Mobile 2800+ 1MB Results...

[LilGator]

Just got a M64 2800+ today, popped it into an umodded K8NPro under a SLK-948u and a cheap, quiet 92mm fan.

Stepping:

AMN2800BIX5AR
CAABC 0416XPMW

Set HTT to 300MHz x 8, LDT to 2x, vCore @ 1.55v, Memory (Corsair 2x512MB BH-5) running a 3:2 divider... and wallah :D

2400MHz (3700+) on a $187 chip :)

I'll try and get some benchies, then see how much this chip has in it...throw my 92mm Tornado on, and put this in front of the window AC unit should do the trick ;)

EDIT: Post 666 :p:

[Drisler]

NICE, very nice.

[LilGator]

Benches:

http://www.af-tech.com/public_ftp/Benches.at.2400.JPG

Bumped up vcore to 1.7v, the max, since the cooling can handle it...

[LilGator]

http://service.futuremark.com/compare?2k1=7938828

Same settings, running 9800Pro (128MB XT) @ stock 412/365 - WinXP | DX 8.1 | Cat 4.6

[AcEmAsTr]

tried 5:4?

[LilGator]

I haven't yet, but that is going to need 3.3v + on this BH-5 to even hope for that...all I'm giving it now is 2.8v

I have 2T disabled, but have no idea how far these 512MB sticks will go like that.

EDIT: measured vdimm @ 2.93v

[Geforce4ti4200]

my god, those lobbies are insane! is 300x8 way faster than 200x12? I know your ram is only running at 200MHz but does the extra fsb still help because you gain on HT among other things

[WesM63]

Nice clocking, but my 3200+ clawhammer/ k8n-pro/2x256mb 3700EB does the same super pi at 2.3ghz at 3-3-2-7-10-16 timings!

Then again I have a mem spd of 256mhz and HTT speed of 330mhz.

[LilGator]

Yeah, getting my memory up to 250MHz 2-2-2-5 will help a ton in SuperPi

And GF4, i can't try 200x12, highest multi is 8 ;)

And there is no gain on HT, i switched from 200x3 LDT, to 300x2 LDT ... Both 600MHz HT

[Lithan]

I seriously want to buy this exact setup (been held off largely by worries of not being able to hit 300+ HTT). But I keep telling myself the performance diff between 2800xp and 2400A64 can't be big enough to make it worth dropping the ~250-300$ I'd spend on this rig.

Have you found your setups max yet? Seems you've only got pics of 2400mhz.

[HawainPanda]

awsome

[LilGator]

Glad you asked: only a screenie, haven't tried benches other than sandra yet, but I might need more volts/cold air. Still using quiet fan for now. It's nice playing 1080i HDTV with about 20% CPU usage ;)

[Shade00]

Nice. Are you stable at 2.4ghz with just 1.55v? My 2800+ isn't stable unless I give it 1.675v (~1.65v actual). When I get a chance I'll shoot for 2.6ghz and see if it seems to be the norm.

GF4: Due to the memory architecture of the A64, 300x8 with memory at 200mhz should be the same as running 12x200 1:1 as long as you're running the same HT speed. Even with a higher HyperTransport speed, though, there isn't much difference, unless of course it's 200mhz vs. 800mhz. :rolleyes: By the way, I thought you were getting an A64 about now? What happened?

[LilGator]

How much does 1x LDT hurt performance ? I wish there was a 1.5x, when i'm doing 300x2 (600MHz HT) it doesn't like much higher :/

2.4GHz is Super_Pi / 3D stable with only 1.55, but errors out in Prime after a few mins...I just bumped it up to 1.7v, haven't tried anything in between. @ 1.7v it seems to be perfectly stable.

Do you know what these settings are/what are the best options for them ?

Speculative TLB Reloads
LDT Downstream Width
AGP Sideband Address

And what are safe volts for the VDDQ, and V HT ? I have them set to max right now :D

[blinky]

im thinkin of pickin up a mobile 3200, if i dont get 3700

[Shade00]

Speculative TLB reloads controls the 64-bit side of the CPU. You use that if you want to install XP 64 or 2k3 64.

LDT Downstream Width should be set to Auto - I think the only option for the NF3 150 is 8 bit anyway. :rolleyes:

Sideband addressing should be fine if you leave it enabled. It doesn't really affect your performance.

As for the voltages, I can't really say... my chipset voltage (I think that might be the HT voltage) is set to 1.9v, which is the max in the BIOS. There was a comparison of different LDT multipliers a while back, with 1x clearly yielding the worst performance, and 2x not being very far off from 3x. However, that was with the HTT speed at 200mhz. I think the important thing is overal HT speed. So, 300x2 should be the same as 200x3. If I had some higher multipliers I'd do some testing, but I've only got up to 8x, so someone with a 3700+ will have to do it. ;)

[LilGator]

Yeah, I'm just wondering if the HT is limiting me from getting higher than 300HTT, what's the highest someone has gone on a NF3 150 board ? 600MHz+ I mean...

[Shade00]

They're usually capable of 650-660...

[WesM63]

Lilgator,
I'm using the 1x LDT multi, don't know if it makes much of a diffrence or not.

I think the max for the NF3 150 boards like my K8N-pro is prob around 330mhz(660mhz) HTT speeds. Mine will run at
333mhz HTT, but my rig just isn't stable at 257mhz mem. It'll get about 3/4 the way thru super pi and crash out.

[DisposableHero]

do these mobiles have the heatspreader?

[WesM63]

Originally posted by DisposableHero
do these mobiles have the heatspreader?

No, therefore they will not work with the stock bracket mounting mechanism.

