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[News] Marvell announces Discovery III NorthbridgeANN.lu
Posted on 30-Sep-2003 15:01 GMT by takemehomegrandma94 comments
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Marvell today announced the Discovery III northbridge. It features a 200MHz PowerPC CPU interface, 200MHz DDR SDRAM Interface (400Mbps data rate), Dual CPU SMP Support (MPX and 60x modes), PCI-X, Gigabit ethernet and is software compatible with other Discovery northbridges.

Source: morphos-news.de

Marvell announces Discovery III Northbridge : Comment 1 of 94ANN.lu
Posted by Bob on 30-Sep-2003 13:09 GMT
Its crap. We are living in a day of fast memory buses, what a load of shit, with 200 mhz memory bus. Please someone produce a decent chipset for use with PPC that is modern... 400 Mhz DDR please or better. Bloody hell...
Marvell announces Discovery III Northbridge : Comment 2 of 94ANN.lu
Posted by Bob on 30-Sep-2003 13:09 GMT
Its crap. We are living in a day of fast memory buses, what a load of shit, with 200 mhz memory bus. Please someone produce a decent chipset for use with PPC that is modern... 400 Mhz DDR please or better. Bloody hell...
Marvell announces Discovery III Northbridge : Comment 3 of 94ANN.lu
Posted by T_Bone on 30-Sep-2003 13:16 GMT
In reply to Comment 1 (Bob):
Everythings relative I guess, but how good is it compared to it's alternatives?
Marvell announces Discovery III Northbridge : Comment 4 of 94ANN.lu
Posted by Kronos on 30-Sep-2003 13:17 GMT
In reply to Comment 1 (Bob):
400mHz DDR-RAM ? You know that that would be DDR-800 ? ;)

The best I could find is DDR533 at insane prices and with rather high cycles....

DDR-400 (running at 200mHz) is pretty much state-of-the-art.
Marvell announces Discovery III Northbridge : Comment 5 of 94ANN.lu
Posted by Nate Downes on 30-Sep-2003 13:32 GMT
In reply to Comment 1 (Bob):
Ya know a 200Mhz memory bus is DDR-400 right? Which is about the fastest commodity memory availible. (yes, faster RAM does exist, but it's prohibitively expensive) Heck, this is faster than my pretty-brand-new VIA AMD system's DDR memory, which runs at only 133Mhz. (DDR-266)
Marvell announces Discovery III Northbridge : Comment 6 of 94ANN.lu
Posted by miksuh on 30-Sep-2003 13:37 GMT
In reply to Comment 1 (Bob):
Heh, do you know that 200Mhz memory bus is DDR-400 ? :) Sure, there is some faster memory but it's awfully expensive. 400Mhz memory bus would be DDR-800, where have you seen something like that ? :)
Marvell announces Discovery III Northbridge : Comment 7 of 94ANN.lu
Posted by Tryo on 30-Sep-2003 14:19 GMT
Still no AGP, how backwards.
Marvell announces Discovery III Northbridge : Comment 8 of 94ANN.lu
Posted by Hagge on 30-Sep-2003 14:23 GMT
Uhm, and the difference except faster cpu bus is what?
Marvell announces Discovery III Northbridge : Comment 9 of 94ANN.lu
Posted by Hagge on 30-Sep-2003 14:24 GMT
oh, and wouldn't it be quite weird if your software doesn't work on a computer with a newer chipset? (as far as it's not some weird kind of chipset drivers).
Marvell announces Discovery III Northbridge : Comment 10 of 94ANN.lu
Posted by Hagge on 30-Sep-2003 14:26 GMT
In reply to Comment 1 (Bob):
"Its crap. We are living in a day of fast memory buses, what a load of shit, with 200 mhz memory bus. Please someone produce a decent chipset for use with PPC that is modern... 400 Mhz DDR please or better. Bloody hell..."

Want an intelligent comment! You have never noticed that DDR stands for "dual data rate" and that it transmits twice the amount of data per real clockcycle?

that is yours "400Mhz DDR" is what the chipset supports.
Marvell announces Discovery III Northbridge : Comment 11 of 94ANN.lu
Posted by Hagge on 30-Sep-2003 14:27 GMT
In reply to Comment 7 (Tryo):
16x PCI-X will replace AGP anyway before whatever replaces that later on ;)
Marvell announces Discovery III Northbridge : Comment 12 of 94ANN.lu
Posted by Anonymous on 30-Sep-2003 14:29 GMT
In reply to Comment 7 (Tryo):
> Still no AGP, how backwards.

