SL77R in a Clevo 5680 / Sager D500P

Is this possible?

Would it reduce the heat?

The stock 3.06Ghz HT CPU is in there now.

SL77R: what about the lower voltage

Thank you for the information.

As the SL77R operates at a lower voltage, will things inside the laptop automatically adjust, or is it forced to run at the higher voltage of the present 3.06ghz cpu?

Uhh it's another northwood?

Hi,

Based on the hype around the 'net and very limited feedback (is everyone more than 2 years into computers here dead ? ), I had earlier formed the opinion the SL77R was a 90nm production processor with lower heat. Now I see it's not...

I have the Clevo / Sager 5680 / D500P here with the default 3.06Ghz processor.

Every now and then I would jump on eBay to see if a SL77R 'upgrade' was available, and I bought one, turns out it's not when I looked again: it's another northwood.

a) Is the SL77R any better than the existing CPU (see image)

b) what would be the best upgrade in the m784/socket 478 range?

c) is a prescott/90nm cpu supported in this laptop?

thanks

got it for 20 bucks

I got it for 20 bucks. I don't know where you get your pricing? :P

So what's the fastest and will a 90nm process processor run on it?

That's what I'm asking: what are the model numbers of the best p4's to put in this board.

It's based on an intel chipset i865 or something. look at the cpuz output

90nm?

edit: Everest says Intel Springdale i865PE

edit: I think those P4EE's were only made in an LGA 775 package, not a socket 478. What do you think?

edit: the main thing here is performance/heat ratio. The default P4 3.06ghz northwood runs hot. This also leads to a shortened battery life.



I have replaced the Li-Ion cells with the cells from a returned battery pack I found at the 'hobbiest' table at a local electronics retailer (20 bucks for 8 Li-Ion 18605-type cells, quite a good deal!). The tip there is to put the power from the new cells in parallel to the old until the soldering is done, so at no point is power lost to the PC-board inside the battery shell. The repaired pack is sitting in the fridge charged at 40%, waiting to be used. If I used it regularly in the laptop now, due to the high drain I would be lucky to get maybe an hour out of the pack, and also a shortened total service due to high drain. I am desiring to reduce the power consumption with this other (SL77R) processor while not dramatically reducing the performance.

Also, I have picked up some medium-hardness 2.5mm aluminium plate, to fortify the backing of the hinges: this is the clevo line notorious for bad hinges.

Both the above issues prevent me from using this laptop portably at all, yet.

Ah you mean THIS one?

I find SL7CH

For instance:
http://cgi.ebay.de/Pentium-4-EXTREME...462511?pt=CPUs

Do you mean this one?

I see the price *is* quite high... oh my.

However, that one is also 130nm, so it's not inherently cooler or lower power.

SL7E5 (3.2ghz 90nm) or SL7E4 (3.0ghz 90nm) might be better.

SL77R SL7WK

Put in the SL77R. The other one was a SL6WK. Was the OEM processor with the laptop.

The SL77R POST displays 3.2Ghz; once in windows CPUID or CPUZ says only 1.6Ghz. The only threads I could find were of computers posting at 1.6Ghz, and a pin mod, BSEL1 and BSEL0, to run the processor at 200mhz FSB (800mhz) instead of 133mhz (533), which would be 2.4Ghz instead of 1.6Ghz.

I wonder what the heat difference/power dissipation increase would be at 2.4Ghz? Right now it runs much cooler than it did with the SL6WK at 3.06Ghz. Here is a related text about cooling it down by cooling down the power supply.

To get the temperature of the power brick down, I repaired it first (overheating had caused some blown solder then a blown on-board fuse) then used some simple heatsink paste to bridge the gaps between the shielding and the casing. Inside there are several layers of board, shielding, shielding then plastic casing. Bridging the many layers with non-conductive heat-sink paste brings the heat out and spreads the heat out. The pack runs about 20 centigrade cooler, and it's a very easy fix.

http://forum.notebookreview.com/sage...ml#post5776943
I wonder why this laptop posts at 3.2Ghz, or recognizes the CPU as such, then goes back down to 1.6Ghz once in windows??

Maybe I'll reboot and run some diagnostics like memtest to see what it thinks the speed of the CPU is.

re cooldown care

you can add up in your head, how the processor drawing less power, makes the brick run *even cooler* than it did after the mod. And here's the numbers:

The energy meter says 35 watts at idle (with the screen blanked)

And 50 watts when in use, about 48 if the screen is turned down in brightness.

This compares favourably with about 65 watts with the other processor SL6WK loaded.

So 15 watts less power = cooler brick. Although if someone with a comparable brick had not done the process of the heatsink paste mod, they might not know the difference!

Without power supply mod it goes from lava hot at 65watts and remains flaming hot at 50watts. The brick simply dissipates heat horribly without the addition of paste. To experience i.e. 'see' the benefit without a thermal gun, it's also necessary to do the heatsink paste mod. And it's as easy as swapping the CPU so I put it here for reference.

No point in making a whole new thread. Someone will find it with google or whatever the next search engine to come along. Who knows how long the other forum where I put it will be there? What I'm finding is looking for three-year old or more posts, bios mods, etc is difficult because it was put in only one place.

Anyway if it irritates you just don't read it.


Dragging you back to the main point, do you know why it posts as a 3.2 ghz then runs in windows as a 1.6ghz? Is there something with the OS that needs to be done? Or is it a BSEL1 and BSEL0 mod that is necessary?

Thanks.

...

Do you know why it posts as a 3.2 ghz then runs in windows as a 1.6ghz?

RightMark CPU shows the cpu is running at half, 1600mhz, and never goes above that.

right

right