Overclock = (((RDX200 + PC4000) * X2 4400) * X1800XT)

[Mysterae]

Not sure the equation works ;)

The components in more detail are:
DFI RDX200 Crossfire motherboard
Crucial Ballistix PC4000 2x1GB ram
AMD X2 4400 cpu
Sapphire X1800XT 512MB gpu
WD Raptor 74GB non-raid hard drive
Tagan TG580 580W psu

There are a few threads splintered around with people with these components, so I thought I would bring it here as it is regarding overclocking everything!

I've been tinkering with the overclock of these components for a few days, to see what I can get out of it before it's watercooled. But first, here it is stock, air, no adjustments: 3DMark05 - 8402

http://homepage.ntlworld.com/mysterae/pc_stuff/overclock/stock_performance.gif

This is what I managed to get it too, a 3DMark '05 score of 9327.

http://homepage.ntlworld.com/mysterae/pc_stuff/overclock/OC_9327.gif

I get really poor results if I use a memory divider, and I've been a little mean on giving it volts as it's air cooling and not in a case. The FSB just won't go 277Mhz while being 3DMark05 stable. I'm stuck!

Does anybody see any glaring mistakes as to my overclock, and have any thoughts or ideas?

[NKDietrich]

The maths.... it hurts my head :( :confused:

[kirbyrj]

Can you explain your "poor results" from using a divider? From what I've heard/experienced you don't lose that much in real world performance when running a divider.

[InorganicMatter]

Limit:
((nForce 4 SLI + PC4000)*FX-57) + (7800GTX + 512MB)*2

as:
FSB >> Infinity

[iSkylla]

Not bad for the new 3DMark '05

Just so you know you have a typo.

You said the memory stock is 7747 Mhz which is not true.

[Mysterae]

Not bad for the new 3DMark '05

Just so you know you have a typo.

You said the memory stock is 7747 Mhz which is not true.

Thanks, well spotted! refresh if it's wrong.

[Mysterae]

Can you explain your "poor results" from using a divider? From what I've heard/experienced you don't lose that much in real world performance when running a divider.

When on a 166Mz (5/6) divider, 3DMark05 isn't stable with the cpu at 2.45Ghz, and the FSB @ 245, multiplier @ x10, at the memory settings at the above. Plus my memory is way underperforming at that speed (204Mhz). Perhaps I'm not doing something right?

[Mysterae]

No further comments? Is that a good or bad overclock? Is there nothing else I can do to get it higher (other than raising the voltages and watercooling it?).

Your posts are appreciated!

[Apple740]

If you use no dividers at all, just default, how high can you bump up the HTT (FSB)? (ofcourse you'll have to add some extra Vcore/Vdimm)

Btw, increasing pci-e busspeeds, you did that? (default = 100, 110mhz should give no problems)

And what's your score then?

[R1ckCa1n]

When on a 166Mz (5/6) divider, 3DMark05 isn't stable with the cpu at 2.45Ghz, and the FSB @ 245, multiplier @ x10, at the memory settings at the above. Plus my memory is way underperforming at that speed (204Mhz). Perhaps I'm not doing something right?
I would suggest finding the max overclock with a 1:1 divider as that will net you the best performance. I could not get my OCZ 2gb set to work well with my RDX200 and have settled on my good old OCZ PC4000 VX memory as they let me run 255 x 10 1:1 with 2-2-2-5 timings.

[Mysterae]

Here's my latest overclock, 3DMark05 score of 9444.

http://homepage.ntlworld.com/mysterae/pc_stuff/overclock/OC_9444.gif

This is a right wierd board to overclock, there are many paths to take to get to the same place!

Apple, you mention raising the PCI-e bus speeds...what option is that on the DFI RDX200, I can't seem to find it.

R1ckCa1n, as you can see above that the divider is now on 1:1. I think the FSB(HTT) can go higher, but my ram is as loose as a virgin on prom night. Those 2-2-2-5 timings you mention, I presume they aren't 1Gb sticks?

Is 2.65Ghz from a X2 4400 a good overclock on air? It never seems to go above 49C load and that's still with stock AMD cooler :eek: . Okay, it does have a CM Crossflow fan blowing right across it and the memory (the memory gets very hot!).

[Mysterae]

Forgot to mention that I've flashed to the new beta bois, 11/23/05. Didn't notice any changes, but I wasn't having any of the problems others were experiencing.

[(cf)Eclipse]

When on a 166Mz (5/6) divider, 3DMark05 isn't stable with the cpu at 2.45Ghz, and the FSB @ 245, multiplier @ x10, at the memory settings at the above. Plus my memory is way underperforming at that speed (204Mhz). Perhaps I'm not doing something right?
be sure to calculate memory speed right ;)
http://eclipseoc.com/index.php?id=6

scroll down a bit to the ram setting section