[iceman2g]

WesM63 wouldn't 1X LDT give you worst performance than 2X at 300HTT?

[WesM63]

Originally posted by iceman2g
WesM63 wouldn't 1X LDT give you worst performance than 2X at 300HTT?

Well not memory bandwidth and superpi wise. I just ran them and they are exactly the same as 1x LDT. I'll try 3dmark next.

[Karnivore]

Lilgator, does this board/cpu combo have same issues as other boards with the mobile processor? Voltage and multiplier the board recognizes processor at? and what bios you running it on...


EDIT: also did you have to shorten the standoffs on the HSF? or any other mods to it to get decent contact....

[LilGator]

Nope, using a SLK-948u, just screwed it down, worked perfectly.

The only issue is the voltage it first recognizes it at. I first booted up at 0.995v I think (The BIOS detected the 'normal
voltage as 0.995). After changing the voltage in Clockgen, it seems to think the normal voltage is 1.45v now.

BIOS version I'm using is 12c

[Karnivore]

It recognized the correct divider?


Thanks

[LilGator]

Memory divider ? I'm pretty sure it defaulted to AUTO, can't remember what the setting it used though.

I'll reset the cmos, see what the default settings are...

Multi defaulted to 8, and has stayed that way since.

[Karnivore]

Originally posted by LilGator
Memory divider ? I'm pretty sure it defaulted to AUTO, can't remember what the setting it used though.

I'll reset the cmos, see what the default settings are...

Multi defaulted to 8, and has stayed that way since.


Umm, sorry, I meant Multiplier, brain fart, lol.... thanks

[LilGator]

Ah, ok :) Yup 8x all the way...

I figured it would default to 4x, but nope, works exactly as it should.

[Kunaak]

wow, thats a hell of a chip you got there.
very nice indeed.

:)

[HKPolice]

lilgator, what fan are you using, at what rpm?

Shade, what HSF/fan/rpm?

Is it 100% prime95 stable?

Thanks

[LilGator]

http://www.af-tech.com/public_ftp/2400.Prime95.JPG

Yeah, it's prime stable ;)

I'm using a 92mm fan I took out of a dead PSU, very quiet/low speed. No clue what the specs are, but it doesn't move very much air at all...

[HKPolice]

Originally posted by LilGator
http://www.af-tech.com/public_ftp/2400.Prime95.JPG

Yeah, it's prime stable ;)

I'm using a 92mm fan I took out of a dead PSU, very quiet/low speed. No clue what the specs are, but it doesn't move very much air at all...

Cool, what are your ambient/idle/load temps?

[LilGator]

25ºC / 30º-32ºC / 36º-38º

I think :D

[mrflushysheaven]

wow i want one too now. does anyone know if they're gunna make 939 mobiles and if so when? i was thinking about getting a64 around november-ish when prices drop.

[HKPolice]

Originally posted by LilGator
25ºC / 30º-32ºC / 36º-38º

I think :D

Damn, my ambient is like 23c, idles at like 45c, and load 54c :(

Got the same heatsink, IHS removed, 3K fan

I don't know if it's the CPU or just cuz my HS is old 'n tarnished

[Tedinde]

I got a 2800 pro today also. My MSI board is good to 315fsb stable. I also got the Abit KV8. It was the combo deal last week.

Abit KV8 and a a64 2800pro for $198 shipped

[LilGator]

This morning when I checked it out, it was 28°C ... as I'm typing this, it's at 30ºC

[Shade00]

I'm using an Alpha PAL8150T. Wish I had time to do another round of Prime testing, but mine's stable for 12 hours+. With the Alpha and a 2800rpm 80mm quiet fan, mine idles around 34C with a 25C ambient. Under load it hits about 42C. This is according to a thermal probe, not the BIOS or MBM.

[Holst]

Hi m8,

Nice chip you have there.

I have a 3200 mobile 1mb clawhammer and im having some issues clocking the memory above 200mhz.

If you use 1-1 how far can you clock your memory?

I would be VERY interested in how far you can get.

Although I can get over 2.5gig out of my chip I have to run the memory on a 2/3 devider, which kills performance even at 290+ HTT...
Im worried that this may be my chip, not just this funny MSI motherboard im using.

[HKPolice]

Did you have to mod your Alpha to get it to fit without the IHS?


Originally posted by Shade00
I'm using an Alpha PAL8150T. Wish I had time to do another round of Prime testing, but mine's stable for 12 hours+. With the Alpha and a 2800rpm 80mm quiet fan, mine idles around 34C with a 25C ambient. Under load it hits about 42C. This is according to a thermal probe, not the BIOS or MBM.

[saaya]

Originally posted by mrflushysheaven
wow i want one too now. does anyone know if they're gunna make 939 mobiles and if so when? i was thinking about getting a64 around november-ish when prices drop.

check out the amd mobile roadmap in the mobile sempron benchmark thread :)

[Lithan]

Just got an idenical stepping. Next time you have cpu out, can you check the last 3 digits of the top line for me?

[LilGator]

Holst: most I could get was about 220MHz on the memory (2-2-2-5) using 2x512MB sticks...

Lithan, don't have the chip anymore :( sorry...

What board will you be using ? You should get identical results :toast:

[Lithan]

GA-k8n or whatever. Same board... it wont arrive till next week though. So I've got the chip on my desk. Got my newegg clock/calculator too. :)

Can I ask what happened with the chip? Build for a friend?

[LilGator]

LOL nice ...

I had to sell the board and cpu to recover some funds...

Just noticed your avatar :D Full Metal Jacket eh ?

[Lithan]

yessir