Mach II @ -56 CPU @ +10

ExstaZ

New member
Hi everyone. A while ago I bought a Mach II (best bye ever) and had an Opteron 146 that I overklocked like hell. But now I got an Opteron 170 and an DFi SLi-DR motherboard so I can upp the voltages a bit. When I run the CPU @ 290x10 and 1,6225Vcore the evap temp on my Mach is -54-56 depending on the room temperature and the CPU temp is +10 @ full load on both cores, idle is like -20. Is that normal temps or is my motherborad showing of the wrong load temps? The IHS has been removed before but I did put it back when I conected the Mach. Do I get a beather load temp if i remove it?
 
You'll get better temps all round with the IHS removed mate. You need to mod your mounting kit to be able to use it properly with a topless CPU, but Mav has done this and could probably give you some advice on the matter.

Boardy
 
Yep sounds like you are one of the unlucky ones who got a great CPU with crappy contact on the IHS.

In this instance many people (including myself with and x2 4800) had their IHS removed aqnd temps drop to a more appropriate level. But the issue you have is that a standard mach head does not dontact the core very well so you have to make yourself a cooper shim (square same size as mach head and cut from 2mm copper sheet). Doing this should see your temps drop around 8 degrees under load

Having said that, it's not to everyones liking (removing the IHS) and +10 for both cores fully loaded seems about right for a standard MACH2 (mine is r507 regassed GT), try slapping the fans on turbo see if that brings it down a bit, after all, for normal applications it's unlikely that both core will reach 100% load.

There are a number of mods you can make to the MACH to make it better at holding load temps (desuper heater and chilly 1 head conversions), but this will also include a re-gas and a significant cost is involved.
 
Well then I know the temps are showing upp right. I have tried to use both fans on turbo but no extra effect. The Usual load temps when I´m playing and stuff is like +2 +4 degrese celsius. Now I just need to find a chim so I can use it witout a IHS. Do I only get like 4 degres beather load temp I will be wery happy also.

About regass, that is somthing im seriously thinking of but desuper heater and chilly 1 head conversions arn´t somthing I can do. Have no knowledge of this, so I have to go to a cooler technichan to get it regased to r402a or r507. The cost for that would be like 70 bucks in US here in sweden, if you do it "under the table" even cheeper. But what I have heard you have to make a mood on the Mach if you are going to use the r507 gas. There is somthing you need to change (don´t know the english word for it so I won´t post it). Is that true?
 
So just so it's clear to me, as I have an FX60 with cold bug.

I 'could' just crimp the cap tube so it is shorter and I would get warmer temps but a better load capacity?

That being the case - could I run instead of -20 (idle) it could be -10 but it would handle the 200w load better?
 
I would say no. Crimping it could cause the cap tube to block up and then you have another world of problems.

I'd get a cap tube replacement if you want higher temps mate. I'm guessing this is on the new R134a unit you just got?

Boardy
 
And Mav no you can't crimp cap tube I dont know who told you you could do that ?? But as Boardy said it will cause no end of trouble your best option is either water chiller or R134a regas and detune either that or you could get into very technical very expensive ways of adjusting your temperatures via valves etc
 
Just one question about the evap measurement´s. I´m going ti fix a coppar plate for the evap head but do enyone know the measurement´s of the evap head? I don´t want to disconect it before I get the plate. Is it ok if i make like 3mm thik?
 
Stock evap head is 30mm square.

The CPU IHS is 3mm thick I think, so a 3mm copper one would be perfect.

:D

Kenny
 
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