Lets talk breaking the HTT 230 limit on k10 here

[lukija]

Tictac may have our answer:

So i may be out by 1 in my original tables but thats easy to sort out

What about NbDid?

NB Speed = 200 MHz * [ (NbFid + 4) / ( 2 ^ NbDid)]

When NbDid is 0 Nb Speed = 200 MHz * (NbFid + 4)
When NbDid is 1 Nb Speed = 200 MHz * (NbFid + 4) / 2 <- Half multis?

This whole thing reminds me of good all days when K8 appeared. Only that time it was MemClk and famous Oskar Wu's memory ratio table

[KTE]

What about NbDid?

NB Speed = 200 MHz * [ (NbFid + 4) / ( 2 ^ NbDid)]

When NbDid is 0 Nb Speed = 200 MHz * (NbFid + 4)
When NbDid is 1 Nb Speed = 200 MHz * (NbFid + 4) / 2 <- Half multis?

Which BIOS/MB are you talking about here? This isn't how it works on mine (K9A2). Plus those values only work if you set the same or lower CPU multi than stock and leave NB multi to below 9x or it downclocks everything to adjust NB speed to around 2GHz.

Like mine here now (CPU-Z reads what it should be, but reports wrong values):




Also macci: setting 28 for CPU VID gives 1.2000V rather than 1.250V.

[lukija]

Which BIOS/MB are you talking about here? This isn't how it works on mine (K9A2). Plus those values only work if you set the same or lower CPU multi than stock and leave NB multi to below 9x or it downclocks everything to adjust NB speed to around 2GHz.

I guess this is how mobo makers implement multipliers. Actually final multiplier that you see in BIOS setup, AOD ..... is calculated using CpuFid and CpuDid (NbFid and NbDid). AMD BKDG explains some math how to calculate COF (calculated operating frequency). In short:

CPU Speed = 100 MHz * (CpuFid + 16) / (2 ^ CpuDid) or
200 Mhz * (CpuFid + 16) / [2*(2 ^ CpuDid)]

NB Speed = 200 MHz * (NbFid + 4) / (2 ^ NbDid)

^ - power functions: 2 ^ 0 = 1, 2 ^ 1 = 2, 2 ^ 2 = 4, 2 ^ 3 = 8 .....
200 MHz should be default reference clock
When you increase CpuDid and NbDid , final multiplier is lower 2,4,8,16 times ...

Please try this

http://www.xtremesystems.org/forums/...4&postcount=29

[Tony]

I guess this is how mobo makers implement multipliers. Actually final multiplier that you see in BIOS setup, AOD ..... is calculated using CpuFid and CpuDid (NbFid and NbDid). AMD BKDG explains some math how to calculate COF (calculated operating frequency). In short:

CPU Speed = 100 MHz * (CpuFid + 16) / (2 ^ CpuDid) or
200 Mhz * (CpuFid + 16) / [2*(2 ^ CpuDid)]

NB Speed = 200 MHz * (NbFid + 4) / (2 ^ NbDid)

^ - power functions: 2 ^ 0 = 1, 2 ^ 1 = 2, 2 ^ 2 = 4, 2 ^ 3 = 8 .....
200 MHz should be default reference clock
When you increase CpuDid and NbDid , final multiplier is lower 2,4,8,16 times ...

Please try this

http://www.xtremesystems.org/forums/...4&postcount=29

I changed the NB multi's...you were right, sorry i did not get back and thank you for an awesome tool that makes life that little easier.

[Tony]

new beta bios from DFI, its passed internal testing but at time of posting I have not flashed it.

As usual test at your own risk...its beta

Db30 bios for DFI 790fx

[KTE]

I guess this is how mobo makers implement multipliers. Actually final multiplier that you see in BIOS setup, AOD ..... is calculated using CpuFid and CpuDid (NbFid and NbDid). AMD BKDG explains some math how to calculate COF (calculated operating frequency). In short:

CPU Speed = 100 MHz * (CpuFid + 16) / (2 ^ CpuDid) or
200 Mhz * (CpuFid + 16) / [2*(2 ^ CpuDid)]

NB Speed = 200 MHz * (NbFid + 4) / (2 ^ NbDid)

^ - power functions: 2 ^ 0 = 1, 2 ^ 1 = 2, 2 ^ 2 = 4, 2 ^ 3 = 8 .....
200 MHz should be default reference clock
When you increase CpuDid and NbDid , final multiplier is lower 2,4,8,16 times ...

Please try this

http://www.xtremesystems.org/forums/...4&postcount=29

lukija, thanks. You have the values mapped out incorrectly for my board according to my system. My board is MSI K9A2.

These are the settings I chose in AM2+ P-States:

I chose BIOS NB multi 12x (07), CPU multi 11x (06), HT multi 9x, HT ref. 218.
I chose NB DID 1 and CPU DID 1.
I chose NB VID 36 and CPU VID 28.

This is what your tool calculates and CPU-Z shows what it should have calculated:



You have NB DID and CPU DID values wrongly. There is no 0 value there, there is only 1 and 2 a maccci said. 1 stands for 1 and 2 for, you guessed it, 2. That's the end of the equation.

HT ref x (NB FID / NB DID) = NB speed

HT ref x (CPU FID / CPU DID) = CPU speed

NB DID options = 1 and 2
CPU DID options = 1, 2, 4, 8 and 16 (IIRC)

That's how my system is calculating speeds. NB speed is worked out exactly as your formula described but CPU speed is worked out exactly like that too.

Hope it helps.

[lukija]

KTE, i found these formulas in AMD documentation. I didn't invent them I just put them in program One thing also: CpuFid and NbFid are not the same as Cpu multi and Nb multi. Combination of CpuFid and CpuDid gives you Cpu multiplier. Same goes for NB.

Currently I'm at work, after I return home we will check it out using WPCREDIT

[Tony]

What about NbDid?

NB Speed = 200 MHz * [ (NbFid + 4) / ( 2 ^ NbDid)]

When NbDid is 0 Nb Speed = 200 MHz * (NbFid + 4)
When NbDid is 1 Nb Speed = 200 MHz * (NbFid + 4) / 2 <- Half multis?

This whole thing reminds me of good all days when K8 appeared. Only that time it was MemClk and famous Oskar Wu's memory ratio table

I mentioned there are 2 DID's 1 and 2, thing is i did not fully mention what they do...sorry.

Its now very easy to see these boards work in a whole different way with k10 , with K8 they are awesome clockers but you can not compare a K8 OC to a K10 OC on the same board

[mAJORD]

Wow super pi takes a huge hit with the low NB clock