Tom's Hardware > Forum > Overclocking > AMD > Desperate cry for help
Ask the community Add a reply
Word :    Username :           
 
aergistal   05-12-2006 at 09:50:33 AM

:cry: Hi guys. Need a hand for help here. I have a AMD 3000+ (Venice) running on a m/b MSI K8T Neo 2F. I don't know too much about computers, so please bear with my ignorance. I need to know how to OC it. Firstly, from BIOS the max FSB is 232 MHZ for a x9 multiplier.
Q1. From where I can decrease the mutiplier
Q2. From where I change the RAM ratio?
Q3. The same for RAM divider

My system
CPU: AMD 3000+ (1800 MHz)
M/B: MSI K8T Neo 2F
Memory: 2 GB (Corsaire Value + Legend)
Video: ASUS 5200 gForce
Audio: Audigy XFi
HD: 2 x 200 GB

Thank you in anticipation 8O

Add a reply
Sponsored Links
Register or log in to remove.
mitch074   05-12-2006 at 10:46:34 AM
- 0 +

- most Athlons have a locked multiplier
- changing the RAM ratio has an instant performance impact of 10% of raw performance compared to sync'ed CPU/RAM ratio, relax the RAM timings instead
- the RAM divider is the same as the RAM ratio

In short, set up lax timings (3-4-4-8) for the RAM, and push your FSB little by little. Don't touch the rest for now.

Reply to mitch074
aergistal   05-12-2006 at 10:56:10 AM
- 0 +

Thank you. :) Is that bad news? :?: I have seen in various forums as the same proc was OC up to 2.5 GHz.
In my case I can increase the FSB from BIOS between 200 and 232 (which is max). I did it without changing anything else and the new speed is 2088. It is stable and the temperatures low. But from here?
I shall try the new mem settings

A 8O

Reply to aergistal
mitch074   05-12-2006 at 11:02:44 AM
- 0 +

232 is the max setting your motherboard allows, or is it the most stable setting you have?

If it is the first, be happy with it and leave it at that. If it is the second, you have to be sure that it is indeed the RAM that's keeping you down. It could also be the CPU voltage getting too low for its frequency

BEFORE YOU DAB IN VOLTAGES, BE SURE YOUR RAM IS UP TO THE TASK!

For example, try keeping only the Corsair RAM, relax its settings a bit, and keep pushing the FSB.

Reply to mitch074
aergistal   05-12-2006 at 03:08:51 PM
- 0 +

232 is the max I can adjust to on the BIOS. However (sorry for my ignorance), this value can be changed from other settings (for example I see on one of the settings in the BIOS a string of points in MHZ, ranging from 400 to 1000 MHz. Currently my PC is on AUTO on that setting). I wonder how so many others manage to OC theirs with similar hardware. For example, 313 x 7 or 243.5 x 9 or, etc.

From the little I gathered from the net, there are some equations as follows:
1. CPU = FSB x Multiplier
2. RAM = FSB / RAM ratio => FSB = RAM x RAM ratio
3. RAM divider = FSB multiplier / RAM ratio
4. RAM = CPU / RAM divider

The above is a redundant system, in other words there are more eq than unknowns, but the redundancy caters for RAM capabilities. From there one can see that FSB is a function of RAM x Multiplier / RAM ratio, or FSB is function of RAM / RAM divider. My question is if the last ratio changes in BIOS, will automantically change the span I can adjust the the FSB? Currently it is between 200 (default) and 232.

Thank you and waiting..... :roll:

Reply to aergistal
mitch074   05-12-2006 at 05:32:21 PM
- 0 +

no - the RAM setting follows the running FSB frequency. If your motherboard offers you a ratio, it is almost certain that on a 232 MHz frequency with a FSB/RAM ratio of 2/1, the RAM will run at 116 MHz.

Sometimes, your motherboard does modify the 'base' FSB by using the memory clock as reference, and a fixed ratio: raising the RAM bus speed and decreasing the FSB/RAM ratio will raise the actual base FSB; then, your 32 MHz of available adjustment would turn from 200-232 to 266-298.

Experiment with that... use CPU-Z to see settings actually applied by your motherboard when you tinker with it.

The 400...1000 MHz is the Hypertransport bus. If you're tinkering with your bus speeds, consider setting it to 800 MHz to remain on the safe side (setting it to 1000 makes sense on a non-overclocked system, but has little impact as of now, and is harmful on some o/c'ed systems)

Reply to mitch074
aergistal   05-15-2006 at 11:32:44 AM
- 0 +

:o Hello Mitch. Hope you had a good w/end. Thank you for the reply. I tried (over the w/end) to fiddle with Clock Gen. Got amazing speeds. Unfortunately, that's only a software. Regarding your suggestion. I can change the frequencies (...166, 200, 216,...). The ratio is 2T (I presume that is 2:1). From where exactly can I change the RAM speed, and RAM ratio?
I am pretty sure that many things can be done as with CG... but the know how...
8O

Reply to aergistal
mitch074   05-15-2006 at 06:51:01 PM
- 0 +

ClockGen overclocks your system LIVE - it can allow you to push clock speeds higher than what your BIOS allows you.

2T is not a ratio, it is the number of cycles used for bank addressing. Putting it at 2T slows down the system by 10%, and is only used if you fill most or all your RAM slots.

Reply to mitch074
Ask the community Add a reply
Tom's Hardware > Forum > Overclocking > AMD > Desperate cry for help
Go to:

There are 1259 identified and unidentified users. To see the list of identified users, Click here.

Forum map
Bestofmedia Forum ©
2000-2009 Bestofmedia Group
Page generated in 0.428 seconds
Please mind

You are about to answer a thread that has been inactive for more than 6 months.
If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.

Add a reply Cancel
Sponsored links
  • Ask the community now
  • Publish
Ad
Related Topics
See all relatives topics
They won a badge
Join us in greeting them
How do I win badges?