athlon x2 black edition, & memory dividers.

[Apokalipse]

Well personally I'd go for a new board, with at least 5 chokes on it.
790GX + SB750 boards can be had for a good price (SB750 helps when overclocking Phenom CPU's)

 

[RichM499]

whats a choke?,

and i'll start looking at 790FX boards in a week or two

 

[Apokalipse]

the chokes are shown in red squares

They're basically passive components that resist sudden changes in current flow, to make the power flow smoother.

 

[RichM499]

right,

Well its safe to say that this is an excellent motherboard for the money, no doubt about that.

It does what its designed to do, and it does it well.

However- seeing as how im an overclock minded consumer, i believe it may have been a poor purchase.

I am looking at the Biostar 790gx board for 99$ on newegg.

But honestly i may end up getting the XFX 790gx board from tigerdirect for 30~$ more, because it looks like a nicer board.

 

[Apokalipse]

right,

Well its safe to say that this is an excellent motherboard for the money, no doubt about that.

It does what its designed to do, and it does it well.

However- seeing as how im an overclock minded consumer, i believe it may have been a poor purchase.

I am looking at the Biostar 790gx board for 99$ on newegg.

But honestly i may end up getting the XFX 790gx board from tigerdirect for 30~$ more, because it looks like a nicer board.

XFX 790GX?
I didn't think XFX would make anything using AMD/ATI chips

 

[RichM499]

apparently they did=) and it looks pretty


*EDIT*

no i think this is a GF 8300 board... either way it looks nice

 

[Hussein19891]

Go with 14 Multi and see if you are able to push 238 to about 250. If you can get that stable, then you should be able to beat Apoks Super PI

Whats the difference between the 790GX & 790FX price/performance wise?

Crap I double posted.

 

[RichM499]

This thread was originally intended for me to figure out the memory dividers for the Athlon x2 memory controller.

I didnt mean to turn it in to my personal benchmarking thread, and since its already out of hand i'll finish it up by posting a chart that explains the memory dividers and resulting memory speeds @ ddr2 800.

When your using DDR2 533, and DDR2 667 settings, your divider will be higher (DDR2 667 x14multi = /9 divider for example).


So here are the results.

Athlon x2 Divider chart @ ddr2 800

Multi -- FSB -- Core -- Div --Mem
10 --- 200 -- 2000 -- /5 -- 400
10.5 -- 200 -- 2100 -- /6 -- 350
11 --- 200 -- 2200 -- /6 -- 366.66~
11.5 -- 200 -- 2300 -- /6 -- 383.33~
12* -- 200 -- 2400 -- /6 -- 400
12.5 -- 200 -- 2500 -- /7 -- 357.14~
13 --- 200 -- 2600 -- /7 -- 371.42~
13.5 -- 200 -- 2700 -- /7 -- 384.71~
14* -- 200 -- 2800 -- /7 -- 400
14.5 -- 200 -- 2900 -- /8 -- 362.5
15 --- 200 -- 3000 -- /8 -- 375
15.5 -- 200 -- 3100 -- /8 -- 387.5
16* -- 200 -- 3200 -- /8 -- 400
16.5 -- 200 -- 3300 -- /9 -- 366.66~
17 --- 200 -- 3400 -- /9 -- 377.77~
17.5 -- 200 -- 3500 -- /9 -- 388.88~
18 --- 200 -- 3600 -- /9 -- 400

* = best default for FSB overclocking

The memory divider rounds up any time the multi/2 = a non whole number.

I will post my personal best overclock somtime next week, and im going to also update my original post with this chart so that maybe someone will get some benefit out of clicking on my thread.

Thanks for the help guys, apparently it was under my nose the whole time.=)

Hope it helps!

 

[Nagasama]

nice chart rich.
yep, it was under your nose but i knew with a little research using your you would figure it out. it can be pretty confusing at first.
make a thread with just the chart and title it
"Athlon x2 Divider chart @ ddr2 800"
like above and i will see if we can get it stickied. it is very helpful for people just starting out with AMD OCing. i had one when i had AMD chips and it was pretty useful.
i'll try and locate it so we can add ddr2 533 and ddr2 667 speeds to it as well, although they are not as common now as 800.
BTW, i got really good results with a 10x multi, but i had an EVGA 590sli that was a monster overclocker and a great mobo.