This baby should offer bandwidh enough to build a motherboard with a very fast AGP slot on it, it's only a matter of motherboard design.
Marvell announces Discovery III Northbridge : Comment 13 of 94ANN.lu
Posted by Hagge on 30-Sep-2003 14:30 GMT
In reply to Comment 11 (Hagge):
evil people in #morphos complaining about agp beeing replaced with pci-express and not pci-x ;)
Marvell announces Discovery III Northbridge : Comment 14 of 94ANN.lu
Posted by Anonymous on 30-Sep-2003 14:30 GMT
In reply to Comment 8 (Hagge):
> Uhm, and the difference except faster cpu bus is what?

Better performance and more features. It will come in 6 versions, all with a different lineup of features!
Marvell announces Discovery III Northbridge : Comment 15 of 94ANN.lu
Posted by Jan de Vries on 30-Sep-2003 14:52 GMT
Great good spec, not much better then the the previous marvell tho.
183MHz vs. 200MHz FSB, and 183MHz DDR (DDR366) vs. 200MHz DDR (DDR400) memory bus. Some kind of RAID support (don't know what to think about that.
But still no AGP implementation, so a PCI-X to AGP hack is still necessary.....Which is a shame for a northbridge ANNO 2003.
But it's clear that Marvell is aiming at the embedded market and not desktop/workstation.
Marvell announces Discovery III Northbridge : Comment 16 of 94ANN.lu
Posted by Anonymous on 30-Sep-2003 15:08 GMT
In reply to Comment 15 (Jan de Vries):
> Great good spec, not much better then the the previous marvell tho.

You have seen every aspect of the specs? I think that there might be some considerable optimazations and improvements inside the core that affects the performance.

> But still no AGP implementation, so a PCI-X to AGP hack is still
> necessary.....

No "hack" is necessary, this is a design issue when makeing a motherboard. The North Bridge offers some channels of different performance, sort of an unformed clay, and then the designer can form that clay into any shape he/she wants.

But this is of course nothing new, and this has not been of any concern to the end users on any platform. The only thing the end users are interested in is what features and what slots and connectors and what performance the motherboard has. There is no problem at all in makeing a motherboard with fast AGP when you have a good clay like this! :)
Marvell announces Discovery III Northbridge : Comment 17 of 94ANN.lu
Posted by Crumb // AAT on 30-Sep-2003 15:09 GMT
Although the chipset seems to be really good it's a pity the lack of an AGP port (although this is not a major issue)... the sad part is that g3/g4s still don't have DDR support... hopefully next year Marvell will release a northbridge for the 970 so the problem will be addressed :-)
Marvell announces Discovery III Northbridge : Comment 18 of 94ANN.lu
Posted by Anonymous on 30-Sep-2003 15:17 GMT
In reply to Comment 17 (Crumb // AAT):
>Although the chipset seems to be really good it's a pity the lack of an AGP >port

Chipset have never ports, motherboard have! :)
You could easily design a motherboard with fast AGP using this North Bridge! :)

>hopefully next year Marvell will release a northbridge for the 970 so the >problem will be addressed :-)

They will next year! Tomorrow we can even say "next quarter" :)
Marvell announces Discovery III Northbridge : Comment 19 of 94ANN.lu
Posted by XraalE on 30-Sep-2003 15:42 GMT
No AGP means no use. As for adding it, I hardly think this is as quick, easy or powerful as having it in the chip. Not to mention as cheap.
Marvell announces Discovery III Northbridge : Comment 20 of 94ANN.lu
Posted by takemehomegrandma on 30-Sep-2003 16:04 GMT
In reply to Comment 19 (XraalE):
But it's there allright!

http://www.bplan-gmbh.de/gfx/pegasos2.jpg

(hehe ;-) )
Marvell announces Discovery III Northbridge : Comment 21 of 94ANN.lu
Posted by Johan Rönnblom on 30-Sep-2003 16:11 GMT
Surely the news item should say "400 MHz data rate" rather than
"400Mbps data rate". The latter would be rather bad, and makes no
sense anyway. :-)
Marvell announces Discovery III Northbridge : Comment 22 of 94ANN.lu
Posted by Anonymous on 30-Sep-2003 16:12 GMT
In reply to Comment 19 (XraalE):
>No AGP means no use. As for adding it, I hardly think this is as quick, easy or powerful as having it in the chip.

