WPCREDIT tweaks for the A64

[HKPolice]

What benchmark program would you recommend in windows? I would use Cachemem, but it's only accurate while in DOS only mode..

Nope, I did A LOT of runs, and variations between runs were a max of 2MB/s. (I turned everything off for each run, including LAN connections) So a 10MB/s difference is not a glitch, you should test it

I'll try the unbuffered bench right now, as well as 256 Idle

Originally posted by CodeRed
@HKPolice,

I see a couple of problem with using the sandra mem banchmark as a reference.

Firstly, 10MB/sec is only a small gain and possibly due to the variantion between runs.

Secondly, the sandra mem benchmark has a very sequential memory referencing pattern. It is very localised and greatly benefits from in-page access cycles. By enabling the dynamic idle cycle counter the mem conroller is probably prematurely invalidating pages and thus inccurring a performance hit. If this is truely the case then try disabling the dynamic idle cycle counter (the mem controller will then use a static counter algorithm) and set the Idle Cycle Counter to its max value (256 clocks). This should ensure that mem pages remain valid for as long as possible. Test it and let me know how it goes.

Thirdly, sandra sucks as a benchmarking tool It really measures the burst speed of your memory. Try it unbuffered and I am sure the results will be different.

@the.m,
Most memory with the A64 only works at either CAS2.0 or CAS2.5/3.0. Not many sticks work with both cas2.0 and cas2.5 (XMS3500C2 may be an exception here). My kingston sticks wont run anything but cas2.0 or 1.5. CAS2.5/3.0 just freezes. There may be a combination of parameters that helps out, but I dont know what that is (yet).

@EmineM,
cpulloverclock is working on a universal tweaker, so drop him a line.

[cpulloverclock]

try streamD

[jess1313]

Hey guys this is a pretty good quick mem tester & it seems to show changes real easy. It doesnt give high #s like sandra but it is very quick & responds good.

By the way code red the prog runs flawless on my rig I am on now. Shuttle SN85G4 - 3200 CG mobil. Kicked my 3D mark score up 250 points. Muskin 222.

[CodeRed]

Originally posted by jess1313
Hey guys this is a pretty good quick mem tester & it seems to show changes real easy. It doesnt give high #s like sandra but it is very quick & responds good.

By the way code red the prog runs flawless on my rig I am on now. Shuttle SN85G4 - 3200 CG mobil. Kicked my 3D mark score up 250 points. Muskin 222.

Thanks for the heads up on the test prog

Also good to hear that your 3dmark score is getting a boost ... thats what I wrote it for

[krampak]

I can't make it run in Win-64bits edition... says:
Unable to start IO.sys service. Error code = 1275
Eprivilege

[dmon]

Works great for me, Thanks. Since moving to a GB of ram I've had to run a 5:3 devider I used the 183 Memclk freq. and went from a sandra score of 2800 to 3200. (230 HTT) I gained about 500 points on my 3dmark 01. Does anyone know what devider the 183 uses? From my sandra score I'm guessing my ram is at about 210. I can't find anything to show me my ram speed.

[jayl]

use CPU-Z to show your RAM speed....

[dmon]

It blanks out the memory speed in CPU-Z when you use the tweaker.

[CodeRed]

Originally posted by dmon
Works great for me, Thanks. Since moving to a GB of ram I've had to run a 5:3 devider I used the 183 Memclk freq. and went from a sandra score of 2800 to 3200. (230 HTT) I gained about 500 points on my 3dmark 01. Does anyone know what devider the 183 uses? From my sandra score I'm guessing my ram is at about 210. I can't find anything to show me my ram speed.

Tha memory divider is given by:

mem divider = ceil(CPU Multi x 200 / mem freq)

where mem freq = 200, 183.333, 166.666, 150, or 133.333

and ceil() rounds up to the next integer value

[dmon]

Codered, You went over my head with your explanation. I figured it out a few days ago. 183/200*230 puts me at 211. Thanks again the tweaker helps my setup run noticably faster.

[cpulloverclock]

codered, look at the last post

http://219.113.251.125/c-board/c-boa...;tree=2703;id=

[Learn]

Originally posted by cpulloverclock
codered, look at the last post

http://219.113.251.125/c-board/c-boa...;tree=2703;id=

and this

http://www012.upp.so-net.ne.jp/ohij2/

[CodeRed]

I cant read japanese but I can see that the Japs have now picked up A64 Tweaker. Also saw references to A64 Tweaker on a lot of french sites

Damn, now I'll never catch them


BTW: Anyone know of a japanese to english translator?

