• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

My continuing overclocking journey - P4 1.6a on Abit IT7 (long)

A

agrall

Senior member
Well, I would have posted the whole long thing here, but Anandtech does not support images... So, I put it all in a web page. Click on it below in my signature. Any comments/suggestions are more than welcome! As you can see, I'm still a researcher at heart! 🙂

 
Oh... I should append the story by saying that, with the current BIOS, the Abit IT7 is limited to a max CPU voltage of 1.70.
 
What memory timings would work in that case? It was recommended to me that I stay at 2-6-2-2 timing if possible above 133.
 
I got a questions...

1) Have you really tested these for stability??? Prime95 or looped 3dmark or sandra for hours??? Some of those fluctuations in numbers could be signs of instability. One or two passes through 3dmark is not always enough to tax the system and show instability....

You can wire mod for more voltage....Simple trick...Do I 1.7v and that should allow you to boost it up to 1.9v or so....Do you know what the vcore is like during loading?? Should show what it is at idle and load. I haven't heard of too many boards that actually run at what is set in the bios. They either undervolt or overvolt...

I find it interesting the temp chart....I think something is either wrong there or goes to my statement that sandra is not taxing the system enough. cpu temp should increase with each cpu clock increase and each vcore boost...That chart is messed up...
 
I agree that the there's something wrong with the way you measured temperatures. Are those idle temps? If so, they seem kind of high. Are you using the retail HS/fan and what was used for the thermal interface?
 
What memory timings would work in that case? It was recommended to me that I stay at 2-6-2-2 timing if possible above 133.
Click to expand...
You'll likely need to go to 2.5, 6,3,3 @ DDR400. You will get a huge performance increase over DDR300. The slower timings dont hurt it very much.
 
Originally posted by: Morph
I agree that the there's something wrong with the way you measured temperatures. Are those idle temps? If so, they seem kind of high. Are you using the retail HS/fan and what was used for the thermal interface?
Click to expand...

I am using an Arkua 8568 HS/fan and arctic silver 3... I really think the temps should be lower than what I am reading...
 
Originally posted by: Duvie
I got a questions...

1) Have you really tested these for stability??? Prime95 or looped 3dmark or sandra for hours??? Some of those fluctuations in numbers could be signs of instability. One or two passes through 3dmark is not always enough to tax the system and show instability....

You can wire mod for more voltage....Simple trick...Do I 1.7v and that should allow you to boost it up to 1.9v or so....Do you know what the vcore is like during loading?? Should show what it is at idle and load. I haven't heard of too many boards that actually run at what is set in the bios. They either undervolt or overvolt...

I find it interesting the temp chart....I think something is either wrong there or goes to my statement that sandra is not taxing the system enough. cpu temp should increase with each cpu clock increase and each vcore boost...That chart is messed up...
Click to expand...

I agree that the chart is messed up. It doesn't seem right... I think I may wait for Abit to release a BIOS that allows higher voltages before I stay at one of the higher speeds...
 
If i were you i wouldt wait for abit to release a bios with higher Vcore options, because they might never do it. Take Duvie's advice and do the wire mod. Do a search on yahoo and you should be able to find out how to do it. ALso get Motherboard monitor 5 so you can have some voltage readings.
 
You should try 3:4 ratio with 2.5-3-3-6 settings and see if you can get better stability with a higher FSB.
 
You should try 3:4 ratio with 2.5-3-3-6 settings and see if you can get better stability with a higher FSB.
Click to expand...

I think I have to argue here. I don't see it being better stability since it would give more stress to the ram running it at a higher frequency. Considering that a good overclock is over 150mhz FSB for a 1.6a(2.4Ghz), the ram would be running at 200mhz at 3:4 ratio. Most RAM is unable to reach those kind of speeds unless you have Corsair XMS2700 or burned in Samsung PC2700 RAM thats capable of running beyond 190speeds. Memory overclocking is more limiting, it depends how far your ram can take you. In most cases, not much.
 
agrall

Alright after looking at your experiment page, I know exactly what is limiting you. Samsung 512 PC2700 are not CAS2 rated, infact they barely run CAS 2 beyond 150 mhz, which is probably why your stuck at 2.4 Ghz. Change your DRAM settings to Cas 2.5,6,3,3 and it should be able to go much higher than that. Its most likely your able to reach 160FSB no probs.
 
Dexion,

My kingmax pc2700ddr (5ns chips) ran fine at 410mhz ddr with 2.7v on a Asus p4s333board...I ofcourse knew they were cas 2.5 and so I ran them at that setting....it did cas 2 at 333mhz but Idon't remember much of an improvement....No burn in...It ran for 10 weeks, through many divx encodings not to mention thorough memtest passes at differing speeds...


However those same sticks just moved to epox i845d mobo and they don't like any aggressive settings past 350mhz and wont boot at 400mhz. I think the last boot I got was like 380mhz
 
Dexion, What kind of Samsung PC2700 have you used? I run Samsung original PC2700, and also set up another PC pretty much identical to mine with OEM Samsung from Dallsmemory. Both of them easily do DDR400+ with complete stability. I and MANY others here run that setup. Yeah, you need to go to cas 2.5, but DDR400 @ cas2.5 is A HECK OF A LOT FASTER than DDR300 @ cas2. Here are SiSoft benches of my setup running 2.4 Ghz DDR400 cas2.5. If you have good Samsung PC2700, running DDR400+ is very possible.
 
I'll have to agree with the general consensus. I'm running my Sammy PC2700's at CAS 2.5, 217mhz (435 DDR) and I'm getting 3127 MB/s (almost PC-1066 levels!) in Sandra with rock solid stability. If you drop to CAS 2.5, then you might even be able to run your memory at 4:6 (if your mobo supports it). Greater bandwidth is more important than CAS 2
 
435!!! $%%%%^$!!! Damn....

Give me your memory!!!😉

At 217mhz I would only have to drop my fsb up to potentially 162mhz and still stay at 2.6ghz while getting phenomenal bandwidth...

What is your full setup??? Chip and mobo, voltage for memory...please do tell...
 
I have updated my web page... click below!

I am very intrigued by my current 2400 settings, and I am amazed that the CPU temperature has dropped as I increased the memory voltage. As I type this, my processor is sitting at 49.5 deg C. Earlier today, at my previous 2272 setting, it was 60 deg C while ?idle.? Odd? Anyhow, I would like to do some stability settings at this new 2400 settings? Any recommendations?

It may also be worth noting that while I have the Vcore set to 1.7 and the Vmem set to 2.8, their actual values according to my hardware monitor are 1.65 and 2.74, respectively. They are at their maxed-out settings in the BIOS, however.
 
Well, I just noticed something interesting...

During my testing, the SETI command-line client must have shut down... When I turn it on and off, I can watch my CPU temperature change...

SETI off - ~50 deg C
SETI on - ~60 deg C

I still think the motherboard's measurement of CPU temp may be a bit on the high side...
 
Yours is exactly like mine. Abit droped the ball on temp monitoring
Its warm today but my CPU temps idle are 50c and have seen as high as 70c under load. Figure if you have one of these boards your temps are off 10c.
 
Damn... My computer just blue-screened on me and rebooted itself...

Guess I'll have to take it down a couple of notches...

Maybe I'll try 2368/296...
 
Most likely ram will give you BSOD....Turn the settings down a bit...I know you are running cas 2.5, but run normal,fast or safe...whatever board offers...Usually when ocing if I got a bsod I changed ram settings and trouble went away...

 
You must log in or register to reply here.

TRENDING THREADS

Back
Top