If you just "think", shut up. There is enough idiots in this thread already who don't even understand basic technology such as DDR RAM, let alone AGP or PCI(-X). If you have some hardware design background, I'd of course appreciate your expertise. From what I have gathered so far, the soon-to-be-obsolete AGP technology can be derived from (the superior) PCI-X without breaking a sweat.
Marvell announces Discovery III Northbridge : Comment 23 of 94ANN.lu
Posted by BrianK on 30-Sep-2003 16:21 GMT
In reply to Comment 7 (Tryo):
No AGP is not backwards but forwards. Did you see the mention of PCI-X. PCI-X is to replace AGP along with the current PCI interfaces. Not having AGP is great. It'd be great for the AmigaTwo to forgot about AGP and just comply with the newer PCI-X. More expensive sure but, hopefully, less drivers and less complications for video cards.
Marvell announces Discovery III Northbridge : Comment 24 of 94ANN.lu
Posted by Bill Toner on 30-Sep-2003 17:09 GMT
In reply to Comment 1 (Bob):
Realize that there's not much point in making the northbridge FSB much faster, as G3/G4 chips don't have FSB speeds faster. With 200MHz DDR memory bus, that much speed can't really be used by a single CPU either, again not much point in increasing it.

Once the PPC chips increase their FSB, only then will it make sense to increase speeds of other things like memory to what you ask for. The 970 is a good step in that direction, and hopefully we'll be able to use the things at some point. IMHO, compared to my 66MHz 68060, the G3/G4 lines are a good step in a good direction. Once northbridge chips for 970 and its successors are "widely" available, it will then be time for another good step.

If you want the latest high-end highest clocked hardware on the planet, the current Amiga market ain't for you. The 970 offers the possibility for the platform to catch up over the next couple years, but it'll take a while, with AmigaOne/Pegasos as the first steps in that direction. Hopefuly IBM will be better aat keeping up with Apple's demand and have enough chips to satisfy non-Apple customers as well. Motorola's difficulty in keeping up with Apple's needs and ignoring other interested parties has helped keep us only able to use older PPC chips, not the newest ones. If IBM learned from Motorola's sales issues, we should be able to seriously look at a big improvement in the next couple years...
Marvell announces Discovery III Northbridge : Comment 25 of 94ANN.lu
Posted by Martin Blom on 30-Sep-2003 17:30 GMT
In reply to Comment 11 (Hagge):
No, that's 16x PCI Express, which is not the same thing as PCI-X.
Marvell announces Discovery III Northbridge : Comment 26 of 94ANN.lu
Posted by Hagge on 30-Sep-2003 17:52 GMT
In reply to Comment 17 (Crumb // AAT):
i think some g4s got ddr support
Marvell announces Discovery III Northbridge : Comment 27 of 94ANN.lu
Posted by Anonymous on 30-Sep-2003 17:52 GMT
In reply to Comment 24 (Bill Toner):
That's not true since memory bandwidth is not only used by the CPU but also shared with the AGP and PCI buses.
Marvell announces Discovery III Northbridge : Comment 28 of 94ANN.lu
Posted by Hagge on 30-Sep-2003 17:58 GMT
In reply to Comment 24 (Bill Toner):
"Realize that there's not much point in making the northbridge FSB much faster, as G3/G4 chips don't have FSB speeds faster. With 200MHz DDR memory bus, that much speed can't really be used by a single CPU either, again not much point in increasing it."

nice to know the chipsets support dual cpus then isn't it? =P
Marvell announces Discovery III Northbridge : Comment 29 of 94ANN.lu
Posted by Joe "Floid" Kanowitz on 30-Sep-2003 18:12 GMT
In reply to Comment 25 (Martin Blom):
Martin Blom said,
> No, that's 16x PCI Express, which is not the same thing as PCI-X.

Aagh, you're right, and I'd been lulling myself into a false sense of security as all the PCI Express announcements came out. (Everyone else can see http://www.motherboards.org/articlesd/interviews/1130_2.html for some physical identification cues for that sort of slot.) 3GIO is Intel's baby, as was AGP, and apparently it's not even scaling that well just yet (http://www.inqst.com/articles/ServerIO/article.htm), so it'll be interesting to see what happens in the market.

