Dwaco wrote on 2024-06-24, 18:05:

Yes, here it is: […]
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H3nrik V! wrote on 2024-06-24, 08:00:

Holy cr*p! SD-RAM on an 840 chipset? Is there some kind of MTH on the memory riser board?

Yes, here it is:

xu800_sdram_daughetboard.JPEG

Looking at service manual I can judge that you would pick rdram if you didn't care about the price or didn't need max possible memory.

Largest modules for SDRAM were 512Mb (for total of 2Gb system ram)
Largest modules for RDRAM were 256Mb (for total of 1Gb system ram)

And I must agree with chinny22 - that board screams for an extra CPU (but probably will need a VRM as well?)

Yes, I need VRM P/N 0950-3633. Don't have one yet.

Also I need to understand if my system can have 1GHz CPUs. And I am unable to find the service manual for 1GHz models described to understand!
Hence my initial post in the first place, I wanted to try finding people with knowledge about Kayaks and XU800 in particular.
If someone with XU800 1GHz responds, it would be helpful.

If I manage this symbolic 1GHz, it would be great!

I have a gut feeling I will need to check PSU as well given that 2 cpus of higher frequency are likely to draw even more from 12V rail, which I am not happy about.

OMG I might almost understand that they made MTH solutions for the i820 chipset, keeping in mind that it was the cheaper of the high-end chipsets. But for the i840, which was supposed to really shine with its dual channel (IIRC) RD-RAM controller on a "no expenses saved" solution. It must have cribbled it crazily?

Dwaco wrote on 2024-06-25, 18:38:

Wow, this is something to work with. […]
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PC Hoarder Patrol wrote on 2024-06-25, 16:20:

Based solely on the release dates, there was a PDF (521km104en.pdf) version of the 'XU800 Service Handbook' dated Sep 2000 and then Sep 2001. Can't find it online, and since HP locked out browsing on their ftp servers, the only way to download from there is to know the exact filename and url.

Wow, this is something to work with.

How do you know the file name?

Which are the ftp sites?

The file links are listed on the archive support portal, but the actual PDFs were never saved there...

hp Kayak xu800 manuals

Installing, Configuring, Upgrading

service handbook (521km104en.pdf)
setting up and using your pc workstation (521km106en.pdf)
installing and replacing hardware parts in your pc workstation (521km107en.pdf)
information about your pc workstation (521km108en.pdf)
upgrading memory (521kmb195en.pdf)

Technical Reference

technical reference manual (521kmb149en.pdf)

Using

user's guide (521km105en.pdf)
FastRAID PCI user's guide (521kmb154en.pdf)

The basic hp ftp link used to be ftp://ftp.hp.com/pub - most modern browsers have already dropped support for the ftp protocol and, even in those that haven't, this link still doesn't work as hp moved all access behind the https protocol so, taking the above latest BIOS as an example...

ftp://ftp.hp.com/pub/softlib/software1/vc3218 … en/kdf675en.exe can't be browsed for or work as a direct link, but...

https://ftp.hp.com/pub/softlib/software1/vc32 … en/kdf675en.exe will work as a direct link, as long as you can find the old ftp full path, either linked somewhere or through an ftp search engine.

H3nrik V! wrote on 2024-06-25, 21:35:

OMG I might almost understand that they made MTH solutions for the i820 chipset, keeping in mind that it was the cheaper of the high-end chipsets. But for the i840, which was supposed to really shine with its dual channel (IIRC) RD-RAM controller on a "no expenses saved" solution. It must have cribbled it crazily?

Well, as you can see in the image, there are two MTHs and as a consequence two channels.

However, there is chance that I could get the RIMM version of the daughterboard, in which case I will compare.

As per why it was done in the first place, Rambus was still fresh when these chipsets were released, so it was a good backup plan to have both options through daughterboard - if Rambus was bust due to whatever reason, customers could easily switch to SDRAM.

H3nrik V! wrote on 2024-06-25, 21:32:

But could it run with e.g. Katmai 600? They would be a lot more power-hungry than the Coppermines, maybe equivalent to 1100s?

No idea, as far as I can see in Service Handbook Jun 2000 version, it was ever shipped with Coppermine.

But while searching for VRM it seems it is 5V->1.7V so I feel kinda safer as much 5V rail is a notch over 5V unlike 12V rail.

Dwaco wrote on 2024-06-28, 16:10:

Well, as you can see in the image, there are two MTHs and as a consequence two channels. […]
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H3nrik V! wrote on 2024-06-25, 21:35:

OMG I might almost understand that they made MTH solutions for the i820 chipset, keeping in mind that it was the cheaper of the high-end chipsets. But for the i840, which was supposed to really shine with its dual channel (IIRC) RD-RAM controller on a "no expenses saved" solution. It must have cribbled it crazily?

Well, as you can see in the image, there are two MTHs and as a consequence two channels.

However, there is chance that I could get the RIMM version of the daughterboard, in which case I will compare.

As per why it was done in the first place, Rambus was still fresh when these chipsets were released, so it was a good backup plan to have both options through daughterboard - if Rambus was bust due to whatever reason, customers could easily switch to SDRAM.

Ah, yes. Kinda makes good sense after you elaborated on that 😀

Looks like the 933MHz models appeared on the US list towards the end of 2000, followed by the 1GHz models in Jan 2001 (later for both SKUs if non-US)

Buy the two matching Pentium slot 1 1ghz with the correct FSB and try. My IBM Intellistation is from same generation, i840 Chipset, It boots and works, the BIOS Just whine It does not know the processors. Just a little prompt every start UP. Intellistations 6868 runs even the Pentium iiis 1,4ghz If you buy the modified ones on eBay from a guy in Korea. The tricky part is finding the correct slot 1 slocket adapters, mine worked only with a MSi 6905. Does not work with two of these Tualatins althoug, would need electrical mods on the slockets beyond my habilities.

