-<35watt Mobile Barton>-

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Edward Ng
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-<35watt Mobile Barton>-

Post by Edward Ng » Fri Jun 04, 2004 3:55 pm

Just ordered a 35watt Mobile Barton. Will be seeing how low I can undervolt at stock speed, how fast it goes at the minimum voltage option on my AN7, and just how damn high I can clock it on air cooling (at any voltage, SP-97 and 92mm M1B). Let's hope it's as good as it looks!

-Ed

EDIT Will also test for max o/c at stock voltage.
Last edited by Edward Ng on Fri Jun 04, 2004 5:52 pm, edited 1 time in total.

flyingsherpa
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Post by flyingsherpa » Fri Jun 04, 2004 5:46 pm

cool, i've been thinking about getting one of those too. be sure to report back your findings.

wsc
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Post by wsc » Fri Jun 04, 2004 10:38 pm

oooh.. that is very tempting to purchase. eager to hear your results

Nowhere_man
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Post by Nowhere_man » Sat Jun 05, 2004 4:16 am

Plz post the stepping code.

IQYFA is reported to be the best stepping for the 1.45v XP2500 mobile.

I don't know if it applies to the 1.35v XP 2400 version your getting.

Edward Ng
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Post by Edward Ng » Tue Jun 08, 2004 11:54 am

You guys know what?

I just realized that my AN7 doesn't go below 1.375 volts, Vcore; the stock for the chip is 1.35!

So I guess I won't be providing as many test results as I originally promised! :lol: :oops:

But come on, doesn't the thought that the chip's stock voltage is so low that an ABIT mainboard can't even hit it just bring a smile to your face? I know it does for me... :wink:

-Ed

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Post by POLIST8 » Tue Jun 08, 2004 12:21 pm

I've been thinking about a 35w Mobile AMD64. Do these mobile CPUs still fit in normal Socket 754 boards?

Edward Ng
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Post by Edward Ng » Tue Jun 08, 2004 12:28 pm

They are Socket754 chips, but because there is no heatspreader on top, they are not as high as the standard ones, so you need to consider the gapping on your heatsink very carefully, and also realize that some heatsinks for K8 are not designed with sensitive cores in mind, so many of the K8 coolers apply sufficient mounting pressure to damage the CPU (a condition that occurs with K7); Hyper 6 definitely is tight enough to crush a K7 (were it possible to retrofit that P4/K8 cooler to a K7 platform), and the Mobile K8s are hardly any different; I would never, ever risk mounting Hyper 6 on a bare Mobile K8.

Not to mention, of course, that noone (as far as I've seen) makes shims for K8 (yet).

-Ed

POLIST8
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Post by POLIST8 » Tue Jun 08, 2004 12:31 pm

I think that the easy install of the Biostar ideq 200p heatsink wouldn't be a problem...It wasn't on a standard socket A CPU.

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Post by Edward Ng » Tue Jun 08, 2004 12:34 pm

Wait, whoa, huh? Which CPU, which heatsink, which platform? Mobile K8 is Socket754, K8 platform (Athlon 64, Athlon FX), which means K8 HSFs; K7 platform is Socket A (Athlon, Athlon XP, Duron) and of course K7 HSFs.

POLIST8
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Post by POLIST8 » Tue Jun 08, 2004 12:37 pm

It's socket 754. I was just wondering if the mobile Athlon64s could be treated much like the Mobile AthlonXPs.

The Biostar 200P supports Socket 754.

-Nate

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Post by Edward Ng » Tue Jun 08, 2004 12:42 pm

Ah, in that case I don't see why not, but then again noone has yet tried it. It may have to do with chipset; since it's known that Mobile Bartons work on nForce2 Ultra 400 boards, it's very likely that nForce3 250GB boards can handle the Mobile A64s, but I cannot speak for VIA and honestly I haven't heard of anyone actually trying it yet.

-Ed

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Post by POLIST8 » Tue Jun 08, 2004 12:45 pm

Unfortunately the 200P only has the nForce3 150, not the 250...

RaNDoMMAI
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Post by RaNDoMMAI » Tue Jun 08, 2004 12:45 pm

Did you order yours after i told you i ordered one?
you alrdy have a 45W one, do you really think this one will go higher?