I assume the next generation of chipsets for 'alternative' platforms will start showing up with HyperTransport and fobbing off anything undecided in the bus wars to commodity bridge chips. That'd make a lot of sense, especially with Apple already doing it. (OTOH, everyone wants to be able to claim 'embedded,' 'low chip count,' 'low power' .... so that's the counterpressure.)

Back to good, or at least interesting news -- looks like http://www.tundra.com/ is another company to keep an eye on. Those Motorola designs haven't evolved since.. 1995?.. but it'll be interesting to see where the new owners take the property. If I was calling MAI the 'Via' of PowerPC, looks like we could be up to ALi/Via/SiS...
Marvell announces Discovery III Northbridge : Comment 30 of 94ANN.lu
Posted by Miffo on 30-Sep-2003 18:19 GMT
In reply to Comment 20 (takemehomegrandma):
Cool!

But it is not as small as the Amiga One Lite!
;-)
Marvell announces Discovery III Northbridge : Comment 31 of 94ANN.lu
Posted by Olegil on 30-Sep-2003 18:20 GMT
In reply to Comment 25 (Martin Blom):
Thanks for that reminder, Martin.

Made me go and read up on what PCI Express is :-)

Too bad that we'll need different cards for server and workstation use, though. Will make prices/products differ.

I can understand the need for 1x PCI Express, though. That's a NEAT connector if you're the guy ROUTING the PCB, hehe ;-)
Marvell announces Discovery III Northbridge : Comment 32 of 94ANN.lu
Posted by Joe "Floid" Kanowitz on 30-Sep-2003 18:35 GMT
In reply to Comment 29 (Joe "Floid" Kanowitz):
Minor "What is he on about?" clarification - PCI Express announcements from graphics vendors. I think NVidia and ATI have both promised to go that road. Maybe. Unless I'm remembering wrong again.

And thinking about it a little more, if anyone is *least* likely go HT it's Tundra, since RapidIO is now their thing... but that means they'll be stuck rolling all their own bridges until they convince anyone else to adopt it, and it seems like it'd take something like a HT bridge to legitimize RapidIO beyond the level of single-vendor MuTIOL or V-Link. Oh well, just fantasizing.
Marvell announces Discovery III Northbridge : Comment 33 of 94ANN.lu
Posted by Eva on 30-Sep-2003 19:50 GMT
In reply to Comment 17 (Crumb // AAT):
-----
Although the chipset seems to be really good it's a pity the lack of an AGP port
-----
Absolutely not :D
The superior PCI-X Bus can easly manage a 4x Agp SLOT. Also tensions are similar! It need only some little work on frequencies and Bus Transit (with a Apic degsigner is a work of some weeks for a good enginner).

-----
the sad part is that g3/g4s still don't have DDR support
-----
???? Also Discovery 2 supports perfectly DDR ram! Read well the specs! "200MHz DDR SDRAM Interface (400Mbps data rate)"
It uses the same Aplle G5 Bus approach!
... I have to admint that for my bros it's a Apple G5 BUS copy!
Anyway really the best open chipset for PPC systems
And Bplan already use a chip Discovery for Pegasos 2 and with the backward compatibility of Discovery 3 chipsets ... :D
Marvell announces Discovery III Northbridge : Comment 34 of 94ANN.lu
Posted by Eva on 30-Sep-2003 20:01 GMT
In reply to Comment 25 (Martin Blom):
Yeah Martin right, PCI-X and PCI-Expresse are completely differents!
Anyway it's not difficult to implemet an Agp slot that use the PCI-X core sub-logic ... and in Pegasos 2 it's already present, coz Pegasos 2 support Agp with a discovery chip.
(1+1=2) :D
Marvell announces Discovery III Northbridge : Comment 35 of 94ANN.lu
Posted by Kulwant Bhogal on 30-Sep-2003 20:13 GMT
In reply to Comment 4 (Kronos):
Correction - DDR-400 Dual Channel is more state of the art than just plain DDR400.

