View Full Version : Cooling down your system: heatsinks
Which are the chips that should earn a heatsink in my system?|
I got a bunch of small videocard-type heatsinks that I wanna put in the system.
I will be installing a scandoubler and I guess the temperature will go up and I can be benefited by this (added to the small footprint fan I am installing too).
What am I looking for then? Which chips are the ones that go hotter?
I have a CF-IDE system so no heat from the hard drive :)
rkauer
20 June 2008, 01:25
Which are the chips that should earn a heatsink in my system?|
I got a bunch of small videocard-type heatsinks that I wanna put in the system.
I will be installing a scandoubler and I guess the temperature will go up and I can be benefited by this (added to the small footprint fan I am installing too).
What am I looking for then? Which chips are the ones that go hotter?
I have a CF-IDE system so no heat from the hard drive :)
The hottest chips in an A1200 are Lisa (hands down), Alice and the 020 CPU (even with an accelerator hooked!!!). The CIA (both) goes hot, too. Budgie warms a bit.
Whatt are their IC names in the motherboard?
Lisa will get a Scanmagic on top. Can I still put the heatsink on it? maybe in the scando?
(this topic, by the way, was a trap for you ;) I knew you would reply ;D)
rkauer
20 June 2008, 01:34
Whatt are their IC names in the motherboard?
Lisa will get a Scanmagic on top. Can I still put the heatsink on it? maybe in the scando?
With an internal scandoubler you can't fit a heatsink...
The chips:
Alice 8374
Lisa CGS4203
CIA 8520
CPU MC68EC020
(this topic, by the way, was a trap for you ;) I knew you would reply ;D)
Eheh, I notice that. But I am so naive...:rolleyes
He's a Tricky one that Akira!
OK I put my first one, heatsinked the 68EC020
I had to twist one part of the heatsink so it doesn't conflict with the keyboard, but no biggie :P
Today I saw at conrad some lower profile heatsinks that would be perfect for tight spots like the 68EC020's location, so you better keep looking around until you find what you need.
Here's a bunch of pic:s:
http://img381.imageshack.us/img381/9049/dsc00288mp5.jpg
http://img381.imageshack.us/img381/9044/dsc00289yu0.jpg
http://img92.imageshack.us/img92/7426/dsc00290vo3.jpg
Yeah the twisting is a bit sloppy, don't laugh!
There are NO TOOLS in this house (my friend's) And I had to twist that WITH A FORK>
MacGyver was my teacher :P
By the way, what's that U0 empty slot to the left of the 68EC020 for?
An FPU perhaps?
TheCorfiot
24 June 2008, 20:38
By the way, what's that U0 empty slot to the left of the 68EC020 for?
An FPU perhaps?
Hey Mate Nice piccys,,, The Heatsink is similar to the one on my 68040 & the fins have been bent in a similar fashion, not with a fork though :laughing
It's cool It fits & works,,,, Nice colour too.
The FPU would indeed have been fitted at the factory in the location next to the 020, I've never seen one populated though
Best Wishes
TC :D
rkauer
25 June 2008, 00:29
Hey Mate Nice piccys,,, The Heatsink is similar to the one on my 68040 & the fins have been bent in a similar fashion, not with a fork though :laughing
It's cool It fits & works,,,, Nice colour too.
The FPU would indeed have been fitted at the factory in the location next to the 020, I've never seen one populated though
Best Wishes
TC :D
Neither the PCMCIA led on the case (they exists on C= schematics), on-board RTC, nor 8Mb chip in A4000, ...:(
BTW: believe it or not, the ROM chips goes hot, too!:shocked
Boot_WB
25 June 2008, 00:51
There are NO TOOLS in this house (my friend's) And I had to twist that WITH A FORK
LMAO :laughing
To: Akira
Why damage a fork when you could use your teeth!:)
My teeth got damaged.
No forks were damaged in this modification.
I followed all MacGyver safety rules.
cv643d
25 June 2008, 17:35
I have seen an A1200 with soldered FPU, it did work!
Conrad has a lot of nice heatsinks, I should really order some because Im planning to go heat sink bezerk on my main Amigas! :)
alphonsus
25 June 2008, 17:55
My BlizzPPC doesn't have a heatsink on the 040 - 25MHz.
Do people think I should put one on?
To:cv643d
Hummm , that would be a nice feature...was a factory add on?
Would it be possible to add an PLCC type FPU to A1200 mobo?
rkauer
25 June 2008, 23:44
To:cv643d
Hummm , that would be a nice feature...was a factory add on?
Would it be possible to add an PLCC type FPU to A1200 mobo?
Yes, it is feasible. But the FPU will run at the same slow clock of the EC020, adding not too much horsepower to the system.
You also need the schematics of the A1200 (want it?) to put the lacking few capacitors and resistors required.
Yes please rkauer, just for curiosity sake!
BTW: But if i was using an accelerator card like my blizzard IV 30@50Mhz the fpu feature would be overruned by the accelerator card right...i mean when a accel card is plugged the mobo 68020 and a possible FPU would be ...offline so to speak...Right?
Ofcourse it would be easy and much better to have an fpu in the accelerator card, but i´m just exploring the original mobo possibilities...like adding more chipmem from 2 mb to 8 mb for example.
rkauer
26 June 2008, 00:20
The on-board FPU will be passed, as the CPU.