For some reason newegg is slow with this order and mine will not come in till tuesday.

i hope i can hit 2.5ghz

~RaNDoM

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Post by Interitus » Tue Jun 08, 2004 12:55 pm

The AN7 only goes down to 1.375???

My NF7 goes to 1.1...that's odd... can't imagine why they'd dump the last bit of voltage for the nicer model...is the 1.375 just in Guru or the BIOS?

I'm interested in this too. I've had 4 Bartons now, and I swear all of them are the same, they just test some. I am running a regular desktop Barton now that runs stock at 1.2 volts, yet I couldn't get a mobile to do it.

I just hope these aren't just the same old chip.

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Post by Edward Ng » Tue Jun 08, 2004 12:56 pm

I honestly don't know but I'm willing to fork the funds to try since I could use a spare Barton for my K7 testbed anyway (this Palomino I have now is not very testbed-worthy, "na'mean?"). I ordered mine middle of last week when they first came back into stock (I had e-mail notification for when it was to come back in stock, since I wanted it from when it was out of stock), but since I'm paying by money order I had to mail it in and they didn't receive it until today. Hopefully it ships out today; if it comes from NJ I may receive it as soon as tomorrow! Otherwise, I am confident I will receive it before end of the week, anyway...

I have heard that these cores don't take as well to extremely high voltages (someone said it can't POST at 2.2 while their 45watter did just fine at that voltage), so its maximum clock may not go as high as the very good 45watt chips, but it should hit what clocks it can hit at a lower voltage than the 45watt model. All of this also is variable depending on which core stepping you receive and/or what week the chip was fabbed (conflicting theories in regards to that). In the end, there's nothing one can do except try one for themself, which is what I'm here for.

I'll be perfectly happy if it can do at least 2420MHz, stable, at a lower voltage than 2.00; I'll be even happier if it can go better than 2420 @ 2.00, and I'll be absolutely ecstatic if it can go more than 2420 at under 2.00. :wink:

-Ed

EDIT: Funny cross-posting...

But the 1.375volts bottom limit was straight from my SoftMenu in the CMOS.

EDIT 2: BTW, POLIST8, I was simply stating the nForce3 250 as an example, but I mean nVIDIA chipsets in general. Either way, I'm not 100% positive on Mobile K8, anyway. It just makes sense because nVIDIA probably makes their chipsets compatible with portable (laptop) applications, is my guess as to why they take so well to the mobile chips.

anton
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Post by anton » Tue Jun 08, 2004 3:32 pm

You should be able to lower the voltage of the AN7 with 8rdavcore

http://forums.silentpcreview.com/viewtopic.php?t=8561

Edward Ng
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Post by Edward Ng » Tue Jun 08, 2004 4:49 pm

Thanks for the heads-up; I'll check that out but I'm not sure if it will work on AN7 due to uGuru, which complicates everything. Luckily, I can also check uGuru to see what its minimum voltage setting is, which I have not yet tried.

-Ed

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Post by mb2 » Wed Jun 09, 2004 6:52 pm

the 35w XP-Ms dont really respond to voltage increases above 1.8-1.9 so your best OC will be under 2v most probably, whatever it is.
2.5 @ 1.85v is a decent average of their OCs. (atleast for A stepping, I may [or may not] be better)

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Post by Lazarus » Thu Jun 10, 2004 7:18 am

I just installed my 2200M yesterday, so I haven't really had much time to 'see what she'll do', but so far, so good :)
On my Shuttle AN35N Ultra with an SP-97 and a Panaflo 92mm MBX, I'm running at 1700 (8.5 x 200) at 1.25 vcore. Ran Prime 95 overnight for 8 hours with no errors. Temps are 28-29c at idle, 33c loaded with the Panaflo spinning at about 1400. I'd say I have plenty of room for reduced fan flow, or perhaps a swap out to an L1A once the TIM (AS5) has set up.

I'll play more as time permits. Pretty pleased so far, for only $77 :)
Wish I had written down the stepping though. The little OEM packaging had no sticker on it or anything, and I'm not going to pull the SP-97 off to find out what it is.
Also, I think the AN35N Ultra goes down to 1.1 vcore, for what it's worth.