Hi 😀

I have one Kayak dual 1GHz...

PC Hoarder Patrol wrote on 2024-06-28, 22:56:

Looks like the 933MHz models appeared on the US list towards the end of 2000, followed by the 1GHz models in Jan 2001 (later for both SKUs if non-US)

The attachment hp Kayak xu800 models 2000-2001.pdf is no longer available

What price for dual 1GHZ ? Must be over $4000...

mferrocosta wrote on 2024-08-25, 13:31:

Buy the two matching Pentium slot 1 1ghz with the correct FSB and try. My IBM Intellistation is from same generation, i840 Chipset, It boots and works, the BIOS Just whine It does not know the processors. Just a little prompt every start UP. Intellistations 6868 runs even the Pentium iiis 1,4ghz If you buy the modified ones on eBay from a guy in Korea. The tricky part is finding the correct slot 1 slocket adapters, mine worked only with a MSi 6905. Does not work with two of these Tualatins althoug, would need electrical mods on the slockets beyond my habilities.

Well, yes, I have already have:

• VRM
• Two 1GHz 133MHz FSB Coppermines
• RDRAM daughterboard

Waiting for:

• Heatsinks
• RDRAM modules

Interestingly, finding a pair of heatsinks (fanless, of correct size and correct fin orientation) turned out to be harder than finding CPUs. Had to settle on a pair of aftermarket ones with fans, hope not installing fans will be enough. but will see.

I am not interested in Tualatins/slockets anyways.

This is workstation, you know, machine you needed to be stable to perform your very important work.
If you wanted it to be faster you forked significant money back in the day, not doing some weird slocket stuff.

Moreover, 1GHz Slot1 Coppermines are remarkable symbolic milestone that marked the end of one era (of slot cpu packaging) and beginning of another (of GHz instead of MHz), so I will be happy with those.

mariolini wrote on 2024-09-11, 00:23:

Hi 😀

I have one Kayak dual 1GHz...

I assume XU800 as well? Maybe you could share some photos?

mariolini wrote on 2024-09-11, 07:04:

What price for dual 1GHZ ? Must be over $4000...

I assume those are the only SKUs available at that time so you would buy single CPU system and also purchase 2nd CPU kit from HP (with VRM).

Dwaco wrote on 2024-09-11, 16:13:

mariolini wrote on 2024-09-11, 00:23:

Hi 😀

I have one Kayak dual 1GHz...

I assume XU800 as well? Maybe you could share some photos?

https://www.ebay.de/itm/205034523327

M77 wrote on 2024-11-22, 21:08:

Dwaco wrote on 2024-09-11, 16:13:

mariolini wrote on 2024-09-11, 00:23:

Hi 😀

I have one Kayak dual 1GHz...

I assume XU800 as well? Maybe you could share some photos?

https://www.ebay.de/itm/205034523327

Is this machine yours you are currently trying to sell on eBay?

M77 wrote on 2024-11-22, 21:08:

Dwaco wrote on 2024-09-11, 16:13:

mariolini wrote on 2024-09-11, 00:23:

Hi 😀

I have one Kayak dual 1GHz...

I assume XU800 as well? Maybe you could share some photos?

https://www.ebay.de/itm/205034523327

Ewwwww thats one Ugly blue color,
I have a 1ghz HP Vectra tower that is Beige in color.

Intel486dx33 wrote on 2024-11-26, 16:58:

Ewwwww thats Ugly blue color,
I have a 1ghz HP Vectra tower that is Beige in odor.

That would be one of my questions to M77 if they are the owner of this machine on eBay as I don't remember this being such vibrant ugly color.

Like, is it painted to be more vibrant or some manipulation was done to photos.

My machine has much more muted color (it even has yellowed even which kinda adds greyish tint to blue).

Dwaco wrote on 2024-11-25, 20:09:

M77 wrote on 2024-11-22, 21:08:

Dwaco wrote on 2024-09-11, 16:13:

I assume XU800 as well? Maybe you could share some photos?

https://www.ebay.de/itm/205034523327

Is this machine yours you are currently trying to sell on eBay?

Yes, I am the seller, the computer was in the lab for researching the quality of materials ( steel)... it was painted because the plastic was a little cracked so I fixed it with putty 😉

M77 wrote on 2024-11-27, 23:10:

Yes, I am the seller, the computer was in the lab for researching the quality of materials ( steel)... it was painted because the plastic was a little cracked so I fixed it with putty 😉

Good luck finding new owner for the machine, happy to hear it was useful for (scientific or industrial) research.

The machine should have been upgraded at some point as originally this SKU should have had single 800EB CPU.

Hi.
Got also a XU800 with Dual P3 800.
I'm struggling to get a proper GPU running in this machine, i'm so far to conclude it has some sort of damage and wanted to hear your opinions and experiences.
The single working GPU in my possession is a Voodoo 3 2000 which works with the machine in 3d-accelerated full screen settings.
I tried some but they won't work properly:
- Hd3450 (Has a bridge chip i guess and i've read they won't work in older P3 systems)
- FX5900XT
- Radeon 9200SE
- Geforce 2/4 MX
Whenever i try 3d/d3d games with these cards the machine crashes instantly to black screen and i have to power cycle it.
I wonder if it's incompatibility or if it has some sort of damage.
Because i have another Kayak XM600 which runs great with a Radeon 9250SE.

I guess it was some sort of driver problem. After doing a fresh installation on another disk it's working like a charm.