8Mb fast directly on mobo? Where?:confused
Do you mean 8Mb chip? Sorry m8, no way.:(
BTW: A1200 schematics on the zone in half an hour!
[edit] That was fast than I expect! Now zoned! :D
I thought there was need for extra logic on the board as well to run the FPU???
it would be cool to see though.... :D
rkauer
26 June 2008, 03:58
I thought there was need for extra logic on the board as well to run the FPU???
it would be cool to see though.... :D
Nope, no extra logic required.
The FPU sits in parallel to the CPU, remember?;)
So any FPU (81 or 82) can be put together with a 020 or 030. Full or EC, doesn't matter.
I suppose this would not work if you have an accelerator card, right?
@Akira
using a ram upgrade i am sure it would still work...
but an accelerator.... maybe not... or if it did, it could slow the system down...
for instance the FPU is governed by the on-board motherboard clock.... if you were running an 030@50mhz.... anytime it encountered FPU arithmetic it would be shunted to the FPU and only run at the mobo speed....
all this is theoretical though, as i have not seen this in the flesh before.... infact... untill now I thought you had to have some discrete logic on the board before you could use the FPU socket....
its groovey to know eh?
To:rkauer
Thanks again friend for the schems.:great
I was not really thinking about adding more memory chips, i was thinking about replacing the ones in the mobo for some 1 ,2 or 4 mb each, it depends on the voltage, maybe the original power source from the dram would have to be increased...i dunno...
@Yotoxi.
There isn't enough chip addressing lines to access more than 2MB of chip ram i am afraid to say.
for extended ram, you have to use the Zorro Bus, :)
alphonsus
27 June 2008, 01:58
@Akira
using a ram upgrade i am sure it would still work...
but an accelerator.... maybe not... or if it did, it could slow the system down...
for instance the FPU is governed by the on-board motherboard clock.... if you were running an 030@50mhz.... anytime it encountered FPU arithmetic it would be shunted to the FPU and only run at the mobo speed....
all this is theoretical though, as i have not seen this in the flesh before.... infact... untill now I thought you had to have some discrete logic on the board before you could use the FPU socket....
its groovey to know eh?
The 68k design from 020 onwards allows for 8 processing units on one platform. These can be any combination of main CPUs and FPUs, but a maximum of one MMU (if I've read the wikipedia correctly).
So having an accelerated CPU on card and a motherboard FPU should in principle work but the control logic on each platform will dictate whether it will function or not.
rkauer
27 June 2008, 03:37
The 68k design from 020 onwards allows for 8 processing units on one platform. These can be any combination of main CPUs and FPUs, but a maximum of one MMU (if I've read the wikipedia correctly).
So having an accelerated CPU on card and a motherboard FPU should in principle work but the control logic on each platform will dictate whether it will function or not.
Hello Alphie.
It depends on how C= routed the CS pin on the Amiga board. If permanent to Vcc, then you can't attach an accelerator to the Amiga who have its own FPU.
BTW: reading the Motorola datasheet, I discovered the 68882 can be used as a coprocessor to the 68000 (and 010) too! Yay!
BTW2: Zetr0 passed me his flu!:shocked With no direct contact!
His powers are growing!!!:shocked
gklinger
25 July 2008, 00:43
I was planning on putting a heat sink on my 68060 but I think I better get to work and add them to a bunch of chips just in case.
I may need to find me a sturdy fork. :)
Charlie
25 July 2008, 01:41
My BlizzPPC doesn't have a heatsink on the 040 - 25MHz.
Do people think I should put one on?
There's a fairly practicable way of judging what chips could do with a heatsink:
-Undo the screws.
-Load the 'pute with some software that will make it work hard for a bit.
-Lift the lid & touch her up a bit - - the chip packages, stay away from legs & conductive tracks. Also make sure you earthed yourself FIRST.
-Cool / warm? No worries.
-Hot / Damn hot? Needs a heatsink.
Tips:
-Heatsinks that attach with a sticky pad aren't great - better than nothing.
-Try to use a good thermal goop instead - for Amiga-stuff probably one of the adhesive types.
-Superglue is not a good heat conducter - better than nothing, and what if you want to get that heatsink off again?
-For best performance you can use a high quality goo like Arctic Silver & a couple of tiny dots of superglue @ the corners for mounting. (over the edges, not between HS & chip) - Over-kill?
-Give some thought to airflow when orienting the fins on your heatsink(s) - a small fan sucking air through the case can be a great help - even for chips with no heatsink.
alphonsus
25 July 2008, 12:33
@Charlie
Cheers!
Paul_s
25 July 2008, 12:39
No need inside a 1200 imo... those chips probably run way within their temp tolerances.. plus there's no intake/exhaust fan and it'll just end up being one noisy sod if you went that route :D
68040 upwards/PPC stuff would be the only things I'd bother heatsinking...
No need inside a 1200 imo... those chips probably run way within their temp tolerances.. plus there's no intake/exhaust fan and it'll just end up being one noisy sod if you went that route :D
68040 upwards/PPC stuff would be the only things I'd bother heatsinking...
I put inside a slim fan which barely makes any noise.
vBulletin® v3.7.0, Copyright ©2000-2013, Jelsoft Enterprises Ltd.