[daweinah]

Where did I see what one, kitt?

Thanks Mang, how do I check my card temps?

I also just experienced my first instance of noticable problems OCing the vid card, I had it at 500/1250 and during the first test of 3DMark05 the screen had a bunch of red patches of lines, and the desktop had red and blue dots spaced out in squares.

What order should I OC the 3 parts (cpu, gpu, ram) in? How do I know when to stop OCing a certain part? ie how can I find my limits, and are the speeds of all the parts interdependent on each other? Or is this the sadistic fun of OCing? /evilgrin

Now that I have my FSB at 250, is it advisable to raise it higher? Doing so would drop.. uh, whatever FSB*HTT is called, to 800 something.

Lastly, I upped the proc to 250x11 (=2750) and it is running 3DMark05 just fine at the moment. I'm thinking this is where I should stop with the CPU and move on to the sweetspot on the GPU, and then try and tighten the RAM timings?

EDIT: Oh, and with the memory divider, why do people suggest changing it to low speeds?

 

[daweinah]

Quote:

Originally Posted by z_one Your have DDR ram (Double Data Rate) which means your ram transmits datal on both edges of the signal. So if your ram speed is 400 MHz it means it's originally working at 400/2 = 200 MHz. When you go over 200 MHz you are exceeding your ram's capacities.

So I'm definitely over 200 MHz, are there any warning signs I should watch out for, or a way to test the RAM's capability to handle a 250MHz FSB?

Quote:

Originally Posted by z_one As I said before you have DDR ram so when the original speed is 238.6 MHz it means your ram is transmitting data at 238.6 MHz x 2 - 477.2 MHz (thus the numbers you see above).

If the original speed is DDR477, why was it manufacture rated DDR400? And why are my stock timings so much looser than they are supposed to be?

Quote:

Originally Posted by z_one While on Intel based systems it's always best to have FSB speed match RAM speed (FSB:RAM = 1:1) this is not entirely true on AMD based systems. On AMD systems it's better to keep your ram running on tight timings even if that means you have to set a divider because ram cannot keep up with the ever increasing FSB speed.

Should I reset the CPU and GPU back to stock speeds, set the ram to DDR400 1T/2-3-3-6 like its rated for, and start OCing the CPU and GPU from there? What happens when the computer doesn't like the settings I put?

Quote:

Originally Posted by z_one I assume it's because you took your ram higher than 200 MHz and thus it had to relax the timings to be able to run at higher clock speeds. Try upping the voltage supplied to your ram modules a notch and see if you can run them at 3-3-3-8 with speeds such as 240 MHz.

I was thinking the same thing, since the speed was set to Auto.

 

[daweinah]

Here's some links:

Processor: Opteron 148 Venus, not sure what stepping, doh!
Motherboard: EPoX EP-9NPA+Ultra
Video Card: 256mb eVGA N517-AX Geforce 7800GT
Memory: CORSAIR XMS Twinx2048-3200c2
Hard Drive: WD2500KS 250GB 7200 RPM 16MB cache