DDR400 Dual channel RAM bandwidth = 6.4Gb/s compared to
DDR400 Single Channel RAM B/W = 3.2Gb/s

DDR400 = 200MHz Bus speed with data transfered on both rising and falling edge of clock which why it's called Double Data Rate (DDR). The bus is 64 bits wide = 8 * one byte. Hence 16 bytes transferred per clock cycle = 3.2Gb for Single Channel operation at 200Mhz Clock. Dual Channel interleaves access across two banks to double that.

With CPUs running at multiples of that speed faster, the RAM speed is a bottleneck to getting things processed quicker.

Kulwant
Marvell announces Discovery III Northbridge : Comment 36 of 94ANN.lu
Posted by Anonymous on 30-Sep-2003 20:25 GMT
In reply to Comment 26 (Hagge):
> i think some g4s got ddr support

The CPU is not connected to memory at all, so how can it have DDR support?! The G4 is only connected to the northbridge. That part is, among other things, connected to memory (DDR RAM or SD-RAM ram). You must either mean that a G4 exists that can put DDR RAM bandwidth to good use so that it is not completely wasted OR that the frontside bus uses a similar technology of sending data on both edges of the clock signal. I don't know if the term DDR is used in that case?
Marvell announces Discovery III Northbridge : Comment 37 of 94ANN.lu
Posted by hammer on 30-Sep-2003 22:44 GMT
In reply to Comment 5 (Nate Downes):
I thought PC2700 with 333FSB was pretty new in my POV.
PS; I’m currently running on Kingston PC3200 with 400 DDR FSB (2003). But it’s good to see some developments in PowerPC based chipsets.
Marvell announces Discovery III Northbridge : Comment 38 of 94ANN.lu
Posted by hammer on 30-Sep-2003 22:51 GMT
In reply to Comment 37 (hammer):
I meant Dual Channel PC3200 (400DDR) with speculative (pre-fetch) cache ram on Northbridge chip(e.g. nForce II 400 Ultra).
Marvell announces Discovery III Northbridge : Comment 39 of 94ANN.lu
Posted by Herewegoagain on 30-Sep-2003 23:19 GMT
In reply to Comment 20 (takemehomegrandma):
"In Reply to Comment 19:
But it's there allright!

http://www.bplan-gmbh.de/gfx/pegasos2.jpg "

I see they are using standard Mac G4 Zif cards in there (Sonnet Encore G4). That's good to see. Allows use of standard parts and is less that they have to design themselves.
Marvell announces Discovery III Northbridge : Comment 40 of 94ANN.lu
Posted by Anonymous on 01-Oct-2003 00:06 GMT
In reply to Comment 39 (Herewegoagain):
That's a picture of early pegasos I prototype.
Marvell announces Discovery III Northbridge : Comment 41 of 94ANN.lu
Posted by Nate Downes on 01-Oct-2003 00:10 GMT
In reply to Comment 39 (Herewegoagain):
I'd highly recommend reading the whole article that it's from first:

http://www.bplan-gmbh.de/news/news03_e.html

that picture is from April 30th, 2001.
Marvell announces Discovery III Northbridge : Comment 42 of 94ANN.lu
Posted by strobe on 01-Oct-2003 00:11 GMT
In reply to Comment 39 (Herewegoagain):
Assuming they haven't altered the card, that ought to be a G3 ZIF socket which isn't tied to Sonnet.
Marvell announces Discovery III Northbridge : Comment 43 of 94ANN.lu
Posted by strobe on 01-Oct-2003 00:12 GMT
What the...

Is that a 3GIO slot?!

http://www.bplan-gmbh.de/gfx/pegasos1.jpg
Marvell announces Discovery III Northbridge : Comment 44 of 94ANN.lu
Posted by Anonymous on 01-Oct-2003 01:11 GMT
In reply to Comment 43 (strobe):
Where? All I see are three (probably 4, the other one is probably hidden by the card that's plugged in) PCI slots, an AGP slot and what looks like an audio/modem riser slot.

Why have the northbridge's markings been erased? Could it be because it's an Ar... naah, couldn't be ;)
Marvell announces Discovery III Northbridge : Comment 45 of 94ANN.lu
Posted by Joe "Floid" Kanowitz on 01-Oct-2003 01:18 GMT
In reply to Comment 43 (strobe):
Since that's the original Peg 1 evaluation board(?), more like AMR or CNR or whatever the heck it was that all the boards were going to have for a while, before it became obvious that 1. broadband would take over before either solution would get softmodem support, and 2. plain *soundcard* risers for the port never really came into existence at retail.

