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Does my 2.6C suck?

mrgstiffler

mrgstiffler

[H]F Junkie
Joined
Dec 20, 2000
Messages
13,410
Here are my specs:

Abit IS7
2.6C
2 x Crucial 512MB PC2700
Radeon 9800 Pro

I'm trying to OC this thing, but it doesn't want to do anything at all. It's not even stable at 215MHz FSB. I can get it to boot into Windows at 250MHz, but it will quickly restart itself. At 215MHz, it will run for a little while and then reboot randomly. I have a Vantec Aeroflow and temps stay pretty low at 1.7V. The memory will do DDR400 no problem. I have it running now 1:1 at 200MHz. So, I'm pretty sure it's just a weak CPU. Are there any suggestions before I sell it on eBay and get another one?
 
change your ram ratio to 5:4 or 3:2 and try overclocking again. Your ram is holding you back.
 
Probably the CPU, takes a while to get a good one, unless your lucky the first time.
 
Originally posted by Tedinde
Probably the CPU, takes a while to get a good one, unless your lucky the first time.
Click to expand...

I was thinking as much. I've always had decent luck though. I'm gonna try selling this thing for as much as I can get I guess.
 
so is that all you can do if you get a non-oc'ing proc, resell it and go buy another? Also, what cpu batches of 2.6c's have proven to be good OC'ers? I just ordered a 2.6c and I'm hoping I get a good one, if not then I'll probably just keep it if there is nothing else I can do. *prays to the Intel shrine of luck*
 
Originally posted by GameFreak
so is that all you can do if you get a non-oc'ing proc, resell it and go buy another? Also, what cpu batches of 2.6c's have proven to be good OC'ers? I just ordered a 2.6c and I'm hoping I get a good one, if not then I'll probably just keep it if there is nothing else I can do. *prays to the Intel shrine of luck*
Click to expand...

The good batch thing is really just a myth. The only way I can see a certain batch being better than others would be if the batch was certified for a higher speed, but got binned down because of demand.
 
Originally posted by Ben-mod
the cpu is fine get faster ram!
Click to expand...

Um, no, you see, faster ram isn't going to do squat when it's clocked at the same speed as ram that's rated slower. DDR400 = DDR400. Ram rated higher is not going to perform any different at the same speed than other ram (timings aside)...
 
you must have a bum CPU if you have to run 1.7volts with barely any OCing

hell my 2.4 runs a 285mhz bus at 1.5 volts




^yah i didnt need to say that but braggins is fun :)
 
But your ram is not rated for 200mhz (PC3200) it rated at PC2700 which is 166mhz.

It not even rated to run a 2.6C normal bus speed of 200mhz (400mhz effective). Even with 5:4, 3:2 ... it pretty low spec.

If you have it at 1:1 than that 200mhz:200mhz.... so if you try to do 215 or 250, ur memory is running at that speed as well.

That some pretty impressive memory if it could do 215 when it rated at 166.
 
try and get at least one stick of pc3500ish ram (borrow from friend or something) ..then see what you 2.6c can do
 
Originally posted by Maximus825
Um, no, you see, faster ram isn't going to do squat when it's clocked at the same speed as ram that's rated slower. DDR400 = DDR400. Ram rated higher is not going to perform any different at the same speed than other ram (timings aside)...
Click to expand...

He has a pentium 4 C, which should run with 3200 ram, but he uses 2700, and hes trying to overclock. If the memory speed is increasing as he ups his fsb, shouldnt he be using like pc 3500 ram for a better overclock? I know just putting faster sticks in doesnt do anything, but if he wants to overclock, he needs some overhead room on the ram if the FSB is running sync with the memory speed, (which it should be)

Also, its CRUCIAL 2700, how fast do you think its gonna go, I really dont think its the cpu.
 
Okay, you see, there are things called dividers. Meaning, as I push my FSB higher, my memory stays lower... I've tested my memory and my CPU seperatly using the dividers. I know what my memory can do, and now I know what my CPU can do. Other people understand this...
 
Ok no problem, what about cooling solutions, what are you using to cool the cpu. And what are your case temps.
 
I'm using a Vantec Aeroflow. CPU temps stay below 45 degrees under full load, and case temps are around 25 degrees...
 
ok your temps are solid, what about power, have you tried monitoring your voltage levels to see if theres fluctuations. I think the newest speed fan version can map out voltage ratings.
 
dividers dont always work like they should ...I had OCZpc3700 that did 255 1:1 ratio ..but it couldnt do same fsb at 5:4 or 3:2 stable for that matter ...:)
 
Originally posted by ThreeDee
dividers dont always work like they should ...I had OCZpc3700 that did 255 1:1 ratio ..but it couldnt do same fsb at 5:4 or 3:2 stable for that matter ...:)
Click to expand...

