Would this setup stay stable?

Hey, I currently have an AMD Sempron 2500+ running at 1.75Ghz. This is with a fixed multiplyer of 10.5 and a FSB of 166Mhz. (This is all standard with no current OC) I can change the jumpers on my motherboard and set a FSB or either 133, 166 or 200 Mhz. By setting the FSB to 200Mhz I understand that I will then be running at an improved 2.1Ghz.

Now my question, I still have the stock heatsink+fan installed in my system and temps idle around 45C and hit 55C at max load. If I was to do this FSB change would my temps increase dramatically? Or would I just be within safe opperating temps?

Also by increasing the FSB I seem to recall that by doing this I am also altering the speeds of my memory and PCI/AGP slots. Is this anything to worry about as I have no cooling methods for either my 2 sticks of ram or my Gfx card which only has a small heatsink with no fan.

I believe my current memory sticks are:
PC 2700 256MB
PC 3200 265MB

Please ask if any aditional info is required. Cheers

 

i think that you should probably get a new heatsink if you want to oc. I recommend zalman... ummm... ocing rises temps so i would prob get a new heatsink and some artic silver 5... but i would also wait for ace to put in his opinion

 

Ok i need details. Stock voltage, max temperature@stock speed/voltage, stock FSB speed, what mobo you are running and what your max CPU V and Vdimm are. If the sempron you have is based on the Tbred core ( 256 L2 ) it should do over 2.2Ghz+ @ ~1.75 Vcore. Oh and did you read the overclocking guide ?

 

Yep I sure did read your OCing guide and found it extremely useful if i may say so. Now then back to my problem. I'm not 100% sure on where to look for some of these details. My stock FSB is 166Mhz, Everest tells me that my motherboard is "MSI KM3M-V" however, when i google this it comes up with an indentical looking mb but it has at to 333Mhz FSB and mine is only 200Mhz max.

My sempron is indeed based on the thoroughbred-b core with 256 L2 cache. As for the voltages I'm not sure exactly how to find this information, I'm probably just looking in the wrong places, could you give me a point in the right direction please?

 

Update: I just checked in Everest again and found a couple of voltages, not sure if they help at all but here they are:

Voltage Values
CPU Core 1.57 V
+3.3 V 3.22 V
+5 V 5.08 V
+12 V 11.73 V
-12 V -12.69 V
-5 V -5.20 V
+5 V Standby 4.95 V
VBAT Battery 3.30 V
Debug Info F 24 3B FF
Debug Info T 22 44 255
Debug Info V 62 00 C9 BD C1 1B 32 (01)

 

Your +12v is a bit low and stock for a Tbred is ~1.65V not the 1.57 you have. My old Tbred did 2Ghz @ 1.65v, 2.2 @ 1.7v, and 2.333 @ 1.75v. 200 in the bios is 400DDR

 

Hmm I see, but back to my orininal question. If i set my FSB to 200Mhz what sort of temperatue increase will I be looking at?

 

just a precaution,
i am using an AMD Athlon 2600+

when i jumped from 166mhz to 200mhz right away my whole comp failed, it wouldnt boot and i had to pull the system battery so it would reset my Bios,
i found that i had to gradualy increase in small increments untill i found a stable setting,

just giving you a warning

 

Extra heat comes form overvolting not overclocking alone (generaly). You most likely will not get 200FSB @ the 1.57 Vcore your running now...

 

I see, so how exactly can I "Overvolt"? Ive got a feeling I may not be able to so this with my motherboard If I was to overvault what sort of temp increase will I have?

 

If your 15yo as your sig sais id hold off on overvolting or on overclocking in generel. no offince. List your full specs and i will see what i can do to get more speed out of it as safely as possable ... You mainly play games on it i assume?

