A64Info - New CPU ID and memory tweaking tool! - feedback welcome...

[lukija]

Sorry, I'm not planing any changes ATM. I'm out of spare time. If I find some, maybe I will write AM2 version.

[neo2005th]

not work on my win2003

[m411b]

Awwww, common lukija, write the AM2 version please, pretty please ..

[RafaDel]

lukija

Even after this long time you released this utility I tell you that it is the best online overclock application, ever!

Thanks a lot!

[by -=Merlin=-]

very good programm ! Thanks lukija

[pcfreak]

-=Merlin=-
what modification did you do?

[papatsonis]

except from renaming the .exe ... i cant see any other modification.. it still doesnt work correctly with my AM2 (brisbane) in WinXP64

[pcfreak]

except from renaming the .exe ... i cant see any other modification.. it still doesnt work correctly with my AM2 (brisbane) in WinXP64

check "about" tab for one more
"Modification: by Merlin"

[papatsonis]

hehe my bad :p

[SuperStarr]

Awwww, common lukija, write the AM2 version please, pretty please ..

Common lukija, I can't overclock on budget boards without A64Info...
If you wrote AM2 version, please add "add to startup" option in program just like on A64Infobeta version. Can You do that?

[cbjaust]

@Nick@crete: You cannot make custom divider just like that. AMD has integrated memory controller and memory speed is obtained by dividing CPU speed with some integer value. That integer value is controlled via memclk frequency bits ( originally only 2 bits thus 4 dividers available - 200,166,133 and 100). But there is another undocumented bit so with 3 bits you can have 8 dividers: 200,183,166,150,143,133,120,100). Newer revisions have one more bit (or maybe 2?) but only couple of them are known (217,233,250).

I don't think that the dividers are based on the traditional frequencies that were based on the ratio of the standard PCI frequency (33.3MHz) to the FSB as was the case in socket A.

I think that the memory divider ratio is decimal and works in increments of 0.1:

Divider Frequency | Ratio | Decimal Ratio
200.000 | 1 | 1.0
181.818 | 10/11 | 1.1
166.667 | 5/6 | 1.2
153.846 | 10/13 | 1.3
142.857 | 5/7 | 1.4
133.333 | 2/3 | 1.5
125.000 | 5/8 | 1.6
100.000 | 1/2 | 2.0

I work out the Memory Frequency by (ABIT terminology): (External Clock x Multiplier Factor) / (Multiplier Factor x Reference Frequency / DRAM Clock) with the reference frequency always 200MHz. The reference frequency part is simply the decimal ratio and the DRAM frequency is simply calculated by dividing 200 (the ref frequency) by the ratio (fraction or decimal).

Obviously the Memory divider is always rounded up the the next higher integer.

In the case of the 4x Multiplier Factor at a DRAM Frequency of 200 the A64 controller I think defaults to it lowest divider of 5 so you can never get DDR400 at standard clocks with a 800MHz CPU (this affects AM2 x8 Multiplier CPUs more I think).

For example Gogar says in his table at http://math.gogar.com/athlon64.cgi?htt=200&showtable=1 and thread at http://www.xtremesystems.org/forums/...ad.php?t=61939 that some values don't come out as expected, and he highlights them in red. For example 11x200 on his 11/12 ratio (or 183.33 divider) is highlighted and the resulting memory frequency of 169.231 doesn't come out as expected from his calculations, howver 169.231MHz is what you get when you work out memory frequency using memory dividers based on decimal ratios.

I'm sure it's just a mislabelling of the extra ratios in the BIOS that are available on some boards that causes the confusion.

With AM2 it is more tricky because I think the memory divider is based on: CPU multiplier/2 (rounded to the next higher integer) x Ratio (and again rounded to the next higher integer)

Anyway my $0.02.

Cheers

[OCPerformance]

Hallo, i've got a problem. I can't overclock on my Socket 939 DFI NF3 Ultra-D, can you add the clockgenerator Socket NF3 Ultra. In my german forum a lot of people with nf3 Board please add them.

[PhilDoc]

Has anyone got this to run on Vista 64bit. I've been through the thread and I think I've downloaded all the betas, but it still give me a unable to load driver error. I love the program

[PhilDoc]

Never mind, I found the problem. Had to disable signiture checking. Thanks

[Repoman]

very good programm ! Thanks lukija

This version immediately blue-screened my computer. All others work fine.

Does anyone have 0.62 beta on their computer? If so could you upload it.. the original download link is dead and I formatted

[lukija]

Here you go:

http://rapidshare.com/files/70612015...-beta.exe.html

[Esticbo]

This version immediately blue-screened my computer. All others work fine.

Does anyone have 0.62 beta on their computer? If so could you upload it.. the original download link is dead and I formatted

This is the 0.5 beta:

http://rapidshare.com/files/70612629/A64Info.rar.html

and this is the 0.6 beta:

http://rapidshare.com/files/70612984...-beta.zip.html

[OCPerformance]

Hallo, i've got a problem. I can't overclock on my Socket 939 DFI NF3 Ultra-D, can you add the clockgenerator Socket NF3 Ultra. In my german forum a lot of people with nf3 Board needed, please add them.

Please help. is it possible ?

[lukija]

I have tried once but lack of any documentation regarding nf3 chipset is a problem.

[OCPerformance]

Is it a help ? I have the old Nf3 Clockgen . Can you use this clockgenrator ?

[zungkono]

got problem (restart) using a64info 0.62 but, then i use a64info 0.62 mod by merlin, just fine

mainboard AMD DFI nF4 Ultra-D + A64 3200+

[lukija]

Is it a help ? I have the old Nf3 Clockgen . Can you use this clockgenrator ?

I can't. I have to know which registers are responsible for setting clock generator. That means I must have some kind of documentation. For programming A64Info (memory setting tab ) I have used documentation found on AMD site.

[lukija]

got problem (restart) using a64info 0.62 but, then i use a64info 0.62 mod by merlin, just fine

mainboard AMD DFI nF4 Ultra-D + A64 3200+

Strange. Someone correct me if I'm wrong, Merlin just tweaked program layout, that means nothing was touched regarding functionality.


Just to make it clear, I have stopped developing this tool since I'm still using S939 system + nF4 board. AM2 is not supported , but after seeing AMD released overdrive tool I think there should be no problem for AMD fans in the future. I must say it was fun programming this tool, and the feedback/support received from you ppl was great. Thank you guys for everything.

P.S. Life goes on. I'm in a process of switching to Intel as soon as affordable 45nm CPUs come. It will be a challenge to make a similar tool for Intel.

[OCPerformance]

Hm. Is it possible to read out with a programm ? SO i can help you with some infos.

[lukija]

I have already tried that last year.