Do i need to lap a new Alpha 8045?

[xander5000]

 

[Migroo]

... You need to give some more details:

eg:

- You have lapped your existing 8045 and screwed it up
- You have not lapped your 8045 but you have been using it for x months
- You dont have an 8045 yet...

Details please!!

 

[xander5000]

Oh, sorry. i have the stock sink on my 1900+ right now. the 8045 is in the mail. do i need to lap it? what should i do to the core, just clean with acetone?
thanks

 

[Migroo]

Oh, I see

No I dont think so. I dont have any experience with the Alpha PAL 8045 though, so you should seek another opinion on what I am about to say.

You are OK to just put a HSF onto a chip, however it is always nice to clean up the base of the HSF first - surgical spirit is good for this (there are others, basically alcohol (ethanol))

By no means do you have to lap a heatsink before you use it, i mean have a look at the retail HSFs that come with chips - do they look shiny as if they have been lapped to you? Therefore if the stock sink does it's job, then you'll be fine without lapping the sink. Of course, no one is stopping you

Personally, I wouldnt bother, just clean up all the old thermal pad / paste before you install the new HSF. - What are you going to use in that dept. btw? Thermal paste? a pad? Arctic silver?

Hope this helps.

BTW: You probably know this, but remember you'll have to take your motherboard out to install the 8045...

 

[xander5000]

arctic silver 3. good?
x

 

[Divebrake]

I lapped my 8045 a bit. It had big machining grooves on the base so I lapped just enough to get rid of them. Some people have lapped them longer so as to get a mirror-like shine, but I didn't want to remove too much copper, and I'm skeptical of the idea that a mirror shine is necessary. I'm sure my AS3 has filled in any imperfections in the surface anyway.

 

[MoFunk]

I didn't lap mine and get really good temps, just using ASII to fill the gaps!

 

[Migroo]

<< arctic silver 3. good? >>



Yeah thats great. See the others here that have experiences - some lap the sinks... some dont

 

[DuffMan]

When i got mine, i just used some brasso to get rid of all the oxidation.
I cleaned the die and the bottem of the HSF with rubbing alcohol and put on ASII.


Case: 21°C
CPU: 32°C
CPU Fan: 4272RPM
1.47GHz @ 1594Mhz
1.83v
been running 100% for more than 2 days

 

[Migroo]

<< Case: 21°C
CPU: 32°C
CPU Fan: 4272RPM
1.47GHz @ 1594Mhz
1.83v
been running 100% for more than 2 days >>



Not bad at all!! :Q

 

[DuffMan]

Thank you, I haven't OCed more because once i get to 146MHz fsb(1605mhz) it crashes about once a week (that may be me almost never rebooting my computer). So i am running at the highest voltage my bios will allow and waiting for a rainy day to see how i can get. Anyone know where to buy silver conductive laquer(sp?) online for less than 15$? please reply if you do. I already filled my trenches when i was waiting for my mobo to arrive, i just need to connect the bridges now.

 

[xander5000]

DANG! i'm at 49 degrees at idle with my stock fan. i sure hope the alpha helps.

hey, how do i make that little degrees sign?

x

 

[DuffMan]

alt+167(on the numpad)
º

Goto start>programs>accessories>system tools> char map
that will show you every charactor(letter) in a font

like these: &#1488;&#1489;&#1490;&#1491;&#1492;&#1493;&#1494;&#1495;&#1496;&#1497;&#1498;&#1499;&#1500;&#1501;&#1502;&#1503;&#1504;&#1505;&#1506;&#1507;&#1508;&#1509;&#1510;&#1511;&#1512;&#1513;&#1514;&#1580;&#1605;&#1638;&#1780;&#7848;&#7868;&#7888;&#7908;&#7928;?&#8319;&#8593;

 

[xander5000]

º cool!  ººººº ººººº ººººº ºººººººººº ººººº ººººº ºººººººººº ººººº ººººº ººººº
ººººº ººººº ººººº ºººººººººº ººººº ººººº ºººººººººº ººººº ººººº ºººººººººº ººººº ººººº ººººº
cool. now that i can do that, I NEED TO GET MY CPU UNDER 50ºC!

 

[Migroo]

Hehe

Youre welcome Duffman.

Let us know how the new 8045 helps with the temps xander5000!

 

[Nack]

I lapped my Alpha with fine-grain automotive sandpaper. When I got it, I could see myself in it, but it had machining ridges in the bottom I could actually FEEL. I figured this would cut the contact area between the sink and the core down, so I sanded it down until the grooves were 98% gone (a couple were really deep, so I just sanded until they looked like scratches, and then filled them in with ASII, as I didn't want to sand off too much copper). I can ALMOST see myself in it now, but not quite like I could when it was new, but the ridges are just about gone!

Nack