 

Hmm, well I do play games, but thats not what I do most. Most of the time I'm coding little applications etc.. I should be ok with overclcocking, althought I'm only 15 I know a fair bit about computers. I'll post my current specs:

CPU - AMD Sempron 2500+, 1.75Ghz
MB - MSI KM3M-V
RAM 1 - PC 3200 256MB
RAM 2 - PC 2700 265MB
Gfx Card - Radeon 9250 256MB AGP
HDD - Maxtor 200GB
PSU - 400W

As if you require more info

 

Well the core should to 2Ghz fine @ 1.65~1.75 v.... so 200 x 10 ....Is your chip locked ?

 

Yes im afraid it is Multiplyer is fixed at 10.5. I know I can get 2100Mhz if i set FSB to 200, but as you said, my system probably wouldn;t handle that on stock voltages

 

2.1Ghz should be fine @ 1.7~1.75v that is if you can change the core V....My Tbred is at 2.25 @ 1.8 V now....

 

There is what will limit you.

By being slower, it is pulling the PC3200 you have down to 2700 Speeds. Your 3200 is fine, and will likely reach a Speed of 215-220 with ease in BIOS. The 2700 will be lucky to reach 200.

For that reason, I'd say before Overclocking, either get yourself a new stick of PC3200 to replace the 2700, or accept the fact that you will be very limited in you OC until you do upgrade that 1 stick o'ram.

 

If you get errors @ 200 try running looser timings.. Most 2700 will do 3200 at stock timings ( though thay might need a bit of extra voltage ). What are your stock timings ???

 

SPD Memory Modules
DIMM1: Micron Tech. 8VDDT3264AG-335GB 256 MB PC2700 DDR SDRAM (2.5-3-3-7 @ 166 MHz) (2.0-3-3-6 @ 133 MHz)
DIMM2: Micron Tech. 8VDDT3264AG-40BGB 256 MB PC3200 DDR SDRAM (3.0-3-3-8 @ 200 MHz) (2.5-3-3-7 @ 166 MHz) (2.0-2-2-6 @ 133 MHz)

Theres a few timings coppied straight from Everest. I'm still unsure exactly how to Overvolt the Core V

 

@ 200 run 3 3 3 8 stock on the 3200 and you have realy good odds that the 2700 will run that too.. as for uping the V core the vCPU is prolly under frequancy/voltage in the bios...

 

Aww man I seem to rember them being greyed out and uneditable

 

You prolly half to set an option to "expert" or
"manual" to get the timings and voltage options...

 

Update: I just checked BIOS and I can't seem to find where abouts I can change the VCore voltage. I can change the DRAM Clock, DRAM Timing, DRAM Burst Lenght and DRAM Command Rate but thats all I can find.

 

Can you get pics of your bios screens ??

 

Erm.. I suppose I can try yeh, They might not come out very clear but wortha try

Well, I'll report back tomorrow I've got an exam in the morning and my parents are bugging me to go to bed... Damn them

 

Well my camera doesn't like me at themoment so I can't get any pictures on the bios, What is it you wanted to see? I'll write it out for you

 

hmm... easiest thing you could do first is to tell us what type of BIOS you are running and what version. THen those of us with similar BIOS's could tell you where to scrounge around at.

 

Sure, This is my BIOS version copied from Everest

BIOS Properties
BIOS Type Award
Award BIOS Type Phoenix - AwardBIOS v6.00PG
Award BIOS Message W7061VMS V1.4 021605 09:57:09
System BIOS Date 02/16/05
Video BIOS Date 04/08/16

 

Ok.... go to the right hand column of your BIOS. This is where a lot of what you need to pay attention to is at. There will likely be 1 or 2 menus there. One of them will let you set FSB/HTT and multipliers, and voltages. The other is likely for your RAM timings. If there is no RAM timings tab on the right, it will be on the left, in one of the 2 menus halfway down.

 

Hmm, This doesn't seem to match my BIOS at all to be honest Plus I can't change the FSB or Multiplyer in my bios. Is there nay other way of changingvoltages apart from in the bios?

 

How about writing down the menus ?......