Useless right now, but sort of a shame those were shed, as they'd make a very fun 'geek port' for soft-DSP projects if/when the 'community' could support third-party peripheral projects again.

---

I dunno what's up with comparing this design to the supporting chips on the Apple G5. It gives all the bus features of the Apple models, which kicks ass, but given processor bus protocols, it's closer to whatever they did in the DDR XServes... No need to BS about it, it looks like a great chip that'll give the G3 and G4 series a good lease on life next to the 970.

Since those G3s and G4s are still much less expensive than a "G5"/970 for mere mortals (even IBM doesn't have *their* hardware out yet, Apple has exclusivity and they're backlogged, and so on), can't we accept this as 'good news' enough?

If it proves easier for Genesi to integrate, more power to 'em. No need to revisit arguments as to whether or not any Articias were/are 'buggy,' but it's obvious that Genesi hit inconveniences in their approach to designing with them and decided to look for something else. Eyetech seems to be happy, Genesi seems happy with Marvell thus far (hope we don't see 'May' chips in six months... 'Stan Lee' chips?), products start to differentiate such that we *can* have nice "My computer's better than yours!" arguments on basic technical grounds...

It'll be interesting to watch the price/features play out in competition.

---

Call me stupid, but that "Device" on the right side of Marvell's little block diagram, 32-bits @ 133MHz... That's bound to be their way of saying "on-chip AGP," isn't it?

---

While we're flipping through old photos, remember http://www.bplan-gmbh.de/gfx/pegasos2.jpg ? Hee, Sonnettech! (Which reminds me, did anyone reveal the CPU socket/slot attachment for Peg2? Is 'Genesi Slot 1' still a standard, or was that causing trouble with tolerances for the G4 cards? It'd be nice if everyone started sharing MegArray for parts-bin unification on the consumer end, but somehow I don't see that happening?)
Marvell announces Discovery III Northbridge : Comment 46 of 94ANN.lu
Posted by Anonymous on 01-Oct-2003 01:18 GMT
In reply to Comment 1 (Bob):
Can I use dual channel DDR 400 memory?
Marvell announces Discovery III Northbridge : Comment 47 of 94ANN.lu
Posted by Andreas Wolf on 01-Oct-2003 01:53 GMT
In reply to Comment 26 (Hagge):
No, the G4 is only able to use DDR-SDRAM like equally clocked SDR-SDRAM. On the other hand the CPU is not the only system component that uses the RAM. So under certain circumstances DDR-SDRAM has an advantage over SDR-SDRAM even if the CPU doesn't support ist (of course the northbridge must support the DDR-SDRAM):

http://www.barefeats.com/pmddr5.html
http://www.amiga-news.de/de/news/comments/78356.html

Last year Motorola announced the MPC7457-RM with DDR-SDRAM support and 1.2 to 2.0+ GHz as a proposal for end of 2003 / beginning of 2004. I don't know if these plans are still valid.
Marvell announces Discovery III Northbridge : Comment 48 of 94ANN.lu
Posted by tarbos on 01-Oct-2003 02:22 GMT
In reply to Comment 43 (strobe):
Sorry, if I have to laugh into your face now! :DThink Teron...
Marvell announces Discovery III Northbridge : Comment 49 of 94ANN.lu
Posted by tarbos on 01-Oct-2003 02:32 GMT
In reply to Comment 45 (Joe "Floid" Kanowitz):
>Since those G3s and G4s are still much less expensive than a "G5"/970 for mere mortals How expensive are G5 chips currently? >32-bits @ 133MHz... That's bound to be their way of saying "on-chip AGP," isn't it? :-}In that case 32-bits @ 266MHz surely would be better, no? >Is 'Genesi Slot 1' still a standard The Pegasos I CPU cards are said to be compatible with Pegasos II... >It'd be nice if everyone started sharing MegArray for parts-bin unification Are they as cheap as Slot1 solutions?
Marvell announces Discovery III Northbridge : Comment 50 of 94ANN.lu
Posted by tarbos on 01-Oct-2003 02:35 GMT
In reply to Comment 28 (Hagge):
>>"With 200MHz DDR memory bus, that much speed can't really be used by a single>>CPU either, again not much point in increasing it." >nice to know the chipsets support dual cpus then isn't it? =P Dual CPU does not mean dual CPU bus...
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