Just Cant Get 200 Fsb Why Oh Why

[bigjonnyauk]

HI ALL right sit back have a read and let me know what you think

i am fairly new to this o/c game thanks to you guys lol

my system is as follows

TAGAN 480W POWER SUPPLY
A7N8X E-DELUXE MOBO
512 MG RAM (CORSAIR 2X256 pc3200 MATCHED DUAL CHANNEL MEM) AT 2.5,3,3,8
BARTON XP2500 LOCKED
GEFORE FX5900 GRAPHICS CARD

USING LATEST NFORCE DRIVERS AND BIOS 1006 ON MOBO WHICH IS RELEASE VERSION ?(later version are just for better ram compatibility with other brands so not worth it yet )

right the problems

at normal fsb 166 everything runs great prime stable

made the following adjustments

fsb =====200 multiplier 11x set
cpu core =======1.775 1.8
ram settings 1:1 2.5 3 3 8
ram voltage pushed up one to 2.7
agp lock tried auto and 66mhz

ran prime and dosent last very long at all before it craps out saying hardware failure or incorrect rounding up

but if i lower the fsb to 190 and cpu core to 1..7 and keep the ram voltage same prime runs for ages left it for about 7 hours on main torture test and didnt crap out

so this is what i think (but remember im a bit of a newb)

cpu just dosent like going to 200fsb
RAM is not good but it is 3200 so should do 200fsb even if its corsair value select
board dodgey

temps are ok running prime for 6 hours idle at 44 loaded at 52

i also see this ram settings 2.5 3 3 8 should i change these i dont exactley understand what they do

should i put the ram voltage up .1 more to 2.8 or even 2.9

how high can i push the cpu core voltage




ANYTHING YOU GUYS CAN SUGGEST THAT MAY HELP

[CrapshoT]

try hitting the 200fsb with just 1 stick of ram in.Switch them to see if it works with both sticks.I'd put their vdim up to 2.8. I wouldn't go over 1.8 with your cpu unless you have a good HS/F.Check out the Uber bioses.I used the uber 1005 on my A7N8X deluxe and i could get up to 222fsb on that.
check out these forums http://www.nforcershq.com/forum/view...9e0e7689d86067 as it's for asus nforce boards and there's bound to be more than you with this problem.
I'll try and find the Uber bioses for you in a mo !!!
find them here http://homepage.ntlworld.com/michael.mcclay/
Remember to read and make sure it's the right bios for your board.

[bigjonnyauk]

crap shot thanks for that nforce link you are right it seems i am not the only one with this trouble

there seem to be a hell of a lot of people with recently bought retail xp2500 bartons that will not go above 190 no matter what they do in their bioses or what changes they make i knew i should have waited i think i maybe just one of those many and have to live with it
















FOR NOW LOL

p.s if i got a cpu at 200 retail this should run ok right !

[CrapshoT]

Do you mean a xp3200? Yes I think they're 200fsb stock.Someone will correct me if i'm wrong.Are you thinking of buying a different cpu?Let me know if you are!! I could help you out

[GreenPiggy]

One thing to suggest. Corsair value select RAM is not rated to C2.5, its rated to C3.
So I would up those timings to something like 3,4,4,11 and try it again at a slightly higher FSB. Do it as Crapshot says above with one stick in first to check.

[Defiant]

Well your chip is a 333Mhz FSB not a 400Mhz. So your pushing the chip past its intended capabilitys.

It should only 200Mhz on the dual ram part of your set-up and then 166Mhz for you FSB.

[CrapshoT]

One thing to suggest. Corsair value select RAM is not rated to C2.5, its rated to C3.
So I would up those timings to something like 3,4,4,11 and try it again at a slightly higher FSB. Do it as Crapshot says above with one stick in first to check.

Nice spot!! i never realised that.That could be another reason as well.

[GreenPiggy]

Well your chip is a 333Mhz FSB not a 400Mhz. So your pushing the chip past its intended capabilitys.

It should only 200Mhz on the dual ram part of your set-up and then 166Mhz for you FSB.

The fact is that if you know anything about AMD steppings, you will realise that the only difference between a 2500+ and a 3200+ is that the bridges have been manipulated to tell the board it is a 2500+
It may be that he has the poor end of the batch, that is what we are trying to find out.
As for the second sentence, what does that actually mean? You've lost me

[CrapshoT]

I think he means run the cpu and ram out of sync not 1:1. so that the cpu runs at 166 fsb but the ram runs at 200mhz.I prefer to stick to 1:1 myself.
will the cpu do 12 or 13x166 as this is about 2gig!? see if it works.