 

Ok then, I'll write my entire BIOS because I'm weird like that

 

Whatever works .....All i need now are the menu titles and i should be able to tell what settings are where...

 

Well.. I decided not to copy my entire BIOS because I actually have a life...

I have only copied down the 2 menus which have anything that may relate to this topic. (The ones In Itallic Are fixed and un-editable)

Advanced Chipset Features
- DRAM Clock/Drive Control
Current FSB Frequency - 166Mhz
DRAM Clock - By SPD
DRAM Timing - Auto By SPD
DRAM Cas Latency - 2.5
Bank Interlace - Disabled
Precharge to active(Trp) - 5T
Tras Non-DDR400/DDR400 - 7T/10T
Active to CMD(Trcd) - 5T
DRAM Burst Length - 4
DRAM Command Rate - 2T Command
- AGP & P&P Bridge Control
AGP Aperature Size - 128M (Should that be 265M? I do have 256M Gfx card)
AGP Mode - 8x
AGP Driving Control - Auto
AGP Driving Value - DA
AGP Fast Write - Disabled
AGP 3.0 Calibration Cycle - Enabled
VGA Chare Memory Size - 64M

Frequency/Voltage Control
Auto Detect DIMM/PCI CLK - Enabled
Soread Spectrum - Enabled


Please ask If you want more, but that's all I could find which seemed to have a relationship with this topic

 

Ok Disable spread spectrum on all busses....
Set " DRAM Clock" to 166....
set " DRAM Timing" to manual or expert....
Are you running onboard video ??

 

Hey I'll give that a try , Nope I'm running a Radeon 9250 256 Meg.

 

How mutch system ram do you have ??
Your running 512MB ram right
if so AGP Aperature Size to 128MB....
My rule of thumb is AGP Aperature Size = 25% of system ram.....

 

Update: Just done as you said and now all the DRAMClock/ Drive Control Section is fully editable Does this help at all?

Also shall I just keep my Aperature size as 128? Will changing to 256 Make much of a difference?

 

Nope keep it at 128.....
Do you have core voltage any ware ??
What settings are unlocked now ??

 

Hmm, I still can't seem to find Core voltage anywhere. The only place I can find it is in the "PC Health" Section of my bios but it's a monitor rather than something you can edit .. Any other ideas?

Edit: Oh hang on, I've forgotten to disable "Spread Spectrum" Like you suggestsed.. I'll do that now, Brb!

 

Are thare any jumpers or dip switches on the mobo ???

 

Ok, Thats all done now, Still can't find anything to do with core voltage

Yup theres jumpers for switching the FSB but not sure if there are any for the voltages

 

Yur going to make me DL the manual arnt you ? ....Damn i hate .PDF files a 4MB text file that whould only be 300K in .txt ....

 

I dont see voltage controle as an option.. So your prolly out of luck.... You can try clockgen thow..and you can always tighten your ram timings a bit...

 

Ahh ok then, cheers for all you'r help and time you've been great!

 

let us know what you get the OC up to as stable!

 

I sure will, First I think I'm going to invest in a new heatsink + fan though to keep my temps as low as possible

 

If your not overvolting temps normaly raise very little ( if at all ) with an overclock ....

 

Heh, Well I'm thinking of just going for it and just seeing what switching to 200 FSB will do. Wish me luck ... Just hope the worst doesn't occur as I can't afford a new system!

 

Update: Well I went for it... but with no success I'm pretty sure that it can't handle the faster speed on the stock voltages. When I start up the system it all begins to load fine until about 2 - 3 seconds into loading windows xp and then then re-boots itself I think I saw the BSOD flash up for a flash aswell... Any idea on why it's doing this or how to fix it?

However It only happens when I'm loading xp. I can leave it running on the bios for ages.. This has confused me slightly

 

Ok, I've managed to change the DRAM Clock to 200Mhz and everything seems to be stable, will there be any noticeable difference from the 166Mhz it was originally? Also, is there any chance of memory overheat?