS to default, 1.26GHz (133X9.5) I guess the best thing I can get out of this CPU is 1.42GHz(150X9.5)

 

[Crashman]

Well, that almost narrows you needing to increase CPU core voltage in order to make it work, and you don't have any easy way of doing that on your board.

<font color=blue>Watts mean squat if you don't have quality!</font color=blue>

 

[slb132]

How would I go about increasing the core voltage on my board? I'm always up for a challenge, and thanks for all your help, I appreciate it a lot.

 

[jclw]

I have a guide with pics halfway through <A HREF="http://forum.oc-forums.com/vb/showthread.php?s=&threadid=59420&pagenumber=2" target="_new">this</A> thread (page two for me).

As always, it's at your own risk.

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

 

[slb132]

All the pics in the thread are broken links for me. Do you have another link that shows the pics? Anyone else perhaps? Just so you know my VCore is at 1.42 and my CPU Temp at 1.42GHz is 42C (that's a lot of 42's). Could I still get a lot more out of my CPU? Thanks again.

 

[jclw]

Really? They all show for me this morning.

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