I second that. I had a 2.4C that wouldn't go over 215FSB in an IC-7 Max 2 motherboard at 5:4 or 3:2. Thought I had a bad chip. Changed it to 1:1 (with 400Mhz Crucial DDR). Then, I was able to run stable at 250FSB with Ram at 500 Mhz. Dividers seem to react to some memory chips differently.

Chris
 
I just bought 2 sticks of Kingston Hyper-X PC4000 and it hasn't changed anything. This memory is rated to run at 250MHz, but I could NOT run it 1:1 at 250MHz. I have to bump it down to 5:4. But I still couldn't boot into Windows...
 
I suspect the board, memory, or some settings.

I have to suspect memory first.

Its highly unlikely to not get 3Ghz out of a C proc.
 
I wish I could run to CompUSA or one of the independent shops and play with 2.4Cs and 2.6Cs until I found the one that clocked the best, and buy it. Same with memory and mobo.
 
Well, you DO know that you can returned open items to most of those places... You can just decide that you don't want it anymore and they'll take it back within 14-30 days.

I'm going to test my chip in a friend's system who's running his 2.6C at 3.2 and see what happens. I also tried OCing my 1.6A in this board, and that chip was able to hit 2.53 on another board, but topped out at 2.1 on this one. I have a 2.2 Celeron that can hit 3GHz on another board, I should try that one in here and see what happens...
 
After more testing, I found that at 1.9v, I can see my desktop in Windows before it crashes at 250MHz FSB. I still cannot run my DDR500 memory at 500 though :mad:
 
Sounds like the board, I had a very similar problem with an IC7, nearly identical problem in fact.

Memory was not the issue.

CPU is highly unlikely to be the problem.

It is almost certain its the board.
 
Originally posted by Maximus825
After more testing, I found that at 1.9v, I can see my desktop in Windows before it crashes at 250MHz FSB. I still cannot run my DDR500 memory at 500 though :mad:
Click to expand...

Wow 1.9Vcore?! That's way to high for a P4. Anything over 1.7 and it won't last long.
 
Nah, I tried 1.9... Just to see if it would improve. And it did, but not by much. I never run any of my systems over 1.7. It was just for testing.
 
Originally posted by batotman
Sounds like the board, I had a very similar problem with an IC7, nearly identical problem in fact.

Memory was not the issue.

CPU is highly unlikely to be the problem.

It is almost certain its the board.
Click to expand...

So you switched to the Asus board and it improved? I was thinking the AI7 looked good, but I'd rather go with a different company. I'm not that big of an Asus fan though.
 
The problem not only improved, it completely disappeared.

Highest Stable OC with my IC7 = 2.8Ghz
Highest Stable OC with my P4C800 = 3.4Ghz
 
Originally posted by batotman
The problem not only improved, it completely disappeared.

Highest Stable OC with my IC7 = 2.8Ghz
Highest Stable OC with my P4C800 = 3.4Ghz
Click to expand...

WOW, that's pretty impressive!
 
See I know it's not my board because mine died on me a while back and they sent me a brand new one. And I remember once that the P4P800 won something on some review site somewhere where the reviewer put the same 2.4 or 3.2 or whatever into a whole bunch of 865s and the P4P800 got it the highest.
 
try 3:2 ratio and only 1.625 your ram at 200FSB and 5:4 is at spec. I BET YOU WILL GET HIGHER WITH THIS!

If you can get to 250FSB then your ram will be back at spec again. (DDR333)

Also what about your GAT settings. Turn them to all Auto. Dont try F1, Turbo, etc... if you're going to be overclocking.

Too much juice and it will only get you in to windows but wont stay long b/c it overheats too fast.

Sometimes less is better. Mine will boot at default all the way up to about 288FSB but needs a little more juice to get to 300FSB.
 
chrisf6969

"Also what about your GAT settings. Turn them to all Auto. Dont try F1, Turbo, etc... if you're going to be overclocking."

Can you be more specific? I have been all over the forums and cannot find one who swears that Turbo makes a difference - good or bad. What are you specifying by GAT and if you bolded your comment I assume you have some info. Give!
 
Turbo increases memory scores slightly (street racer & F1 more), but when OC'ing usually just causes instability. AS IN not booting as you start increasing the clock.

Most people set all of the GAT settings to AUTO when trying to overclock. You can increase your memory bandwidth faster & better by OC'ing the FSB/ram.

as in this...
screen3666.jpg
 
Yeah, even though my RAM is actually running slower at 246 FSB 5:4 than at 200 1:1, I get like 400 MB/s in Sandra out of that. Goes up from 4.8k to 5.2k. Dang would I love to see what she could do at 300 FSB. I'd almost buy a 2.4 that someone had tested to get up to 3.6, but part of me sees that as too much of a n00bish thing to do.
 
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