[cpulloverclock]

Originally posted by CodeRed
I cant read japanese but I can see that the Japs have now picked up A64 Tweaker. Also saw references to A64 Tweaker on a lot of french sites

Damn, now I'll never catch them


BTW: Anyone know of a japanese to english translator?

http://world.altavista.com/

[kyosen]

Did you call me?

Many thanks to CodeRed, your tool improved my ABIT AV8
extremingly

AV8's BIOS has a problem... Trc setting in BIOS is neglected.
...If we set Trc as 7, the system wake up at 12
A64Tweaker can fix it, so now we can enjoy AV8 performance!

I strongly appreciate you, CodeRed!!!

[CodeRed]

Originally posted by kyosen
Did you call me?

Many thanks to CodeRed, your tool improved my ABIT AV8
extremingly

AV8's BIOS has a problem... Trc setting in BIOS is neglected.
...If we set Trc as 7, the system wake up at 12
A64Tweaker can fix it, so now we can enjoy AV8 performance!

I strongly appreciate you, CodeRed!!!

Glad to hear its working for you

[LikwidKool]

quick question. Alot of the timings that are in A64 tweaker seem to be in the bios of the K8NSpro. Is there any difference in using the tweaker than the bios? Guess it is just like using clockgen instead of the bios. Also is there anywhere that explains all the different timings and what they do exactly?

I am not on my A64 rig right now, but I am excited to try this app out. Thanks for the hard work!!

[CodeRed]

Originally posted by LikwidKool
quick question. Alot of the timings that are in A64 tweaker seem to be in the bios of the K8NSpro. Is there any difference in using the tweaker than the bios? Guess it is just like using clockgen instead of the bios. Also is there anywhere that explains all the different timings and what they do exactly?

I am not on my A64 rig right now, but I am excited to try this app out. Thanks for the hard work!!

There is no difference between setting the values in the BIOS or A64 tweaker. Most BIOSes arent as good as the K8Nxxxx series and dont allow for setting of all the memory parameters.

There are some extra settings that the BIOS doesnt give you control over, in particular all those under the Configuration Parameters section. Try setting the following and you will get a slight improvement over what the BIOS can give you:

Read Write Q Bypass 16x
Bypass Max 7x
Max Async Latenecy 5ns or 6ns (depends onwhat you mem can take ... lower the better)
Read preamble 4ns


A good exaplaination for all the memory timings parameters is hard to find (I am still looking). Try downloading the BIOS & kernel developers guide for the A64 (26094.pdf) from AMD. This explains some apsects of the parameters.

[LikwidKool]

thanks for responding Code Red. Tell you what. You A64Tweaker is awesome. Finally was able to try it out, and lowered my Super Pi by a second so far!!! Now at 35 sec with my 3200 at 2.5ghz.

Also while the settings might be similar to the bios, being able to tweak and test on the fly is indespensible. You are my hero!

BTW will try thos settings you suggest tonight when I get home from work.

[blass]

on CG cpu is it better if I disable T2?? make it 1T?

[CodeRed]

Originally posted by blass
on CG cpu is it better if I disable T2?? make it 1T?

yes that is correct. Disabling 2T command rate will give a noticeable gain is performance.

[LikwidKool]

Originally posted by krampak
I can't make it run in Win-64bits edition... says:
Unable to start IO.sys service. Error code = 1275
Eprivilege

I just loaded WinXP 64 and get the same error message. Tried starting it multiple times and it's a no go. This is dissapointing as I love the tweaker and want to give this 64bit XP some testing.

[CodeRed]

Originally posted by LikwidKool
I just loaded WinXP 64 and get the same error message. Tried starting it multiple times and it's a no go. This is dissapointing as I love the tweaker and want to give this 64bit XP some testing.

I'll have a look at that when I get WinXp-64 installed.

Have to wait for in the next revision .. sorry guys.

[BMORIN]

You're a genius CodeRed. I could never get passed 34sec and I used your exact bh-5 tweaks and I dropped to 33sec on my stock air cooled 3400+ @ 2.515GHZ (1.7v - mobo limit).

Has anyone fiddled with the Tweaker & 3700eb ram? Just interested to know what settings are working for you.

[Kamerat]

Is there any way to choose the RAM divider directly (/10, /11, /12... of CPU speed) with software?