[Defiant]

The fact is that if you know anything about AMD steppings, you will realise that the only difference between a 2500+ and a 3200+ is that the bridges have been manipulated to tell the board it is a 2500+
It may be that he has the poor end of the batch, that is what we are trying to find out.
As for the second sentence, what does that actually mean? You've lost me

What im trying to say (May be a bit misty).

Is that his Chip is designed to be a 2500+ chip, I know that these chips are very close to the design of the 3200+ ones. But you have to understand that these chips were sold and classed as 2500+ not 3200+. If you manage to get it to 3200+ speeds stable your getting something for nothing. But not all 2500+ chips are 3200+ chips. Some are 3200+ chips that failed to run at a 3200+ speed. So they drop their speed and sell them on for less. Or it could be a 3200+ that has been dropped as the demand is very high at that point for 2500+ chips.

Second part.

With Duel DDR boards you have different Speeds for the different components.

I.e

Processor = 1.83Ghz
FSB = 333Mhz
Memory channel = 400Mhz

You can manually a just the clock speeds so that the memory can run at full 200Mhz, while your FSB runs slower. Now I hear you ask "whats the point of that?"
Well one point is that he can run his memory at the full 200Mhz and see if its the memory thats not managing the full PC3200 Spec.

If it can run at 200Mhz then its is chip thats not capable of running at 200Mhz.

[Defiant]

I think he means run the cpu and ram out of sync not 1:1. so that the cpu runs at 166 fsb but the ram runs at 200mhz.I prefer to stick to 1:1 myself.
will the cpu do 12 or 13x166 as this is about 2gig!? see if it works.

He says that his CPU is locked, I think he means Multiplier locked. no???

Anyway m8 you have got it in one, run them out of sync to see if the memory can handle the full PC 3200 spec.

That way he can find out i his CPU or memory is maxed out.

[CrapshoT]

He says that his CPU is locked, I think he means Multiplier locked. no???

DOH!!!! Sometimes I just suprise myself with just how stupid i can be and thats without practicing as well !!!

[GreenPiggy]

Jonny, didn't I tell you that in the last thread you made. Run the RAM asynch with the processor and that'll tell you if its the RAM or not. That would still be by far my number one suspect.
The vast vast majority of Bartons will run at 200FSB whether they are labelled as 2500+ or not

Either way - YOU NEED TO CHECK YOUR RAM

[bigjonnyauk]

@green piggy i have been running my memory in sync with the fsb of the processer all the time i set it to 100 per cent it comes up in the bios as 190 frequency which is the same as my processer

the only thing i have noticed is when i set the cpu to 200fsb and the mem to spd it says 200 frequency then i run prime and it fails so i reboot go back into bios and the frequency now shows as 228mhz ?????


i am gonna try running the cpu at stock 166 and memory at 200 will report back in a bit so settings will be cpu=166 mem=spd=200


also as someone says up there the corsair is cas 3 the one i have is a matched pair and says cas 2.5

[bigjonnyauk]

Field Value
Memory Module Properties
Module Name Corsair VS256MB400
Serial Number None
Module Size 256 MB (1 rows, 4 banks)
Module Type Unbuffered
Memory Type DDR SDRAM
Memory Speed PC3200 (200 MHz)
Module Width 64 bit
Module Voltage SSTL 2.5
Error Detection Method None
Refresh Rate Reduced (7.8 us), Self-Refresh
Highest CAS Latency 2.5 (5.0 ns @ 200 MHz)

Memory Module Features
Early RAS# Precharge Not Supported
Auto-Precharge Not Supported
Precharge All Not Supported
Write1/Read Burst Not Supported
Buffered Address/Control Inputs Not Supported
Registered Address/Control Inputs Not Supported
On-Card PLL (Clock) Not Supported
Buffered DQMB Inputs Not Supported
Registered DQMB Inputs Not Supported
Differential Clock Input Supported
Redundant Row Address Not Supported

Memory Module Manufacturer
Company Name Corsair Memory, Inc.
Product Information http://www.corsairmicro.com/main/products.htm

[GreenPiggy]

hmm....the value select stuff I used to have was Cas3. Never mind. try running it at Cas3 anyway, if it works then at least you can send the RAM back.