Wanna see a power supply with GOOD Fujhyyu caps??

[PCBONEZ]

Re: Wanna see a power supply with GOOD Fujhyyu caps??

Since you are taping +12v which is already filtered I'd think a simple one chip LDO +5v VR with a low ESR cap on OP would be fine.

[Per Hansson]

Re: Wanna see a power supply with GOOD Fujhyyu caps??

Th3_uN1Qu3; I second Behemot's sugestion
Use the European eBay sites instead, like .co.uk or .de
And search for items in the European Union
You will then not have to pay any import tax since the item is bought within EU's borders...

[momaka]

Re: Wanna see a power supply with GOOD Fujhyyu caps??

I'm experienced enough to build a buck converter that supplements the 5v rail with power from 12v, besides, i got lots of motherboard mosfets around, and some synchronous buck converter controllers (like the ones that regulate CPU voltages) as well. I think i can use those for 5v

If you're going to mod the PSU, wouldn't it be easier to just install a second schottky diode on the 5v rail (if the PSU has a spot for it on the PCB, of course)? Two SBL3040's in parallel would theoretically give you 60A capacity. With decent heatsinks they should deliver 30A no problem (150W). Every once in a while, you may find a SBL3040 on the 5v rail in those "chinese firecracker" PSUs .

The PSU with the Fuhhjyus i use to power my hard drive since i got this new motherboard because with the CPUs both running at their rated frequency and voltage, the 5v rail goes so low that my hard drive spins down.

How low does it go? If it's not under 4.75v, then it's still in spec. Use your multimeter to check and not the onboard monitors because those are inaccurate most of the time. Perhaps excessive ripple on the 5v rail may be causing your issue (I had a Maxtor hard drive not spin up due to bad caps on the 3.3v/5v rails. The other hard drive in that computer spun up fine).

Also, weren't those PIII Tualatins something like 30 Watt TDP each? If so, that's 60W for the CPUs alone, which isn't a whole lot really. Still better than most signle core P4 . Perhaps with the video card and everything else, you may be pulling ~150W on the 3.3v/5v at max load.

[Th3_uN1Qu3]

Re: Wanna see a power supply with GOOD Fujhyyu caps??

Here the pix: http://img828.*************/g/dsc00753v.jpg/ As you can see, very very good transient filtering stage.. NOT, 4 diode treatment (don't care about that however, Europe is 230 volts), and Fuhjyyu caps. Works just fine however...

Since you are taping +12v which is already filtered I'd think a simple one chip LDO +5v VR with a low ESR cap on OP would be fine.

A linear regulator? I think that'd be close to impossible.

If you're going to mod the PSU, wouldn't it be easier to just install a second schottky diode on the 5v rail (if the PSU has a spot for it on the PCB, of course)? Two SBL3040's in parallel would theoretically give you 60A capacity. With decent heatsinks they should deliver 30A no problem (150W). Every once in a while, you may find a SBL3040 on the 5v rail in those "chinese firecracker" PSUs .

It isn't the diodes, it's the transformer. The Xilence isn't a gutless wonder, my problems are due to crossloading ie no load on the 12v rail.

How low does it go? If it's not under 4.75v, then it's still in spec. Use your multimeter to check and not the onboard monitors because those are inaccurate most of the time. Perhaps excessive ripple on the 5v rail may be causing your issue (I had a Maxtor hard drive not spin up due to bad caps on the 3.3v/5v rails. The other hard drive in that computer spun up fine).

REALLY low. Think 4.49v measured.

Also, weren't those PIII Tualatins something like 30 Watt TDP each? If so, that's 60W for the CPUs alone, which isn't a whole lot really. Still better than most signle core P4 . Perhaps with the video card and everything else, you may be pulling ~150W on the 3.3v/5v at max load.

Yes, but a P4 uses 12v as its power supply... Anyway, update. After doing the VID mod (which i will post pictures of shortly), the system became even more unstable. Reason? The already low 5v rail fell under 4.5v... However the kind guys at Asus left me an extra power connector on the board, with one 5v rail, two 3.3 and three grounds, which happened to accept an AT cable... I had one in my junk box, so i wired it to my secondary PSU (yes, the one with the Fuhjyyus), plugged it in and hoped for the best.

And what do you know, perfect stability at 146FSB, which is 1.53GHz. Awesomeness.

[Behemot]

Re: Wanna see a power supply with GOOD Fujhyyu caps??

Old ATX Fortrons also had these extra AT cables. Anyway, if it's running fine from two different PSU's, you could even take two somewhat decent PSU's (again Fortron, these are very common here in Czech Republic so I expect similar situation in Romania) and somehow solder the two 20pin connectors together into one, e.g. using the 20pin extend cable.

But nice OC, really. I personally have to voltmod my TUSL2-C, it's not stable during sommer and I am actually on maximum voltage in BIOS now. Are you able to play Full HD now? I have no problems playing 1920i on Pentium M 1,8 GHz so you should be able, too.

Such a machine would be nice for one casemod I have in plan, it'll also probably solve the problem with Full HD playback cause I did not succeed with OCing Athlon XP on A7N8X-E Deluxe due to memory instability. Now it's still not enough to play it without lags...

[Th3_uN1Qu3]

Re: Wanna see a power supply with GOOD Fujhyyu caps??

Old ATX Fortrons also had these extra AT cables. Anyway, if it's running fine from two different PSU's, you could even take two somewhat decent PSU's (again Fortron, these are very common here in Czech Republic so I expect similar situation in Romania) and somehow solder the two 20pin connectors together into one, e.g. using the 20pin extend cable.

Two Fortrons? Yeah that could be doable. I will however try to get by with a single PSU. On the 7th i go back home, it shouldn't take me more than 3-4 days to build and test the booster PSU. I have decided on using my 555-based controller, the protection will simply be a crowbar circuit which shorts the output if voltage reaches 5.30v. Since i will be generating 5v from 12v, the current draw at short circuit should be enough to trigger short circuit protection of the Xilence PSU without blowing up the switching transistors of the booster PSU. I will be using 3 motherboard mosfets in parallel. Each of them is rated for 60A, so 3 of them shouldn't even need much heatsinking to switch ~10A. The output will be rectified by a SBL3040 since i have one around anyway.

But nice OC, really. I personally have to voltmod my TUSL2-C, it's not stable during sommer and I am actually on maximum voltage in BIOS now. Are you able to play Full HD now? I have no problems playing 1920i on Pentium M 1,8 GHz so you should be able, too.

I'll try HD content now. I had trouble playing XviD because the K-Lite Codec Pack did not install properly this time (no idea why), but i installed VLC and now everything is as smooth as possible, and a regular DVD rip movie doesn't take up more than 10-15% CPU.

[Behemot]

Re: Wanna see a power supply with GOOD Fujhyyu caps??

Try CCCP and WMP or MPCHC, VLC is much more CPU demanding than the other on my laptop. The result is lagging video in VLC compared with smooth play in the other two. Probably due to it's own codecks.

[Th3_uN1Qu3]

Re: Wanna see a power supply with GOOD Fujhyyu caps??

Well, K-Lite came with mpc-hc and that didn't quite work out, so for now VLC will be fine. However, i've never had any trouble with k-lite, that is, until now... Will try to reinstall it and see how it goes. Btw, i tried a 720p mkv in VLC and it works fine.