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Post by Interitus » Thu Jun 10, 2004 10:11 am

Nice Lazarus.

I've got an AN35N Ultra coming along with a mobile 2400. Hope they fair just as well. I'll be using the Zalman HSF though. I got a steal on the 2400. A guy sold it to me for $40 shipped since he tried to cut the L5 for SMP and it didn't work. In a uniprocessor system it should only keep it from recognizing multi's above 12.5. Not necessary for me anyways :)

I did notice with my old mobile that i got very diminishing temp returns after reaching a certain vcore. I think with my original desktop barton it was about 1.4 volts that no matter how much i decreased it, it still ran the same temp. About 33 idle, 37 load if I recall. I thought that was interesting, just something you might want to play with, as mine ran the same temperature at 1800mhz as it did at 1700...

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Post by Edward Ng » Fri Jun 11, 2004 4:53 pm

My new 35watt 2400+ shipped in and is installed; am already running Prime95 In-place large FFT torture at 1.375volts, 200*9=1800MHz.

Already cleared five tests!

Will update with photos and more details in a few; touching up the images as I Prime to set the TIM.

-Ed

Edit: Here we go...

According to my trusty Entech TrueRMS Multimeter/Thermal Probe, the temperature of the air entering the front intake of my Super LAN Boy is 24C.

I am cooling the CPU with a Thermalright SP-97, and a Panaflo 92mm M1B at the full 12volts.

CPU is running at 9.0 * 200 = 1800MHz, with a Vcore setting of 1.375 (according to Motherboard Monitor 5.3.6.6 beta with uGuru support, it is actually at 1.40V).

Idle temperature is an incredible 29C!

Full load temp. is an equally remarkable 33C!!!

The same temperatures were reported by ABITEQ as well.

Unfortunately, I checked the OC Guru and it still doesn't allow any voltage under 1.375; I guess I'm SOL in terms of undervolting (or even stock volting!) this chip.

Will return with some more overclocking results in a few, but firstly; the photos!

Image
Both chips, side-by-side; my new 35watter and my old 45watter, from left to right.

Image
The 45watt 2400+...

The best I could pull off with this thing was 11.0 * 220 = 2420MHz, and that's with single-channel and CPU interface OFF! If I enabled CPU interface, it couldn't even do FSB200 stable (my board has already been L12 modded). If I did dual channel, same thing, evne FSB200 was too much. In fact, before I did L12, I could only hit FSB205 with CPU Interface OFF and single-channel!

Image
The 35watt 2400+...

With my new chip, I'm already breaking new ground; it's right now running only single-channel (didn't try dual channel yet, as it's not as critical), but CPU Interface is ON and it's rock solid at FSB200! I will be cranking it up, of course, and will post up some more results later.

-Ed

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Post by Bean » Sun Jun 13, 2004 4:39 pm

Nice temps! Wonder what would happen if you slowed that fan down . hint hint :lol:

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Post by Edward Ng » Sun Jun 13, 2004 5:09 pm

Well actually I could've dropped it to 5volts and have gotten dandy temperatures, I'm sure of it. However, I'm going for best overclock and I've managed to get 12 hour Prime stable at 213 * 12.0 = 2556 @ 2.1 Volts; load temp is 63C max. This chip also hits the 2420 figure that was the max of my old chip at a lower 1.85volts, rather than needing the full 2.0 for that speed. Best of all, something clicked in there and now I can leave CPU Interface enabled; this gives me a nice boost of ~135KB/s to my memory bandwidth.

I am sure I would've gotten some pretty insane thermal numbers if only my board could downclock further than 1.375.

-Ed

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Post by Bean » Sun Jun 13, 2004 5:34 pm

Sounds like you got a good chip. Your temperature comments sound very encouraging thanks!

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Post by RaNDoMMAI » Sun Jun 13, 2004 7:02 pm

just to add

got my 35W barton 2400 a couple of days ago

my NF7-S rev 2 reads it as unkown cpu typ

but anyway

I am running it on
200 x 11 at 1.5v
when just surfing or typing it is 37-40C
CPU burn for 20min it was 50C
prime95 and gaming it was 49-51C

prime95 for a day

dunno if i want to push it higher.

1.9V is alot to me

~RaNDoM

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